ML20141F435

Summary of Meeting W/Util Re Amend to Change UFSAR to Take Credit for Containment Overpressure in Net Positive Suction Head Analyses for ECCS Pumps

ML20141F435
Person / Time
Site:	Pilgrim
Issue date:	06/30/1997
From:	Wang A NRC (Affiliation Not Assigned)
To:	NRC (Affiliation Not Assigned)
Shared Package
ML20141F439	List: ML20141F435 ML20148T510
References
TAC-M97789, NUDOCS 9707020369
Download: ML20141F435 (4)

Text

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UNITED STATES n

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NUCLEAR REGULATORY COMMISSION

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2 WASHINGTON, D.C. 30886 4 001

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June 30, 1997 1

LICENSEE: Boston Edison Company

' FACILITY:

Pilgrim Nuclear Power Plant

SUBJECT:

MEETING SUPMARY - MEETING BETWEEN BOSTON F. DIS 0N COMPANY i

AND THE NRC ON NET POSITIVE SUCTION HEAD OF THE ECCS'

]

PUMPS (TAC NO. M97789)

At the request of the Nuclear Regulatory Commission (NRC), the Boston Edison l

Company, (BEco or licensee), met with the staff to discuss their amendment to change the updated Final Safety Analysis Report (UFSAR) to take credit for containment overpressure in their net positive suction head (NPSH) analyses j

for the emergency core cooling system pumps.

The NRC staff had several questions regarding various submittals provided related to the NPSH analyses.

In particular, the staff informed BEco that the use of the Arrhenius Methodology for extrapolating operating times is a valid approach. The staff asked the licensee to document their conclusion that a factor of 2 margin'was provided in the use of the Arrhenius Methodolegy.

i However, the staff noted that certain penetrations that were not qualified i

under 10 CFR Section 50.49 and this may not be acceptable.

BEco will check to i

see if the non-qualified penetrations can be considered passive, i.e. no lines l

will be energized in the penetration during the accident.

1 l

The staff had several questions concerning the initial assumptions used in the containment pressure analyses.

The staff stated that these concerns could be i

addressed by BEco performing an analyses of the average containment temperature using the Technical Specification (TS) maximum' values to determine the initial containment mass. The staff requested BEco to modify the delta pressure versus NPSH available curve to provide some margin.

BECo agreed to make this change. The staff also requested BECo to document that the TSs require a.5 pounds per square inch differential between the ret well and the drywell. The licensee stated that they will provide this information as soon as possible.

b acmcamacang 02000B 9707020069 970630 PDR ADOCK 05000293 P

PDR

s The licensee provided a revision to BECo Calculation No. M-662 (Enclosure 1),

which assumes the use of the new stacked strainers and removes the debris head loss analysis.

In addition, the licensee provided information for some of the User defined inputs for the ANS 5.1-1979, " Decay Heat-Reanalysis Using 2 Sigma Uncertainty" (Enclosure 2).

The staff stated that these inputs appear reasonable but final approval cannot be done until the analyses is submitted by BECo. is a list of attendees.

Original signed by Alan B. Wang, Project Manager Project Directorate I-3 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Enclosures:

1.

BECo Calculation M-662 2.

Response to staff questions regarding user defined inputs 3.

List of Attendees cc w/encis: See next page DISTRIBUTION Hard Copy (All enclosures)

E-Mail (w/ enclosure 3)

Docket File S. Collins /F. Miraglia (SJCl) (FJM)

PUBLIC R. Zimmerman (RPZ)

PDI-3 RF S. Varga (SAV)

OGC P. Milano (PDM)

ACRS A. Wang (ABW)

D. Ross (SLM3)

W. Dean (WMD)

C. Hehl (CWH)

K. Kavanaugh (KAK)

J. Lyons (JEL)

J. Dawson (HFD)

J. Kudrick J. Knox (JLK)

W. LeFave (WTL1)

D. Screnci (DPS)

DOCUMENT NAME: G:\\ PILGRIM \\NPSH. SUM Ta reseeve e sepy of this deeumont, ladeste in the bes:

'C' = Copy without ottachment/ enclosure "E' = Copy with ettachment/ enclosure

'N' = No copy 0FFICE PDI-3/PM l

PDI-I/LA (A)D:PDh3; 3 NAME AWang

• Slittle*

PMilanof" ' W DATE 06/ % /97 06/??/97 06/3 n /97

Pilgrim Nuclear Power Station cc:

i Mr. Leon J. Olivier Mr. Jeffery Keene Vice President of Nuclear Licensing Division Manager Operations & Station Director Boston Edison Company Pilgrim Nuclear Power Station 600 Rocky Hill Road IFD #1 Rocky Hill Road Plymouth, MA 02360-5599 Plymouth, MA 02360 t

Ms. Nancy Desmond Resident Inspector Manager, Reg. Affairs Dept.

U. S. Nuclear Regulatory Commission Pilgrim Nuclear Power Station 1

Pilgrim Nuclear Power Station RFD #1 Rocky Hill Road Post Office Box 867 Plymouth, MA 02360 Plymouth, MA 02360 Mr. David F. Tarantino i

Chairman, Board of Selectmen Nuclear Information Manager i

11 Lincoln Street Pilgrim Nuclear Power Station i

Plymouth, MA 02360 RFD #1, Rocky Hill Road 1

Plymouth, MA 02360 Chairman, Duxbury Board of Selectmen l

Town Hall Ms. Kathleen M. O'Toole 878 Tremont Street Secretary of Public Safety Duxbury, MA 02332 Executive Office of Public Safety One Ashburton Place Office of the Commissioner Boston, MA 02108 Massachusetts Department of Environmental Protection Mr. Peter LaPorte, Director One Winter Street Attn: James Muckerheide Boston, MA 02108 Massachusetts Emergency Manage:r.ent Agency Office of the Attorney General 400 Worcester Road One Ashburton Place P.O. Box 1496 1

20th Floor Framingham, MA 01701-0317 Boston, MA 02108 Chairman, Citizens Urging Mr. Robert M. Hallisey, Director Responsible Energy Radiation Control Program P.O. Box 2621 Massachusetts Department of Duxbury, MA 02331 Public Health 305 South Street Citizens at Risk Boston, MA 02130 P.O. Box 3803 Plymouth, MA 02361 Regional Administrator, Region I U. S. Nuclear Regulatory Commission W.S. Stowe, Esquire 475 Allendale Road Boston Edison Company King of Prussia, PA 19406 800 Boylston St., 36th Floor Boston, MA 02199 Ms. Jane-Fleming 8 Oceanwood Drive Duxbury, MA 0233

4' 4

cc:

(cont.)

Chairman Nuclear Matters Committee

- Town Hall i

1.i Lincoln Street Plymouth, MA 02360 Mr. William D. Meinert Nuclear Engineer Massachusetts Municipal Wholesale Electric Company P.O. Box 426 Ludlow, MA 01056-0426 Mr. E. Thomas Boulette, Ph. D Senior Vice President - Nuclear Boston Edison Company Pilgrim Nuclear Power Station RFD #1 Rocky Hill Road Plymouth, MA 02360 4

e f

a d

4

, CALCULATION COVER SHEET PILGRIM NUCLEAR POWER STATION I

SHEET 1 OF $2 CALC. NO. M-662 REv. E2 FILE NO.

SR RTYPE NSR R B4.01

Subject:

RHR and Core Spray Pump NPSH and Suction Preliminary Calc. O Pressure Drop Finalization Discipline Division Manager: T.F. White / J.L. Rogers Due Date:

Date:

Final Calc.

A ) W' h.

%/f1 Approval /s/-

r M

/

G Independent Reviewer G.E. O'Connor

/s/

Statement Attached Q l

Page(s)

By:

P.D. Harizi Date Ch'k'd P.J. Doody Date Agreed W

ff1 l

No e Page(s)

By: P.J. Doody Date

/Ch'k'd P.D. Haiizi '

Date Agreed WI0* I Mk Y/IOfR'I No e

/

Note:

Section preparers are as indicated on individual calculation pages.

Revision E1 provided NPSH analyses for 75'F heat sink temperature.

Revision E2 is based on new stacked-disc strainers and removes the debris head loss analysis.

This design analysis O DOES, @ DOES NOT require revision to affected design documents.

Affected Design Documents:

j 1

A PDC D IS, @ IS NOT Required.

A Safety Evaluation @ IS, O IS NOT Required. Refer to SE-2971 and SE-2983.

This design analysis O DOES, @ DOES NOT affect the piping analysis index (pal). If the pal is affected, initiate a revision to Calculation M561.

Minor revisions made on pages of this calculation. See next revision, j

1 Replaces Calc. No.

Voided By Calc. No.

O Or Attached Memo

CALCULAh0N SHEET PREPARED BY:

P.D. Harizi CALC.#

_ M-662,

-@ !aostors Edison CHECKED BY:

P.J. D !dy REV.

E2

,DATE 04-APR-97 SHEET 2

OF SZ 1

i I

Table of Contents i

Section Number Description i

1.0 Statement of Problem l

2.0 Sunanary of Results and. Recommendations f

3.0 Calculation ofTotal Suction Losses and NPSH Available 3.A Method of Solution 3.B Input Data and Assumptions l

3.C Calculations / Analyses 3.C.1 Suction Line Head Loss Calculation i

3.C.2 Net Poshive Suction Head Calculation 3.C.3 Sump Hydraulic Performance 3.C,4 Maximum Allowable Pump Suction dP @ IST Conditions 3.C.5 Initial Containment Pressure 4.0 Updated FSAR NPSH Analyses and Figures

4. A ' Method of Solution 4.B Input Data and Assumptions 4.C Caiculations / Analyses 4.C.1 Definition of Terms 4.C.2 Equations 3

4.C.3 Benchmark Case 4.C.4 Updated FSAR NPSH Analysis and Figures 5.0 References 6.0 Attachments a

CALCULATitN SHEET PREPARED BY:

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Table Number Table Description

~1 Section 3 Input Values 2

Pump Suction Line Configuration p

j-3 Pipe Line Losses l

4 Total Suction Loss 5

NPSH & Maximum Suction dP i

6 NPSH & Maximum Suction dP 7

NPSH & Maximum Suction dP l

8 Section 4 Input Values l

9 Benchmark Case Containment Pressure Available and Required l

10 Benchmark Case NPSH Available and Required 11 Updated Analysis -Containment Pressure Available @ 1%/ Day Leakage Rate 65 F Seawater Temperature l

12 Updated Analysis -Containment Pressure Available @ 5%/ Day Leakage Rate 65 F Seawater Temperature 13 Updated Analysis -Containment Pressure for RHR Pump NPSHR @ 1%/ Day Leakage. Rate - 65*F Seawater Temperature 14 Updated Analysis -Containment Pressure for Core Spray Pump NPSHR @ 1%/ Day i

Leakage Rate - 65 F Seawater Temperature 15 Updated Analysis -Containment Pressure for RHR Pump NPSHR @ 5%/ Day Leakage Rate - 65 F Seawater Temperature 16 Updated Analysis -Containment Pressure for Core Spray Pump NPSHR @ 5%/ Day Leakage Rate - 65 F Seawater Temperature 17 Updated Analysis -Containment Pressure Available @ 1%/ Day Leakage Rate l

75 F Seawater Temperature 18 Updated Analysis -Contenment Pressure Available @ 5%/ Day Leakage Rate 75 F Seawater Temperature 19 Updated Analysis -Contamment Pressure for RHR Pump NPSHR @ 1%/ Day Leakage Rate - 75 F Seawater Temperature l

20 Updated Analysis -Containment Pressure for Core Spray Pump NPSHR @ 1%/ Day Leakage Rate - 75 F Seawater Temperature 21 Updated Analysis -Containment Pressure for RHR Pump NPSHR @ 5%/ Day Leakage Rate - 75 F Seawater Temperature i

CALCULATION SHEET PREPARED BY; P.D. Harizi

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M-862 REV.

E2 DATE 04-APR-97 SHEET 4

OF 82-22 Updated Analysis -Containment Pressure for Core Spray Pump NPSHR @ 5%/ Day Leakage Rate - 75 F Seawater Temperature 23 Updated Analysis -ECCS Pump NPSHA Over a Range of Pool Temperatures and Zero Containment Leakage Figure Number Figure Description 1

Evaluation of Sump Hydraulic Performance 2

Amendment 9 Benchmark Case - FSAR Figure 14.5-10

)

3 Amendment 9 Benchmark Case - FSAR Figure 14.5-9 4

New FSAR Figure 14.5-10 NPSH Availability for RHR and Core Spray System After a DBA-LOCA 65 F Seawater Temperature 5

New FSAR Figure 14.5-13 NPSH Margin for RHR and Core Spray System After a DBA-LOCA 65 F Seawater Temperature 6

New FSAR Figure 14.5-XX NPSH Availability for RHR and Core Spray System After a DBA-LOCA 75 F Seawater Temperature 7

New FSAR Figure 14.5-XX NPSH Margin for RHR and Core Spray System After a DBA-LOCA 75 F Seawater Temperature 8

New FSAR Figure 14.5-9 NPSH Availability for RHR and Core Spray System u

i

$ Boston Edison CALCULATION SHEET MENED E M ham CALC.#

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l l

1.0 Statement of Problem i

This calculation provides an analysis ofNPSH conditions for the RHR and Core Spray Pumps during performance test conditions and determines the margin for NPSH available following the design basis loss ofcoolant accident (DBA LOCA). Proper and reliable performance of Emergency Core Cooling System (ECCS) pumps requires adequate net positive suction head (NPSH) which is defined as the absolute pressure at the pump impeller datum less the vapor pressure of the fluid being pumped. If the available NPSH is less than the NPSH required by the pump, cavitation will occur within the pump.

Cavitation reduces the pump perfomtance and may cause mechanical damage.

It is necessary to calculate the head losses in the suction lines for the RHR and Core Spray Pumps under normal testing and accident conditions. The suction head losses will be used to evaluate pump NPSH at the normal testing and DBA LOCA conditions to determine the minimum margin that will be available to accommodate potential degradation of the suction strainers from LOCA-generated debris. A fixed amount of margin is subtracted from the total available and is used as the basis for the maximum allowable strainer head loss at normal conditions to be applied during pump In-Service Testing (IST).

It is necessary to perform a time dependent analysis of NPSH conditions following the DBA LOCA using the predicted suppression pool temperature profiles and postulated values for containment leakage to determine the minimum NPSH margin that will be available. The suppression pool profiles are based on the design basis recrculation line break DBA LOCA with 65 F and 75 F ultimate heat sinks. Results from the analysis are presented in new FSAR figures showing the minimum NPSH margin for the low pressure ECCS pumps following a DBA LOCA.

2.0 Summary of Results and Recommendations Table 4 provides the suction pressure drop that is calculated for each RHR and Core Spray Pump operating at the normalIST performance test conditions and at accident conditions. The test condition value represents the pressure drop at the pump suction between the idle pump no-flow condition and with the normal pump test flow rate.

Tables 5 and 6 provide calculations of the available NPSH and margin for suppression pool temperatures of 166 F and 178 F. These are the peak suppression pool temperature for the 65 F and 75 F heat sink design cases [Refs.10 & 37]. The RHR and Core Spray l

Pumps are provided adequate NDSH under design conditions at the peak pool temperature with the initial wetwell pressure of 0.5 psig. With the suction conditions degraded due to l

LOCA-generated debris, a positive NPSH margin must be maintained at the peak pool temperature based on the corresponding wetwell pressure shown on Figures 4 and 6 i

(described below). Evaluation of the ECCS pump NPSH conditions with LOCA-

l

$ Boston Edison CALCULATION SHEET PREPARED BY:

P.D. Harizi CALC. #

M-662 CHECKED BY:

P.J. Doody REV.

E2 DATE 04-APR-97 SHEET fo OF BE generated debris is included in Calculation M-734 [Ref. 40]. Conditions associated with the DBA LOCA are used because this event produces the highest peak in suppression pool temperature.

Table 7 provides a calculation of the available NPSH and margin for the point of minimum NPSH margin following a DBA LOCA based on the results shown in Figures 5 and 7 (described below). The 112 F data corresponds to the 1% per day leakage case and the 119 F data corresponds to the 5% per day leakage case at the point of minimum margin when the containment pressure has decreased to atmospheric pressure for the 65 F heat sink design case. The 115'F data corresponds to the 1% per day leakage case and the 126 F data corresponds to the 5% per day leakage case at the point of minimum margin when the containment pressure has decreased to atmospheric pressure for the 75 F heat 4

sink design case.

Figures 4 and 6 provide graphical presentations of the calculated values for " primary containment pressure" and the " containment pressure necessary to meet NPSH required" for both the RHR and Core Spray pumps aRer a DBA LOCA with 65 F and 75 F heat sinks. Containment pressure is evaluated for a containment leakage rate equal to the Technical Specification (TS) limit (1%/ day) and 5 times the TS limit (5%/ day).

Figures 5 and 7 provide graphical presentations ofNPSH margin as a function of time aner a DBA LOCA with 65 F and 75 F heat sinks. The margin curves shown on this figure are the difference between the primary containment pressure and the containment pressure required to meet the NPSHg for the pump. The Core Spray pumps are predicted to have smaller NPSH margin throughout the accident response. For the 65 F heat sink case, the point ofleast margin for the Core Spray pump occurs during the suppression pool cooldown, approximately 52 hours6.018519e-4 days <br />0.0144 hours <br />8.597884e-5 weeks <br />1.9786e-5 months <br /> aRer the accident at which time Core Spray pump margin is approximately 11.5 feet. The minimum RHR pump margin occurs at approximately the same time and is approximately 17.3 feet. For the 75 F heat sink case, the point ofleast margin for the Core Spray pump occurs during the suppression pool cooldown, approximately 90 hours0.00104 days <br />0.025 hours <br />1.488095e-4 weeks <br />3.4245e-5 months <br /> aner the accident at which time Core Spray pump margin is approximately 10.8 feet. The minimum RHR pump margin occurs at approximately the same time and is approximately 16.6 feet.

Based on the information presented, substantial NPSH margin will be available to assure reliable operation of the RHR and Core Spray pumps. Available NPSH vUl exceed required NPSH over the entire range of suppression pool temperatures that are predicted following the DBA LOCA. To complete an analysis for the adequacy of NPSH available to the RHR and Core Spray pumps, a debris head loss analysis must be performed for comparison to the margin for NPSH availatie presented in this calculation. The debris analysis and comparison to the NPSH margin is included in Calculation M-734 [Ref. 40].

=-

(

i CALCULATION SHEET g Boston Edison PREPARED BY:

P.D. Horizi y

CALC.#

M-662 CHECKED BY:

P.J. Doody REV.

E2 DATE 04-APR 97 SHEET 3

OF 92.

3.0 Calculation of Total Suction Losses and NPSH Available 3.A Method of Solution l

l This calculation determines the suction line losses for the RHR and Core Spray Pump.

These losses are used to predict the suction pressure drop that will occur with a clean strainer. The suction line head loss is calculated at the conditions for temperature and l

pump flow rate for the pump performance In-Service Test (IST). The calculation for l

suction head loss is repeated at the predicted accident conditions for wetwell temperature, pressure, and pump flow rate. This calculation also predicts the NPSH available at the ECCS pump suctions under accident conditions and the resulting margin between NPSH Available and NPSH Required.

A number of variables determine the margin for NPSH available to the pumps. Principally they are:

Suppression pool water level, temperature, and density.

Wetwell pressure.

Vapor Pressure of the suppression pool water.

Pump suction line head loss which is principally a function of geometry and flowrate (which includes the clean suction strainer head loss).

The suction pressure drop as would be read on a pressure gage mounted at the pump suction is also calculated. The pressure drop is the difference in the pressure read with the pump idle (0 gpm) and with the pump at the test flow rate. This measurement method cancels out the effect of gage height versus the datum such that only the delta-P is important.

There is a maximum amount of strainer fouling that can be tolerated such that there will be adequate NPSH to the ECCS pumps under containment accident conditions. This calculation determines the minimum margin for NPSH available to the ECCS pumps following the bounding DBA LOCA. A fixed amount of the total available margin is used to calculate the maximum pressure drop that may be allowed during routine pump performance testing. The allowable pressure drop for the test conditions is based on the calculated suction line losses at the accident conditions for wetwell temperature, pressure, and pump flow rate.

The pressure drop at the test conditions (PGAGESTA'MC - PGAGsRuNstNG ) provides a measure of the dynamic pressure drop caused by resistances and restrictions in the suction line plus j

the conversion of static head to velocity head as follows:

i l

dP = PGAGESTAT1c - PGAGERUNNNO = Suction Line Pressure Drop + Velocity Head 1

4 h

gygg g g,

CALCULATION SHEET PREPARED BY:

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REV.

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SHEET 8*

OF 82.

The allowable suction dP is a fixed amount of NPSH margin allocated for surveillance testing purposes and must be of sufficient magnitude so that it is within a reasonable measurement range considering testing accuracy and repeatability.

3.B Inout Data and Assumptions The physical configurations of the suction lines to the RHR and Core Spray Pumps are taken from the drawings listed in the Reference section.

The head losses due to pipe fittings are in accordance with [Ref. 7].

Pipe friction values are based on the Moody diagram [Ref. 7]. The pipe roughness value was selected for steel pipe with light rust per [Ref. 8].

The strainer characteristics are in accordance with [Ref.14].

The design basis accident conditions inside containment are in accordance with (Ref.10,37].

The 5100 gpm RHR Pump flow rate is based on the flow limitations for the RHR heat exchanger. This single pump value of flow bounds the per-pump flow for the two-pump case used in accident analyses [Ref.11,12]. The 4400 gpm Core Spray Pump flow rate is the minimum pump runout flow rate assumed in the accident analysis (4100 gpm) plus an assumed minimum flow line flow rate of 300 gpm [Ref. I1,12].

The following assumptions apply:

1. The RHR and Core Spray Pump accident flow rates of 5100 gpm and 4400 gpm, respectively, correspohd to the flow at zero reactor pressure.

2. The RHR and Core Spray Pump performance test flow rates of 4800 gpm and 3300 gpm, respectively, correspond to the IST test conditions with 80F torus water.

m-

h orn Edie CALCULATIEN SHEET PREPARED BY:

P.D. Harizi CALC.#

M-462 CHECKED BY:

P.J. Doody REV.

E2 DATE 04-APR 97 SHEET 9

OF BZ 3.C Calculations / Analyses 3.C.1 Suction Line Head Loss Calculation Definition of Terms K

resistance coeffcientfor velocity head loss calculation

=

Q rate ofpow (gpm)

=

V mean velocity ofpow (ft/sec)

=

hr velocity head (ft) h re head loss due tofluidflow through valves andpitings (ft)

=

t headloss due toflow through a clean suction strainer (ft) h sim.vsa

=

t h nn-head loss due topow through suctionpipe (ft)

=

t hs:

total head loss due toflow in the suction line with a clean suction strainer (ft)

=

density (ibm /ft')

p

=

g.

acceleration ofgravity equal to 32,2ft/sec'

=

dP

= pressure drop atpump suction (psi) cross sectional area ofpipe or onfice, orpow area in valve (in')

a

=

cross sectional area ofpipe or onfice, orpow area in valve (ft')

A

=

d internaldiameter ofpipe (in)

^

D internaldiameter ofpipe (ft)

=

absolute roughness (in) c

=

e/D relative roughness

=

l

= frictionfactor in Equation 5 readfrom Moody diagram [Ref 7]

L length ofpipe (ft)

=

UD

= equivalent length ofa resistance toflow, inpipe diameters kinematic viscosity (ft'/sec) v

=

i Head Loss Formulas Averarc Flow Velocity j

^

V = (G x 1/7.4805 x 1/60)

Equation 1 A

Velocity Head hy = V '

Equation 2 28

h Boston Edison PREPAREO BY:, P.D. Harizi CALCULATION SHEET CALC.#

M-862 CHECKED BY.

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E2

,DATE 04-APR-97 SHEET

/0 OF 62.

Reynolds Number Re = D x V Equation 3 v

Losses For Valves and Fittines h y&,= Ky2 Equation 4 t

2g Losses For Straight Pipe h npg = f [

y2 Equdon5 t

t D> 2g

\\

f!can Strainer lasses The clean strainer rated pressure drop was taken from Calculation M-667 [Ref. 39] and used to generate a table of values at different flow rates by using a flow-squared relationship.

In addition, the initial pipe spool piece is 16" ID which connects to the 17.25" ID suction lines. A head lo:s K-factor for the sudden enlargement (K = 0.036) was added to obtain the total K-factor for the valves and fittings in each suction line.

Total Line Loss ha = h ur + h nes + h snw.vsa Equation 6 t

t t

Pump Suction Pressure Drop JP = (hst + hy ) x (p/144)

Equation 7 Note: This pressure drop (psi) represents the difference between the gage pressure readings taken at the pump suction with the pump idle (0 gpm) and with the pump at the nomial flow rate. Since the gage is reading from a static pressure tap, the velocity head (h;-) is added to the line loss to give the total change in head.

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t 3.C.2 Net Positive Suction Head Calculation Definition of Terms NPSHa Netpositive suction head available at the centerline of thepump inlet (ft)

NPSHa Net positive suction head required at the centerline of the pump inlet (ft) j NPSHu Vetpositive suction head margin; NPSHa - NPSHa (ft)

=

{

hz nation head ofsuppression pool water measured at the centerline of the pump inlet (ft)

Im Dynamic headloss caused byflow through a clean suction strainer and the

=

suction line (ft)

Troot.

Temperature of the suppression pool water ( F)

Pc Primary containmentpositive pressure (psig)

=

Pm Vaporpressure at the temperature of the pumpedfluid (psia)

=

Specific volume offluid(ft'/lbm)

Vse

=

Eaustions The NPSH available to the RHR and Core Spray pumps is:

(14.696 + P ~ NPh(1 AA)(VSP)

Equation 8 NPSHA *NZ -hSL +

C The margin for NPSH available is:

NPSHu = NPSHA - NPSHR Equation 9 1

i Total Avai!able Margin is the arithmetic difference between the NPSH available and required as defmed above. Available Marginfor LOCA Debris is equal to the Total Available Margin c.dnus the fixed head loss of 2 feet allocated for pump in-service testing.

Constant inDut$

NPSHa RHR Pumps: 23 feet at 5100 gpm [Ref 6]

Core Spray Pumps: 29 feet at 4400 gpm lRef 5]

hz 12.5feetfrom minimum normal suppression water level (-3 '0 ") to the pump inlet

=

centerline at (-15'6")

^

1 e

~

i h Bogy CALCULATION SHEET PREPARED BY:

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E2 DATE 04-APR-97 SHEET

/2 OF B2.

Pc

- The minimum value of 0.3psig corresponds to the initialcontainmentpressure.

The minimum value ofwetwellpressure with debris headloss included is calculatedas the wetwellpressure required to maintain the requiredNPSH at the associatedpeak accident water temperature with :ero NPSH margin.

