ML17229A178
| ML17229A178 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 04/10/1996 |
| From: | FLORIDA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML17229A176 | List: |
| References | |
| PTN-BFJM-96-005, PTN-BFJM-96-005-R00, PTN-BFJM-96-5, PTN-BFJM-96-5-R, NUDOCS 9612260324 | |
| Download: ML17229A178 (70) | |
Text
Page i
CALCULATION COVER SHEET Calcul ation No:
PTN-BFJH-96-005
Title:
Fire Barrier Am acit Correction Factors
- Extra olation of Test Results for 3 Hour Barrier No.
Original Issue Descri tion By
!l(~
Date Chkd Date Appr Date REVIS IONS Form 82A, Rev 6/94 9hi2260324 9hi2i9 PDR ADQCK 05000335 P
Page ii LIST OF EFFECTIVE PAGES Calculation No.
PTN-BFJM-96-005 Rev.
Title Fire Barrier Am acit Correction Factors
- Extra olation of Test Results for 3 Hour Barrier Pa e
1ll 111 1
2 3
4 5
6 7
8 9
1,2 3
4 5
5 5
5 5
6 Section Rev.
0 0
0 0
0 0
0 0
00' 0
Pa e
Section Rev.
A1 A2 A3 A4 15 Pages) 1 Page
)
3 Pages) 2 Pages)
Form 82B, Rev 6/94
Page iii TABLE OF CONTENTS CALCULATION NUMBER PTN-BFJM-96-005 REV.
SECTION 1.0 2.0 3.0 4.0 5.0 6.0 TITLE Cover Sheet List of Effective Pages Table of Contents Purpose/Scope References Methodology Assumptions/Bases Calculation Results PAGES ATTACH NO.
TITLE PAGES Omega Point Lab Test Report kl2340-
.94583,95165,95168,95246, "Electrical Test to'etermine the Ampacity Derating of a Protective Envelope for Class 1E Electrical Conduits" ANSI C80. 1-1990 Table 2 - "Dimensions and Weights of Rigid Steel Conduits" Ebasco Calculation EC-096, "Cable Ampacity And Voltage Drop Calculation" Addendum B Pages 2,3,4.
15 TSI Inc., Thermolag 330-1 Thermal Properties 2
Form 82C, Rev 6/94
CALCULATION SHEET REV' SHEET NO.
1.0 Purpose/Scope GL 92-08 (Ref. 2. 1) has required FPL to review the ampacity correction factors (ACF) used for raceway with fire barriers.
The ampacity correction will be based on testing performed at Omega Point Laboratories for Texas Utilities Comanche Peak Plant.
The testing included conduit and cable tray with a 1 Hour fire barrier installed.
This calculation will use heat transfer calculations to extrapolate the results from the 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> barrier tests to three hour rated barriers used at the Turkey Point and St. Lucie Plants.
2.0 References
- 2. 1 GL-92-08, "Thermo-Lag 330-1 Fire Barriers" Dated December 17, 1992.
2.2 Omega Point Lab Test Report ¹ 12340-94583,95165,95168,95246, "Electrical Test to Determine the Ampacity Derating of a Protective Envelope for Class lE Electrical Conduits" (Included as Attachment 1) 2.3 ASHRAE Handbook, 1991 Fundamentals 2.4 NRC Safety Evaluation of Ampacity Issues Related to Thermo-Lag Fire Barriers at Comanche Peak Steam Electric Station, Unit 2 (TAC No. H8599)
Dated June 14, 1995.
ANSI C80. 1-1990, Table 2
"Dimensions and Weights of Rigid Steel Conduits"
( Included as Attachment 2) 2.6 Ebasco Calculation EC-096, "Cable Ampacity And Voltage Drop Calculation"
( Included as )
2.7.
TSI Inc., Thermolag 330-1 Thermal Properties (Included as Attachment 4)
Form 83, Rev 6/94
CALCULATION SHEET I;
CALCULATION NO.
PTN-BFJM-96-005 REV 0
SHEET NO.
