IR 05000324/1988005
| ML20151P737 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 04/14/1988 |
| From: | Verrelli D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Utley E CAROLINA POWER & LIGHT CO. |
| References | |
| NUDOCS 8804260242 | |
| Download: ML20151P737 (8) | |
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APR 24 pggy Docket Nos. 50-325, 50-324 License Nos. DPR-71. DPR-62 Carolina Power and Light Company t. ATTN : Mr. E. E. Utley Senior Executive Vice President Power Supply and Engineering and Construction P. 0.= Box 1551 Raleigh, NC 27602 Gentlemen:
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SUBJECT: NRC INSPECTION REPORT NOS. 50-325/88-05 AND 50-324/88-05 This refers to the Nuclear Regulatory Commission inspection conducted at your Brunswick facility by William H. Ruland on February 1-29, 1988.
Due to an administrative oversight, Enclosure 2 (Technical Specification Interpretation Request Form 84-06, Rev. 4) was inadvertently omitted during the submittal of the subject inspection report.
Accordingly, Enclosure 2 and a revised page 2 of the subject inspection report's March 30, 1988 transmittal letter have been enclosed.
Should you have any questions concerning this letter, please contact us.
Sincerely, ogictNAL SIGNto tY DAylD 1A.VU!MlU David M. Verrelli, Chief Reactor Projects Branch 1 Division of Reactor Projects Enclosures:
1.
NRC Inspection Report Transmittal I
Letter - page 2 2.
Technical Specification
Interpretation Request Form 84-06, Rev. 4 - Enclosure 2 cc w/encis:
- . W. Howe Vice President Brunswick Nuclear Project L&. R. Dietz, Plant General Manager bec w/encis:
WRC Resident Inspector DRS Technical Assistant Document Control Desk State of North Carolina R
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BCarroll:cdg PFredr ekson 04/6/88 04/p/88 8804260242 eso4g4
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.. Corrected Copy.
ENCLOSURE 1
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Carolina Power and Light Company
Enclosures:
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NRC Inspection Report 2.
Technical Specification Interpretation Request Form cc w/encis:
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P. W. Howe, Vice President i
Brunswick Nuclear Project T
C. R. Dietz, Plant General Manger
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g[ r ENCLOSURE 2
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ATTACHMENT 1 TECHNICAL SPED FICATION INTERPRETATION RE0tTEST FORM
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1. Serial No. 8 *.-06 (Rev. 4)
2. Technical Specification Reference:
3.7.1.2 3. Technical Specification Page No.: 3/4 7.2 4 Subject:_ Service k'ater System 5. Unit (s) Affected:
S S EP--
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6. Description of Request (concise detailed description of requested interpretation or problem area)t_ k'ha t se rvic e wa t'er ptmps mu st be OPERABLE in order to satisfv.the tortuirements of this specifteation?
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7. Originator:
R. M. Poulk
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Date; 3/12/84 b'
8. Reviewed By:
K. E. Enzor Date 3/12/84 9. Interpretation:
Attachment 8 'l and la Provide the requirements for service water pumps and required ACTIONS. Attachment 2 provides a listing of pump combinations. Attachment 3 provides the basis for this interpretation.
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l 10) Technical Specification Cha a equired:
Yes_sS noo9 No 11) Prepared Bv:
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f!/2/AA r-Data 12) Concurrence:
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Da t e Director - Regup' tory Compliance
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13) Approved:___
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PNSC \\
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M O-RCI-02.3 Rev. 2 Page 6 of 7
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ATTACRMENT 1
SERVICE. HATER _. SYSTEM _ _.0EERATI0lLHI.TB. 0BE..DR. BQTE.URITS The service water system nuclear header shall be OPERABLE with at least the following four OPERABLE service water pumpe:
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Two OPERABLE nuclear service water pumps per' site, capable of supplying service water to the diesel generators, each powered from a different division; and in addition.
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Two OPERABLE Unit' 1(2) service water pumps, conventional and/or nuclear, each powered frem a~ different division and capableofsupplyingtheservicewater{nuclearheader.
ACTION:
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A.
In OPERATIONAL CONDITION 1,2 or 3 1.
With only one OPERABLE nuclear service water pump per site capable of sapplying service water to the diesel generators, restore at least two nuclear service water pumps per site powered from different divisions to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT
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SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
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2.
With only one OPERABLE Unit 1(2) service water pump capable of supplying the service water nuclear header (in addition to the two nuclear' service water pumps availab~le per site), restore at least two service water pumps powered from different divisione. to OPERABLE status :
within 7 days or be in HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and COLD SHUTDOWN within the followi'ng 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
B.
In OPERATIONAL CONDITION 4 or 5 1.
With only one OPERABLE nuclear service water pump per site capable of supplying service water to the diesel generators, restore at least two nuclear service water pumps per site powered from different divisions to OPERABLE status within 7 days or declare the diasel generators inoperable.
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With only one OPERABLE Unit 1(2) service water pump capable of supplying the servico water nuclear header (in addition to the two nuclear service water pumps available per site) restore at least two service water pumps (s powered from different divisions to OPERABLE status within 7 days or declare the Core Spray System and the LPCI System inoperable.