The wetwellpressure of 5.6psig is the predicted accident wetwellpressure at the point ofpeak pool temperaturefor the 166 'F case in Figure 4.

The wetwellpressure of 7.4psig is the predictedaccident wetwellpressure at the point ofpeakpool temperaturefor the 178'F case in Figure 6.

Pm

- From the ASME Steam Table 1 " Properties ofSaturatedSteam andSaturated Water (Temperature)".

Vsr

- Same as above.

3.C.3 Sump Hydraulic Performance Sump hydraulic performance, with respect to air ingestion potential, can be evaluated on the basis of submergence level and inlet velocity. Submergence level refers to the water depth above the suction strainer outlet and inlet velocity is the water average velocity entering the strainer outlet pipe. These parameters are expressed nondimensionally as the Froude Number:

y Froude Number = h mean velocity of),uw (jt/sec)

V

=

water depth above strainer outletpipe (ft) s

=

acceleration ofgravity equal to 32.2ft/sec' g

=

For BWR's, the air ingestion is zero for Froude Numbers less than 0.8 with a minimum submergence of 6 feet [Ref. 3]. The limiting case for the Pilgrim ECCS suction strainers is the suction line to the RHR pump from the common ECCS strainer since the RHR velocity is greater than for the Core Spray pump, with the evaluation as follows (refer to Figure 1):

minimum torus water level EL -3 '0"

=

strainer core pipe outlet top ofopening EL -12'3"

=

RHR inletpipe mean velocity @ 5100 gpm (ID - 17.25 ")

7.00ft/sec

=

-m

MEP,MED BW P.D. HMzi CALCULATIEN SHEET

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I l

7.00 Froude Number =

= OAl gl(32.2)(12.25 - 3.00) l Froude Number 0.41 < 0.8 and submergence 9.25 ft > 6 ft,

.. Air ingestion potential = ZERO 1

3.C.4 hiaximum Allowable Pump Suetion dP @ IST Conditions The maximum allowable pump suction pressure drop as measured at the IST testing conditions is based on the total suction head losses plus the additional fixed head loss of 2 feet at the accident conditions for wetwell temperature, pressure, and pump flow rate. The total suction head loss (hu) is calculated at both the IST conditions for temperature and pump flow rate and for the accident conditions. The fixed head loss of 2 feet at the accident conditions is used to calculate a maximum dP for the test conditions that will ensure that NPSH will meet or exceed the available A

margin for LOCA debris at the accident conditions using the following relationship:

Equation 10

{ [(ha.mx + h st) x (ha.rsst Iha.mx )} + hv.rss7 } x (przsr i144 )

dPmr

=

i dPwe

- Marimum allowable suction pressure drop at IST conditions (psi) hs7

= Fixed head loss of 2 feet at accident conditions allocated to pump i

In-Service Testing (IST)(ft) ha.mx

= Suction head loss at accident conditions (ft) hst.rsst

= Suction headloss at ISTconditwns (ft) he.rss7 Velocity headatISTconditions (ft)

=

prssi

- Density at IST temperature (Ibm /ft')

CALCULATION SHEET PREPARED BY:

P.D. Hirizi Bosrfon Edison CALC. #

M-862 CHECKED BY:

P.J. Doody REV.

E2 DATE 04-APR-97 SHEET

/4 OF 67-2 3.C.5 Initial Containment Pressure The initial conditions assumed for containment temperature and pressure prior to a Loss of Coolant Accident (see Table 8) are:

Volume Temperature Pressure Relative (ft')

(F)

(psig)

Humidity (4)

Drywell 147,000 150 1.30 80 4

Wetwell Airspace 124,500 80 0.00 100 The drywell and wetwell airspace volumes are assumed to be mixed and in equilibrium following i

an accident that results in a reactor blowdown to the primary containment. The temperature and pressure for this mixed volume is calculated based solely on the temperature and pressure conditions that exist prior to the accident. This is considered to be the " initial condition" in containment (drywell and wetwell) for the NPSH analysis.

Calculate Initial Mass of Noncondensible Gas:

2

-(Pp + 14.696)-(pF;7) (Vo)*144 n i

p, A'/p =

(Drywell)

R(To, + 460) 2/

i (Pir + 14.696)-( P;7) (V;y)*144 n 7 Af;y =

(Wetwell)

R(Try + 460) where:

R = 53.3 ft-lbf/lbm-R Pm = 3.7184 psia @ 150 F 0.5068 psia @ 80 F Drywell

= 8,478 lbm Wetwell Airspace

= 8,838 lbm Total Noncondensible Gas

= 17,316 lbm i

CALCULATION SHEET A

PREPARED BY:

P.D. Horizi g

gg, CALC.#

M-662 CHECKED BY:

P.J. Doody REV.

E2 DATE 04-APR-97 SHEET If OF 62.

Calculate mixture temperature of both air volumes:

Twx = Vo(To)+ Vgy(Tgy)

Vo + Vy 7

7,gy 147,000(150) + 124,500(80)

- 118 oF 271,500 Calculate pressure at mixture temperature:

Pc = (M )R(Twy + 460) + (ppm)- 14.696pSig 7

r 3

V 144 "

T The mixture will have relative humidity of 100% at 118 F:

Pc = (17,316)*53.3* (118+460) + l$6009 - 14.696 = 0.55 psig g

3 2

IM 271,500 144 i ft >

The minimum value for the initial containment pressure to be used in the Section 3 NPSH calculation is 0.50 psig except where noted, e.g., at the point of minimum NPSH margin.

$ Soston Edison CALCULATION SHEET NEPARED BW P.D. Hadzi 1

CALC.#

M-662 CHECKED BY:

P.J. Doody REV.

E2 DATE 04-APR 97 SHEET Ib OF 81 Evaluation of Sump Hydraulic Performance 2 Strainers w/ 2 RHR & 1 Core Spray Suction Nozzle Each Stacked Disk Construction with Horizontal Core Tube 2

Strainer Screen Area = 670 ft Each Screen Openings = 1/8* Diameter 40% Open Area 0.120" Thick l

Rated Head Loss = 0.5254 psi at 10,000 GPM l Torus Minimum Water Levell l EL -3'O' l n

l s = Minimum Submergence = 9'3" l lEL 12'3' l' N

\\

18' Outlet Pipe for Each Pump RHR Flow V = 7.0 ft/sec (Refs' 13' 14' 15' 39]

l Strainer 24" Core Pipe l

@ 5100 GPM per Pump Figure 1

Table 1 - Input Values y

y g

g b

b m

Friction Factor f for 18" Fittings =

0.012

-4 ic b,4 Piping Absolute Roughness e (in) =

0.006 Q

x 5

lK Values (Crane) 45 LR EL 90 LR EL 90 SR EL Tee Branch Tee Run Gate Valve B' fly Valve g

z Effective UD for Fitting 10 14 20 60 20 8

25 g

fr Turbulent Flow Friction Factor 0.0120 0.0120 0.0120 0.0120 0.0120 0.0120 0.0120 S

g K = (UD)

• f r FOR 18" FITTINGS 0.120 0.168 0.240 0.720 0.240 0.096 0.300 O

~4 m

lK Values (Calculated) 56 SR EL 64 SR EL Flex Joint E

EffecNye UD for Fitting 12.4 "4.2 8

k F

fr Torbulent Flow Friction Factor 0.0120 0.0120 0.0120

p K = (UD)

• fr FOR 18" FITTINGS 0.149 0.170 0.096 0

kValues (Crane)

Expand Reducer Effective K for Fittings Pipe Eccentric O

Independent of Friction Factor 16 x 17.25 18 x 12 K = fixed 0.036 0.090 RHR and Core Spray Pumps Flw Loss (psi)

Loss (ft)

Suction Strainer Loss (Clean) 3 3000 0.0473 0.1121 3300 0.0572 0.1356

.n 3600 0.0681 0.1614 Q

g 3750 0.0739 0.1751 m

o 4100 0.0883 0.2093 x

U 4400 0.1017 0.2411 4800 0.1211 0.2869

--y 4600 0.1112 0.2635 g

5000 0.1314 0.3113 i

o 5100 0.1367 0.3239 N

Rated delta 0.5254 psi at 10000 gpm 10000 0.5254 1.2452 g

-E o.

RHR/CS NPSH Calc 04-APR-97 File = RHRSST02.XLS

Table 2 - Pump Suction Line Configuration L Length d Dirmeter D Diamet r c Area A Art,a pipe 2

2 Pipe No.

(ft)

(inches)

(ft)

(in )

(ft )

Pipe Class Schedule CS A-1 79.0 17.25 1.438 233.71 1.62 18"-HUHD Std m

x o

o CS A-2 1.0 11.25 0.938 99.40 0.69 12"-HD Std I

m CS B-1 79.0 17.25 1.438 233.71 1.62 18"-HIJHD Std m

o o

CS B-2 1.0 11.25 0.938 99.40 0.69 12"-HD Std A

RHR A 94.0 17.25 1.438 233.71 1.62 18*-HUHB Std m

g RHRB 56.0 17.25 1.438 233.71 1.62 18"-HUHB Std 00 g

o RHR C 56.0 17.25 1.438 233.71 1.62 18"-HUHB Std g

[

RHR D 94.0 17.25 1.438 233.71 1.62 18"-HUHB Std w

a g

h Valve or C S A-1 CS A-1 CS A-2 CS A-2 CS B-1 CS B-1 CS B-2 CS B-2 o'

Fitting Count K

Count K

Count K

Count K

45 LR EL 4

0.480 0

0.000 4

0.480 0

0.000 o

90 LR EL 1

0.168 0

0.000 1

0.168 0

0.000 gg g

90 SR EL 3

0.720 0

0.000 3

0.720 0

0.000 N

]

W 56 SR EL 1

0.149 0

0.000 1

0.149 0

0.000 to Flex Joint 1

0.096 0

0.000 1

0.096 0

0.000 Tee Branch 0

0.000 0

0.000 0

0.000 0

0.000 Tee Run 1

0.240 0

0.000 1

0.240 0

0.000 Gate Valve 1

0.096 0

0.000 1

0.096 0

0.000 g

Butterfly Valve 1

0.300 0

0.000 1

0.300 0

0.000 Expand 1

0.036 0

0.000 1

0.036 0

0.000 Reducer 0

0.000 1

0.090 0

0.000 1

0.090 i

V & F Total K =

2.285 0.090 2.285 0.090 3

Valve or RHR A RHR A RHR B RHRB RHR C RHR C RHR D RHR D Fittin0 Count K

Count K

Count K

Count K

.n 45 LR EL 3

0.360 3

0.360 3

0.360 3

0.360 g

g 90 LR EL 4

0.672 2

0.336 2

0.336 4

0.672 m

y 90 SR EL 0

0.000 0

0.000 0

0.000 0

0.000 pt o

56 SR EL 0

0.000 1

0.149 1

0.149 0

0.000 64 SR EL 1

0.170 0

0.000 0

0.000 1

0.170 g

--y Flex Joint 1

0.096 1

0.096 1

0.096 1

0.096 Tee Branch 0

0.000 0

0.000 0

0.000 0

0.000 y

y Tee Run 1

0.240 1

0.240 1

0.240 1

0.240 O

Gate Valve 1

0.096 1

0.096 1

0.096 1

0.096 I

Butterfly Valve 1

0.300 1

0.300 1

0.300 1

0.300 g

g.

Expand 1

0.G36 1

0.036 1

0.036 1

0.036

-~

Reducer 0

0.000 0

0.000 0

0.000 0

0.000 V & F Total K =

1.970 1.613 1.613 1.970 RHR/CS NPSH Calc 04-APR-97 File = RHRSST02.XLS

Table 3 - Pipe Line Losses (Eq1)

(Eq3)

(Ref a)

(Ref 7)

(Eq4)

(Eq5)

Valves &

y y

QQ Reynolds Pipe Relative Pipe Fittings Pipe y

Gg h pipe H

c Flow Rate Velocity V Number Roughness Friction honu-t

,h, Pipe No.

Q (gpm)

(ft/sec)

Re e/D Factor f (ft)

(ft) m M

For Torus Testing Temp Tpoot (F) =

80.00 g

g Z

CS A-1 3300 4.53 6.93E+05 0.00035 0.0160 0.728 0.280 g

CS A-2 3300 10.65 1.06E+06 0.00053 0.0170 0 159 0.032 u

z E

N CS 3-1 3300 4.53 6.93E+05 0.00035 0.0160 0.728 0.280 CS B-2 3300 10.65 1.06E+06 0.00G53 0.0170 0.159 0.032 Qm H

RHR A 4800 6.59 1.01E+06 0.00035 0.0160 1.329 0.706 RHR B 4800 6.59 1.01E+06 0.00035 0.0160 1.088 0.420 E

g k

g RHR C 4800 6.59 1.01 E+06 0.00035 0.0160 1.088 0.420 RHR D 4800 6.59 1.01E+06 0.00035 0.0160 1.329 0.706

?

O For Torus Peak Temp Troat (F) =

l 120.00 l CS A-1 4400 6.04 1.41 E+06 0.00035 0.0158 1.295 0.492 CS A-2 4400 14.20 2.16E+06 0.00053 0.0170 0.282 0.057 g

CS B-1 4400 6.04 1.41E+06 0.00035 0.0158 1.295 0.492 CS B-2 4400 14.20 2.16E+06 0.00053 0.0170 0.282 0.057 RHR A 5100 7.00 1.63E+06 0.00035 0.0158 1.500 0.787 c

RHR B 5100 7.00 1.63E+06 0.00035 0.0158 1.228 0.469 RHR C 5100 7.00 1.63E+06 0.00035 0.0158 1.228 0.469 g

RHR D 5100 7.00 1.63E+06 0.00035 0.0158 1.500 0.787 For Torus Peak Temp Tpoot (F) =

l 166.00 l 0

CS A-1 4400 6.04 2.05E+06 0.00035 0.0155 1.295 0.483 U5 CS A-2 4400 14.20 3.15E+06 0.00053 0.0170 0.282 0.057

'CS B-1 4400 6.04 2.05E+06 0.00035 0.0155 1.295 0.483 i

CS B-2 4400 14.20 3.15E+06 0.00053 0.0170 0.282 0.057 cn to 6

i' RHR A 5100 7.00 2.38E+06 0.00035 0.0155 1.500 0.772 RHRB 5100 7.00 2.38E+06 0.00035 0.0155 1.228 0.460 lu u

RHR C 5100 7.00 2.38E+06 0.00035 0.0155 1.228 0.460 3-p RHR D 5100 7.00 2.38E+06 0.00035 0.0155 1.500 0.772 g

I e

E.

d RHR/CS NPSH Calc 04-APR-97 File = RHRSST02.XLS

L1 Table 3 (Crnt.)- Pipe Lins Lesses (Eq 1)

(Eq3)

(Ref 8)

(Ref 7)

(Eq4)

(Eq5)

Valves &

y y

Q. Q g

g Reynolds Pipe Relative Pipe Fittings Pipe y

h nee H

~,

c h var Flow Rate Velocity V Number Roughness Friction t

t 5

Pipe No.

Q (gpm)

(ft/sec)

Re e/D Factor f (ft)

(ft) l For Torus Peak Temp Troot (F) =

178.00 b3 g

g 0

CS A-1 4400 6.04 2.22E+ 06 0.00035 0.0155 1.295 0.483 g

z CS A-2 4400 14.20 3.40E+06 0.00053 0.0170 0.282 0.057 0

CS B-1 4400 6.04 2.22E+06 0.00035 0.0155 1.295 0.483 S

CS B-2 4400 14.20 3.40E+06 0.00053 0.0170 0.282 0.057 O

m RHR A 5100 7.00 2.57E+06 0.00035 0.0155 1.500 0.772 RHRB 5100 7.00 2.57E+06 0.00035 0.0155 1.228 0.460 E

h k

RHR C 5100 7.00 2.57E+06 0.00035 0.0155 1.228 0.460 RHR D 5100 7.00 2.57E+06 0.00035 0.0155 1.500 0.772

n k

1 3

3 o

E 9

8 8

ss o

m b

P E

I a

-E RHR/CS NPSH Calc 04-APR-97 File = RHRSST02.XLS

Ttble 4 - Total Suction Less (Table 3)

(Table 3)

(Table 1)

(Eq6)

(Eq2)

(Eq 7)

Total Total (n

c o

o Valve &

Total Piping Clean Suction Suction Velocity Suction m

~O N

N Fitting Head Loss Strainer Head Loss Head @ Pl Pressure Q

9 O

h smesa hst hv Drop Flow Rate Losses h var he m t

t Pump No.

Q (gpm)

(ft)

(ft)

(ft)

(ft)

(ft)

(psi)

C g

[

k For Torus Testing Temp Tpoot (F) =

80.00 Core Spray A 3300 0.887 0.312 0.13560 1.335 1.762 1.338 Core Spray B 3300 0.887 0.312 0.13560 1.335 1.762 1.338 3

g RHR A 4800 1.329 0.706 0.28689 2.321 0.674 1.294 O

M

-i RHR B 4800 1.088 0.420 0.28689 1.795 0.674 1.067 RHR C 4800 1.088 0.420 0.28689 1.795 0.674 1.067 g

RHR D 4800 1.329 0.706 0.28689 2.321 0.674 1.294 CD For Torus Peak Temp Troot (F) =

l 120.00 l g

Core Spray A 4400 1.577 0.549 0.24107 2.366 3.132 2.357 Core Spray B 4400 1.577 0.549 0.24107 2.366 3.132 2.357 RHR A 5100 1.500 0.787 0.32388 2.610 0.761 1.445 RHR B 5100 1.228 0.469 0.32388 2.020 0.761 1.192 I

RHR C 5100 1.228 0.469 0.32388 2.020 0.761 1.192 RHR D 5100 1.500 0.787 0.32388 2.610 0.761 1.445 For Torus Peak Temp Tpoot (F) =

l 166.00 l Core Spray A 4400 1.577 0.539 0.24107 2.357 3.132 2.321 Core Spray B 4400 1.577 0.539 0.24107 2.357 3.132 2.321 3

RHR A 5100 1.500 0.772 0.32388 2.595 0.76i 1.419 o

RHRB 5100 1.228 0.460 3.32388 2.011 0.761 1.172 RHR C 5100 1.228 0.460 0.32388 2.011 0.761 1.172 Q

g RHR D 5100 1.500 0.772 0.32388 2.595 0.761 1.419 g

g For Torus Peak Temp Troot (F) =

l 178.00 l Core Spray A 4400 1.577 0.539 0.24107 2.357 3.132 2.312 o

o Core Spray B 4400 1.577 0.539 0.24107 2.357 3.132 2.312 i-p RHR A 5100 1.500 0.772 0.32388 2.595 0.761 1.414 0

z 0

5.

RHRB 5100 1.228 0.460 0.32388 2.011 0.761 1.168 E

E RHR C 5100 1.228 0.460 0.32388' 2.011 0.761 1.168 RHR D 5100 1.500 0.772 0.32388 2.595 0.761 1.414 RHR/CS NPSH Calc 04-APR-97 File = RHRSST02.XLS i

T h

Table 5 - NPSH & Max Suction dP (Table 4)

(Eq8)

(Ref S&6)

(Eq9)

(Eq 10)

Q

~

O Q

Available Max Suction m

Suction Suction Total Margin for dP

>O g

5 g[

Torus Elev Head Wetwell Available LOCA Measured M

Temp Vapor Spec Head Loss Press Available Required Margin Debris

@ IST w

g g

Tecxx Press Pvp Volume Vsp hz hst Pc NPSHA NPSHa NPSHu NPSHu Conditions m

(F)

(psia)

(ft /lbm)

(ft)

(ft)

(psig)

(ft)

(ft)

(ft) -

(ft)

(psi)

H 3

m-t Core Spray Pumps A & B @ 4400 GPM:

166.00 5.4820 0.016428 12.50 2.38 0.000 31.96 29.00 2.96 0.96 1.82 k

h 0.500 33.15 29.00 4.15 2.15 1.82 N

3.635 40.56 29.00 11.56 9.56 1.82

?

5.600 45.21 29.00 16.21 14.21 1.82 RHR Pumps A & D @ 5100 GPM:

166.00 5.4620 0.016428 12.50 2.62 0.000 31.72 23.00 8.72 6.72 2.06 O

0.500 32.91 23.00 9.91 7.91 2.06 3.635 40.32 23.00 17.32 15.32 2.06 5.600 44.97 23.00 21.97 19.97 2.06 RHR Pumps B & C @ 5100 GPM:

g 166.00 5.4620 0.016428 12.50 2.02 0.000 32.32 23.00 9.32 7.32 1.83 0.500 33.51 23.00 10.51 8.51 1.83 3

3.635 40.92 23.00 17.92 15.92 1.83 o

5.600 45.57 23.00 22.57 20.57 1.33 Q

o o

o m

m Note: Wetwell pressure of 0.500 psig corresponds to the initial containment pressure.

.1

.1 Wetwell pressure of 3.635 psig is the minimum required pressure at 166F to maintain the minimum

.g

.g i-p NPSH margin of 11.56 ft from Table 7 for the limiting Core Spray Pump.

Wetwell pressure of 5.600 psig is the equilibrium pressure at the 166F peak pool temperature.

g g

R-RHR/CS NPSH Calc 04-APR-97 File = RHRSST02.XLS

Table 6 - NPSH & Max Suction dP 0

m (Table 4)

(Eq 8)

(Ref S&6)

(Eq9)

(Eq 10) m r-r-

O g

Available Max Suction m"

Suction Suction Total Margin for dP N

g 5

W Torus Elev Head Wetwell Available LOCA Measured g

j Temp Vapor Spec Head Loss Press Available Required Margin Debris

@ IST w

T g

Tpocx.

Press Pvp Volume b hz ha Pc NPSH NPSHa NPSHu NPSHu Conditions m

4 (F)

(psia)

(ft /lbm)

(ft)

(ft)

(psig)

(ft)

(ft)

(ft)

(ft)

(psi) 3 m

Core Spray Pumps A & B @ 4400 GPM:

178.00 7.1840 0.016498 12.50 2.38 0.000 27.97 29.00

-1.03

-3.03 n/a 0.500 29.15 29.00 0.15

-1.85 n/a (D

k 4.980 39.80 29.00 10.80 8.80 1.82 N

3D 7.400 45.55 29.00 16.55 14.55 1.82 O

RHR Pumps A & D @ 5100 GPM:

178.00 7.1840 0.016498 12.50 2.62 0.000 27.73 23.00 4.73 2.73 2.06 0.500 28.91 23.00 5.91 3.91 2.06 4.980 39.56 23.00 16.56 14.56 2.06 7.400 45.31 23.00 22.31 20.31 2.06 RHP Pumps B & C @ 5100 GPM:

178.00 7.1840 0.016498 12.50 2.02 0.000 28.33 23.00 5.33 3.33 1.83 0.500 29.51 23.00 6'.51 4.51 1.83 j

4.980 40.16 23.00 17.16 15.16 1.83 o

7.400 45.91 23.00 22.91 20.91 1.83 y

y Q

B B

=

=

Note: Watwell pressure of 0.500 psig corresponds to the initial containment pressure.

.i

.1 Wetwell prassure of 4.980 psig is the minimum required pressure at 178F to maintain the minimum y

y NPSH margin of 10.80 ft from Table 7 for the limiting Core Spray Pump.

j p

Wetwell pressure of 7.400 psig is the equilibrium pressure at the 178F peak pool temperature.

O g

E.

O RHR/CS NPSH Calc 04-APR-97 File = RHRSST02.XLS

Table 7 - NPSH & Mix Suction dP (Tabla 4)

(Eq 8)

(Ref S&6)

(Eq9)

(Eq 10)

Available Max Suction Suction Suction

. Total Margin for dP y

Q Q'

Torus Elev Head Wetwell Available LOCA Measured rn g

g U

i c

Temp Vapor

. Spec Head Loss Press Available Required Margin Debris

@IST A

NPSHa NPSHu NPSHu Conditions h

Tm Press Pvp Volume Vsp hz hst Pc NPSH (F)

(psia)

(ft'Kom)

(ft)

(ft)

(psiO)

(ft)

(ft)

(ft)

(ft)

(psi) g-h g

Core Spray Pumps A & B @ 4400 GPM g

z.

Max Temp @ 0 psig:

112.00 1.3505 0.016173 12.50 2.38 0.000 41.20 29.00 12.20 10.20 1.82 S

[

O

~ -4 m

115.00 1.4716 0.016184 12.50 2.38 0.000 40.94 29.00 11.94 9.94 1.82 i

119.00 1.6468 0.016200 12.50 2.38 0.000 40.56 29.00 11.56 9.56 1.82 Q

N 3

126.00 1.9959 0.016229 12.50 2.38 0.000 39.80 29.00 10.80 8.80 1.82 k

RHR Pumps A & D @ 5100 GPM Max Temp @ 0 psig:

112.00 1.3505 0.016173 12.50 2.62 0.000 40.96 23.00 17.96

'15.96 2.06 j

115.00 1.4716 0.016184 12.50 2.62 0.000 40.70 23.00 17.70 15.70 2.06 119.00 1.6468 0.016200 12.50 2.62 0.000 40.32 23.00 17.32 15.32 2.06 i

126.00 1.9959 0.016229 12.50 2.62 0.000 39.56 23.00 16.56 14.56 2.06 m

RHR Pumps B & C @ 5100 GPM SE Max Temp @ 0 psig:

112.00 1.3505 0.016173 12.50 2.02 0.000 41.56 23.00 18.56

'16.56 1.83 f

a o

115.00 1.4716 0.016184 12.50 2.02 0.000 41.30 23.00 18.30 16.30 1.83 119.00 1.6468 0.016200 12.50 2.02 0.000 40.92 23.00 17.92 15.92 1.83 126.00 1.9959 0.016229 12.50 2.02 0.000 40.16 23.00 17.16 15.16 1.83 E'

I a

a 1

+

~

Note: This data gives the point of Minimum NPSH Margin during the cooldown when Pc drops to O psig. _

7 The 112 & 115 deg F data corresponds to the 1% per Day leakage case for 65 & 75 deg F heat sinks.

The 119 & 126 deg F data corresponds to the 5% per Day leakage case for G5 & 75 deg F heat sinks.

RHR/CS NPSH Calc 04-APR-97 File = RHRSST02.XLS i

- ~ - -

cat.CULATION SHEET PREPARED BY: P.Doody gg ggyg CALC.#

M662 CHECKED BY:

P.D. Harizi REV.

L4 E2 DATE 2/29/96 SHEET NF OF B4 82 Section 4.0 Updated FSAR NPSH Analyses and Firures Section 4.A Method of Solution This section of the calculation prepares updated NPSH analysis for the FSAR. The original analysis was j

submitted to the AEC during the original licensing review via Amendments 9 and 24 to the SAR. His analysis was incorporated into the FSAR and remains there currently as FSAR Figures 14.5-9,14.5-10, and 14.5-13 and Section 14.5.3.1.3. The revised analysis in this calculation will be incorporated in the UFSAR by the 10CFR50.59 process.