3.0 Methodology
THERI'AO-LAG CONDUIT CABLE Ri Rt Rs Rg Heat transfer will be calculated per foot of raceway length in accordance with the following relationship:
q (Tc-Ta) / (Ri + Rg + Rt + Rs) q Tc Ta Ri Rg Rt Rs Rate of heat transfer from raceway Temperature of conductor (90'C/194'F)
Ambient temperature (40'C/104'F)
Thermal resistance of all items within the raceway including the raceway itself Thermal resistance of the air gap between the raceway and the fire barrier material Thermal resistance of the fire barrier material Thermal resistance at the surface of the protected or unprotected raceway The heat transferred from the raceway under steady state conditions is essentially equal to the I'R losses within the conductors.
These heat values can be determined from the test data based on the measured current and size of conductor used.
Tc and Ta are fixed test parameters with values which are listed above.
Form 83, Rev 6/94
CALCULATION SHEET 0
CALCULATION NO.
PTN-BFJH-96-005 REV 0
SHEET NO.
The thermal resistance values will be determined based on test data and physical properties as follows:
Ri will be calculated from the test data for raceway without fire barrier Rg will be calculated from the test data for raceway with a I hour barrier Rt will be calculated based on the known thermal conductivity (k) for The~mn-Lag Rs will be based un known physical properties considering convection arid radiation heat transfer.
After all of the thermal resistance values have been established, the heat transferred can be calculated for the raceway with the three hour barrier.
Since the heat is a function of the current squared, the ampacity correction factor (ACF) will be determined by the following relationship.
ACF I/I V(q,~q where the subscript p refers to the protected raceway 4.2 4.3 4.4 4.5 4.6 Assumptions/Bases The effect of inductive losses in the raceway and cable sheath will be negligible with respect to applying the test data to the Turkey Point and St.
Lucie configurations, Surface emittance for cable,
- raceway, and Thermo-Lag will be assumed to be equal to 0.9.
Note that a high emittance value will reduce the thermal resistance at the surface having an overall effect of maximizing the ampacity de-rating.
Heat transfer through the sides of cable tray will be assumed to be zero.
This will reduce the heat transfer equation for tray to a one dimensional heat transfer equation.
As the tested cable tray is relatively wide,24", this is expected to be a good approximation for all cable tray.
One hour Thermo-Lag fire barrier will be assumed to be at the minimum thickness of 1/2" (I/4" for overlay where used).
This thickness will provide a conservative value when calculating the R value for the gap between the raceway and the barrier.
Three hour Thermo-Lag fire barrier will be assumed to be at the nominal thickness in accordance with the manufacture's tolerance, l-l/4 inches.
This thickness'will provide a
conservative result when calculating the heat transferred with the three hour barrier, as the value of the initial I hour wrap was minimized.
It was judged to be unrealistically conservative to go to the maximum thickness tolerance of 1.5 inches.
Raceway is made of rigid steel, magnetic
- material, which is typical for power plant installations.
Banked conduit which is banked in a single plane can be assumed to be equivalent to cable tray.
Both configurations involve a cable mass arranged in a shallow rectangular section.
Both configurations involve an air gap between the cables and the fire barrier material.
Form 83, Rev 6.'94
CALCULATION SHEET CALCULATION NO.
PTN-BFJN-96-005 REV 0
SHEET NO.
4 4.8 The thermal resistance values for all items within the raceway and for the gap between the conduit and the Thermolag material will be assumed to remain constant as additional thickness of Thermolag is installed.
Considering that the geometry of these areas is not
- changed, this approximation is reasonable for the purpose of extrapolating the thermal resistance from raceway with 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> wrap to raceway with 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> wrap.
5.0 Calculation
- 5. 1 Determination of test heat loads Test heat loss in watts is calculated by the following equation:
q IRN q
Heat Per Foot I
Test Current R
Cable Resistance Per Foot N
Number of Conductors Raceway (Conductor)
Size 3/4 (I-3C/0'10) 3/4 Wrapped Test
- Current, 39.6'5.9
.001404 6.61 5.43 22.6 18.5 Resistance Number of Heat/Ft Heat/Ft Per
- Foot, Conductors Watts
~BTU Hr 2
(I-3C/86) 2 Wrapped 64.5 60.2
.000555 3
6.93 6.03 23.7 20.6 5
(4-750 kCMil) 571 5 Wrapped 510
.0000224 4
29.21 23.30 99.7 79.5 Tray (126 -3C/86)
Tray Wrapped 23.1 15.8
.000555 378 111.9 52.4 382.1 178.7
- 1. Current is from Reference 2.2
- 2. Resistance per foot is from Ref. 2.6
- 3. Hultiply Watts by 3.413 to obtain BTU/Hr Form 83, Rev 6'94
CALCULATION SHEET CALCULATION NO.