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See ACTION statements b.2 and b.3 in Specification 3.7., _ - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
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ATTACHMENT 1A
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SERVICE WATE.R SYSTE.M
_SBUTDOWN,OF BOTH UNITS The service water system nuclear header shall be OPERABLE with at
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least the following three OPERABLE service water pumps:
1.
Two 0:8ERABLE nuclear service water pumps per site, capable of supplying service water to the diesel generators; and in addition.
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One OPERABLE Unit 1(2) service water pump, conventional or nuclear, capable of supplying the service water nuclear header.
AP P L.I C A B I L I T Y :
OPERATIONAL CONDITIONS 4 AND 5
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ACTION:
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With only one OPERABLE nuclear service water pump per site capable of supplying service water to the diesel generators, restore at least two nuclear service water pumps per site to OPERABLE status within 7 days or
,As declare the diesel generators inoperable.
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2.
With no OPERABLE Unit 1(2) service water pump capable of supplying the service water nuclear header (in addition to the two nuclear service water pumps per site), restore at least one servict 9 ster pump to OPERABLE status within 7 days or declare the Core Spray System and the LPCI System inoperable.
3.
See ACTION statements b.2 and b.3 in Specification 3.7.1.2
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TABLE 1
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w Division I (El, E3)
Division II (E2, E4)
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1A NSW 13 NSW 2A NSW 25 NSW 15 CSW 1A CSW 2A CSW 1C CSW 2C CSW 25 CSW Nuclear Service Water Pump Co=bination
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1A & 13
2)
1A & 2B
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2A & 13
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2A & 2B
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Service Water Pu=p Combinations to Nu'elear Header
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U-1 U-2 18 CSW & 1A CSV 25 NSW & 2A NSW 15 CSV & 1C CSW 2B'NSW &'2A CSW 25 NSW.6 2C C3W
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23 CSW '& 2C CSV s,s 25 CSW & 2A CSW,
2B CSW & 2A NSW If Using lA NSW & 25 NSW U-1 U-2
7 3 NSW & 1B CSW 2A NSW & 2B CSW 1A CSV & 15 CSW 2B CSW & 2A CSW 1C'CSW & 15 CSW 23 CSW & 2C CSW If Using 2A NSW & IB NSW U-1 U-2
1A NSW & 1A CSW 25 NSW & 2A CSW 1A NSW & 1C CSW 23 NSW & 2C CSW
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1B CSV & 1A CSV 25 CSW & 2A CSW 15 CS*w~ 5 1C CSW 2B CSW & 2C CSW If using 2A NSW & 2B NSW U-1 U-2
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1A NSW & 15 NSW 2A CSW & 2B CSV 1A NSW & 1A CSW 2C CSW & 23 CSW
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1A NSW & 1C CSV
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15 NSW & 15 CSW
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18 CSW & 1A CSW l
18 CSV & 1C CSW
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I ATTACHMENT 2 i
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User's cuide for Table 1
1)- To ensure that 2 NSW pumps per site f rom dif f erent divisions are operable;
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select one of the combinations of OPERABLE pumps shown under "Nuclear
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Service Water Pump Combination" on Table 1.
Failure to find an operable
combination places the plant into an active LCO.
2)
To ensure that 2 SW pumps per unit are operable to the Nuclear Header; look f,
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under "Service Water Pump Combinations to Nuclear Header" on Table i for the combination selected in 1.
Ensure at least one tombination of
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operable pumps are as shown for each unit... Repeat step 1 until an operable (
combination is found for both 1 and 2.
Failure.j'o find any operable i
combination places the unit into an active LCO. r
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wd ATTACHMENT 3
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B,ASES On a LOCA with a loss of off-site power, service water must be made immediately available to the diesel generators for cooling.
Due to the design which allows either units's service water system to supply all the diesels, any combination of two nuclear service water pumps is* acceptable, provided that they are powered
from different divisions.
The requirement to have each pump fed
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from a different division assures separatibn criteria as both units division I cables run together and both unit's division II cables run together.
Analysis has shown that one pump can supply all four diesels; however, two pumps are required OPERABLE to meet single failure criteria.
Approximately 10 minutes following a LOCA with a loss of off-site power, additional cooling loads are analyzed as being available.
These loads include RHR and CS pump and room coolers in addition to'RHRSW.
To meet these additional loads (in excess of the diesels), one additional pump on the affected unit must be placed in service (manual starting is analyzed).
In order to assure single failure and separation criteria are met, two service water
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pumps powered from different divisions must be OPERABLE per unit in addition to nuclear service water pumps described earlier.
With both units in OPERATIONAL MODES 4 or 5 Technical Specifications require that one 4160. volt emergency bus be OPERABLE (3.8.2.2).
The electrical power distribution system is such that, in the case of one of the two buses per unit, only.one service water pump would be available to supply the service water nuclear header (in addition to the two pumps supplying the diesel generators); therefore, the requirement to have only one pump for the nuclear header is established.
The ACTION requirements'for the loss of the only req'uired pump is established at 7 days in conformance with the ACTION allowed with one of the two service water pumps which supply the diesel generators out of service.
This is consistent with Appendix R criteria for a unit in OPERATIONAL MODES 4 or 5 in that only one service water pump *per unit must be isolated from fire hazard to insure operability.
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