The same appmach used in the original FSAR analysis is used. Considering a known suppression pool temperature profile, the coincident containment pressure is calculated using the ideal gas law. The 4

" containment pressure required" to provide the required NPSH is calculated and plotted with the coincident containment pressure. The difference between the containment pressure at any point in time and the containment pressure required represents margin. All calculation results are presented in various plots.

4

CAL.CULATION CHEET PREPARED BY; P.Doody

& Boston Edison CALC."#

M662 CHECKED BY:

P.D. Harizi -

REV.

EtE2.

DATE 2/29/96 SHEET M

OF kN Section 4.B Input Data and Assumptions Table 8 - Section 4 Inputs Amendment 9 Ref.

65 FSeawater Ref.

75 FSeawater Ref.

Parameter Benchmark

• see Temperature

• See Temperature

• See N*I N*I N*1 Revised Analysis Revised Analysis g Containment Leakage Rate

.5%/ day 31,33c 1%/ day 3df 1%/ day 34f Impaired Containment 5%/ day 31,33c 5%/ day 33c 5%/ day 33c Leakage Rate y Pool temperature profile Amendment 9 31,33c FSAR Fig.14.5-7 33d (6)

Figure 5-2 from referenced 37(8)

Figure 1-2 (FSAR report.

Fig.14.5-10)_,

l 31,33c Ultimate Heat Sink 65 *F 65 F 33c 75 *F 37 Temperature' Operator action time to 10 min 33b 10 min 33b 10 min 37 initiate containment cooling'

[ SSW Flowrate' 5000 gpm 33d 5000 gpm 33e 4500 gpm 37 2

+

[ Core Spray NPS11 Required 28 feet 31,33c 29 ft at 4400 gpm 8

29 ft at 4400 gpm j

8 i RHR NPSli Required 28 feet

, 31,33c 23 ft at 5100 gpm 9

- 23 ft at 5100 gpm 9

I Drywell Free Volume 147,000 ft' 33a 147,000 ft' 33a 147,000 ft' 33a Wetwell Free Volume

[

120,000 11' 33a 124,500 ft' 35a 124,500 ft' 35a Torus Water Volume 5.2E6 lbm -

' 31,33c 84000 ft' 34a 84000 ft' 34a j

i Initial Torus Water 80 F 31,33c 80 F 34c 80 F 34c

{

i

, Temperature Initial Drywell Relative 100 %

31,33c 80 %

(5) 80 %

(5)

Humidity

' This parameter is an input for calculation of the suppression pool temperature profile.

I 2 The current FSAR requirement for SSW flowrate is 4500 gpm and it has been determined that the suppression pool temperature profile Figure 14.5-7 is unaffected by the reduced flow based on heat exchanger performance.

CALCULATION SHEET PREPARED BY: _F.Doody Mon Edisors CALC.#

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K E2. __ DATE 2/29,96 SHEET M

OF M 82 Table 8 - Section 4 Inputs Amendment 9 Ref.

65*F Seawater Rii.

75 FSeawater Ref.

Parameter Beachmark see Temperature see Temperature see i

Note 1 Ne:.e 1 Nme1 Revised Analysis Revised Analysis Initial Wetwell Relative 100 %

31,33c 100 %

33c 100 %

33c Humidity InitialWetwell Airspace 80'F 31,33c l 80 F (3) 80 F (3)

Temperature I

, Initial Drywell Temperature [

150*F 31,33c 150 F

, 33c (4) [

150*F j 33c(4)

Initial Dryv.d! Pressure O psig 31,33c 1.30 psig

[.

(2) 1.30 psig (2)

InitialVvetv. ell Airspace o psig 31,33c 0 psig 33c 0 psig 33c Pressure i

Containment Reference n/a 45 psig or 59.696 34f 45 psig or 59.696 psia 34f Pressure Pr psia Containment Reference Leak n/a l'Nday ofMt 34f l'Nday ofMt 34f

, Rate Lr RIIR Pump Suction line 4.2 feet (7) 2.63 feet Table 5.

2.63 feet Table 5. l Head Loss j

CS Pump Suction line Head 4.2 feet (7) 2.40 feet Table 5.

2.40 feet Table 5.

l Loss Elevation head 12.5 feet Section 12.5 feet Section 12.5 feet Section I, 3.C.2.b 3.C.2.b 3.C.2.b Notes for Table 8 1.

Numbers in parentheses refer to the following notes. Numbers not in parentheses refer to the corresponding references at the end of this section.

2.

Initial "Drywell Airspace Pressure" is assumed equal 1.30 psig which is a conservative nominal value for drywell pressure based on a review of randomly selected summer and winter drywell pressures. Drywell pressure, temperature, and humidity along with wetwell pressure, temperature and humidity are used to calculate the initial mass of noncondensible gas inside containment. The combination of the values selected for each of these six parameters provides a conservative estimate of the initial mass of noncondensible gas.

.-.-.x

. -. -.-.--- -.. -. - - -- - - - - ~ ~ - -.. -.... - -.... - - ~ ~. -. ~ -..

i cal-

'%fST PREPARED BY: P.Doody h SOS $Of Edisors cal.C. #,

CHECKED BY; P.D. Marial REV.

IK E2.

m.f 2129f96 SHEET 26 OF M 82 r

Section 4.B Inout Data and Assumptions

3. Initial wetwell airspace temperature is assumed to equal the initial suppression pool temperature.

4.

Initial Drywell Temperature is assumed to equal a uniform value of 150*F instead of the 135'F (General area a..p 4.re per Table

'[

5.2-2 "Drywell Ati.;uwhere Cooling Data Sheet") which is used in containment and decay heat removal system analysis [Ref.14]. A higher initial temperature is conservative becaase less initial noncondensible mass is present in containment. ~ll.mJo., the partial J

pressure of noncondensible gas is less initially and less over the course of the transient and cooldown resulting in a lower (conservative)

NPSHA calculation.

5. De initial drywell humidity used is 20% less than that assumed in the Ai.wd;; cat 9 analysis. A lower humidity at a given pressure results in a higher initial mass of noncondensible gas in the containment. This design value remains conservative since the drywell is initially inerted with dry nitrogen and then scaled A leak inside containment will raise the humidity, offset by coin wion on drywell surfaces and the drywell cooling coils.

[

6. A table of values for suppression pool temperature as a function of time after the accident is taken from the pool temperature curve j

specified in the above table.

L 7.

A.iwd;.c.;; 9 analysis was prepared before the actual piping configuration was known De sucten line head loss used in the i

bed..zrk analysis was estimated betwe 4.2 and 4.7 feet. Use of the value of 4.2 feet gives good agreement between the beid. rk case for Figure 14.5-10. Use of the value of 4.7 feet gives good agreement between the benchmark case and Figure 14.5-9. De suction line head losses are somewhat lower based on the as-built piping configuration.

8. The data table for the suppression pool temperature curve contained in reference 37 was providexi via the GE letter iJuu.cc 38.

Selected data points for the suppression pwl temperature as indicated in the attached tables for 75*F seawater NPSH analysis were taken from reterence 38. Between 4 and 5 days,17 additional pool temperature data pouns were established by linear interpolaten between the pool temperature at 4 days and 5 days. Dese additional data points were necessary to find the point of minimum margin which occurs before the 5th day for the 5%fday leakage case. Between 7 and 8 days,9 additional pool temperature data points were established by linear interpolation between the pool temperature at 7 days and 8 days. Rese additional data points were necessary to j

find the point of minimum margin which occurs before the 8th day for the 1%/ day leakage case.

l I

i i

t i

h

'h

J -

a + -

,,1 l

CALCULATION SHEET g g ggy PREPARED BY: P.Doody CALC.#

M662 CHECKED BY:

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IM E2.

DATE 2/29/96 SHEET 29 OF M 62.

l l

Section 4.C Calculations / Analyses Section 4.C.1 Definition of Terms Hz Elevation ofsupp essionpool water surface above the pump inlet, ft Hsl Suction line losses,ft Lr Reference mass leakage rate at reference pressure Pr, lbm'sec Aft Initial mass ofdry air inside the drywell and suppression chamber, ihm Aft

• Mass ofdry air remaining inside the drywell and suppression chamber after leakage, ibm m,

Afass ofair/ nitrogen in mixture, Ibm /sec ga mieak Afass leakage ratefrom containment, Ibm /sec Mass ofwater vapor in mixture, Ibm'sec mwater NPSHA Net positive suction head available, feet NPSHAf Netpositive suction head margin, feet NPSHR Net positive suction head required, feet Pc Pressure ofprimary containment, psia Pc Req 'd Pressure ofprimary containment required to provide NPSHR, psia Pd initialpressure of drywell, psia Pgas Pressure ofgas in a mixture ofgas and water vapor, psia Pwater Pressure ofwater vapor in a mixture ofgas and water vapor, psia Ps initialpressure ofsuppression chamber air space, psia Pr Reference pressurefor mass leakage rate Lr, psia Pvd Partialpressure ofvapor initially in drywell, psia Pvs Partialpressure ofvapor initially in suppression chamber airspace, psia Pvp Vapor pressure atpool temperature, psia R or Rgas Specific gas constantfor air / nitrogen, 33.3ft-lbfIbm *R Rwater Specipe gas constantfor water vapor, 83.8ft-lbfibm *R AT Length oftime step, sec Td Temperature ofgas and water mixture in drywell. *R Tp Temperature ofsuppression pool water, *F Ts Temperature ofgas and water mixture in suppression chamber, *R Vs Volume offree air space in suppression chamber,ft' Vd Free doywell volume,ft' p

Densityofwater inpool, Ib/ft' Relative humidity

\\

m Humidity Ratio t

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DATE 2/29/96 SHEET 30 OF hk @2, Section 4.C.2 Eaustions I

An expression for calculating the initial mass of noncondensible gas inside the drywell and toms can be derived based on the ideal gas law:

PV = MRT Solving for the mass (M):

y = PV RT The total initial mass of noncondensible gas inside containment is the sum of the initial mass located in two separate volumes (torus airspace, and drywell):

Mt = Md + Ms The initial mass in each volume is composed of water vapor and noncondensible gas (air / nitrogen). To calculate the initial mass of noncondensible gas, the contribution to the initial pressure from water vapor is subtracted.

The magnitude of this water vapor contribution is a function of relative humidity p and the saturation pressure corresponding to the mixture temperature:

Per Dalton's Rule:

Pmixture = P as + Pwater vapor a

g P as = Pmixture -Pwater vapor so g

1. = Pwater vapor

.and Pwater vapor = $ Psp 1

p Equation 1I is used to calculate the total initial mass in the drywell and wetwell airspace. As discussed above the equation is derived from the ideal gas law, Dalton's rule and the definition of relative bumidity. *lhe result of Equation 11 provides the initial mass of noncondensible gas in primtry containment:

'Pd-($ Pvd) (144

)Vd

~Ps-($ Pvs)(144

)Vs Eq.1I Mt=

+

R Td R Ts Equation 11 is the general equation to calculate the initial mass of noncondensible gas inside containment as a function ofinitial pressure, humidity, and temperature. Amendment 9 analysis used Eq.12 which is derived from Eq. I1 by setting dowell pressure equal to 14.7 psia (0 gage), wetwell airspace pressure equal to 14.7 psia (0 gage), and drywell and wetwell humidity equal to 100%. Equation 12 was used to calculate the Amendment 9 FSAR curves.

(14.7 - Pvd)(144 " )Vd (14.7 - Pvs)(144 '" ) Vs A

A Eq.12 Mr=

+

R Td R Ts

. ~. -. -..

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REV.

E(E1.

DATE 2/29/96 SHEET 3l' OF M 8 2.

j q

!~

Section 4.C.2 Eaustions

)

Equations' 13a and 13b were used in the Amendment 9 analysis to calculate the percentage of the original mass of noncondensibles in containment after 1.5 days:

I -

Eq.13a At 5% per day:

Af * =(095)l3Af = 0926Af f

f f

i Eq.'13b At 0.5% per day' Af * =(0995)l5Af =09925Aff f

f E

i The above ratio's for 5%/ day and 0.5%/ day were applied as a flat amount in Amendment 9 analysis. Although conservative, this approach is unrealistic and arbitrary. FSAR Appendix R (Equation R.49) provides a rational basis for calculating the leakage from containment based on the calculated pressure during any time step, and a i

reference leakage at a reference pressure. This equation is presented as Equation 14:

i

- 0.5 4

ep2 t

1-Ps r

Eq.14 mleak = LT (atmosphere's) s2 1

l-l

< Pr> _

}

Where: Lr

= Leak rate at referencepressure l

(Ibm' unit time)

Pr

= Reference pressure in atmospheres P

= Containmentpressure at time step in atmospheres Equation 14 is modified as shown in Equation 15 to calculate leakage as a function of pressure measured in units of psia.

- 0.5 l

14.696*#

< Pc >

Eq.15 mleak = LT (Psia)

,2 14.696 Pr s.

s Only a portion of the mass leaked from the contamment is gas since the mixture leaking from containment is a mixture of water vapor and noncondensible gas. The humidity ratio "co" can be used to determine the amount of dry gas contained in the vapor / gas mixture. This ratio is derived from the ideal gas law since Vair=Vwater (i.e.,

the water vapor and gas are homogeneously mixed in the containment volume (drywell and wetwell) and Tair =

Twater (i.e., both the water vapor and gas are at the suppression pool temperature). Equation 16 which provides the humidity ratio based on the ratio of gas and water vapor pressure is derived from the ideal gas law as follows:

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E462.

DATE 2/29/96 SHEET 32-OF Sk 81 Section 4.C.2 Egu.atkn2 m_mwater, Rgas Pwater _ 53.3 Pwater mgas Rwater Pgas 85.8 Pgas 1

& = 0.621 l

Pgas Pgas = Pc-Prp l

Psp Eq.16 m = 0.621 Pc-Psp Since "mi,ak" from Equation 15 is a mixture gas and water vapor where:

micak = mwater + mgas and W=

mgas Sohing for and mwater :

water = m mgas m

Substituting a mgas for mwaterin the first equation yields:

mieak = m mgas + mgas Sching for mgas yields:

mleak Eq.17 m8"# = (m + 1)

Equation 17 provides the mass of noncondensible gas in a mixture with total mass equal to mf,ok and a humidity ratio a).

The ncncondensible gas remaining in contamment at any time after the containment isolates is the initial mass minus the mass of noncondensible gas that has leaked. The remaining mass (Mt*) is calculated by the following formula:

Mt* = Mt - { (m +ak (g) mle Eq.18 1) l I

t i

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_M El DATE 2/29/96 i

SHEET 33 OF M 91 1

Section 4.C.2 Eaustions Equation 19 is used to calculate the containment pressure at any time as the sum of the partial pressure of the remaining noncondensible gas and the vapor pressure corresponding to the suppression pool temperature.

Pc = Mt

• R Tp ' ft'

~

+ Pip Eq.19 Vd + Vs

<144in',

NPSHA is defined by the following terms:

e p

144 Eq.20 NPSHA = (Pc-Pvp) '

I' ' + Hz - H,;

P The term (Pc-Pvp) represents the net pressure above the vapor pressure provided by the noncondensible gas inside containment. Therefore:

Eq.21 Pgas = (Pc - Pvp)

NPSHA is calculated as follows, where Pgas is measured in feet of water:

e 144in',

b Eq.22 NPSHA = Pgas ~

+ H: - Hsl P

The containment pressure required to provide adequate NPSH is derived using Equation 20 by letting NPSHA equal NPSHR and solving for the containment pressure Pc. When NPSHA equals NPSHR the cc ainment pressure is by defmition equal to the required containment pressure Pc Reg 'd.

Eq.23 Pc Reg'd = Psp +(NPSHR - H: + Hsi), A,,

144 D's The NPSH margin is the difference between the containment pressure that is available (calculated using Equation 19) and the containment pressure required (calculated using Equation 23).

.2 144 Eq.24 NPSHM =(Pc-PcReg'd) '

P or NPSHM = NPSHA -NPSHR

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M662 CHECKED BY:

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M EZ DATE 2/29/96 SHEET

_TY OF

% B1 I

Section 4.C.2 Eaustions The following three equations are general conversions used throughout this calculation e

j44 in Eq.25 P(feet)=P(psi) 7 s

lb /

P 3

s Ibm /

j A

3 Eq.26 P(psi)= P(feet)

' /9 ',

r r

144 in Eq.27 T( R)= T( F)+460 i

l 1

i i

l 4

l t

I

$ Boston Edison CALCULATION SHEET PREPARED BY: P.Doody l

CALC.#

M662 CHECKED BY:

P.D. Harizi REV.

E4.El DATE _ 2/20/96 l

SHEET 3

OF

$$81-Section 4.C.3 Benchmark Case The calculation performed to prepare the curves currently presented in the FSAR is repeated to benchmark the

]

methodology, This case is the first case performed and is hereafter referred to as the " Benchmark Case" Per Amendment 9 to the FSAR, the following methodology is used:

1.

Calculate the initial mass of air [or nitrogen] inside the primary containment assuming atmospheric pressure and a 100% relative humidity in both the wetwell and drywell. The initial drywell temperature was assumed to be 150*F, and the wetwell temperature 80 F. The total mass is given by Equation 12.

2.

Assume the containment leaked at a constant rate of 5% free vol/ day for 1.5 days, the time required following an accident for the pool temperature to retum to 130 F with ene RHR loop operating. The reduced mass is then given by Equation 13a and 13b.

3.

Due to flow through the drywell vents or vacuum breakers, the drywell and wetwell pressures will be approximately equal, i.e., Pd = Ps.

4.

The drywell and wetwell airspace masses and volumes can be combined and the containment (drywell and wetwell) pressure calculated as a function of the suppression pool temperature for the following reasons:

)

a)

Water from the pool is being pumped into the reactor vessel by a core spray cooling system pump. This water is heated by the decay heat of the reactor core and pours out of the vessel via the break and into the suppression pool via the drywell vent system. The water which returns to the wetwell is hotter than the suppression pool water by approximately 50*F.

b)

Because of the large flow of water involved, the low thermal capacity of the drywell atmosphere, and the slow time rate of change of the temperature of the water flowing through the drywell, the drywell atmospheric temperature will track the water temperature.

c)

The drywell airspace temperature will always be hotter than the pool temperature because of the elevated temperature of the break flow.

5.

The containment pressure is then given by Equation 19.

6.

The total NPSH available to the pumps is given by Equation 20.

4

CALCULATION SHEET PREPARED BY; P.Doody

& Boston Edison CALC. #

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h4. E'2.

DATE 2/29/96 SHEET 76 OF k 82 Section 4.C.3 Benchmark Case In following table the methodology used to calculate values plotted on FSAR Figure 14.5-10 is repeated. Based on a comparison, the values contained in the following table and plotted on the attached Figure 2 are consistent with the results presented in the FSAR Figure 14.5-10. He minor differences in calculated values are most likely due to small variations with inputs.

Table 9 - Benchmark Case Containment Pressure Available and Required at 0.5% and 5%/ day Leakage F14.5-10 Eq.27 Lookup Eq.13a Eq.19 Eq.21 Eq.13b Eq.19 Eq.21 Eq.23 Aft *iAft @

5%'dav Aft *iAft @

Pc Reg'd Jbr Leakage Pc@5%

0.5%' day Pc @ 0.5%

NPSilil of28 Time Pool Temp Tp Pvp Rate Leakage Pgas (feet)

Leakage Rate Leakage Pgas 11z list feet (psia)

(sec)

(*F)

(*R)

(psia)

(w (psial

(%)

(psia)

(feet)

(feet)

(feet)

Values below Values below '

Values below Values below plotted on plotted on plotted on plotted on Figure 2 Figure 2 Figure 2 Figure 2 U

U U

U 100 126.0 586 1.996 0.926 14.6 %

29.68 0.9925 14.6 %

29.68 12.5 4.2 10.42 l

I f

126.2 586 2.007 0.926 14.696 29.66 0.9925 14.6 %

29.66 12.5 4.2 10.44 200 300 I

127.3 587 2.069 I 0.926 14.6 %

29.52 0.9925 14.732 I 29.61 12.5 4.2 10.49 I

400 128.8 589 2.153 O.926 14.696

} 29.34 0.9925 14.849 29.70 12.5 4.2 10.58 500 130.0 590 2.225 0.926 I4.6 %

29.I8 0.9925 14.947 29.77 12.5 4.2 10.64 f

600 f

131.0

{29.82 591 ' 2.286 }

0.926 14.696 29.04 0.9925 15.029 12.5 4.2 10.70 700 132.0 592 2.347 0.926 14.696 28.91 0.9925 15.III 29.88 12.5 4.2 10.76 800 133.0 593 2.407 0.926 14.696 28.77 0.9925 15.194 29.94 12.5 4.2 10.82 900 134.0 594 2.473 i 0.926 14.696

' 28.63 0.9925 15.281 30.00 " 12.5, 4.2 10.88 1000 134.8 595 2.526 l 0.926 14.696 28.52 j 0.9925 15.351 30.05 12.5 4.2 10.93 i

. 2000 140.5 601 2.928 7 0.926 15.008 28.35 [

0.9925 15.876 30.39 12.5 4.2 11.32

[ 3000 144.5 605 3.242 0.926 15.402 28.57 0.9925 16.276

' 30.62 12.5 4.2 11.63

[ 4000 147.5 608 3.496 0.926 15.717 28.74 0.9925 16.595 30.81 12.5 4.2 11.87

}

CALCULATION SHEET PREPARED BY: P.Doody g goston Edison CALC.#

M662 CHECKED BY; P.D. Harirl REV.,p El DATE 2/29/96 SHEET N

OF M B2, Table 9 - Benchmark Case Containment Pressure Available and Required at 0.5% and 5%/ day Leakage F14.5-10 Eq.27 Lookup Eq.13a Eq.19 Eq.21 Eq.13b Eq.19 Eq.21 Eq.23 Aft %ft @

5Wday Ait%ft @

Pc Reg'd for Leakage Pc @ 5%

0.5Wday Pc @ 0.5%

NPSilA of28 Time Pool Temp Tp Pvp Rate Leakage Pgas (feet) Leakage Rate Leakage Pgas llz lisi feet (psia)

(sec)

(*F) q*R)

(psia) 06)

(psia) 06)

(psia)

(feet)

(feet)

(feet) 5000 150.0 610 3.721 0.926 15.993 28.88 {

0.9925 16.874 l 30.95 12.5 4.2]

12.09 g

6000 152.0 612 3.908 0.926 16.220 28.99 l 0.9925 17.104

} 31.08 12.5 4.2 12.27 7000 154.0 614 4.103 0.926 16.454 29.1I a 0.9925 17.342

' 31.20 12.5 4.2 12.46 8000 I

I56.0 616 4.311 0.926 I6.703 29.22 0.9925 17.593

, 31.32 [ 12.5 4.2 12.67 j

9000 157.5 618 4.468 0.926 16.890 29.31 0.9925 17.782 31.41 12.5 4.2 12.82 10000 159.0 619 4.633 0.926 17.085 29.39 0.9925 17.980 31.50 12.5 4.2 12.98 15000 163.2 623 j 5.118 0.926 17.655 29.63 0.9925 18.555

' 31.76 12.5 4.2 13.45 20000 165.0 625 5.336 0.926 17.909 29.73 0.9925 18.812 31.87 12.5 4.2 13.67 25000 165.5 626 5.401 0.926 17.984 29.76 0.9925 18.888 31.90 12.5 4.2 13.73 f

30000 165.0 625 5.336 0.926 17.909 29.73 0.9925 18.812 31.87 12.5 4.2 13.67 40000 162.0 622 4.972 0.926 17.485 29.56 0.9925 18.384 31.68 12.5 4.2 13.31 50000 }

158.2 618 } 4.542 0.926 16.979 29.35 0.9925 17.872 i 31.45 12.5 4.2 12.89 g

154.0 614 4.103 0.926 16.454 29.I I 0.9925 17.342 31.20 12.5 4.2 12.46 60000 70000 149.0 609 3.631 0.926 15.882 28.82 0.9925 16.762 30.89 12.5 4.2 12.00

' 30.59, 12.5 4.2 '

i1.59 f

144.0 604, 3.200 0.926 15.350 28.54 0.9925 16.223 80000 j

90000 140.0 600 2.889 0.926 14.959 28:32 0.9925 15.826 30.36 12.5 4.2 11.28 100000 136.5 597 2.640 0.926 14.6 %

28.26 0.9925 15.502 30.15 12.5 4.2 11.04 150000 }

125.5 586 } 1.970 0.926 14.696 29.74 0.9925 14.696 29.74 12.5 4.2 i 10.40 f

118.0 578 1.601 0.926 14.696 30.55 0.9925 14.6 %

30.55 12.5 4.2 10.05 200000 i

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CALCtJLATION SHEET PREPARED BY: P.Doody

& Boston Edison CALC.#

M662 CHECKED BY:

P.D. Harizi REV.

M E2 DATE 2/29/96 SHEET N

OF k O2 Section 4.C.3 Benchmark Case In following table the methodology used to calculate values plotted on FSAR Figure 14.5-9 is repeated, and the results of the recalculation are plotted. Based on a comparison, the values contained in the following table and plotted on the attached Figure 3 are consistent with the results presented in the FSAR and Amendment 9. The minor differences in calculated values are most likely duc to small variations with inputs.

Table 10 - Benchmark Case NPSH Available and Required l Eq. 27 Lookup Eq.13a Eq.19 Eq.21 Eq.22

[

Pool Ast*/ Aft @ 5%

Pc @ 5%

Temperature Tp hp iIz 1Ist Leakage Leakage Pgas NPSI(A NPS11R rF)

PR)

(psia)

(feet)

(feet) 06)

(psia)

(feet)

(feet)

(feet)

Values below plotted on Figure 3 Values below plotted on Figure 3 f

f 140 i 600 2.889 12.5 4.2 0.926 14.959 28.3 36.6 28 f

150 610 3.721 12.5 4.2 0.926 15.993 28.9 37.2 28 160 620 4.746 12.5 7.2 0.926 17.219 29.4 37.7 28 170 630 5.995 12.5 4.2 0.926 18.669 30.0 38.3 28 f

f 180 640 i 7.511 i 12.5 4.2 0.926 20.386 30.6 38.9 28 Eq.27 Lookup Eq.13a Eq.19 Eq.21 Eq.22 Pool Aft %ft @.5%

Pc@.5%

Temperatun-Tp hp Ifz list Leakage Leakage Pgas NPS1[A NPSilR rF)

(R)

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(feet)

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1 1

SOSf0DEdSOn ENE E R%

CALCULATION SHEET CALC. #

M662 CHECKED BY; P.D. Harizi 4

REV.