PTN-BFJH-96-005 REV 0
SHEET NO.
5.2 Determination of Thermo-Lag R values (R,)
For heat transfer through Thermo-Lag cylinder R
Ln(RJR;)/2vkL R.
Outside Radius R;
Inside Radius k-Thermal Conductivity
- 0. 1 BTU/Hr-FT-'F L
Length 1 Ft.
(Per Foot)
(Ref. 2.3,Page 2.3)
(Ref.
2.7)
For heat transfer through Thermo-Lag sheet (Ref. 2.7)
R L/kA (Ref. 2'.3,Page 2.3)
L Thickness k
Thermal Conductivity
- 0. 1 BTU/Hr-FT-'F A
Surface Area N
A full tabulation of the Thermo-Lag R values for the various sizes is included in the spreadsheet below.
5.3 Determination of surface R values (R,)
The surface resistance will consider free convection and radiation heat transfer.
For free convection q, hAKT q, heat transferred by convection h - convection heat transfer coefficient For horizontal cylinders in air h
.27(hT/L)'"
(Ref. 2.3,Page
- 2. 12)
A - Surface Area L - Characteristic length in feet (diameter or width) q,
.27(4T/L)"MT For radiation q,
ohe(T, -T, )
q, Heat transferred by radiation 0
1.714X10 BTU/Hr-Ft -R', Boltzmann Constant A
Surface area Surface Emittance
.9 T
Absolute Temperature, Rankine q, -1.714X10'(.9) A(T,'-T,')
(Ref. 2.3,Page
- 2. 11)
(Assumption 4. 1)
Form 83, Rev 6/94
CALCULATION SHEET CALCULATION NO.
PTN-BFJM-96-005 REV 0
SHEET NO.
6 For total heat transferred from the surface q, - q, + q, q, ~.27(QT/L)'T +
1.714X10 (.9)A(T, -T2 )
q, = [.27(bT/L)'
1.714X10 (.9)(T, -T, )/QT]AbT GT/q, R,
1/ t,.27(GT/L) " +
1.714X10'(.9.) (T,'-T,')/LT]A 5.4 Calculation of ACF The ACF is calculated using a spreadsheet in accordance with the methodology described above.
A description of the spreadsheet follows:
OD/W This is an input value of the conduit outside diameter or cable tray width.
Conduit diameters are obtained from Reference 2.5.
TH This value is the thermolag thickness.
For each raceway size a
thickness representing no wrap, 1 Hr wrap, and 3 Hr wrap is entered.
ODT This is the outside diameter of the raceway with any wrap calculated from the 00 and TH.
For cable tray OD is not calculated because it will always be equal to W,
A The outer surface heat transfer area.
Note that for raceway both the top and bottom areas are included.
Area is calculated on the basis of a one foot length of raceway.
Ri Inside thermal resistance as defined above.
The value is calculated from the test data with no wrap in accordance with the following formula.
The Ri value calculated is then used for the cases with 1 Hr and 3 Hr wrap.
Note that there is no Rg and Rt for this case.
Ri hT/q - Rs, Where hT = 90'F (Temp drop from conductor surface to ambient)
Rg Gap thermal resistance as defined above.
The value is calculated from the test data with 1 Hr wrap in accordance with the following formula.
The Rg value calculated is then used for the case with 3 Hr wrap.
Rg bT/q - (Ri + Rt + Rs),
Where hT - 90'F Rt Thermo-Lag thermal resistance.
The value is calculated in accordance with the following equations which were developed above.
Conduit Rt Ln(ODT/OD)/2vk, k. 1 (Ref. 2.7)
Tray Rt TH/kA, K.1 Form 83, Rev 6/94 r
CALCULATION SHEET CALCULATION NO.
PTN-BFJH-96-005 REV 0
,SHEET NO.
7 Rs Surface thermal resistance is calculated in accordance with the following equations which were developed above.
Note that the hT in this equation is between the surface and ambient and the T4 values must be in 'R.
The ambient temperature used is 104'F/564'R.
Rs 1/[.27((Ts-104)/ODT)" +
1.714X10'.9)((Ts +460)'-564')/(Ts-104)]A Ts Surface temperature of Thermo-Lag nr bare conduit.
The value is determined by iteration until q
q'.
q Heat transferred
- For no wrap or 1 Hr wrap the value from the test data is used.
for 3 Hr wrap calculate as follows:
q hT/(Ri + Rg + Rt +-Rs),
Where hT 90'F q'eat transferred from the surface
- Calculate heat transferred from the surface as follows:
q - hT/Rs, Where hT Ts - 104'F From continuity', the heat transferred from the surface is the same as the total heat transferred.
In order to solve the various cases, Ts is adjusted by iteration until ACF Ampacity correction factor calculated by the following equation which was developed above.
ACF v (q,~q Form 83, Rev 6/94
PTN-BFJM-96-005 Revision 0 Page8of 9
RACEWAYHEAT TRANSFER ANDAMPACITYDE-RATING CONDUIT OD IN TH IN ODT IN A
Ri Rg Rt Rs Ts SQFT BTU/HR-F BTU/HR-F BTU/HR-F BTU/HR-F F
BTU/H BTU/H ACF 1.05 0
1.05 0.2749 2.474 1.5088 1.05 0.75 2.55 0.6676 2.474 0.201
. 1.4122 0.7782 1.05 1.25 3.55-0.9294 2.474 0.201 1.9388 0.5996 138.10 118.40 114.35 22.60-22.60 NIA 18.50 18.50 0.905 17.27 17.27 0.874 2.375 0
2.375 0.6218 2.997 0.8006 2.375 0.75 3.875 1.0145 2.997 0.044 0.7791 0.5484 2.375 1.25 4.875 1.2763 2.997 0.044 1.1445 0.4564 122.97 115.30 1'12.85 23.70 23.70 N/A 20.60 20.60 0.932 19.39 19.39 0.904 5.563 1E-19 5.563 1.4564 0.560 0.3428 5.563 0.5 6.563 1.7182 0.560 0.000 0.2631 0.3094 5.563 1.25 8.063 2.1109 0.560 0.000 0.5907 0.2686 138.18 128.60 121.04 99.70,99.70 NIA 79.50 79.50 0.893 63.43 63.43 0.798 CABLE TRAYI BANKEDCONDUIT W
TH A
Ri Rg Rt Rs Ts IN IN SQFT BTU/HR-F BTU/HR-F BTU/HR-F BTU/HR-F F
BTU/H BTU!H ACF 24 0
24 0.500 24 1.25 4
c 4
4 0.102 0.1335 0.102 0.150 0.1042 0.147 0.102 0.150 0.2604 0.1513 155.00 130.27 124.50 382.10 382.10 N/A 178.70 I78.70 0.684 135.50 135.50 0.595
0
CALCULATION SHEET CALCULATION NO.
PTN-BFJH-96-005 6.0 Results REV 0
SHEET NO.
The ampacity correction factors for I Hr Thermo-Lag from testing and 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> Thermo-Lag extrapolated by calculation are as follows.
Item Conduit 1 Hr
.89 ACF 3 Hr
.80 Tray (Banked Conduit)
.69
.60 Form 83, Rev 6:94
PTN-BFJH-96-005 ATTACHMENT I
- REVISION, 0
PAGE I
of 15 AMPACITYDEBATING OF FlRE PROTECTED CABLES Project No. 12343-94583,95165-95168,95246 ELECTRICALTEST TO DETERMINE THE AMPACITYDERATING OF APROTECTIVE ENVELOPE FOR CLASS 1E ELECTRICAL CIRCUITS March 19, 1993 Prepared For:
TU Electric COMQICHE PEAK STEAM ELECTRIC STATION P.O. Box 1002 Glen Rose, Texas 76043-1002 p ppcp)ypD OCT 2 0 f993
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Report No. 12340-94583,95165-95168/5246 Texas Utilities Electric
,PTN-BFJH-96-005 ATTACHHENT 1
REVISION 0
PAGE 2
of 15 Three conduit assemblies, two air drop assemblies, and one cable tray assembly, clad with Thermo-Lag materials as described herein,'ere evaluated in accordance with the Texas Utilities Electric TEST PLAN, Rev. 4, yielding the following ampacity derating values:
TEST ITEM 3C/¹10 in 3/4" Conduit 3C/¹6 in 2" Conduit 3C/¹6 in AirDrop 24" Cable Tra 750 kCMilin AirDro 4/C 750 kCMilin 5" Conduit)
PERCENT DERATING 9.34 6.67 31.6 31.8 10.7 The details, procedures and observations reported herein are correct and true within the limits of sound engineering practice.