N El DATE 2/29/96 4

SHEET ____ 4 0 OF M;-$1--

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... ~ ~. .. -. ~. _ _. -...... _ _ -. - -.. - -. -. -.. ~. g gg ggg CALCULATION SHEET PREPARED BY: P.Doody CALC.# M66'i , CHECKED BY: _P.D. Hirirl j REV. M U-DATE _ 2/29/96 j. SHEET M OF M@ Section 4.C.4 Updated FSAR NPSH Analysis and Firures The calculation performed to prepare the updated FSAR curves is fundamentally consistent with that used in the " Benchmark Case". Revised inputs are utilized in this analysis per Table 8. j The following methodology is used: 1. Calculate the initial mass cf air (or nitrogen] inside the primary containment. Tiu total . initial mass is given by Equation 11: {15.996 - (.80(3.718))}(144 -1(147,000) d .4 4 Mt= +.. j $3.3 (610) {14.696 - (1.0 (.5069)}(144

• 2

)(124,300) b = 17316.12 lbm 33.3 (340) i 2. Calculate the reference leakage rate f.r: i The reference leakage rate is a percentr.ge of the initial mass of noncondensibles per unit time. So for the 1%/ day and 5%/ day cases, the reference leak rate is: L l1%} = 17316.12 lbm (.01/ day) = 173.16 lbm / day or 0.002004 lbm / sec T l L [5%} = 17316.12 lbm (.0S / day) = 865.81 lbm / day or 0.010021 lbm / sec T 1 3. lu successive steps from 100 seconds after the accident till the point of minimum NPSHM is passed, calculate: l a) mass leakage (water vapor + gas) from containment (mleak) using Eq.15 j. b) relative humidity e using Eq.16 c) noncondensible gas leakage from containment (mgas) using Eq.17 d). remaining mass of noncondensible gas in containment (Mi*) using Eq.18 e) containment pressure (Pc) using Eq.19. t This calculation is performed for a: 1%/ Day leakage rate - Table 11 for a 65'F seawater temperature i Table 17 for a 75'F seawater temperature l 5%' Day leakage rate - Table 12 for a 65'F seawater temperature Table 18 for a 75'F seawater temperature a 4. Using the same suppression pool temperature data and time steps from the presious step, calculate the: 4 a) pressure provided by the remaining mass of noncondensible gas in containment 2 (Pgas)is calculated using Eq. 21, b)- NPSHA using Eq. 22, c) ?c Reg 'd using Eq. 23, 4 d) NPSHM using Eq. 24.

___._._____._.m.- g gg ggg CALCULATION SHEET PREPARED BY; P.Doody l CALC.# M662 ' CHECKED BY: P.O. Ht rizi REV. B( 61 DATE _2/29/96 l SHEET 42 OF - M 81 i i These steps are performed separately for the RHR and Core Spray pumps. The results are contained in the following tables: RHR pump at lYdDay leakage rate - 65'F Seawater Temperature (Table 13) RHR pump at 5YdDay leakage rate - 65*F Seawater Temperature (Table 15) CS pump at lYdDay leakage rate - 65'F Seawater Temperature (Table 14) CS pump at SYdDay leakage rate - 65'F Seawater Temperature (Table 16) - RHR pump at lYdDay leakage rate - 75'F Seawater Temperature (Table 19) RHR pump at 5YdDay leakage rate - 75'F Seawater Temperature (Table 21) CS pump at lYdDay leakage rate - 75 F Seawater Temperature (Table 20) CS pump at 5%/ Day leakage rate - 75 F Seawater Temperature (Table 22) 5. As in the Amendment 9 methodology; due to flow through the drywell vents or vacuum breakers, the drywell and wetwell pressures will be approximately equal, i.e., Pd = Ps. The drywell and wetwell airspace masses and volumes can be combined and the containment (drywell and wetwell) pressure calculated as a function of the suppression pool temperature for the following reasons; a) Water from the pool is being pumped into the reactor vessel by a core spray cooling system pump for the 65'F case (by a core spray pump and LPCI pump for the 75'F). This water is heated by the decay heat of the reactor core and pours out of the vessel via the break and into the suppression pool via the drywell vent system. The water e% retums to the wetwell is hotter than the suppression pool water by approximately 50*F. b) Because of the large flow of water involved, the low thermal capacity of the drywell atmosphere, and the slow time rate of change of the temperature of the water flowing through the drywell, the drywell atmospheri temperature will track the water temperature. c) The drywell airspace temperature will always be hotter than the pool temperature because of the elevated temperature of the break flow.

• O

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CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC. it M662 CHECKED BY: P.D. Harizi REV. hEZ DATE 2/28/96 hN SHEET 47 OF Table 11 - Containment Pressure Available @ 1%/ Day Leakage Rate - 65*F Seawater Temperature Lookup Eq.15 Eq.16 Eq.17 Eq.18 Eq.19 AT Mt* Pc Time Tp Tp Pvp mi<an c)

mga, (seconds)

(*F) (*R) (psia) (Ibm'sec) (Ibm'sec) (sec) (Ibm) (psia) 128.75 1 588.75 2.150 17316.12 j 16.049 3 100 128.75 j 588.75 2.150 0.00083 0.096 0.00076 100 17316.04 j 16.049 4 { 200 131.75 591.75 2.331 0.00083 0.0 % 0.00076 100 17315.% 1 16.30I 400 133.10 593.10 2.414 0.00089 0.104 0.00081 200 17315.80 } 16.415 [ 600 133.70 j 593.70 2.453 0.00092 0.107 i 0.00083 200 17315.e>4 l 16.469 4 1000 135.90 595.90 2.598 0.00093 0.109 0.00084 400 17315.30 i 16.665 [ 2000 141.25 601.25 2.986 0.00098 0.115 0.00087 1000 17314.42 j 17.179 { 4000 148.33 i 608.33 3.571 0.00107 0.I3 I i 0.00095 2000 17312.53 l 17.929 6000 153.65 ! 613.65 4.069 i 0.001I8 0.I55 0.00103 2000 17310.48 l8.550 10000 160.70 il20.70 4.825 i 0.00126 0.175 0.00107 4000 17306.18 i 19.470 14000 164.50 624.50 5.275 l 0.00136 0.205 0.00113 4000 17301.68 f 20.006 16000 165.65 625.65 5.421 I 0.00140 0.223 0.00115 2000 17299.39 j 20.176 j 20000 166.40 626.40 l 5.518 0.00142 0.228 0.00115 4000 17294.77 20.287 _ 24000 166.20 ! 626.20 5.492 0.00143 0.232 0.00116 4000 17290.14 20.253 ( 30000 165.03 j 625.03 5.340 0.00142 0.231 0.001I6 6000 I7283.21 20.067 35000 163.63 j 623.63 5.170 0.00141 } 0.226 0.00115 5000 17277.47 j 19.859 40000 162.00 622.00 4.972 0.00139 0.219 0.00lI4 5000 17271.76 i 19.6I8 3 60000 154.00 614.00 j 4.103 0.00137 0.2II 0.00113 20000 17249.14 j I8.54 I g 80000 145.95 605.95 3.363 0.00126 0.I77 1 0.00107 20000 17227.71 1 I7.595 100000 138.20 598.20 2.761 0.00114 0.147 } 0.00099 20000 17207.89 16.795 g 120000 132.25 592.25 2.362 0.00100 0.122 j 0.00089 20000 [ 17190.05 16.241 4 _a 140000 127.50 587.50 2.080 0.00088 0.106 0.00080 20000 17174.13 15.836 { 0.00070 10000 17167.09 15.673 150000 125.50 585.50 1.970 0.00077 0.094 160000 123.80 ' 583.80 1.882 0.00072 0.089 0.00066 10000 17160.49 15.540 I80000 120.75 580.75 1.730 0.00067 0.086 0.00062 20000 17I48.I I ( l5.307 3 190000 119.25 ! 579.25 l.660 0.00058 0.079 0.00054 10000 I7I42.75 15.I97 i

CALCul_ATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHFCKED BY: P.D. Harizi REV. h4E2 DATE 2/28196 SHEET N OF MN Table 11 - Containment Pressure Available @ 1%/ Day Leakage Rate - 65"F Seawater Temperature Lochp Eq.15 Eq.16 Eq.17 Eq.18 Eq.19 Time Tp Tp PvP miaak m m AT Mt* Pc ga, (seconds) (*F) (*R) (psia) (Ibmisec) (thmisec) (sec) (Ihm) (Psia) 200000 118.00 1 578.00 1.601 0.00053 0.076 j 0.00049 10000 17137.85 15.105 210000 116.75 l 576.75 1.547 0.00048 i 0.074 i 0.00045 10000 17133.40 15.019 L220000 115.57 575.57 1.496 0.00043 0.071 O.00040 10000 17129.42 14.937 8 230000 114.50 574.50 1.451 0.00037 0.069 0.00035 10000 17125.% 14.865 3 240000 113.50 573.50 1.412 0.00031 } 0.067 j 0.00029 10000 17123.05 } 14.799 250000 112.50 572.50 1.372 0.00024 0.066 3 0.00023 10000 17120.76 14.735 260000 111.53 571.53 1.333 0.00015 0.064 j 0.00014 10000 I7119.36 14.6 % 270000 110.68 l 570.68 l.301 0.00000 0.062 1 0.00000 10000 1 17119.36 14.6 % 280000 110.00 " 570.00 1.276 0.00000 0.060 } 0.00000 10000 17119.36 14.6 % [ 290000 109.12 569.12 1.244 0.00000 0.059 j 0.00000 10000 17119.36 I4.6 % 300000 108.40 568.40 1.218 0.00000 0.058 0.00000 10000 17119.16 14.6 % 310000 107.75 567.75 1.195 0.00000 0.056 0.00000 10000 17119.36 14.696 320000 107.00 i 567.00 j l.170 0.00000 0.055 1 0.00000 10000 i 17119.36 l 14.6 % 330000 106.32 I 566.32 1.147 0.00000 0.054 O.00000 10000 l 17119.36 14.696 340000 105.75 } 565.75 1.128 0.00000 0.053 0.00000 10000 l 17119.36 14.6 % [ 350000 105.08 565.08 1.106 0.00000 j 0.052 1 0.00000 10000 l 17119.36 } 14.6 % 360000 104.40 564.40 1.083 0.00000 0.051 j 0.00000 10000 17119.36 14.6 % 380000 103.39 j 563.39 1.051 0.00000 0.049 j 0.00000 20000 17119.36 14.6%, g j 400000 102.25 562.25 1.017 0.00000 0.048 0.00000 20000 [ 17119.36 14.6 % [ 500000 97.50 557.50 0.881 0.00000 0.046 0.00000 100000 i 17119.36 14.6 % j ! 600000 94.00 554.00 1 0.791 0.00000 0.040 i 0.00000 100000 17119.36 14.696 [ 700000 91.38 551.38 O.730 0.00000 " 0.035 O.00000 100000 17119.36 14.696 i 800000 89.25 549.25 0.682 0.00000 0.033 0.00000 100000 I7119.36 14.696 j ! 900000 87.38 ! 547.38 0.644 1 0.00000 O.030 0.00000 100000 17119.36 14.696 l I 920000 87.00 i 547.00 0.636 O.00000 0.028 0.00000 I 20000 17119.36 I 14.6 % l 3

CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY: P.D. Harizi REV. ht62 DATE 2/28/96 SHEET U OF M 92 Table 12 - Containment Pressure Available @ 5%/ Day Leakage Rate-65*F Seawater Temperature Lookup Eq.15 Eq.16 Eq.17 Eq.18 Eq.19 Time Tp Tp PvP mieak G) m AT Mt* Pc gas (seconds) (*F) ("R) (psia) -(Ibm'sec) (Ibm'sec) (sec) (lbm) (psia) [ 128.75 588.75 2.150 j j 17316.12 j 16.049 l 100 128.75 j 588.75 2.150 0.00415 0.0 % l 0.00379 100 17315.74 l 16.049 200 131.75 591.75 } 2.331 0.00415 } 0.096 j 0.00379 100 17315.36 16.300 400 133.10 593.10 1 2.414 0.00447 i 0.104 l 0.00405 200 17314.55 16.414 600 133.70 } 593.70 2.453 0.00461 i 0.107 0.00416 200 17313.72 16.467 t [ 1000 135.90 i 595.90 2.598 0.00466 j 0.109 0.00421 400 17312.03 i 16.662 [ 2000 141.25 j 601.25 j 2.986 0.00487 0.115 j 0.00437 1000 17307.66 j 17.173 l 4000 148.33 608.33 3.571 0.00535 0.131 0.00473 2000 17298.20 17.917 [ 6000 153.65 613.65 4.069 0.00591 0.155 0.00512 2000 17287.% 18.532 ^ f 0.00536 { 10000 160.70 620.70 4.825 0.00630 0.175 4000 17266.52 19.436 14000 l 164.50 i 624.50 5.275 0.00677 0.205 0.00561 4000 17244.06 19.957 16000 165.65 625.65 5.421 0.00699 0.223 0.00572 2000 17232.63 20.119 20000 166.40 626.40 5.518 0.00706 O.229 0.00574 4000 17209.65 20.215 l 24000 166.20 626.20 5.492 0.00710 0.234 0.00576 4000 17186.63 20.164 30000 165.03 625.03 5.340 0.00708 0.233 0.00574 l 6000 17152.18 l 19.956 35000 163.63 ' 623.63 5.170 0.00699 } 0.227 O.00570 [ 5000 17123.68 i 19.729 [ 40000 162.00 622.00 4.972 0.00690 } 0.221 0.00565 1 5000 17095.43 } 19.469 60000 154.00 614.00 4.103 0.00678 0.213 0.00559 2P900 16983.65 } I8.319 80000 145.95 605.95 3.363 0.00617 0.179 0.00523 20000 16878.98 j 17.307 100000 138.20 598.20 2.761 0.00546 0.150 0.00475 L 20000 16784.02 j 16.449 _ 120000 132.25 592.25 j 2.362 0.00464 0.125 0.00413 20000 16701.49 1 15.847 140000 127.50 587.50 2.080 0.00387 0.109 0.00349 20000 16631.72 j 15.401 g 150000.j 125.50 } 585.50 } 1.970 0.00309 j 0.097 j 0.00282 10000 16603.53 j 15.223 j 160000 123.80 583.80 1.882 0.00270 i 0.092 i 0.00247 10000 16578.84 15.077 f 180000 120.75 580.75 1.730 0.00231 0.089 1 0.00212 20000 16536.40 14.823

CALCULATION SHEET PREPARED BY: P.Doody SOSfOn Ed SOM CALC.# M662 CHECKED BY: P.D. Harizi REV. YtEZ DATE 2/28/96 SHEET 45 OF $4 82 Ttble 12 - Containment Pressure Available (i) 5%IDay Leakage Rate-65*F Seawater Temperature Lookup Eq.15 Eq.16 Eq.17 Eq.18 Eq.19 Time Tp Tp PvP miaar c) m AT Mt

• Pc ga, (seconds)

(*F) (*R) (psia) (yg,,sec) (ibm'sec) (sec) (thm) (psia) 190000 119.25 579.25 1.660 0.00135 1 0.082 0.00125 10000 16523.92 14.709 200000 118.00 578.00 1.601 0.00043 i 0.079 0.00040 10000 16519.% 14.696 210000 116.75 576.75 l.547 0.00000 0.076 0.00000 10000 16519.96 14.6 % 220000 115.57 575.57 1.496 ' O.00000 0.073 0.00000 10000 165I9.% I4.696 3 230000 114.50 j 574.50 l 1.451 0.00000 0.070 0.00000 10000 16519.% 14.6 % 240000 113.50 573.50 1.412 i 0.00000 0.068 0.00000 10000 16519.% 14.696 [250000 I12.50 572.50 1.372 0.00000 0.066 0.00000 10000 16519.% } 14.6 % 260000 111.53 571.53 } 1.333 0.00000 0.064 0.00000 10000 16519.% j 14.6 % 270000 110.68 570.68 l 1.301 0.00000 0.062 0.00000 10000 16519.% 14.6 % 3 280000 110.00 570.00 I 1.276 0.00000 0.060 } 0.00000 10000 16519.% 14.6 % 290000 109.12 ! 569.12 1.244 0.00000 1 0.059 0.00000 10000 16519.% 14.6 % 300000 108.40 ! 568.40 1.218 0.00000 0.058 0.00000 10000 16519.% 14.6 % f 567.75 f 0.056 f 16519.% f ! 310000 107.75 1.195 0.00000 0.00000 10000 14.6 % 320000 107.00 567.00 l.170 0.00000 0.055 0.00000 10000 16519.% i 14.696 330000 106.32 566.32 1.147 0.00000 0.054 0.00000 10000 16519.% I 14.6 % f340000 ,i 1.128 0.00000 OI)S3 f 0.00000 105.75 565.75 10000 16519.% 14.6 % i 350000 105.08 565.08 1.106 0.00000 1 0.052 0.00000 10000 16519.% 14.6 % I 360000 104.40 564.40 1.083 0.00000 I 0.051 0.00000 10000 16519.% I4.6 % f380000 103.39 563.39 1.051 0.00000 0.049 _1 0.00000 20000 16519.% l 14.6 % 400000 102.25 562.25 1.017 0.00000 0.048 j 0.00000 20000 16519.% j I4.696 500000 97.50 557.50 0.831 j, 0.00000 0.046 j 0.00000 100000 16519.% j I4.696 600000 94.00 554.00 0.791 0.00000 0.040 0.00000 100000 16519.% I4.696 700000 91.38 551.38 0.730 0.00000 0.035 0.00000 100000 16519.% 14.696 800000 89.25 549.25 0.682 0.00000 1 0.033 i 0.00000 i 100000 16519.% j 14.696 900000 87.38 547.38 0.644 0.00000 0.030 0.00000 100000 16519.96 14.696 920000 87.00 i 547.00 0.636 0.00000 0.028 0.00000 20000 16519.96 14.696

_m CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY: P.D. Harizi REV. 'B4 62 DATE 2/28/96 SHEET 47 OF @4-82 Table 13 - Updated Analysis - Containraent Pressure for RIIR Pump NPSIIR at 1%/ Day Leakage Rate-65*F Seawater Temperature F14.5-10 Lookup Lookup Eq.19 Eq.21 Eq.22 Eq.23 Eq.24 P, Req'd for Time Time Tp p Psp Pc Pgas 11z IIst NPSilA NPSIIA of23 Alargin feet (secs) (hours) ('F) (thm(fY) (psia) (psia) (feet) (feet) l (feet) (feet) (psia) (feet) l'alues below Values below Values below Values below plottedon plottedon plottedon plottedon Figure 4 Figure 4 Figure 4 Figure 5 U U U U 100 I 0.028 128.8 61.56 2.150 16.049 32.51 12.5 2.63 42.4 7.76 19.4 3 [ 200 0.056 131.8 61.52 2.331 i 16.301 32.70 12.5 2.63 42.6 7.94 19.6 400 0.111 133.1 61.50 l 2..;14 16.415 32.78 12.5 2.63 42.7 8.02 19.7 600 0.167 133.7 61.48 j 2.453 16.469 32.82 12.5 2.63 } 42.7 j 8.06 19.7 1000 1 0.278 135.9 61.43 2.598 16.665 32.97 12.5 2.63 1 42.8 8.20 i 19.8 2000 j 0.556 141.3 61.35 2.986 17.179 33.31 12.5 2.63 j 43.2 8.58 j 20.2 4000 1.111 148.3 61.22 3.571 17.929 33.77 12.5 2.63 i 43.6 9.15 i 20.6 6000 1.667 153.7 61.11 4.069 18.550 34.13 12.5 2.63 44.0 9.64 i 21.0 I i 10000 l 2.778 160.7 60.98 4.825 19.470 34.58 12.5 2.63 44.5 10.39 I 21.5 ^ f 2.63 ) 5.275 44.7 10.83 21.7 20.006 34.83 12.5 14000 3.889 164.5 60.90 16000 4.444 165.7 60.88 5.421 20.176 34.90 12.5 2.63 44.8 10.97 21.8 20000 5.556 166.4 , 60.87 5.518 20.287 34.94 12.5 2.63, 44.8 i1.07 j 21.8 24000 6.667 166.2 60.87 5.492 20.253 34.92 12.5 ! 2.63 l 44.8 l 11.04 21.8 30000 8.333 165.0 60.89 5.340 20.067 34.83 12.5 j 2.63 j 44.7 j 10.89 21.7 3 35000 9.722 163.6 60.92 5.170 19.859 34.72 l 12.5 i 2.63 ! 44.6 l 10.72 21.6 10.53 [ 21.5 I 44.5 _ } 40000 11.111 162.0 60.% 4.972 [ 19.618 34.60 12.5 2.63 I 60000 16.667 154.0 61.10 4.103 1 18.541 34.03 12.5 2.63 I 43.9 j 9.67 j 20.9 i 80000 i 22.222 146.0 61.26 3.363 17.595 33.45 i 12.5 2.63 43.3 i 8.95 l 20.3 100000 27.778 138.2 61.40 j 2.761 16.795 32.91 [ 12.5 2.63 42.8 I 8.36 l 19.8 [ 120000, 33.333 132.3 j 61.51 j 2.362 16.241 j 32.49 [ 12.5 2.63 42.4 j 7.97 j 19.4 140000 38.889 127.5 61.59 2.080 15.836 32.16 12.5 2.63 42.0 7.70 i 19.0 150000 41.667 125.5 61.62 1.970 15.673 32.02 12.5 2.63 41.9 7.59 j 18.9 160000 44.444 123.8 G1.65 1.882 j 15.540 31.90 j 12.5 2.63 j 41.8 7.50 j 18.8 l 180000 50.000 120.8 61.70 1.730 l 15.307 31.69 i 12.5 2.63 i 41.6 7.36 l 18.6 l

CALCUl.ATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY. P.D. Harizi REV. E4 E2 DATE 2/28/96 SHEET 48 OF M b2 Table 13 - Updated Analysis - Containment Pressure for RIIR Pump NPSilR at 1%IDay Leakage Rate-65"F Seawater Temperature Fl4.5-10 Inokup Lookup Eq. IS Eq.21 Eq.22 Eq.23 Eq.24 P,Reqif for Time Time Tp p Ihp Pc Pgas 11: list NPSIM NPSIM of23 Afargin feet (secs) (hours) (*F) (Ibmff') (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet) 190000 52.778 119.3 I 61.71 1.660 15.197 31.59 12.5 2.63 41.5 l 7.29 18.5 [ 200000 55.556 118.0 61.73 1.601 15.105 31.50 12.5 2.63 41.4 } 7.23 18.4 [ 210000 58.333 116.8 61.75 1.547 15.019 31.42 [ 12.5 2.63 j 41.3 7.18 4 18.3 i 220000 6I.1II I15.6 61.77 1.496 14.937 31.33 12.5 2.63 41.2

7. I3 18.2 230000 63.889 II4.5 61.79 1.451 14.865 31.26 12.5 j 2.63 41.I 7.09 18.I 4

240000 { 66.667 113.5 61.80 1.412 14.799 31.19 12.5

j. 2.63 41.1 7.05 18.1 250000 1 69.444 112.5 61.82 1.372 14.735 31.13 12.5 2.63 41.0 7.01 18 0 1

! 260000 1 72.222 111.5 61.83 1.333 14.696 31.12 _ ! 12.5 2.63 41,0 6.97 18.0 l 270000 75.000 110.7 61.85 1.301 14.6 % 31.19 l 12.5 2 63 41.I 6.94 I8.1 [ 280000 77.778 I10.0 61.86 1.276 14.6 % 31.24 [ 12.5 2.63 41.1 6.92 18.1 l [ 290000 { 80.556 109.1 j 61.87 j l.244 14.696 31.31 _j. 12.5 2 63 41.2 6.89 18.2 l 300000 83.333 105.4

61.88 1.218 14.696 31.36 12.5 2.63 41.2 6.86 18.2

[ 310000 86.111 107.8 j 61.89 1.195 14.6 % 31.41 12.5 2.63 41.3 6.84 18.3 320000 j 88.889 '^7 0 61.90 j l.170 14.6 % 3:.47 12.5 2.63 l 41.3 6.81 { 18.3 330000 91.667 Q3 61.91 j 1.I47 I4.6 % 31.52 12.5 2.63 I 41.4 6.79 18.4 i ,i 340000 94.444 105.8 61.91 j l.128 14.696 31.56 12.5 2.63 _j 41.4 6.77 18.4 l 350000 97.222 105.I 61.92 1.106 14.6 % 31.61 12.5 2.63 ! 41.5 6.75 18.5 l 360000 100.000 104.4 61.93 1.083 14.6 % 31.66 12.5 2.63 } 41.5 6.73 18.5 380000 { 105.556 103.4 61.94 1.051 14.6 % 31.72 12.5 [ 2.63 41.6 j 6.70 ,{ 18.6 400000 111.111 102.3 61.95 1.017 14.6 % 31.80 12.5 2.63 41.7 6.67 18.7 ] 41.9 6.54 p1 f500000 138.889 97.5 62.02 0.881 14.696 32.08 12.5 2.63 [ 600000 166.667 94.0 62.06 ' O.791 14.696 32.26 12.5 { 2.63 42.I j 6.45 19.I 700000 194.444 91.4 i 62.09 0.730 14.696 32.39 12.5 2.63 42.3 } 6.39 19.3 3 800000 1 222.222 89.3 i 62.11 0.682 14.696 32.49 12.5 2.63 42.4 l 6.35 l 19.4 l ^ 900000 I 250.000 87.4 62.13 0.644 14.696 32.57 12.5 2.63 42.4 6.31 19.4 920000 i 255.556 87.0 62.14 0.636 [ 14.696 32.58 12.5 2.63 42.5 6.30 19.5 t

cal _Ct)LATION SHEET PREPARED BY: P.Dood/ 2 Soston EdlSOG CALC.# M662 CHECKED BY; P.D. Harizi REV. hEl DATE 2128/96 SHEET 4-9 OF M 92 Table 14 - Updated Analysis - Containment Pressure for Core Spray Pump NPSIIR at 1%IDr.y Leakage Rate-65'F Seawater Temperature F14.5-10 Lookup Lookup Eq.19 Eq.21 l l Eq 22 Eq.23 Eq.24 P, Req'd for Time Time Tp p lhp Pc Pgas llz list NPSilil NPSIIsl of29 Afargin feet (secs) Grours) (*F) (Thm]Y) (psia) (psia) (feetl (feet) (feet) (fes *? tpsia) (feet) l'alues below l'alues below ? l'alues below I'alues below plottedon plottedon plottedon plottedon Figure 4 Figure 4 Figure 4 Figure 5 0 0 } U U 100 0.028 128.8 61.56 2.150 16.049 32.51 [ 12.5 2.40 ! 42.6 10.23 [ 13.6 ^ ^ 200 0.056 131.8 61.52 2.331 16.301 32.70 [ 12.5 [ 2.40 42.8 10.41 [ 13.8 400 0.111 133.1 61.50 2.414 16.415 32.78 12.5 [ 2.40, 42.9 10.49 I 13.9 600 i 0.167 133.7 61.48 i 2.453 16.469 32.82 12.5 2.40 42.9 10.52 { 13.9 1000 I 0.278 135.9 61.43 2.598 16.665 32.97 12.5 2.40 43.1 10.66 i 14.1 [ 2000 i 0.556 141.3 61.35 2.986 17.179 33.31 12.5 2.40 43.4 l 11.04 14.4 i 4000 l.111 148.3 61.22 3.571 17.929 33.77 12.5 2.40 43.9 11.61 14.9 c [ 6000 1.667 153.7 61.I1 4.069 18.550 34.13 12.5 2.40 44.2 j 12.09 I5.2 10000 2.778 160.7 60.98 4.825 19.470 34.58 12.5 ' 2.40 44.7 l 12.83 _15.7 j 14000 3.889 164.5 60.90 5.275 20.006 34.83 12.5 2.40 44.9 13.27 15.9 l 16000 4.444 165.7 60.88 5.421 20.176 34.90 12.5 2.40 45.0 13.41 } 16.0 g 20000 5.556 166.4 60.87 5.518 20.287 34.94 12.5 2.40 45.0 13.51 16.0 24000 6.667 166.2 60.87 5.492 20.253 34.92 12.5 2.40 45.0 13.48 16.0 g 30000 8.333 165.0 60.89 5.340 20.067 34.83 12.5 [ 2.40 i 44.9 13.33 15.9 35000 9.722 163.6 60.92 5.170 19.859 34.72 12.5 2.40 44.8 13.17 15.8 [ 40000 11.I11 162.0 60.96 4.972 19.6I8 34 60 [ 12.5 2.40 44.7 12.97 15.7 [ 60000 l 16.667 154.0 61.10 4.103 18.541 34.03 ! 12.5 2.40 l 44.1 12.12 l 15.1 80000 ' 22.222 146.0 61.26 3.363 17.595 33.45 i 12.5 2.40 43.6 11.40 14.6 ,I 14.0 100000 27.778 138.2 61.40 2.761 16.795 32.M 12.5 2.40 43.0 10.82 120000 33.333 132.3, 61.51 j 2.362 16.241 32.49 12.5 ( 2.40 j 42.6 10.44 13.6 i 140000 38.889 127.5 ( 61.59 _j 2.080 15.836 32.16 ~ 12.5 { 2.40 ! 42.3 10.16 13.3 f 42.1 } 10.06 { 13.1 [ 150000 41.667 125.5 ( 61.62 j 1.970 15.673 , 32.02 12.5 j 2.40 ! 160000 ! 44.444 123.8 j_ 61.65 i 1.882 15.540 i 31.90 12.5 1 2.40 ! 42.0 l 9.97 13.0