All specimens and test sample assemblies were produced, installed and tested under the surveillance of either Texas Utilities'r the testing laboratory's Quality Assurance Program.
This report describes the analysis of distinct assemblies and includes descriptions of the test procedure followed, the assemblies tested, and all results obtained.
All test data are on Gle and remain available for review'by authorized persons.
Herbert W Stansberry H Project Manager Date Constance A. Humphrey Manager, QA Dept.
Date Deggary N. Priest President Date
Report, Ne. 12340-94583,95165-95168@5246 Texas Utilities Electric PTN-BFJH-96-005 ATTACHMENT 1
REVIS10N 0
PAGE 3
of 15 TABLEOF CONTENTS INTRODUCTION TEST PROCEDURE Test Enclosure Thermo couples Data Acquisition system Current Control System Final Current Measurements TEST ASSEMBLY Test Items (General)
Test Items Electrical Cables Thermocouple Placement Thermo-Lag Installation Highlights TEST RESULTS APPENDICES Appendix A: CONSTRUCTION DRAWINGS Appendix B: TEST PLAN Appendix C: THERMOCOUPLE LOCATIONS Appendix D: TABULA,TEST DATA Appendix E: QUALITYASSURANCE Appendix F:
PHOTOGRAPHS Appendix G: THERMO-LAG INSTALLATION Last Page ofDocument 1
1 2
2 2
3 4
5 7
8 8
10
]3 16 25 32 382 781 DETAILS 802 8%
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Report No. 12340-94583,95165-95168/5246 Texas Utilities Electric PTN-BFJH-96-005 ATTACHMENT I
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PAGE 4
of 15 A Fire Protective Envelope protects electrical components from the eQ'ects of fire.
In doing sc, it vriQ reduce the inQow of energy into the system and maintain the internal temperature below maximum limits. These limits will ensure that the cable systems remain functional during a fire, and allow operators to maintain control of systems required for fire safe shutdown.
The addition of a Are. rotective Envelope on a cable system willnot only protect the contained cable from elevated temperatures associated with a fire, but will impede the heat dissipation associated with cable operation.
The evaluation described herein will yield aa accurate and realistic value for the ampacity deratiag of cables when a Fire Protective Envelope is iastaQed on the cable system.
This entire test prolpmn was performed in accordance with Texas Utilities Electric TEST PLAN, Rev. 4, which has been included in Appendix B.
The specific details ofthis project wiQ be found in that document.
TEAENCLOSURE The ampacity test enclosure was constructed of steel stud waQs and ceiling with a minunum of I in. of polystyrene insulatioa liaing the interior of the room.
The overaQ dimensions of the test enclosure were 20 ft. x 18 &. x 8 ft. An entry door was provided in oae wall and an observation window was placed in an adjacent waQ. The waQ with the observation window was made to be removable to facilitate easier location oftest articles. Four 1.5 kW heaters were disposed about the room to regu1ate ambient conditions.
Two of the heaters were vaxiable from outside of the test enclosure via connection to standard laboratory variable transformers.
Located directly behind each heater was a 24 in. box fan to gently stir the air and more evenly distribute the heat.
A total of nine thermocouples were suspended from the ceiling and positioned ia the horizontal plane of the test items, 12 in.
away Epsom various test items to monitor the ambient room temperatures.
Two stanchions were erected to support the test articles.
Each staachion consisted of a length of 2 in. square steel tubing supported at several points by an A-frame leg.
A length of2 in. x 4 in. wood stud was aQixed to the top surface of each stanchion.
In the case of all but the 5 ia. conduit, the test article with the fire protective system installed was tested first. Once the system had attained. equilibrium and aQ final measurements h'ad been tatea, the fire protective barrier was removed from the system (in the case of the air drop assemblies and the cable tray
Report No. 12340-94583,95165-95168/5246 Texas Utilities Electric PTN-BFJH-96-005 ATTACHHENT I
REV IS IQN 0
PAGE 5
of l5 assembly) or the instrumented cable was removed from the clad conduit and inserted into a similarly constructed, bare conduit.
THERMOCOUPUK Temperatures on the cable conductors within the conduit and air drop assemblies were measured with Type T, 24 gauge, Copper-Constantan electrically welded thermocouples formed from Copper and Constantan wires of special limits of error (&.5'C)," and covered with TeQon FEY insulation.