CALCULATION SHEET PREPARED BY. P.Doody & Boston Edison CALC.# M6G2 CHECKED BY: P.D. Harizi REV. h62 DATE 2128/96 SHEET 60 OF 7N 82 Table 14 - Updated Analysis - Contain:nent Pressure for Core Spray Pump NPSIIR at 1%/ Day Leakage Rate-65 F Seawater Temperature F14.5-10 Lookup Lookup Eq.19 Eq.21 Eq.22 Eq.23 Ea.24 P, Reg'd for Time Time Tp p lhp Pc Pgas llz list NPSilA NPSilA of29 Margin feet (secs) (hours) (*F) (ibm]Y) (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet) 180000 50.000 120.8 61.70 i 1.730 15.307 31.69 12.5 2.40 41.8 9.83 12.8 190000 52.778 119.3 61.71 I 1.660 15.197 31.59 12.5 2.40 41.7 9.76 12.7 200003 1 55.556 118.0 61.73 1.601 j 15.105 j 31.50 12.5 2.40 { 41.6 9.70 12.6 [ 210000 58.333 116.8 61.75 1.547 15.019 31.42 12.5 2.40 41.5 9.65 12.5 f220000 61.III I15.6 61.77 1.496 14.937 31.33 12.5 2.40 41.4 9.60 { 12.4 230000 63.889 114.5 61.79 1.451 14.865 31.26 ' 12.5 2.40 41.4 9.56 12.4 l l[ 240000 66.667 113.5 61.80 1.412 14.799 31.19 12.5 2.40 41.3 9.52 12.3 [ 250000 i 69.444 112.5 61.82 1.372 14.735 31.13 12.5 l 2.40 1 41.2 9.49 12.2 i 260000 72.222 111.5 61.83 1.333 14.6 % 31.12 i 12.5 2.40 { 41.2 9.45 12.2 [ 270000 75.000 110.7 ' 61.85 1.301 14.6 % 31.19 12.5 2.40 1 41.3 9.42 12.3 3 l 280000 77.778 110.0 61.86 1.276 14.6 % 31.24 12.5 2.40 1 41.3 9.39 12.3 l 290000 80.556 109.1 61.87 1.244 14.696 31.31 12.5 2.40 l 41.4 9.36 1 12.4 [ 300000 83.333 108.4 61.88 1.218 14.696 31.36 12.5 I 2.40 I 41.5 9.34 { 12.5 310000 86.111 107.8 61.89 1.195 14.6 % 31.41 1 12.5 2.40 41.5 9.32 12.5 r I 320000 88.889 107.0 61.90 1.170 14.696 31.47 12.5 2.40 41.6 9.29 12.6 330000 - 91.667 106.3 61.91 1.147 14.6 % 31.52 12.5 2.40 { 41.6 i 9.27 12.6 [ 340000 94.444 105.8 61.91 1.128 [ 14.6 % 31.56 12.5 2.40 41.7 i 9.25 i 12.7 l 350000 97.222 105.I 61.92 1.106 I4.6 % 31.61 12.5 2.40 41.7 } 9.23 12.7 3 360000 100.000 104.4 61.93 1.083 14.696 31.66 i 12.5 i 2.40 I 41.8 i 9.21 i 12.8 380000 105.556 103.4 61.94 1.051 14.696 31.72 12.5 2.40 41.8 9.18 12.8 400000 } 111.111 102.3 61.95 1.017 14.696 31.80 12.5 2.40 _, 41.9 9.15 12.9 500000 138.889 97.5 62.02 0 881 14.696 32.08 12.5 {, 2.40 j 42.2 } 9.02 { 13.2 600000 166.667 94.0 62.06 0.791 14.696 32.26 12.5 ' 2.40 42.4 j 8.94 i 13.4 700000 194.444 91.4 62.09 0.730 14.696 32.39 12.5 2.40 42.5 l 8.88 13.5 800000 222.222 89.3 62.11 0.682 14.696 I~ 32.49 12.5 2.40 I 42.6 I 8.83 [ 13.6 i 900000 250.000 87.4 62.I3 0.644 14.696 Y 32.57 12.5 2.40 $ 42.7 8.80 I I3.7 l 920000 ' 255.556 87.0 62.14 ! 0.636 l 14.696 i 32.58 ! 12.5 1 2.40 ! 42.7 i 8.79 l 13.7 i

_~ CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY; P.D. Harizi REV. ME2 DATE 2/28/96 SHEET f/ OF M b2 Table 15 - Updated Analysis - Containment Pressure for RIIR Pump NPSIIR at 5%/ Day Leakage Rate-65"F Seawater Temperature F14.5-10 lookup Lookup Eq !9 Eq.2i Eq.22 Eq.23 Eq 24 Pa. Reg'd for Time Time Tp p Pvp Pc P as IIz IIst NPSibi NPSILI of23 Afargin R feet (secs) (hours) (*F) (thm'ff) (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet) l'alues below I'alues below I'alues below I'alues below plotted on plottedon plottedon plottedon Figure 4 Figure 4 Figure 4 Figure 5 U U U U t 100 0.028 128.8 61.56 l 2.150 16.049 32.51 12.5 2.63 42.4 l 7.76 19.4 l l 200 i 0.056 131.8 61.52 2.331 16.300 32.70 12.5 2.63 42.6 ' 7.94 19.6 T "I [ 400 ! 0.111 133.1 61.50 2.414 16.414 32.78 12.5 2.63 42.7 8.02 19.7 l 600 { 0.167 133.7 61.48 j 2.453 [ 16.467 g 32.82 12.5 2.63 42.7 8.06 { 19.7 1000 l 0.?78 135.9 61.43 2.598 16.662 32.97 12.5 i 2.63 42.8 } 8.20 1, 19.8 3 [ } 0.556 141.3 61.35 2.986 17.173 33.30 12.5 i 2.63 { 43.2 j 8.53 20.2 2000 4 4000 1.1I i 148.3 61.22 3.57I I7.9I7 33.75 12.5 2.63 43.6

9. I5 20.6 6000 1.667 153.7 61.11 4.069 18.532 34.08 12.5 2.63 44.0 9.64 I

21.0 p '[ 10000 2.778 160.7 60.98 4.825 19.436 34.50 12.5 [ 2.63 j 44.4 j 10.39 { 21.4 14000 3.889 164.5 60.90 5.275 19.957 34.71 12.5 2.63 l 44.6 10.83 21.6 i 16000 4.444 165.7 60.88 5.421 20.119 34.77 I 12.5 2.63 ,I __ __44.6 10.97 21.6 20000 5.556 166.4 60.87 5.518 [ 20.215 34.77 12.5 {,, 2.63 44.6 I I.07 { 21.6 4 24000 6.667 166.2 60.87 5.492 20.164 34.71 12.5 2.63 44.6 11.04 1 21.6 30000 8.333 165.0 60.89 5.340 19.956 34.56 12.5 2.63 44.4 10.89 l 21.4 f 19.729 ^ 34.41 12.5 2.63 44.3 I 10.72 21.3 35000 9.722 163.6 60.92 5.170 40000 11.111 162.0 60.96 4.972 19.469 34.24 12.5 2.63 44.1 10.53 21.1 i 60000 { 16.667 154.0 61.10 4.103 [ 18.319 33.51 12.5 [ 2.63 { 43.4 I 9.67 i 20.4 l 80000 22.222 146.0 61.26 3.363 17.307 32.77 12.5 2.63 42.6 j 8.95 [ 19.6 J 100000, 27.778 138.2 61.40 2.761 16.449 32.10 12.5 2.63 42.0 { 8.36 I 19.0 j g 120000 33.333 132.3 61.5 k 2.362 15.847 31.57 12.5 2.63 j 41.4 7.97 l 18.4 l 140000 38.889 127.5 l 61.59 2.080 15.401 31.15 12.5 2.63 j 41.0 7.70 18.0 j 150000 1 41.667 125.5 i 61.62 1.970 i 15.223 30.97 12.5 2.63 i 40.8 l 7.59 17.8 l ! 160000 j 44.444 i 123.8 ! 61.65 1.882 15.077 30.82 ' 12.5 ! 2.63 ! 40.7 7.50 l 17.7 l

r CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY: P.D. Harizi REV. ME2 DATE 2!28/96 SHEET 62 OF M b2 Table 15 - Updated Analysis - Containment Pressure for RIIR Pump NPSIIR at 5%/ Day Leakage Rate-65'F Seawater Temperature F14.5-10 L.ookup Lookup Eq.19 Eq.21 Eq.22 Eq.23 Eq.24 P, Req'd for P as llz list NPSilA NPSilI of23 Afargin Time Time Tp p Pvp Pc R feet (secs) Qtours) (*F) (thm(fY) (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet) 180000 50.000 120.8 61.70 1.730 14.823 1 30.56 12.5 2.63 40.4 7.36 17.4 190000 52.778 119.3 61.71 1.660 14.709 30.45 12.5 2.63 40.3 7.29 17.3 3 ' 12.5 [ 2.63 40.4 7.23 17.4 j 200000 55.556 118.0 61.73 J 1.601 I4.696 30.55 210000 58.333 116.8 61.75 1.547 14.696 30.66 12.5 2.63 40.5 7.18 17.5 [ 220000 61.111 115.6 61.77 1.4 % 14.6 % 30.77 12.5 2.63 I 40.6 7.13 { 17.6 3 [ 230000 63.889 114.5 61.79 1.451 14.696 30.87 12.5 2.63 40.7 l 7.09 17.7 i 240000 66.667 113.5 61.80 1.412 14.696 30.95 12.5 2.63 40.8 } 7.05 17.8 f250000 f 69.444 f 112.5 61.82 1.372 14.696 31.04 12.5 2.63 40.9 7.01 17.9 260000 72.222 111.5 61.83 1.333 14.6 % 31.12 12.5 2.63 l 41.0 6.97 18.0 270000 75.000 110.7 61.85 1.301 14.6 % 31.19 12.5 2.63 { 41.1 6.94 18.1 g 280000 77.778 110.0 61.86 1.276 14.6 % 31.24 12.5 2.63 41.1 j 6.92 { 18.1 i 290000 80.556 109.1 61.87 1.244 14.6 % ' 31.31 12.5 2.63 41.2 i 6.89 18.2 { 41.2 } 6.86 I 18.2 I 300000 83.333 108.4 61.88 1.218 14.6 % 31.36 12.5 2.63 ! 310000 86.111 107.8 fl 89 1.195 14.696 31.41 12.5 2.63 41.3 6.84 18.3 [ 320000 88.889 { 107.0 c: 90 1.170 14.6 % 31.47 12.5 [ 2.63 41.3 6.81 18.3 f 12.5 [ 2.63 41.4 6.79 18.4 l [ 330000 91.667 106.3 61.91 1.147 14.6 % 31.52 1 340000 94.444 105.8 61.91 1.128 14.6 % 31.56 l 12.5 2.63 41.4 6.77 18.4 i 3 f I 350000 97.222 105.I 61.92 1.106 14.696 31.61 j 12.5 2.63 41.5 6.75 I8.5 ! 360000 100.000 104.4 61.93 1.083 14.696 31.66 12.5

2.63 l 41.5 6.73 i

18.5 i 380000 105.556 103.4 61.94 1.051 1 14.6 % 31.72 12.5 2.63 41.6 6.70 l 18.6 [ 400000, 1I1.111 102.3 61.95 1.017 14.6 % 31.80 12.5 2.63 41.7 I 6.67 18.7 4 500000 138.889 97.5 i 62.02 0.881 14.696 i 32.08 12.5 l 2.63 j 41.9 6.54 l 18.9 l } 62.06 12.5 ] 2 63 { l9. I ,] 0.791 14.6 % 32.26 2.63 42.I J 6.45 600000 166.667 94.0 700000 194.444 91.4 i 62.09 0.730 14.6 % 32.39 12.5 i 42.3 i 6.39 l 19.3 i I 800000 222.222 89.3 i 62.11 0.682 14.696 32.49 12.5 2.63 42.4 6.35 19.4 l 900000, 250.000 87.4 62.13 0.644 14.6 % 32.57 12.5 2.63 42.4 6.31 19.4 920000 i 255.556 87.0 62.14 ! 0.636 i 14.696 32.58 12.5 ! 2.63 3 42.5 i 6.30 19.5 =

~... CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY:,P.D. Harizi REV. Et El DATE 2/28/96 SHEET 88 OF M B2 i Table 16 - Updated Analysis - Containment Pressure for Core Spray Pump NPSIIR at 5%IDay Leakage Rate-65*F Ses ster Temperature F14.5-10 Lookup Lookup Eq.19 Eq.21 Eq.22 4. 23 Eq.24 P, Reg'd for Time Time Tp p Pvp Pc Pgas llz list NPSilA NPSilA of29 Afargin feet (secs) (hours) (*F) (ibmflY) (psia) (psia) (feet) (feet) { feet) (feet) (psia) (feet) l'a!ues below l'alues below l'alues below I'alues below plottedon plottedon plottedon plottedon Figure 4 Figure 4 Figure 4 Figure 5 8 U U U f 100 ^ 0.028 128.8 61.56 2.150 16.049 32.51 12.5 2.40 42.6 10.23 13.6 j l 200 0.056 131.8 61.52 2.331 16.300 32.70 12.5 2.40 ' 42.8 10.41 13.8 400 0.1I I 133.I 61.50 2.414 16.414 32.78 12.5 2.40 42.9 j 10.49 13.9 l g _ 600 0.167 133.7 61.48 i 2.453 16.467 32.82 12.5 2.40 42.9 10.52 13.9 1000 0.278 y 135.9 j 61.43 2.598 16.662 32.97 12.5 2.40 43.1 10.66 14.1 2000 0.556 141.3 j 61.35 2.986 17.173 33.30 12.5 2.40 } 43.4 11.04 14.4 4000 1.111 148.3 l 61.22 3.571 17.917 33.75 12.5 2.40 1 43.8 l 11.61 14.8 j 6000 1.667 153.7 j 61.11 4.069 18.532 34.08 12.5 2.40 j 44.2 j 12.09 15.2 g 10000 2.778 160.7 60.98 4.825 19.436 34.50 12.5 2.40 } 44.6 12.83 } 15.6 14000 3.889 164.5 60.90 5.275 19.957 34.71 12.5 2.40 44.8 13.27 15.8 [ 16000 4.444 165.7 60.88 5.42I 20.119 34.77 12.5 2.40 44.9 13.41 I 15.9 j { 2U000 l 5.556 166.4 60.87 l 5.518 20.215 34.77 12.5 ! 2.40 44.9 13.51 15.9 l I 24000 6.667 166.2 60.87 5.492 20.164 34.71 12.5 i 2.40 44.8 13.48 15.8 j 30000 8.333 165.0 60.89 5.340 19.956 34.56 ! 12.5 1 2.40 44.7 13.33 15.7 35000 9 722 163.6 60.92 ! 5.170 19.729 34.41 12.5 2.40 1 44.5 } 13.17 15.5 40000 11.1Ii 162.0 , 60.% 4.972 19.469 34.24 12.5 2.40 j 44.3 } 12.97 15.3 60000 j 16.667 154.0 j 61.10 4.103 18.319 33.51 12.5 2.40 j 43.6 j 12.12 14.6 i 80000 22.222 146.0 61.26 3.363 17.307 32.77 12.5 2.40 42.9 11.40 13.9 l i 100000 27.778 138.2 61.40 2.761 16.449 32.10 12.5 2.40 42.2 10.82 13.2 l 120000 { 33.333 132.3 j 61.51 2.362 j, 15.847 31.57 12.5 { 2.40 [ 41.7 10.44 j 12.7 j 140000 1 38.889 127.5 61.59 2.080 15.401 j 31.15 12.5 2.40 1 41.2 j 10.16 {,, 12.2 150000 l 41.667 125.5 61.62 1.970 15.223 30.97 ' 12.5 2.40 i 41.1 10.06 12.I 160000 i 44.444 123.8 i 61.65 1.882 15.077 30.82 12.5 i 2.40 i 40.9 i 9.97 I I 1.9

t CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY: P.D. Harizi REV. IM.E1 DATE 2128/96 SHEET ff OF B4 82 TableJ6 - Updated Analysis - Containment Pressure for Core Spray Pump NFSIIR st 5%/ Day Lenkage Rate-65'F Seawater Temperature F14.5-10 Lookup Lookup Eq.19 Eq. 21 Eq.22 Eq.23 Eq.24 P, Reg'd for Ti:n* Time Tp p Ihp Pc Pgas Hz Hsl NPSHil NPSHil of29 Margin feet (secs) (hours) (*F) (ibmfY) (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet) 180000 50.000 120.8 61.70 1.730 14.823 30.56 12.5 2.40 40.7 1 9.83 11.7 190000 52,778 119.3 61.71 1.660 14.709 30.45 12.5 2.40 40.5 9.76 I 1.5 l l 200000 j 55.556 118.0 i 61.73 1.601 14.696 30.55 i 12.5 [ 2.40 40.6 9.70 11.6 ^ 4 210000 58.333 116.8 i 61.75 !.547 I4.6 % _,[ 30.66 12.5 2.40 40.8 i 9.65 11.8 220000 61.111 115.6 61.77 1.496 14.6 % 30.77 12.5 2.40 } 40.9 j 9.60 11.9 230000 ! 63.889 114.5 61.79 1.451 14.6 % 30.87 12.5 2.40 i 41.0 l 9.56 i 12.0 240000 I 66.667 113.5 61.80 1.412 14.6 % ] 30.95 } 9.52 j 12.1 12.5 2.40 41.I [250000 j 69.444 112.5 61.82 1.372 14.6 % J 31.04 12.5 2.40 41.1 j 9.49 j 12.1 { 260000 72.222 111.5 61.83 1.333 14.6 % ! 31.12 12.5 2.40 41.2 l 9.45 1 12.2 [ 270000 75.000 110.7 61.85 1.301 14.696 31.19 12.5 2.40, 41.3 } 9.42 j 12.3 280000 77.778 110.0 61.86 1.276 14.6 % 31.24 12.5 2.40 41.3 9.39 12.3 290000 80.556 109.1 61.87 1.244 14.696 31.31 12.5 2.40 41.4 9.36 i 12.4 300000 83.333 108.4 61.88 l 1.218 14.696 31.36 12.5 , 2.40 41.5 9.34 [ 12.5 310000 86.111 107.8 61.89 1.195 14.6 % 31.41 12.5 2.40 l 41.5 9.32 12.5 .__ 1.90 1.170 14.6 % 31.47 12.5 2.40 J 41.6 9.29 12.6 320000 88.889 107.0 6 [ 330000 91.667 106.3 61.91 1.I47 14.6 6 31.52 12.5 2.40 j 41.6 9.27 12.6 340000 94.444 105.8 61.91 1.l?8 14.696 31.56 12.5 2.40 41.7 9.25 12.7 3 [ 350000 97.222 105.1 61.92 1.106 14.696 1 31.61 12.5 2.40 41.7 9.23 12.7 l 360000 ! 100.000 104.4 61.93 !.083 14.696 31.66 ; 12.5 i 2.40 l 41.8 9.21 l 12.8 i i 380000 105.556 103.4 61.94 1.05! 14.696 31.72 12.5 2.40 41.8 9.18 12.8 l [ 400000 111.111 102.3 61.95 1.017 14.696 31.80 12.5 2.40 41.9 9.15 12.9 l 500000 { 138.889 97.5 62.02 0.881 14.6 % 32.08 12.5 2.40 i 42.2 9.02 j 13.2 j 600000 166.667 94.0 62.06 0.791 14.6 % 32.26 12.5 2.40 ! 42.4 8.94 13.4 700000 194.444 91.4 62.09 1 0.730 14.696 32.39 l 12.5 1 2.40 I 42.5 8.88 13.5 f 62.11 j 800000 222.222 89.3 0.682 14.696 32.49 12.5 2.40 42.6 8.83 13.6 900000 250.000 87.4 62.13 0.644 14.696 32.57 12.5 2.40 42.7 i 8.80 13.7 l 920000 l 255.556 87.0 62.14 0.636 l 14.6 % i 32.58 i 12.5 i 2.40 i 42.7 i 8.79 i 13.7

.. _ ~. _. _ _ _ _. _ _.. _... _ CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY: P.D. Harizi i REV. IM.E7-DATE 2129/96 SHEET 6 OF $ 92 22 170 l l lll l I ! lll I l ! I l ! !.! l l l llll !l I i i +r i 1.... r + -+_ 4._,i.,... 9._ 9.{.. +_4 I a ._9_. p 3_. ! = ! ;;l Suppression Pool r i - / Tempertture 20 l 160 { 1 7 1 *, t i .. f _..-.4._+... _ L_ _4 _.___.9.._.. 1.j _.. [.] Containment Pressure f I 3 150 with Design Basis

j

_..___..t__._.._,._ .__ _. { _ l-- f, g a '. _.l_. 4. i.!. ! !

i. 41mkage @ 1 %/ Day e

Mll E } E i t g 16 l .l Margin ;. ,i l 140 j i l l 1 i { j i s. Ml ! I.4.) 4...' . 4...d...I .L. .. _..d._4 i e .. I I. 4_._,_,_ 4 _ i _. +_f 9 f. .1. pr. I j .__._.4...__ [ j !! #i i !l! I i i i i. E l ! !!! 8 i IIII{ i E 34 130 ei I4 s.,,,, i 4 ,kl-l- l, l l l i i ll, l g _;_j_g! ! .E l j lh I I ..q.4yg! ' ~ p -.p.m' ' l 8 _ a... p g j ,,,i i 1 i o u 12 Containment Pressure ll with Leakage @ $ %/ Day ----- 120 3 o b iii it / } l ili llll g i 1 i

• i.

for CS Pump NPSHR\\ ! :d ! 'i l a .l l 1 ! ! !il 7 ""{ t'~~'~ Q j[ "~I~f; Qg{

• ~~' - l 3-i m.

~ 10 ~ ' \\ l. I; I n. i i i i l +t it m 110 Containment Pressure for l l-l l,ji !l I 1 I;{'! ---k-f-M*~O

-+tTf#

RHR Pump NPSHR\\-h-rYt ! l ! k * -;- " I~#- ' ~ ' M' ! iil M l 8 = 100 _._.{. h' {! ! ! y! .. L.g i i, _ q .{. J., .-{.j. { .. p. ; _ {

7 j.j

' i I !!I i l! Note: Based on 65'F Seawater Temperature i! l !i 6 90 0.0 0.1 1.0 10.0 100.0 1000.0 Time After Accident (hours) Figure 14.5-10 MPSH Availability for RHR and Core Spray System After a DBA-LOCA Figure 4

CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.8 M662 CHECKED BY: P.D. Harizi

l. 62 DATE 2129f96 REV.

M SHEET M OF M U-25 1 J' l' 1' 1' {' A.__ }[__j _. d. [ _._..[__.k.j_.I,_ iL_1_L}_. } i i i __l'___+t__.,i_ ! Ii __ __ l.__l._[.q._ 44' L' ___.. _j _}' a 4. y Ilit .-. j. .o I +_ 4_ } 11 _L 1.1 i {_Ijl!. __ + _. _f_.._j.h. _.. b _ _.j _}_.d [.. _ h. L ! I }] } ____. h_.j_. Rbl n p Margin ---r -4 b _.L @ 1%/ day Izakage -- -~ I J dl}. I i i +i i. t _.-{. RHR Pump Margin _._L i d Ii' Al _ _I_. L .a - .I [ __L_.. L _i._L _l[j j_I_ bill. _ __L L I t_1 Lit l _L...{.i.I __ - s _. _.! 3 l' I !.l !j i a ..-s_7 4 .+ i @ SWdaY eaka8e _.4_l_.'.A.i. J' L _.._.__ _. .l i L +_._.!. _._ _ __4 _m 4_L' +I.t. !.' .i___j' __L _L'.I_p! ! l i l.__l_Lij.1d _ _.. d _.j..-_L j j J ! 3

• I i i ____._1__ l CS Pump Margin @ _{_L

.} i I IWday Leakage iI 15 uj 1 _i i [_I'___j.j. i X._..a 4._._.h_.p jj..h..___j _ E.4_j j i !, h.)4) ___ [__ f__[ [ !: i i t::. l' __1_i. =t !i i

• i q.

}.___o _.a a _L1 ii -h __'.j __[_1. Li _. _. _ _._ j _.j_f p j ]. 4._ _ ;- J CS Pump Margin fJ I- _.__L.i_ _L 1.q y---t-J 9 _. _. _. _ _ +... !_ !_e J! ..[__!._}_i.4[l!.i .- __ _ [ [ {._j.j Ip j_ h, - @ 5%/dayleakage- !- - 1J h-f --~ --, - 'i-- !! +- I Q lr ! i iil i 4 ., iii, i sisi w m 10 ___.f._j_, d.j ! ; } . j _,_j_l l 4].l. __ _ 4 ._ _{._ [ 1 Z f _;_f $.[.[, t Ill !t I--- 14' ,I.,!,i..._,i.m. _ _ _. _4' _,!_i..-.i t,!,! i _.- ,!.T t - i-- --- - l I. - ---l -- - --l 1. t.5 it I ,y i ! !! i fi ll i _. q _..,...__.p 7.}. ; j-p..._ _ j

5.;

. _ _ w._i_>!_Llit I . _ -9_ j _p. g+ 3 " I __,_.j..___.__._7,. o t99 i i 1. -- r ~'-[~~M i~ - ' ~'Y~ ~ I ~F I" "s i i i. t j i, i ~'~-- j -~

• t'I~ ~~ h' '

~~ -'"- N: ' i ! ,;i i I"- '~ F' I I 5 l l )_ l.g f.7 _ } . i 1 -. 7 [ l-l4,. 4, ! _ b 4, l-i a_l_i_. $1l I

_.u.[. ln l

}.-.-4,_4, Note: Based on Case (B) Suppression Pool i f. .t'.- ij; g i i, Temperature Curve Figure 14.5-7 [? - F,_ L - u *.-l.4 F, .-- t. - l-{ -1 i-if i i ,i ,,i- + r;4 i,:!+ - - !. A -- i. Based on 65'F Seawater Temperature ii -- - ; - - i i i r: iii 1 ii i i i i_ i i iiii i , 4 si 0 ,iiii} af 0.1 1.0 10.0 100.0 1000.0 Time After Accident (hours) Figure 14 5-13 NPSH Margin for RHR and Core Spray System After a DBA-LOCA Figure 5

m' n,,. t. CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M562 CHECKED BY: P.D. Harizi REV. ME2 DATE 2/28/96 SHEET 57 OF EiB2 Table 17 - Containment Pressure Available @ 1*/./ Day Leakage Rate - 75 F Seawater Temperature Lookup Eq.15 Eq.16 Eq.17 Eq.18 Eq.19 AT Mt* Pc Time Tp Tp PvP micak 0) m8as (seconds) ('F) ( R) (psia) -(Ibds4 (IbWsec) (sec) (Ibm) . (psia) 124.70 584.70 1.929 17316.12 15.732 p '[ 101.84 124.70 1 584.70 1.929 0.00074 0.087 0.00068 101.84-17316.05 15.732 201.84 _126.60

_ 586.60 2.030 0.00074 0.087 0.00068 100.00 1

17315.98 l 15.877 i 401.84 128.90 583.90 2.159 0.00078 0.091 0.00072 200.00 17315.84 } 16.061 603.62 135.60 595.60 2.578 0.00083 1 0.097 0.00076 201.78 17315.68 16.639 1003.62 ! 143.80 603.80 3.184 0.00097 0.114 0.00087 400.00 17315.33 17.438 2005.66 i 154.20 614.20 4.123 0.00111 0.139 0.00098 1002.04 17314.35 18.621 2786.91 159.10 619.10 4.644 0.00127 0.177 0.00108 781.25 17313.51 19.257 3568.16 162.70 622.70 5.057 0.00134 0.198 0.00112 781.25 17312.64 19.754 4349.41 165.40 625.40 5.388 0.00138 0.214 0.00il4 781.25 17311.75 1 20.148 5130.66 167.40 627.40 5.648 0.00141 0.227 0.00115 781.25 17310.85 20.455 5911.91 169.10 629.10 5.870 0.00144 0.237 0.00116 781.25 17309.94 20.716 g 6693.16 170.70 630.70 l 6.093 0.00146 0.246 0.00117 781.25 17309.03 l 20.976 10447.91 174.80 634.80 6.690 u.00148 0.255 0.00118 3754.75 17304.61 21.666 19633.66 177.60 ' 637.60 7.126 0.00152 0.278 0.00119 9185.75 17293.69 22.158 3 28998.41 176.70 636.70 6.981 0.00155 0.295 0.00120 9364.75 17282.50 21.983 38913.91 174.10 634.10 6.586 0.00154 0.289 0.00119 9915.50 17270.67 21.516 49139.91 170.40 l 630.40 6.051 0.00151 0.274 0.00119 10226.00 17258.55 20.884 [ 59757.16 166.40 i 626.40 5.518 0.00147 } 0.254 0.00117 10617.25 17246.11 20.246 [ 70590.16 162.60 } 622.60 5.045 0.00142 j 0.233 0.00115 10833.00 17233.62 19.673 I I643.66 159.20 619.20 j 4.655 0.00137 l 0.215 0.00113 11053.50 17221.10 19.193 J f 0.199 92860.66 156.20 616.20 1 4.332 0.00133 0.001II I1217.00 I7208.66 I8.788 , 104289.91 153.50 1 613.50 l 4.054 1 0.00129 i 0.186 0.00109 11429.25 171 %.25 18.437 l 116030.91 150.90 610.90 3.802 0.00125 0.175 0.00106 11741.00 17183.78 18.114 [ 127890.66 148.40 608.40 3.577 0.00121 0.165 0.00104 11859.75 17171.47 17.820 i I39876.91 146.10 606.10 3.375 0.00117 0.I56 0.00101 I I986.25 17I59.35 l 17.554 [ 151928.91 144.00 604.00 3.200 O.00113 0.148 0.00099 12052.00,j 17147.48 17.320 i 164009.41 142.10 602.10 3.052 0.00109 0.141 1 0.000 % 12080.50 l 17135.89 17.118 m

.~ CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY: P.D. Harizi REV. IM E2, DATE 2128/96 SHEET 5B OF M 82 Table 17 - Containment Pressure Available @ 1%IDay Leakage Rate - 75*F Seawater Temperature Lookup Eq.15 Eq.16 Eq.17 Eq.IE Eq.19 AT Mt* Pc Time Tp Tp PvP mieak a m8as (seconds) (*F) ( R) (psia) (Ibm /sec) (Ibm /sec) (sec) (Ibm) (psia) 172800 140.80 600.80 2.951 0.00106 0.135 0.00093 8790.59 17127.68 16.980 259200 130.30 590.30 2.243 0.00104 O.I31 0.00092 86400 17048.54 15 963 g { 328600 125.% _j $85.% 1.994 0.00081 j 0.102 j 0.00073 69400 16997.67 15.573 l 329600 125.90 585.90 1.991 0.00068 j 0.091 i 0.00063 1000 16997.05 15.567 [330600 125.84 585.84 1.987 0.00068 0.091 0.00063 1000 169 %.42 15.562 { 331600 125.78 585.78 1.984 0.00068 0.091 0.00062 1000 16995.80 15.557 332600 125.71 585.71 I.981 0.00068 0.091 0.00062 1000 16995.I8 15.552 333600 125.65 585.65 1.978 0.00068 j 0.091 0.00062 1000 16994.56 15.547 i 334600 125.59 585.59 1.975 0.00067 0.091 0.00062 1000 16993.94 15.541 ?i 335600 125.53 585.53 1.971 0.00067 0.091 0.00062 1000 16993.32 15.536 336600 125.46 1 585.46 1.%8 0.00067 0.090 0.00062 1000 16992.71 15.53I f 585.40 1.%5 0.00067 0.090 0.00061 1000 16992.09 15.526 337600 1 125.40 338600 125.34 ! 585.34 1.%2 0.00067 0.090 0.00061 1000 16991.48 15.521 g l.958 0.00067 O.090 0.00061 1000 16990.87 15.516 { 339600 125.28 585.28 i 340600 125.21 585.21 1.955 0.00066 G.090 0.00061 1000 16990.26 15.510 341600 125.15 585.15 1.952 0.00066 0.090 0.00061 1000 16989.65 i 15.505 342600 125.09 585.09 I.949 0.00066 0.090 0.00061 1000 16989.05 15.500 [343600 125.03 585.03 1.945 0.00066 0.089 0.00060 1000 16988.45 15.495 ! 344600 124.% } 584.% 1.942 0.00066 0.089 l 0.00060 1000 16987.84 15.490 [ 345600 124.90 j 584.90 1.939 0.00065 0.089 0.00060 1000 16987.24 15.485 ! 432000 120.60 j 580.60 I.723 0.00065 0.089 0.00060 86400 16935.56 15.128 518400 117.90 577.90 1.597 0.00049 0.080 ^ 0.00045 86400 168 %.29 14.908 j 604800 115.90 575.90 1.510 0.00035 0.075 0.00032 86400 16868.32 14.754 613440 115.70 ! 575.70 1 1.501 0.00018 0.071 j 0.00017 8640 16866.84 i 14.739 __ 622080 115.50 575.50 1.493 0.00016 0.071 0.00015 8640 16865.56 14.725 630720 115.30 575.30 I.484 0.00013 0.070 0.00012 8640 16864.51 14.711 639360 115.10 575.10 1.475 0.00009 0.070 O.00009 8640 16863.76 14.697 j 648000 114.90 574.90 1.467 0.00003 0.069 0.00003 8640 16863.53 14.696 656640 114.70 l 574.70 l 1.459 0.00000 0.069 i 0.00000 8640 16863.53 14.696

CALCUl.ATION SHEET PREPARED BY: P.Doody h Boston Edison CALC.# M662 CHECKED BY; P.D. Harlzl REV. LME7. DATE 2/28/96 SHEET 59 OF @4-97. Table 17 - Containment Pressure Available @,1%/ Day Leakage Rate - 75'F Seawater Temperature Lookup Eq.15 Eq.16 Eq.17 Eq.18 Eq.19 AT Mt* Pc Time Tp Tp Pvp micak to mgas (seconds) (F) (*R) (psia) (Ibm /sec) (ibm /sec) (sec) (ibm) (psia) 665250 114.50 574.50 l 1.451 0.00000 0.069 0.000')0 8640 16R63.53 14.6 % 673920 114.30 574.30 { l.443 0.00000 0.068 0.00000 8640 16863.53 14.6 % 682560 114.10 j 574.10 1.435 0.00000 } 0.068 0.00000 8640 16863.53 14.6 % 691200 113.90 573.90 1.427 0.00000 O.067 0.00000 8640 16863.53 14.6 % [ 777600 111.90 571.90 1.348 0.00000 0.067 i 0.00000 86400 16863.53 14.6 % 864000j 110.00 570.00 1.276 0.00000 O.063 O.00000 86400 16863.53 14.6 % 950400 i 108.80 l 568.80 1.232 0.00000 0.059 0.00000 86400 16863.53 14.6 % 5 h L t

~ - CALCULATION 5HEET PREPARED BY; P.Doody & Boston Edison CALC.# M662 CHECKED BY; P.D. Ha 21 REV. EtE2 DATE 2/28/96 SHEET 60 oF M@ Table 18 - Containment Pressure Available @ 5%IDay Leakage Rate-75*F Seawater Temperature Lookup Eq.15 Eq.16 Eq.17 Eq.18 Eq.19 Time Tp Tp PvP micak to m8as AT Mt* Pc (seconds) (*F) (*R) (psia) (Ibdsec) (Ibdsec) (sec) (Ibm) (psia) 124.70 584.70 1 1.929 j 17316.n 2 j 15.732 101.84 124.70 584.70 j l.929 0.00369 0.087 j 0.00339 101.84 17315.77 15.732 201.84 126.60 586.60 2 030 0.00369 0.087 0.00339 100.00 17315.43 15.877 401.84 128.90 588.90 2.159 0.00391 0.091 0.00359 200.00 17314.71 16.060 603.62 135.60 595.60 2.578 0.00417 j 0.097 0.00380 201.78 17313.95 16.637 1003.62 143.80 603.80 3.184 0.00485 0.114 0.00435 400.00 17312.21 17.435 2005.66 154.20 614.20 4.123 0.00556 0.139 j 0.00488 1002.04 17307.31 18.616 g [ 2786.91 159.10 619.10 4.644 0.00635 0.177 O.00539 781.25 17303.10 l 19.248 3568.16 162.70 622.70 5.057 0.00668 0.198 0.00557 781.25 17298.74 } 19.743 4349.41 165.40 625.40 5.388 0.00690 0.214 0.00569 781.25 17294.30 20.133 I 5130.66 167.40 627.40 5.648 0.00707 0.227 I 0.00576 781.25 17289.80 20.437 [ 5911.91 169.10 629.10 5.870 0.mnI8 0.238 j 0.00581 781.25 17285.27 20.695 l 6693.16 170.70 630.70 6.093 0.00721t 0.246 0.00534 781.25 17280.70 20.951 [ 10447.91 174.80 634.80 6.690 0.00737 0.255 0.00587 3754.75 17258.66 21.627 f 22.080 [ 1 % 33.66 177.60 637.60 7.126 0.00759 0 219 0.00593 9185.75 17204.16 l 28998.41 176.70 636.70 6.981 0.00772 O.2 % j 0.00595 9364.75 17148.42 21.867 ( 38913.91 174.10 634.10 6.586 0.00766 j 0.292 0.00593 9915.50 17089.65 21.360 3 g i 49139.91 170.40 630.40 6.051 0.00750 0.277 0.00587 10226.00 17029.58 } 20.687 59757.16 166.40 626.40 5.518 0.00728 0.257 0.00579 10617.25 16 % 8.I3 20.009 70590.16 162.60 622.60 5.045 1 0.00702 0.237 0.00567 10833.00 16906.68 19.395 ' 81643.66 159.20 ! 619.20 4.655 0.00675 0.219 0.00554 11053.50 16845.48 18.876 , 92860.66, 156.20 616.20 4.332 0.00649 0.204 0.00539 11217.00 16785.01 18.433 j i 104289.91 153.50 613.50 4.054 0.00624 0.191 0.00524 I1429.25 16725.13 l 18.043 l 116030.91 150.90 610.90 3.802 0.00600 0.180 0.00508 11741.00 16665.46 17.682 i 127890.66 148.40 608.40 3.577 0.00575 0.170 0.00491 I1859.75 16607.20 17.352 [ 139876.91 146.10

• 606.10 3.375 0.00550 j

0.162 0.00473 11986.25 16550.47 j 17.051 151928.91 144.00 604.00 3.200 0.00524 0.154 0.00455 12052.00 16495.69 16.783 164009.41 142.10 602.10 3.052 0.00499 0.147 0.00436 12080.50 16443.08 16.550

a CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY: P.D. Harizi REV. ME2 DATE 2128/96 SHEET h OF MN Table 18 - Containment Pressure Available @ 5%/ Day Leakage Rate-75"F Seawater Temperature Lookup Eq.15 Eq.16 Ea.17 Eq.18 Eq.19 AT Mt* Pc Time Tp Tp PvP micak to

m8a, (seconds)

(F) (*R) (psia) (IbWsd (ibm (sec) (Ibm) (psia) 172800 140.80 600.80 l 2.951 0.00475 0.141 0.00417 8791 16406.44 16.389 f259200 130.30 { 590.30 j 2.243 0.00458 0.137 0.00403 86400 16058.51 15.167 3 ! 328600 125.% 585 96 1 1.994 0.00256 0.108 0.00231 69400 15898.45 14.6 % 3296N) ! 125.90 585.90 1.991 0.00000 0.098 0.00000 1000 15898.45 14.696 330600 125.84 585.84 1.987 0.00000 0.097 0.00000 1000 15898.45 14.6 % 331600 125.78 585.78 1.984 0.00000 0.097 0.00000 1000 15898.45 14.6 % 332600 125.71 585.71 1.981 0.00000 0.097 0.00000 1000 15898.45 14.6 % l 333600 125.65 585.65 1.978 0.00000 j 0.097 j 0.00000 1000 15898.45 i 14.696 i 334600 i25.59 585.59 1.975 0.00000 0.097 0.00000 1000 15898.45 14.6 % I 335600 115.53 585.53 1.971 0.00000 0.097 0.00000 1000 15898.45 14.6 % 3 I 336600 12.1.46 585.46 l 1.%8 0.00000 0.0 % l 0.00000 1000 15898.45 14.6 % } 1.%5 0.00000 0.096 O.00000 1000 15898.45 14.6 % 337600 125.40 585.40 g 338600 125.34 585.34 1.%2 0.00000 0.0 % 0.00000 1000 15898.45 14.6 % I 339600 125 28 585.28 1.958 0.00000 O.096 0.00000 1000 15898.45-14.696 340600 125.21 585.21 1.955 0.00000 0.0 % 0.00000 1000 15898.45 1 14.696 341600 125.I5 585.15 1.952 0.00000 0.095 0.00000 1000 15898.45 14.6 % 342600 125.09 585.09 1.949 0.00000 0.095 0.00000 1000 15898.45 14.6 % { 0.095 0.00000 1000 15898.45 14.6 % 343600 125.03 $85.03 1.945 0.00000 ( 344600 124.% 584.96 1.942 0.00000 j 0.095 0.00000 1000 15898.45 14.6 % 345600 124.90 584.90 1.939 0.00000 1 0.095 0.00000 1000 15898.45 14.6 % 432000 120.60 580.60 1.723 0.00000 j 0.095 0.00000 86400 15898.45 j 14.6 % 518400 117.90 577.90 1.597 0.00000 0.083 0.00000 86400 15898.45 i 14.6 % i 604800 115.90 575.90 1.510 0.00000 0.076 0.00000 86400 15898.45 j I4.6 % [ 613440 115.70 j 575.70 } 1.501 0.00000 0.07I j 0.00000 8640 I5898.45 } I4.6 % 1 622080 115.50 575.50 1.493 0.00000 0.071 0.00000 8640 15898.45 14.6 % j i 630720 115.30 575.30 1.484 0.00000 0.070 0.00000 8640 15898.45 14.696 639360 115.10 575.10 1.475 0.00000 0.070 0.00000 ti640 15898.45 14.696 648000 114.90 574.90 l.467 0.00'X)0 0.069 0.00000 8640 15898.45 14.696 656640 114.70 574.70 1.459 0.00000 0.069 0.00000 8640 15898.45 14.696 i

cal. Cut.ATION SHEET PREPARED BY; P.Doody Q gggggg Edison CALC. # M662 CHECKED BY: P.D. Harizi REV. ti.62 DATE 2/28/96 SHEET [N OF M 81 Table 18 - Containment Pressure Availsble (il 5%/ Day Leakage Rate-75 F Seawater Temperature Lookup Eq.15 Eq 16 Eq.17 Eq.18 Eq.19 AT Mt* Pc Time Tp Tp PvP micak m mgu (seconds) ( F) ( R) (psia) (Ibm /sec) (Ibm /sec) (sec) (Ibm) (psia) 665280 114.50 574.50 1.451 0.00000 0.069 0.00000 8640 15898.45 14.6 % 673920 114.30 574.30 1.443 0.00000 0.068 0.00000 8640 15898.45 14.6 % 682560 114.10 574.10 1.435 0.00000 i 0.068 0.00000 8640 !5898.45 f 146% ^ 691200 113.90 573.90 1.427 0.00000 0.067 0.00000 8640 15898.45 14.6 % 1 777600 1 I l.'i0 571.90 } 1.348 0.00000 0.067 0.00000 86400 15898.45 14.6 % 864000 110.00 570.00 1.276 0.00000 0.063 O.00000 86400 15898.45 14.6 % 950400 108.80 568.80 1.232 0.00000 0.059 0.00000 86400 15898.45 14.6 % g i

CALCULAT!ON SHEET PREPARED BY; P.Doody & Boston Edison CALC.8 M662 CHECKED BY: P.D. Harizi REV. Yt61 DATE 2/28/96 SHEET O OF k b2-Table 19 - Updated Analysis - Containment Pressure for RIIR Pump NPSIIR st 1%/ Day Leakage Rate-75 F Seawater Temperature Fi 1.5-10 Lookup Lookup Eq.19 Eq.21 Eq.22 Eq.23 Eq.24 P, Reg'd for Time Time Tp p Psp Pc Pgas 11: lis! NPSilil NPSilA cf23 Afargin feet (secs) (hours) (*F) (ibm' Y) (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet) f l'alues below l'alues below I'alues below l'alues below p!ottedon plottedon plottedon plottedon Figure 6 Figure 6 Figure 6 Figure 7 U U U U 101.84 0.028 124.70 61.63 1.929 15.732 32.25 12.5 2.63 } 42.1 7.55 i 19.1 J ^ 201.84 0.056 126.60 61.60 2.030 15.877 32.37 12.5 2.63 42.2 7.65 } 19.2 401.84 0.112 128.90 61.56 2.159 16.061 32.52 12.5 2.63 42.4 7.77 i 19.4 603.62 0.168 135.60 61.44 2.578 16.639 32.95 12.5 2.63 42.8 i 8.18 } 19.8 ^ 3.184 17.438 33.48 [ 12.5 2.63 43.3 'l 8.77 [ 20.3 1003.62 0.279 143.80 } 61.31 2005.66 0.557 154.20 61.10 4.123 18.621 34.I7 [ I2.5 2.63 44.0 J 9.69 { 21.0 2786.91 0.774 159.10 61.01 4.644 19.257 34.49 12.5 2.63 44.4 10.21 21.4 3568.16 0.991 162.70 60.94 5.057 19.754 34.73 12.5 2.63 44.6 10.61 21.6 4349.41 1.20R 165.40 60.88 5.388 20.148 34.91 12.5 2.63 44.8 j 10.94 21.8 l 5130.66 1.425 167.40 60.85 5.648 20.455 35.04 12.5 2.63 44.9 I1.20 21.9 ( 5911.91 1.642 169.10 60.82 5.870 20.716 35.15 12.5 2.63 45.0 11.42 } 22.0 [ 6693.16 1.859 170.70 60.77 6.093 20.976 35.26 12.5 2.63 45.1 11.63 ( 22.1 L j 10447.91 2.902 174.80 60.68 6.690 21.666 35.54 [ 12.5 2.63 45.4 12.22 22.4 j 3 1 % 33.66 5.454 177.60 60.63 7.126 22.158 35.70 12.5 2.63 } 45.6 j 12.65 22.6 4 28998.41 i 8.055 176.70 60.65 6.981 21.983 35.62 12.5 2.63 45.5 12.51 22.5 38913.91 j 10.809 174.10 60.70 6.586 21.516 35.42 12.5 2.63 45.3 12.12 22.3 49139.91 ! 13.650 170.40 60.78 6.051 20.884 35.14 12.5 ! 2.63 45.0 l I1.59 22.0 [ 59757.16 i 16.599 166.40 60.87 5.518 20.246 34.84 12.5 2.63 i 44.7 l 11.07 21.7 ] } 44.4 ,I 10.60 21.4 70590.16 { 19.608 162.60 60.95 5.045 19.673 34.56 12.5 2.63 81643.66 22.679 159.20 61.01 4.655 19.193 34.31 12.5 l 2.63 44.2 10.22 { _21.2 92860.66 25.795 156.20 61.06 4.332 18.788 34.09 12.5 2.63 44.0 9.90 1 21.0 l 104289.9 28.% 9 153.50 61.11 4.054 18.437 33.89 [ 12.5 2.63 43.8 9.63 j 20.8 j ! 116030.9 i 32.231 150.90 61.17 3.802 18.114 33.69 4 12.5 1 2.63 1 43.6 l 9.38 i 20.6 i

s CALCtJLATION SHEET PREPARED BY: P.Doody & Boston Edison i CALC.# M662 CHECKED BY: P.D. Harizi REV. M 62. DATE 2/28/96 SHEET [Y OF [kb2-Table 19 - Updated Analysis - Containment Pressure for RIIR Pump NPSIIR at 1%IDay Leakage Rate-75*F Seawater Temperature F14.5-10 Lookup Lookup Eq.19 Eq.21 Eq.22 Eq.23 Eq.24 P, Reg'd for Time Time Tp p Pvp Pc Pgas II: lis! NPSilA NPSIIA of23 Alargin feet (secs) (hours) (*F) (ibmgY) (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet) 127890.7 35.525 148.40 61.22 3.577 17.820 33.50 ! 12.5 2.63 43.4 9.16 20.4 [ 12.5 2.63 43.2 8.% 20.2 139876.9 38.855 146.10 61.26 3.375 17.554 33.33 3 151928.9 42.202 144.00 j 61.31 3.200 17.320 33.16 [ 12.5 2.63 { 43.0 8.79 { 20.0 ! 164009.4 45.558 142.10 l 61.34 3.052 17.118 33.02 12.5 2.63 l 42.9 8.65 19.9 [ 172800 48.000 140.80 ' 61.36 2.951 16.980 32.92 12.5 2.63 j 42.8 8.55 19.8 259200 l 72.000 130.30 61.54 2.243 15.963 32.10 12.5 2.63 42.0 7.85 l 19.0 328600 91.278 125.% 61.61 1.994 15.573 31.74 12.5 2.63 41.6 7.61 I8.6 329600 91.556 125.90 61.61 1.99I I5.567 1 31.73 12.5 2.63 41.6 7.61 I8.6 330600 91.833 125.84 61.61 1.987 15.562 31.73 12.5 2.63 41.6 7.61 18.6 331600 92.111 125.78 61.61 1.984 15.557 31.72 12.5 2.63 { 41.6 7.60 18.6 332600 92.389 125.71 61.62 1.981 15.552 31.72 12.5 2.63 j 41.6 7.60 { 18.6 333600 92.667 125.65 61.62 1.978 15.547 31.71 12.5 2.63 41.6 7.60 i 18.6 I 334600 92.944 125.59 61.62 1.975 15.541 31.7I I 2.5 2.63 41.6 7.59 18.6 I 335600 93.222 125.53 61.62 1.971 15.536 31.70 12.5 2.63 41.6 7.59 18.6 336600 93.500 i 125.46 61.62 1.968 15.531 31.70 12.5 2.63 41.6 7.59 I8.6 1 337600 93.778 125.40 61.62 1.965 15.526 31.69 12.5 1 2.63 I 41.6 l 7.58 i 18.6 " 338600 ! 94.056 125.34 61.62 1.962 15.521 31.69 12.5 2.63 41.6 7.58 18.6 1 339600 [ 94.333 125.28 61.62 1.958 15.516 31.68, 12.5 2.63 41.6 7.58 18.6 I 3 { 340600 94.611 125.21 61.62 j 1.955 15.510 31.68 [ 12.5 { 2.63 { 41.5 7.57 { 18.5 4 E341600 94.889 125.I$ 61.62 1.952 15.505 31.67 [ 12.5 2.63 l 41.5 7.57 I 8.5 342600 95.167 125.09 . 61.63 1.949 15.500 31.67 ! 12.5 2.63 41.5 7.57 e3 I 343600 95.444 125.03 j 61.63 1.945 15.495 31.66 12.5 2.63 41.5 7.56 18.5 344600 95.722 124.96 l 61.63 1.942 15.490 31.66 12.5 2.63 41.5 7.56 18 5 345600 96.000 124.90 61.63 1.939 15.485 31.65 12.5 2.63 41.5 ! 7.56 18.5 l_.2 l [ 432000 120.000 120.60 61.70 1.723 15.128 31.29 12.5 2.63 41.2 7.35 8 [ 518400 144.000 117.90 61.73 1.597 14.908 31.05 12.5 [ 2.63 40.9 7.23 17.9 j l 604800 i 168.000 115.90 61.77 1.510 i 14.754 30.88 12.5 i 2.63 5 40.7 7.14 l 17.7 i

. CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.' # M662 CHECKED BY; P.D. Harizi REV. E4 El DATE 212 819 6 % 91 SHEET 6f OF Table 19 - Updated Analysis - Containment Pressure for RIIR Pump NPSilR at 1%IDay Leakage Rate-75'F Seawater Temperature F14.5-10 Lookup Lookup Eq.I9 Eq.21 Eq.22 Eq.23 Eq.24 P, Reg'd for Time Time Tp p Pvp Pc Pgas lit lis! NPSILI NPSilA of23 Margin feet (secs) ^ (hours) (*F) (lbm'ft') (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet) I70.400 1I5.70 61.77 1.501 I4.739 30.86 12.5 2.63 40.7 7.I3 17.7 613440.: 622080 [ 172.800 115.50 61.77 1.493 14.725 30.85 12.5 2.63 40.7 7.13 j 17.7 l 630720 175.200 115.30 61.78 1.484 14.711 30.83 12.5 2.63 40.7 7.12 l 17.7 639360 177.600 115.10 61.78 1.475 14.697 30.82 12.5 2.63 40.7 j 7.1 I [ I7.7 i 648000 180.000 114.90 61.78 1.467 14.696 30.83 12.5 2.63 40.7 j 7.10 l 17.7 656640 182.400 114.70 61.78 1.459 14.6 % 30.85 12.5 2.63 40.7 j 7.09 17.7 665280 184.800 114.50 61.79 1.451 14.6 % 30.87 12.5 2.63 40.7 7.09 17.7 673920 287.200 114.30 61.79 1.443 14.6 % 1 30 t,8 12.5 2.63 i 40.8 7.08 17.8 682560 189.600 114.10 61.79 1.435 14.696 30.90 12.5 2.63 40.8 7.07 17.8 691200 192.004 113.90 61.80 1.427 14.6 % 30.92 12.5 2.63 40.8 7.06 17.8 1 777600 j 216.000 111.90 61.83 i 1.348 14.696 31.09 [ 12.5 2.63 41.0 6.99 18.0 l 864000 i 240.000 110.00 61.86 1.276 14.6 % 31.24 12.5 2.63 41.1 6.92 18.1 950400 l 264.000 108.80 61.88 1.232 14.6 % 31.33 12.5 2.63 41.2 6.87 18.2

CALCULATION @HEET PREPARED BY. P.Doody & Boston Edison ~ CALC.# M662 CHECKED BY: P.D. Harizi REV. M E7. DATE 2128/96 SHEET [6 OF A 01 Table 20 - Updated Analysis - Containment Pressure for Core Spray Purnp NPSIIR at 1%/Iiay Leakage Rate-75*F Seawater Temperature F14.5-10 Lookup Lookup Eq.19 Eq. 21 Eq.22 Eq.23 Eq.24 P, Req'd for Time Time 1p p Ihp Pc Pgas llz lisi NPSIL4 NPSilA of29 Margin feet _ secs) (hours) (*F) (Ibm 91') (psia? (psia) (feet) (feet) (feet) (feet) (psia) (feet) ( l'alues below l'alues below I'alues below I'a!ues below plottedon plottedon plottedon plottedon Figure 6 Figure 6 ligure 6 Figure 7 0 0 0 0 1 4 + 101.84 0.028 124.70 j 61.63 j l.929 [, 15.732 32.25 12.5 2.40 j 42.3 10.02 j 13.3 201.84 0.056 126.60 61.60 2.030 [ 15.877 32.37 12.5 2.40 j 42.5 10.11 13.5 401.84 0.112 128.90 61.56 2.159 l 16.061 32.52 12.5 2.40 i 42.6 10.24 13.6 603.62 O.168 135.60 61.44 2.578 16.639 32.95 12.5 2.40 43.1 i 10.64 14.1 i 4 1003.62 0.279 143.80 61.31 3.184 17.438 33.48 ( 12.5 4 2.40 43.6 j 11.23 14.6 2005.66 0.557 154.20 61.10 4.i23 18.621 34.17 i 12.5 2.40 44.3 12.14 15.3 2786.91 0.774 159.10 61.01 4.644 19.257 34.49 12.5 2.40 44.6 12.65 15.6 i 3568.16 0.991 162.70 60.94 5.057 19.754 34.72 12.5 2.40 44.8 13.06 15.8 4349.41 j 1.208 165.40 60.88 5.388 20.148 34.91 12.5 '. 40 4 45.0 } 13.38 16.0 l 13.63 16.1 5130.66 1.425 167.40 60.85 5.648 20.455 35.04 12.5 2.40 } _ 45.1 5911.91 1.642 169.10 60.82 5.870 20.716 35.15 12.5 2.40 45.3 13.85 16.3 3 6693.16 1.859 170.70 l 60.77 6.093 20.976 j 35.26 12.5 [ 2.40 1 45.4 l 14.07 16.4 + 10447.91 2.902 174.80 j 60.68 6.690 21.666 35.54 12.5 2.40 45.6 j 14.66 16.6 1 % 33.66 5.454 177.60 60.63 7.126 [ 22.158 35.70 12.5 2.40 , 45.8 j 15.08 16.8 28998.41 8.055 176.70 60.65 6.981 21.983 35.62 12.5 2.40 45.7 14.94 16.7 g 38913.91 10.809 174.10 ,,jo.70 6.586.,_ 21.516 35.42 12.5,__ 2.40 _ _45.5 14.55 16.5 j 3, 49139.91 l 13.650 170.40 l 60.78 6.051 20.884 35.14 12.5 i.2.40 15.2 i 14.03 16.2 j 59757.16 16.599 166.40 j 60 87 5.518 20.246 34.84 12.5 2.40 44.9 13.51 15.9 I 70590.I6 19.668 162.60

60.95 5.045 19.673 34.56 12.5 2.40 44.7 13J)4._,

15.7 81643.66 ' 22.679 159.20 i 61.01 4.655 19.193 34.31 12.5 1 2.40 44.4 j 12.66 15.4 i l 92860.66 25.795 156.20 1 61.06 4.332 18.788 34.09 12.5 i 2.80 44.2 j 12.35 15.2 , 104289.9 28.969 153.50 1 61.11 4.054 13.437 33.89 l 12.5

2A0 44.0 j 12.07 15.0 g

l ! 116030.9 i 32.231 i 150.90 l 61.:7 i 3.802 i I8.II4 33.69 i 12.5 3 2.40 i 43 8 ! I1.83 14.8 l l

CALCULATION SHEET PREPARED BY: P.Doody r & Boston Edison CALC.# M662 CHECKED BY: P.D. Harizi REV. '24 E'l DATE 2/28/96 SHEET 47 OF M 87. Table 20 - Updated Analysis - Con'.ainment Pressure for Core Spray Pump NPSHR at 1%/ Day Leakage Rate-75"F Seawater Temperature F14.5-10 lxokup Lookup Eq.19 Eq. 21 Eq.22 Eq.23 Eq.24 P, Reg'd for Time Time Tp p Pvp Pc Pgas II: list NPSibl NPSILI of29 Margin feet (secs) Grours) rF) (thm(fY) (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet) 127890.7 35.525 148.40 l 61.22 3.577 17.820 33.50 12 5 2.40 i 43.6 11.61 i 14.6 139876.9 38.855 146.10 j 61.26 3.375 17.554 i 33.33 12.5 2.40 j 43.4 11.42 [ 14.4 li 3 kl51928.9 j 42.202 144.00 61.31 j 3.200 17.320 33.16 [ 12.5 ! 2.40 43.3 11.25 { 14.3 l i l 164009.4 45.558 142.10 61.34 3.052 17.118 33.02 12.5 1 2.40 43.1 11.10 14.1 I 172800 48.000 140.80 6i.36 2.951 16.980 32.92 12.5 2.40 43.0 I1.00 14 0 l 3 [ 259200 72.000 130.30 61.54 2.243

15. % 3 32.10 12.5 2.40 42.2 10.32 13.2

,I" 12.5 328600 91.278 125.96 61.61 1.994 15.573 31.74 2.40 41.8 10.08 12.8 329600 91.556 125.90 61.61 1.991 15.567 31.73 [ 12.5 2.40 ! 41.8 10.08 12.8 j g i 3306 % } 91.833 125.84 j 61.61 1.987 15.562 31.73 12.5 2.40 41.8 10.07 12.8 l { 331600 { 92.111 125.78 61.61 1.984 15.557 31.72 12.5 2.40 41.8 10.07 12.8 j [ 332600 ! 92.389 125.71 61.62 i 1.981 15.552 31.72 12.5 { 2.40 41.8 l 10.07 l 12.8 ' ' 333600 92.667 125.65 61.62 1.978 15.547 _j 31.71 12.5 2.40 41.8 10.06 12.8 334600 92.944 125.59 j 61.62 1.975 15.541 j 31.71 I 12.5 2.40 41.8 10.06 12.8 3 ! 335600 93.222 125.53 61.62 1.971 15.536 31.70 ! 12.5 2.40 41.8 10.06 12.8 [ 12.5 I 2.40 41.8 10.06 12.8 336600 93.500 125.46 61.62 1.968 ,__15_.531 31.70 , 337600 { 93.778 125.40 61.62 1.965 [ 15.526 31.69.j. 12.5 2.40_,, 41.8 10.05 12.8 l p i 338600 94.056 ! 125.34 61.62 j 1.962 i 15.521 31.69 12.5 2/0 41.8 10.05 12.8 i [ 339600 94.333 [ 125.28 61.67 _ ' I.958 15.516 31.68 12.5 2.40 41.8 10.05 12.8 j 340600 94.611 125.21 61.t.r. 1.955 15.510 31.68 12.5 2.40 41.8 10.04 i 12.8 j i 341600 94.889 125.15 61.62 1.952 15.505 31.67 12.5 2.40 41.8 10.04 12.8 [ 342600 95.167 125.09 61 63 1.949 15.500 31.67 12.5 2.40 41.8 10.04 12.8 343600 95.444 [ 125.03 l 61.63 1.945 l 15.495 31.66

12.5 2.40 41.8 i

10.03 12.8 344600 95.722 124.96 ! 61.63 1.942 15.490 31.66

12.5 2.40 41.8 j 10.03 12.8 345600 96 000 124.90 61.63 j 1.939 15.485 31.65 [ 12.5 2.40 41.8 j 10.03 j

12.8 j g 432000 120.000 [ 120.60 61.70 1.723 15.128 31.29 12.5 2.40 41.4 9.82 { 12.4 518400 144.000 117.90 61.73 1.597 14.908 31.05 12.5, 2.40 41.2 9.70 j 12.2 604800 168.000 115.90 ! 61.77 1.510 14.754 30.88 12.5 2.40 l 41.0 9.62 12.0

CALCULATION SHEET PREPARED BY: P.Doody h Boston Edison CALC.# M662 CHECKED BY; P.O. Harlzl REV. IM 62 DATE 2/28!96 SHEET $8 OF MS Table 20 - Updated Analysis - Containment Pressure for Core Spray Pump NPSIIR at 1%/ Day Leakage Rate-75*F Seawater Temperature l F14.5-lO 1 Lookup Lookup Eq.19 Eq.21 Eq. 22 Eq.23 Eq.24 Pa Reg'd for Time Time Tp p Pvp Pc Pgas llz lis! NPSilA NPSilA of29 .11argin feet (secs) (hours) (*F) (Ibm' Y) (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet) J { 613440 { 170.400 115.70 l 61.77 1.501 14.739 30.86 12.5 2.40 41.0 l 9.61 12.0 ! 622080 l 172.800 115.50 61.77 1.493 14.725 30.85 12.5 2.40 40.9 j 9.60 I 1.9 3 630720 175.200 115.30 61.78 i 1.484 14.711 30.83 12.5 2.40 l 40.9 9.59 l 11.9 639360 177.600 115.10 61.78 1.475 14.697 30.82 12.5 2.40 40.9 9.58 11.9 648000 180.000 114.90 61.78 1.467 14.696 30.83 12.5 2.40 40.9 I 9.58 11.9 3 [ 656640 182.400 114.70 j 61.78 1.459 14.696 30.85 [ 12.5 2.40 41.0 j 9.57 { 12.0 [ 665280 184.800 114.50 j 61.79 1.451 14.696 30.87 12.5 2.40 41.0 } 9.56 12.0 i 673920 187.200 114.30 1 61.79 1.443 14.696 30.88 12.5 2.40 . 41.0 9.55 12.0 682560 189.600 114.10_ 61.79 1.435 14.696 30.90 12.5 2.40 41.0 9.55 12.0 691200, 192.000 113.90 61.80 1.427 14.696 30.92 12.5 2.40 41.0 9.54 12.0 g 777600 { 216.000 111.90 j 61.83 1.348 14.696 31.09 12.5 2.40 j 41.2 9.46 { 12.2 864000 240.000 l10.00 61.86 1.276 14.696 31.24 12.5 2 40 41.3 9.39 12.3 950400 264.000 108.80 61.88 1.232 14.696 31.33 12.5 2.40 41.4 9.35 12.4

CALCUl ATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY: P.D. Harizi REV. Et E2. DATE 2/28/96 SHEET 49 OF M 82 Table 21 - Updated Analysis - Containment Pressure for RIIR Pump NPSilR at 5%IDay Leakage Rate-75"F Seawater Temperature F14.5-lO Lookup Lookup Eq.19 Eq.21 Eq.22} Eq.23 Eq.24 P, Reg'd for P as 11z Ils! NPSilA NPSilA of23 Afargin Time Time Tp p Pvp Pc R j feet l s) (n* ours) (*F) (Ibm /ft') (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet) l'alues below l'alues below l'alues below l'alues below plottedon plottedon plottedon plottedon Figure 6 Figure 6 Figure 6 Figure 7 0 0 0 0 1 1 a 4 4 + 101.84 } 0.028 124.7 61.63 1.929 15.732 ' 32.25 12.5 [ 2.63 42.1 j 7.55 19.1 201.84 0.056 126.6 61.60 2.030 15.87/ 32.37 12.5 2.63 42.2 i 7.65 19.2 ( 401.84 0.112 128.9 61.56 2.159 16.060 32.52 12.5 2.63 42.4 j 7.77 19.4 603.62 i 0.168 135.6 61.44 2.578 16.637 32.95 12.5 2.63 i 42.8 i 8.18 19.8 1003.62 j 0.279 143.8 61.31 3.184 17.435 33.47 12.5 2.63 j 43.3 8 77 20.3 2005.66 j 0.557 154.2 j 61.10 4.123 18.616 34.16 12.5 2.63 j 44.0 _j 9.69 21.0 1 2786.91 0.774 159.1 ! 61.01 4.644 19.248 34.47 12.5 2.63 44.3 10.21 21.3 3568.I6 0.991 162.7 j 60.94 5.057 19.743 34.70 12.5 2.63 44.6 10.61 21.6 j 4349.41 } 1.208 165.4 60.88 5.388 20.133 34.88 12.5 2.63 44.7 10.94 } 21.7 5130.66 ' l.425 167.4 60.85 5.648 20.437 35.00 12.5 2.63 44.9 11.20 21.9

5911.91 1.642 169.I 60.82 5.870 20.695 35.10 12.5 2.63 45.0 I1.42 22.0 6603.16 1.859 170.7

60.77 6.093 20.951 35.21 12.5 [ 2.63

} 45.1 11.63 22.1 j 10447.91 2.902 174.8 I (0.68 1 690 21.627 35.44_j. 12.5 2.63 45.3 j 12.22 22.3 j I 177.6 60.63 7.126 22.080 35.52 12.5 2.63 45.4 12.65 22.4 j 1 % 33.66 5.454 28998.41 8.055 176.7 60.65 6.981 21.867 35.34 12.5 2.63 45.2 12.51 22.2 l 38913.91 10.809 174.1 60.70 6.586 21.360 35.05 12.5 2.63 44.9 12.I2 21.9 49139.91 13.650 170.4 60.78 6.051 20.687 34.67 l 12.5 i 2.63 i 44.5 11.59 i 21.5 59757.16 16.599 166.4 60.87 5.518 i 20.009 34.28 12.5 2.63 i 44.2 11.07 21.2 70590.16 19.608 162.6 60.95 5.045 19.395 33.91 12.5 2.63 i 43.8 l 10.60 20.8 81643.66 ! 22.679 159.2 ! 61.01 ! 4.655 18.876 33.56 12.5 2.63 43.4 10.22 20.4 92860.66 25.795 156.2 61.06 4.332 18.433 33.25 12.5 2.63 43.1 9.90 20.1 104289.91 28 969 I I53.5 61.I1 4.054 18.043 32.96 12.5 2.63 42.8 i 9.63 i I9.8 [ t16030.91 i 32.231 i 150.9 61.17 ' 3.802 i 17.682 32.67 ' 12.5 l 2.63 1 42.5 9.38 19.5

.o CALCUl.ATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY: P.D. Harizi REV. Et 62. DATE 2/28/96 Mk SHEET 70 OF Table 21 - Updated Analysis - Containment Pressure for RIIR Pump NPSIIR at 5%! Day Leakage Rate-75*F Seawater Temperature F14.5-lO Lookup Lookup Eq.19 l Eq.21 Eq.22 Eq.21 Eq.24 P, Reg'd for Time Time Tp p Pvp Pc Pgas 11: list NPSIM NPSIM of23 Afargin feet (secs) (hours) (*F) (ibmp') (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet) 127890.66 35.525 148.4 61.22 3.577 17.352 32.40 12.5 2.63 42.3 9.16 19.3 ] 139876.91, 38.855 146.1 61.26 3.375 17.051 32.15 12.5 2.63 42.0 8.% 19.0 151928.91 ! 42.202 144.0 J 61.31 3.200 16.783 31.90 12.5 j 2.63 41.8 j 8.79 j 18.8 [ 164009.4I i 45.558 142.I 61.34 3.052 I6.550 31.69 12.5 2.63 41.6 8.65 18.6 ( 172800 48.000 140.8 61.36 2.951 16.389 31.54 12.5 2.63 41.4 8.55 18.4 4 259200 72.000 130.3 61.54 2.243 15.167 i 30.24 12.5 2.63 40.1 7.85 17.1 328600 91.278 126.0 61.61 1.994 14.696 29.69 12.5 2.63 39.6 } 7.61 I 16.6 1 I 329600 91.556 125.9 61.6I i 1.991 14.6 % 29.69 . 12.5 2.63 39.6 7.61 j 16.6 330600 91.833 125.8 61.61 1.987 14.696 29.70 12.5 2.63 39.6 7.61 16.6 331600 92.111 125.8 61.6I 1.984 14.696 29.71 12.5 2.63 39.6 7.60 16.6 332600 92.389 125.7 61.62 1.981 14.696 29.72 12.5 2.63 j 39.6 7.60 16.6 l 333600 92.667 125.7 61.62 1.978 14.6 % 29.72 12.5 2.63 39.6 7.60 16.6 334600 92.944 125.6 61.62 1.975 14.6 % 29.73 12.5 2.63 39.6 7.59 16.6 g g 335600 93.222 125.5 61.62 1.971 14.6 % 29.74 12.5 2.63 39.6 7.59 l 16.6 336600 93.500 125.5 61.62 1.968 14.6 % 29.74 12.5 2.63 39.6 7.59 [ 16.6 i 33600 93.778 125.4 61.62 1.965 14.696 29.75 12.5 l 2.63 39.6 7.58 I 16.6 [ 338600 94.056 125.3 61.62 1.962 14.696 29.76 12.5 2.63 39.6 7.58 i 16.6 I 339600 94.333 125.3 61.62 1.958 14.696 29.77 12.5 2.63 39.6 7.58 j 16.6 3 340600 i 94.611 125.2 61.62 1.955 14.696 29.77 i 12.5 2.63 i 39.6 l 7.57 16.6 341600 94,889 125.2 61.62 1.952 14.696 29.78 12.5 2.63 39.6 7.57 16.6 342600 95.167 125.1 61.63 1.949 14.6 % 29.79 12.5 2.63 39.7 7.57 16.7 l 343600 95.444 125.0 61.63 1.945 14.696 29.79 12.5 2.63 39.7 7.56 16.7 344600 95.722 125.0 61.63 1.942 J 14.696 29.80 12.5 2.63 39 7 7.56 16.7 3 345600 96.000 124.9 1 61.63 1.939 14.696 29.81 12.5 2.63 39.7 i 7.56 16.7 43F00 120.000 120.6 61.70 1.723 14.696 30.28 12.5 2.63 40.1 7.35 17.1 5134d 144.000 117.9 61.73 1.597 14.696 30.56 12.5 2.63 40.4 7.23 17.4 I 604800 l 168.000 115.9 ( 61.77 1.510 14.696 30.74 12.5 2.63 40.6 I 7.14 17.6

s CALCULATION O HEET PREPARED BY: P.Doody & Boston Edison CALC. '# M682 CF"ECKED BY: P.D. Harizi REV. N El DATE 2/28/96 SHEET 7/ OF M 8 2. Table 21 - Updated Analysis - Containment Pressure for RilR Pump NPSIIR at 5%/ Day Leakage Rate-75*F Seawater Temperature F14.5-10 Inokup Ixokup Eq.19 Eq.21 Eq.22 Eq.23 Eq.24 P, Ree, *d for Time Time Tp p Pvp Pc Pgas llz list NPSilA NPSIIA of23 Afargin feet (secs) thours) ('F) Gbmp'] (psia) (psia) (feet) (feet) (feet) (feet) (psia) (fe~ et) 613440 170.400 115.7 61.77 j l.501 14.696 30.76 12.5 2.63 40.6 7.13 17.6 j 622080,. 172.800 115.5 j 61.77 j 1.493 14.696 30.78 12.5 2.63 40.6 } 7.13 17.6 630720 { 175.200 115.3 61.78 j 1.484 14.6 % 30.80 g 12.5 2.63 j 40.7 7.12 { l .7 639360 l 177.600 115.I 61.78 1.475 14.696 30.82 12.5 2.63 40.7

7. I I 17.7

( 648000 j 180.000 114.9 61.78 1.467 14.696 30.83 12.5 2.63 40.7 7.10 17.7 j [ 656640 182.400 114.7 61.78 1.459 14.696 30.85 12.5 2.63 40.7 7.09 { 17.7 665280 184.800 114.5 61.79 1.451 14.696 30.87 12.5 2.63, 40.7 7.09 17.7 3 673920 187.200 114.3 61.79 1.443 14.6 % 30.88 12.5 2.63 40.8 j 7.08 17.8 682560 189.600 114.1 61.79 1.435 14.696 30.90 12.5 2.63 40.8 7.07 17.8 I 691200 192.000 113.9 61.80 1.427 14.696 30.92 12.5 2.63 40.8 7.06 17.8 777600 216.000 111.9 61.83 1.348 14.6 % 31.09 [ 12.5 { 2.63 41.0 6.99 18.0 864000 240.000 110.0 61.86 1.276 14.696 31.24 l 12.5 2.63 41.1 6.92 18.1 950400 264.000 108.8 61.88 1.232 14.696 31.33 i 12.5 2.63 41.2 6.87 I 18.2

CALCUI ATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY: P.D. Harizi REV. Et 62. DATE 2128/96 SHEET M OF M 82. Table 22 - Updated Analysis - Containment Pressure for Core Spray Pump NPSIIR at 5%/ Day Leakage Rate-75'F Seawater Temperature F14.5-10 Lookup Lookup Eq 19 Eq.21 Eq.22 Eq.23 Eq.24 Pa Req'd for Time Time Tp p Pvp Pc Pgas llz lis! NPSilA NPSilA of29 Afargin feet (secs) (hours) (*F) (ibm {ff) (psia) (psia) (feet) (feet] (feet) ffeet) (psia) (feet) l'alues below l'alues below i i l'alues below I'alues below plottedon plottedon l plottedon plotted on Figure 6 Figure 6 Figure 6 Figure 7 0 0 0 U 3 101.84 0.028 124.7 61.o3 1.929 15.732 32.25 i 12.5 2.40 l 42.3 10.02 { 13.3 201.84 E056 126.6 61.60 2.030 15.877 32.37 ' 12.5 2.40 42.5 10.11 13.5 401.84 0.112 128.9 61.56 2.159 16.060 32.52 12.5 2.40 42.6 10.24 13.6 603.62 0.168 135.6 61.44 2.578 16.637 32.95 ! 12.5 2.40 43.1 10.64 i 14.1 ,I 12.5 l 2.40 43.6 11.23 [ 1003.62 0.279 143.F 61.31 3.184 17.435 33.47 14.6 2005.66 0.557 j. 154.2 61.10 4.123 18.616 34.16 { 12.5 2.40 44.3 12.14 { 15.3 j i 2786.91 0.774 159.1 61.01 4.644 19.248 34.47 12.5 2.40,_j 44.6 12.65 15.4 i 3568.16 0.991 162.7 60.94 5.057 19.743 34.70 12.5 2.40 ! 44.8 13.06 15.8 f 20.133 f 12.5 l ( 4349.41 13.38 16.0 1.208 165.4 60.88 5.388 34.88 2.40 45.0 ! 5130.66 I 1.425 167.4 60.85 5.648 20.437 35.00 l 12.5 2.40 45.1 13.63 16.1 i, 5911.91 } 1.642 169.1 60.82 5.870 20.695 35.10 [ 12.5 2.40 45.2 13.85 ,I 16.2 ! 6693.16 1.859 170.7 i 60.77 6.093 20.951 35.21 l 12.5 2.40 45.3 14.07 16.3 ' 10447.91 2.902 174.8 ! 60.68 6.690 21.627 35.44 ' 12.5 2.40 45.5 14.66 j_ 16.5 19633.66 5.454 177.6 i 60.63 7.126 22.080 35.52 12.5 2.40 45.6 i 15.08 i 16.6 28998.41 8.055 176.7 60.65 6.981 21.867 i 35.34 12.5 2.40 45.4 14.94 16.4 38913.91, 10.809 174.1 60.70 6.586 21.360 [ 35.05 12.5 2.40 45.1 14.55 16.I , 49139.91 i 13.650 170.4 60.78 { 6.051 20.687 j 34.67 12.5 2.40 { 44.8 j 14.03 { 15.8 1 59757.16 16.599 I66.4 60.87 5.518 20.009 34.28 12.5 i 2.40 44.4 I3.51 15.4 i 70590.16 19.608 162.6 . 60.95 S ei5 19.395 33.91 12.5 I 2.40 44.0 13.04 15.0 1 81643.66 22.679 159.2 ! 61.01 . 4.655 18.876

33.56 12.5 2.40 1 43.7 12.66 i

14.7 f 43.4 ) 4.332 18.433 ] 33.25 12.35 14.4 12.5 2.40 92860.66 25.795 156.2 61.06 104289.91 28.969 153.5 61.11 j 4 054 18.043 j 32.96 12.5 2.40 j 43.1 j 12.07 14.1 116030.91 32.231 150.9 i 61.17 i 3.802 17.682 1 32.67 1 12.5 l 2.40 1 42.8 11.83 i 13.8

CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY: P.D. Harizi REV. h62 DATE 2/28/96 SHEET ~M OF M 82. Table 22 - Updated Analysis - Containment Pressure for Core Spray Pump NPSIIR at 5%/ Day Lealoge Rate-75'F Seawater Temperature F14.5-10 Lookup Lookup Eq.19 Eq.21 Eq.22 Eq.23 Eq.24 Pa Req'd for Time Time Tp p Pvp Pc Pgas llz lis! NPSilA NPSilA of29 Atargin feet (secs) thours) (*F) (ibmfY) tpsial (psia) (feet) (feet) (feet) (feet) (psia) (feet) 127890.66 35.525 148.4 61.22 3.577 17.352 32.40 12.5 2.40 42.5 11.61 13.5 38.855 146.1 61.26 3.375 17.051 32.15 12.5 2.40 42.2 11.42 13.2 [ 139876.91, 3 151928.91 42.202 144.0 61.31 3.200 16.783 31.90 12.5 2.40 42.0 j 11.25 13.0 i 164009.41 45.558 142.1 61.34 3.052 16.550 31.69 12.5 2.40 41.8 11.10 12.8 j [ 172800 48.000 140.8 61.36 2.951 16.389 31.54 12.5 2.40 41.6 11.00 12.6 259200 72.000 130.3 61.54 2.243 15.167 30.24 12.5 2.40 40.3 10.32 ~ l 1.3 4 328600 91.278 126.0 61.61 } 1.994 14.696 29.69 - 12.5 2.40 39.8 } 10.08 10.8 329600 91.556 125.9 61.61 i 1.991 14.6 % 29.69 12.5 2.40 39.8 l 10.08 10.8 330600 91.833 12*.8 61.61 1.987 14.696 29.70 12.5 2.40 39.8 10.07 10.8 331600 92.III f3: R 61.61 1.985 I4.696 29.71 12.5 2.40 39.8 10.07 10.8 4 33260J 92.389 1;.7 61.62 1.981 14.696 29.72 12.5 2.40 l 39.8 10.07 l 10.8 4 l 333600 92.667 125.7 61.62 1.978 14.696 29.72 12.5 2.40 39.8 10.06 10.8 ! 334600 92.944 125.6 61.62 1.975 14.6 % 29.73 12.5 2.40 39.8 10.06 10.8 I 335600 93.222 125.5 61.62 1.971 14.696 29.74 12.5 2.40 39.8 i 10.06 10.8 l 1.968 1 14.696 29.74 12.5 2.40 39.8 j 10.06 10.8 336600 93.500 125.5 61.62 3 337600 93.778 125.4 ! 61.62 1.965 l 14.696 29.75 12.5 2.40 39.9 10.05 10.9 338600 94.056 125.3 61.62 1.962 l 14.696 29.76 12.5 2.40 39.9 10.05 10.9 339600 94.333 125.3 61.62 1.958 [ 14.6 % 29.77 12.5 2.40 39.9 10.05 10.9 a 340600 94.611 125.2 61.62 1.955 14.696 ! 29.77

12.5

! 2.40 39.9 j 10.04 { 10.9 j 341600 94.889 125.2 61.62 1.952 3 14.696 29.78 12.5 j 2.40 39.9 10.04 10.9 { 95.167 125.1 61.63 I.949 14.696 29.79 12.5 2.40 39.9 10.04 10.9 342600 343600 i 95.444 125.0 61.63 Q 945 14.6 % 29.79 12.5 2.40 39.9 10.03 j 10.9 344600 L 95.722 125.0 61.63 1.942 14.696 29.80 12.5 2.40 39.9 - 10.03 10.9 345600 { %.000 124.9 61.63 1.939 [ 14.696 29.81 12.5 [ 2.40 39.9 j 10.03 10.9 j 432000 120.000 120.6 ! 61.70 1.723 14.696 30.28 ' 12.5 2.40 l 40.4 9.82 11.4 [ 518400 144.000 117.9 j 61.73 1.597 14.6 % 30.56 - 12.5 2.40 40.7 9.70 11.7 i 604800 ! 168.000 115.9 1 61.77 1.510 14.6 % ^ 30.74 12.5 3 2.40 40.8 9.62 l 11.8 j

CALCULATION CHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY: P.D. Harizi REV. b El DATE 212 819 6 SHEET N OF @ 4 8 2. Table 22 - Updated Analysis - Containment Pressure for Core Spray Pump NPSIIR at 5%/ Day Leakage Rate-75*F Seawater Temperature F14.5-10 Lookup lookup Eq.19 Eq.21 Eq.22 Eq.23 Eq.24 P, Reg'd for Time Time Tp p Pvp Pc Pgas llz lis! NPSilil NPSilA of29 Afargin feet (secs) ' (hours) (*F) (thm]Y) (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet) 613440 170.400 115.7 61.77 1.501 14.696 30.76 12.5 2.40 1 40.9 9.61 11.9 622080 172.800 [ t 15.5 61.77 1.493 14.696 30.78 12.5 2.40 j 40.9 j 9.60 11.9 630720 j 175.200 115.3 61.78 1.484 j 14.696 30.80 12.5 j 2.40 j 40.9 _j 9.59 11.9 639360 177.600 115.I 61.78 l.475 14.696 30.82 12.5 2.40 40.9 9.58 11.9 ] ,I I 1.9 648000 180.000 114.9 61.78 1.467 14.6 % 30.83 12.5 2.40 40.9 9.58 9.57 i 12.0 { 656640 i 182.400 114.7 61.78 1.459 14.696 30.85 12.5 2.40 l 41.0 j ( 665280 184.800 114.5 61.79 7 1.451 [ 14.696 30.87 12.5 2.40 1 41.0 9.56 12.0 i 673920 I87.200 1I4.3 61.79 1.443 14.696 30.88 12.5 2.40 j 41.0 9.55 12.0 4 l 682560 189.600 114.1 61.79 i 1.435 14.696 30.90 12.5 2.40 41.0 9.55 12.0 l [ 691200 192.000 113.9 61.80 1.427 14.6 % 30.92 12.5 2.40 41.0 9.54 12.0 l ! 777600 216.000 111.9 61.83 1.348 14.6 % 31.09 12.5 1 2.40 41.2 9.46 l 12.2 l [ 864000 240.000 110.0 61.86 1.276 14.696 31.24 12.5 2.40 41.3 ~9.39 12.3 ! 950400 I 264.000 108.8 61.88 1.232 14.696 31.33 12.5 2.40 41.4 9.35 12.4

CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY: P.D. Harid REV. EtE2 DATE 2/29/96 SHEET W OF M 81 24 180 i! il I ' i I l t 't _t._.... l_L,' 5_i._. g_ l. . 4 I i' 1 l! !1 l i1 l }l l s I u. . _ _ _ _ _._ _ _.p_.L.4 4 .a I ' l l l ~ Suppression Pool 170 22 j 7 t ,I_ _,l,__ __._{ Temperature li [J'. _.__. _,_.t... 3 i.. 4.__ p _ t_ _ _..y... L .) 160 t 20 e Containment Pressure .? -,. t_} -.-- wy +.L a _._m g s / with Design Basis c j, l [] f Leakage @ l %/ Day -- 150 g g 18 ij = f. j .-L++' a r -~~~f-~ Ll # 'i' '{' i =

w. _ _ _.

~.g.4 .._ j L L, -- Margin - 44-1' -+- 'll E l!l i j I

• • 16 140 g

!__!_bf[f .._,. t.g. ( .q _,. 4_.L_ ( r , \\ ll $14 M._.m! 7 Containment t - 130 [l ....i l. __. Pressure with 8_ 8 i

i

_p. ._.._._.4_ 7 _. y _ Contaibment Pressure 4 { i ' ' ;i l \\ ge@p ay - tg t 120 . i j ll l

i j

i E' _2_LL u _ _.. i __ L 1. L L l i . J_.._. _ _ .._Ld'_,_.Itl. g i for CS Pump NPSHR i c ! _ 4_i _i ! 3 ' + i r i i i ti i iji ! l' l i i s n. 4 ilI A 110 10 Jl.

I Conta4rment Pressurey_ t.. _ _ i.._.s> >. ! !

.i + t_.,,3 ___._._4...#._<_. i ;p ..g . _ e _.g i i :! l I! i for RHR Pumn NPSHR ~ + !Ii ij ii;} i ! i i t! i. t ' i 100 g iN i: sii iii . i 4 ii. . - _... _. y._ -. h. $..._.k _. $ _-._._ k.$... _l h _ - L ..l ]_A..i bi-5i l lk

j ; Iljj j

l! llj j j lj jjj Note: Based on 75'F Seawater Temperature 90 6 0.0 0.1 1.0 10.0 100.0 1000.0 Time After Accident (hours) Figure 14.5-XX NPSH Availability for RHR and Core Spray System i Figure 6

CALCULATION SHEET PREPARED BY: F.Doody & Boston Edison CALC. # M662 CHECKED BY: P.D. Harizl REV. Et E2, DATE 2/29196 SHEET OF M 82 i 25 __j __.t_i, _ pp j._ _....i_q'...}'.;: j . _-..; q.j i .. p _.. '.. i,. _ j _. _ _ p!_.l _-l__p! {j j i 1 lii i i i l Iit t;.; ___4__4 l 1 ,t ~.?_ _p41 , _ _.._._1_ L 4 L + i ji f 8 4 i FT' -

1. RHR Pump Margie --

j_. _ _ _ _ p_ 4'. ' _ _._ { _, - 4 3.i T r 1 1 7 T--e-i3 -i-- /_ _ @ IWday Leakage. _ ---~ - ] I

__j.___._]..,l_[ ______l_

4 !Ii I i!!! N !lI l _._{_ __. a._... :' _- i 1 I_t c t + 20 4 f i3,;; i RHR Pump Margin j .~T-ld~'4, ("- J---- {j-- "'Ti]4'" t __ ._ _..._ +_ j ;. _. +~ t1 ..__ p 7___p.s ._q _7_p @ SWday Leakage }__ Q [_ _-.{4.- t- -t ] i 7__._ _J_f_pj.f j_.._. pp. p. 3 j p _ _. + _ _ _ L _._ I t.5I . _ _! _1_.L1.!.la i 4.... n._a.1 JT':' 4 [4 _L t.___- gCS Pump Marg. c i ._ _.i iili ! 17 m

i i l!1I i

I

• I h___} _.j__[ _j-.ill

__!..jj.Lj ___j_... j_ j..p.j j. j __.e _.+. ; ;. 4. a._ _ - q.. id 4 -..q .. _._.._4._ ;. 4 4 y. l. _ _._. _.J . L (;., _ p 4 4_t%.4 } r,o _ _ -... _. ____L_ j{.._ [. {.{p; _. _. j.. ..j...ip 5 hf -__j _ [.-j CS 1 ump Margin -} d--t hl- ,-j-- - 4y;}! } LL- __.l._p. L p t- _.j.. q.._ L p h j .1- ! @ SWday Leakage 1-l - ^- p-+!.7 g I m i t i

e. 10

, d....;Jj ; ; .j _ ._,.4. f_,.. _..,_.__ p_.___ h [. 4.-- j ... __.[__ !....f _4 4._ _ - _! ? 4 e i i i i i i i i i .,l. l __ __ {. 9 t .a.1 y q _ p. .+ . i,. j. ._3 ., j i 4 i , i i 4 i i, j i i l _ _L 4 ___,_t,

g. 4 -______-.[__

1 J_. 4 L i.-,i

i.. _ _.

• __..._m'

_., _. !:;1

i..

l ii.i z c <z a I!ji ! ! ; I I ~ I I _-m.. ,. a 5 - t? -

a.._ _ _ j i ! tLia.

_. 4 .. 2 4,-4 t ! } t? it P ._.._.p._...._ t i - i __.. _. L__._. _ 2_ u u! ___ g_ !.J i.,..;, 2.. q. }... i,., 1 !Jl i .. _! ! Li. !. ! _ Note: Based on Suppression Pool l Temperature Curve Figure 14.5-XX [ _ __ _ _.y ! .-}.} j ! j pt - 4j ._ _ !. J,

4. t i. i 3 i i;ii i

i _1. c 4 . ul J -..---4 .11.4

i rJ JJ i Based on Seawater Temperature of 75'F.

0 t 0.0 0.I 1.0 10.0 100.0 1000.0 Time After Accident (hours) Figure 14.5-XX NPSH Margin for RHR and Core Spray System After a DBA-LOCA Figure 7

I CALCULATION SHEET M ON NUOn PREPARED BY: P.Doody CALC.# M662 CHECKED BY; P.D. Harizi REV. Y161 DATE,2/29t96 SHEET N OF $ 91 This table contains calculated values of NPSHA and NPSHR for RHR and CS pumps as presented on FSAR Figure 14.5 9. Containment leakage is not considered in this calculation (i.e., containment leakage is assumed equal to zero). Table 23 - ECCS Pump NPSHA Over a Range of Pool Temperatures and j Zero Containment Leakage Core Spray Pump Eq.27 Lookup Eq.19 Eq.2/ Eq.22 Suppression Pool 0% Chamber Pool Leakage CS Temperature Tp Pvp Pc Pgas H: Hsl NPSIM NPSHR (*F) (*R) (psia) (ps'a) (feet) (feet) (feet) (feet) (fect) Values below plotted on Figure 6 U L l 130 590.0 2.225 16.153 32.589 12.5 2.40 [ 42.69 29 [~ _ 140 600.0 2.889 17.054 33.236 12.5 2.40 43.34 29 [ 150 610.0 3.721 18.122 33.890 } 12.5 2.40 43.99 29 160 , 620.0, 4.746,,,,,,,{ 19.382 34.555 12.5 2.40 44.65 29 170 630.0 l 5.995 { 20.868 l 35.228 12.5 2.40 45.33 29 , 640.0 } 7.511 { 22.620 [ 35.914, { 46.01 [ 180 12.5 2.40 29 { 24.685 [ 36.620 [ 12.5 l 2.40,,j 46.72 29 J [ 190 l 650.0 }_ 9.340 RHR Pump Eq.27 Lookup Eq.19 Eq.21 Eq.22 Suppression Pool 0% Chamber Pool Leakage RHR Temperature Tp Pvp Pc Pgas H: Hsl NPSIM NPSHR (*F) l'R) (psia) (psia) (feet) (feet) (feet) (feet) (feet) Values l'alues below below plotted on plotted on Figure 6 Figure 6 0 U 130 590.0 2.225 l 16.153 l 32.589 12.5 I 2.63 T 42.46 23 140 [ 600.0 2.889 l 17.054 [ 33.235 i 12.5 2.63 l 43.11 23 150 j, 610.0 } 3.721 18.122 33.890 12.5 2.63 } 43.76 23 160 620.0 4.746 19.382 34.555 12.5 2.63 l 44.42 23 170 '630 0 5.995 20.868 35.228 12.5 2.63 i 45.10 23 180 } 640.0 7.511 22.620 35.914 12.5 2.63 45.78 23 ~ l 650.0, [ 190 9.340 24.685, 36.620 12.5 2.63 46.49 23

m _.. CALCULATION SHEET PREPARED BY: P.Doody & Boston Edison CALC.# M662 CHECKED BY: P.D. Harizi REV. It 67. DATE 2/29/96 SHEET 78 OF M 91-b 50 I $1inimum NPSIIA will5 Zero Containment Leakage as a Function ofINml Temperature i l f--- 45 t t 40 I. O

5. 35

-.7 2 i ii 4 30 ---t-- - NPSHR for Core Spray Pump - - -.--- - --- F - -- - -. tz: ICz 7. 25 - - - - - - ---- - I - 3 l NPSim forIUR Pump H i j i 20 i i 15 - Note Initial Conditions: p __ i Drywell 150 F,80% R.H.,1.3 psig,147,000 ca. ft. Wetwell 80*F,100% R.H.,0 psig,84,000 cu.fl. j 4 i 10 130 140 150 160 170 180 190 Suppression Pool Temperature (*F) Figure 14.5-9 NPSH Availability for RHR and Core Spray System i Figure 8

CALCULATh0N SHEET PREPARED BY: P.D. Harizi $ Boston Edison 3 CALC.# M-662 CHECKED BY: P.J. Dudr REV. E2 DATE 04-APR-97 SHEET 79 OF 92-i Section 5.0 References 1. FSAR Section 4.8, Residual Heat Removal System. 2. FSAR Section 6.4, Core Spray System. 1 Regulatory Guide 1.82 Rev.1, " Water Sources for Long-Term Recirculation Cooling Following a Loss-of-Coolant Accident", U.S. Nuclear Regulatory Commission, November,1985. 4. GE Repon GE-NE-523-A044-0595. 5. Bingham Pump Curve No. 27956 and 27763 (Core Spray Pumps) 6. Bingham Pump Curve No. 28457,28167,28168, and 28169 (RHR Pumps) 7. Crane Technical Paper No. 410, Crane Co., New York, N.Y.,1981, 8. Brater & King, Handbook ofHydraulics, Sixth Edition, McGraw-Hill, New York, NY, 1976. 9. General Electric Report GE-NE-523-A044-0595, "PNPS Decay Heat Removal Capability", May 1995 (SUDDS/RF #95-127 Rev.1). 10 FSAR Section 14.5, Postulated Design Basis Accidents. I 1. General Electric Report NEDC-31852P Rev.1,"PNPS SAFER /GESTR-LOCA Loss-of-Coolant Accident Analysis",1992. 4 12. BECo Calculation N110, Rev. O, "OPL-4 (ECCS Parameters) for SAFER /GESTR-LOCA Analysis for PNPS". 13. Pilgrim ECCS Suction Strainer Data Sheet per Specification M-618. 14. CI A363, Rev. B "ECCS Suction Strainer Installation Branch Pipes #1 & #2" 15. CI A365, Rev. B "ECCS Suction Strainer Installation Branch Pipe #3" 16. M100-51-7," Core Spray System Suction Piping to Core Spray Pump P-215A" 17. M100-54, Rev. E2," Core Spray System Core Spray Line Rerouting Assembly" 18. M100-256-4, Rev. E2, " Core Spray Critical Piping, S.E. Quadrant Below Elev. 23'-0" 19. M100-52-6, Rev. E2," Core Spray System Suction Piping to Core Spray Pump P-215B" 20. M100-265-4, Rev. E2," Core Spray Critical Piping, N.W Quadrant Below Elev. 23'-0" 21. M100-251-4, Rev. El, "RHR Nuclear Piping S.E. Quadrant Below Elev. 23'-0"

~ ~ d'LCO N N SHEET ~ ~ ~ PREPARED BY: P.D. Harizi C ~ ~ $ Boston Edison CALC.# M.4st CHECKED BY: P.J. Dudy i REV. E2 DATE 04-APR-97 SHEET OO OF 81 22. M100-43-7, Rev. El, "RHR Nuclear Piping, S.E. Quadrant Below Elev. 23'-0" 23. M100-47-8, Rev. El, "RHR Nuclear Piping, NW Quadrant Below Elev. 23'-0" 24. M100-266-3, "RHR Nuclear Piping, N.W. Quadrant Below Elev. 23'-0" 1 25. M100-262-4, Rev. El, "RHR Nuclear Piping, N.W. Quadrant Below Elev. 23'-0" 1 26. M100-42-9, Rev. El, "RHR Nuclear Piping S.E. Quadrant Below Elev. 23'-0" 27. M100-252-4, Rev. El, "RHR Nuclear Piping, S.E. Quadrant Below Elev. 23'-0" 28. M100-47-6, Rev. El, "RHR Nuclear Piping, N.W. Quadrant Below Elev. 23'-0" f 29. M100-263-3, Rev. El, "RHR Nuclear Piping, N.W. Quadrant Below Elev. 23'-0" 30. M100-264-6, Rev. El, "RHR Nuclear Piping, N.W. Quadrant Below Elev. 23'-0" j 31. Amendment 9 to License Application Filed June 30,1967 (Docket No. 50-293),03/11/68. 32. Amendment 24 to License Application (Docket No. 50-293). 33. FSAR: a) Table 5.2-1 Primary Containment System Principal Design Parameters and Characteristics b) Section 14.5.3.1.2 Containment Response i c) Section 14.5.3.1.3 Core Standby Cooling System Pump Net Positive Suction Head d) FSAR Figure 14.5-7 Loss of Coolant Accident Suppression Pool Temperature

Response

e) FSAR Table 14.5-1 Loss of Coolant Accident Primary Containment Response Summary 34. Technical Specifications for Pilgrim Nuclear Power Station: a) Minimum water volume per LCO 3.7.A.I.a. b) Maximum water volume per LCO 3.7. A.I.b. c) Maximum suppression pool temperature during normal continuous power operation per LCO 3.7.A.I.c. d) Minimum differential pressure between drywell and suppression chamber per LCO 3.7. A.1.i. e) Allowable suppression chamber water level range per LCO 3.7.A.I.m. f) Maximum containment leakage rate per surveillance requirement 4.7. A.2.a.

~.' CAI.CULANON SH5Ei kREYAE5D BE; P.b.Ef5I $ Boston Edison CALC.0 M462 CHECKED BY: P.J. Dnedy REV. E2 DATE 04-APR47 ~ SHEET @i OF B2 35. BECo Calculation S&SA91," Containment and Decay Heat Removal Analysis Inputs", Rev.E0 1 a) Section 5.2 Calculation ofInitial Suppression Chamber Free Airspace Volume b) Calculation ofInitial Suppression Chamber Pool Volume at HWL per TS 3.7.A.1.m. 36. GE Specification, 22A5756, Containment Data, Rev. 3, February 1982. 37. General Electric Report GE-NE-T23-00732-01," Containment Heat Removal Analysis", March 1996, (SUDDS/RF96-05). 38. SSW Analysis Transmittal for Pilgrim Nuclear Power Station, GE letter from E.G. Thacker to F. Mogolesko, February 9,1996 with Attachments, (SUDDS/RF96-05). 39. BECo Calculation M-667 Rev. I "RHR System Hydraulic Analysis" 40. BECo Calculation M-734 Rev. 0 "RHR and Core Spray Pump Suction Strainer Debris Head Loss NPSH Evaluation" L i Section 6.0 Attachments i = Independent Verification Statement Record (1 page) j i I i I l i l l l i I l

CALC MM2 REY, E2 ATTACHMEMT i Criculition-IndIpandInt V rification Stat:m:nt R cord kg, 82 of $2, Calculation # M-662, Revision # E2 has been independently verified by th'e following method (s), as noted below: Mark each item yes, no or not applicable (N/A) and initial each item checked by you. Design Review Q including verification that: kODesign inputs were correctly selected and included in the calculation. bf0 Assumptions are adequately described and are reasonable. Drd)lnput or assumptions requiring confirmation are identified, and if any exist, the calculation has been identified as " Preliminary" and a " Finalization Due Date" has been specified. . BE0 Design requirements from applicable codes, standards and regulatory documents are identified and reflected in the design. . bEO Applicable construction and operating experience was considered in the design. . bEo The calculation number has been properly obtained and entered. I

• be~0 An appropriate design method or computer code was used.

140 A mathematical check has been performed. . ggyThe output is reasonable compared to the input. Altemate Calculation O including verification of asterisked items noted above. The altemate calculation ( pages)is attached. Qualification Testing O for design feature including verification of asterisked items noted above and the following: The test was performed in accordance with written test procedures. Most adverse design conditions were used in the test. Scaling laws were established and verified and error analyses were performed, if applicable. Test acceptance criteria were clearly related to the design calculation. Test results (documented in ) were reviewed by the calculation Preparer or other cognizant engineer, independent Reviewer Comments: No 8!97 /S/ w Independent Reviewer ' /date ~ Preparer concurrence with /S/ b. M ' 4 9 7 findings and comment resolution Preparer or Otfier Cognizant Engineer Note: Exhibit 3.06-8 (Sheet 3 of 3) may to used for additional comments by IV as a part of the Independent Verification for calculations. cALCIVsR. ooc NEs0 3 06 Rev. 7 Page 1 of 1

j e 4 Response to NRC staff questions regarding " User Defmed Inputs for ANS 5.1-1979 Decay Heat - Reanalysis Using 2e Uncertainty" which was submitted for resiew as to BECo letter 2.97.035 dated May 14,1997. 4 [ 1. . With regard to fuel enrichment, why was 4.2% selected rather than the previous value of 3.781% ? ) he highest GE12 lattice enrichment was selected. 2. What is the basis for the isotopic fission product fractions ? t he isotopic fission fractions are taken from the General Eiectric lattice physics code for the selected GE12 lattice. The fission fractions are typical for BWRs at end-of-cycle, when much of the power generated is from plutonium (Pu). 3. The U235 fraction is seems low. Please comment on this obsen>ation. 4 As mentioned in the previous response, the end of cycle fission fraction for a BWR is heavily weighted to plutoniunt i 4. What is the basis for the selected R factor of 0.6 ? This value is calculated by the lattice physics code for the selected lattice. 5. What is the basis for the selected Si factor (G factor multiplier) of 0.856 ? This value is calculated by the lattice physics code for the selected lattice. 6. What is the basis for the exposure length of 32,500 MWD / ton ? The 32,500 MWD / ton value is based on the most recent end of cycle core average exposure for a Pilgrim Nuclear Power Station GE12 fuel cycle. p - n e

o l List of Attendees EiHDit Affiliation 1 Alan Wang NRC Kerri Kavanaugh NRC Jack Dawson NRC Jack Kudrick NRC j John Knox NRC Jeff Keene BEco Pat Doody BEco Phil Harizi BEco i 3 l 1 1 e l I 1 a}}