Temperatures on the cable conductors within the cable tray assembly were measured with Type K, 24
- gauge, Chromel-Alumel electrically welded thermocouples formed from Chromel and Alumel wires of "special limits of error (21.1'C)," and covered with braided fiberglass insulation. Allthermocouple wire was calibrated to &.5'C.
DATAACQUXSZZXONSYSTEM The outputs-of the test article thermocouples and room control thermocouples were monitored by a data acquisition system consisting of a John Fluke Mfg. Co.
Model HELIOS I 2289A Computer Front End, and an Apple Computer Co.
Macintosh Classic microcomputer.
The Computer Front End was connected to the RS422 Serial Interface Port of the Macintosh.
The computer was prograxnmed in Microsoft BASIC to command the HELIOS unit to sample the data input lines, receive and convert data into a digital format, and to manipulate the data for display on screen, the hard copy printout, and saving to hard disk. The computer program determined, and displayed, the average temperatures at each of the three positions on each test article.
The rate of change of temperature for the average of the thermocouples located in the center portion of the test article was.
then calculated.
Allindividual data points and calculated values were saved on hard disk at one minute intervals. A record ofindividual location temperatures, maximum temperatures and rates of change of temperatures was printed at five minute intervals. Alltest data is presented in Appendix F: TEST DATA.
CONTROLSYSTEM The current Qow through the test articles was regulated using process control type devices.
The available voltage for any test control circuit was 208 Vac single phase.
A Silicon Controlled RectIfier (SCR) device (Halmar Robicon Group Model No. 140P-FK2-CL) was used to vaxy the voltage available to the primary side of a step-down transformer between 0 Vac and 208 Vac in proportion to a 4-20 mA control input.
The test article was connected to the secondary side of the step-down transformer.
A proportional-integral-derivative process controller (Honeywell Universal Digital Controller Model No. UDC 3002-0-000-1-00-XXXK) was responsible for generating the '4-20 mA signal fed to the SCR device, based on a voltage feedback loop. A current transforxner (Flex-Core Model No.58-151, 150:5 a "oJ~
0 Cy oRAxo
0
Report Na. 12340-94583,95165-95168@5246 Texas Utilities Electric PTN-BFJH-96-005 ATTACHHENT I
REVISION 0
PAGE 6
of 15 or 76-102, 1000:5 ratio; input amps:output amps) was fitted to one lead of the test article to monitor the current flow through the conductor.
The output of the current transformer was connected to a current transducer (Flex-Core Model No.
CT5-005A) with a mA to mV converter (Flex-Core Model No. LRB-10000) to produce a 0-10 Vdc signal proportional to 'a 0-150 A or 0-1000 A current span in the sample conductor.
This 0-10 Vdc signal is used as the 'process variable" in the feedback loop to the controller.
In essence, the above circuitry made up a constant-current device, insensitive to line voltage changes.
The current in aay given system was driven to a level high enough to bring the conductor to 90'C as quickly as possible by increasiag the'output signal of the process controller via keypad commands.
As the conductor temperature approached 90'C, the current level was reduced aad the test article was given time to respond to current changes before another adjustment was made to the current.
During this time period, the controller was turned to "automatic" control and the "process variable set point" (the voltage output from the current transformer that represents the current level at which the controller will maintain the system) was adjusted to the same value as the displayed process variable (the controller varies its output ia order the maintain the process variable at the level indicated by the set point).
This process of adjusting the controller output (and the control variab1e set point) and waiting for the system to stabilize (about 1/2 hour to about 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />, depending upon the nature of the system) was coatinued until the temperature parameters of the test article were within the specified limits. The coatroller was allowed to operate the system for a muumum of three hours.
If, at the end of three hours, the system was still within the bounds of all specifications, a final current and voltage measurement were taken and the system was deemed
.to be in equilibrium.
s All final current measurements were performed using ammeters suppHed and calibrated by Texas UtiTities Electric. These ammeter used were manufactured by James Biddle Co. and identified as Biddle Iastruments Digital Clamp-On RMS Volt-Ammeter, Cat. No. 278001 (TU Electric ID No. IC-1029 and IC-1030).
Measurements recorded for test items containing 3C/¹10 AWG of 3C/¹6 AWG cable were taken with the ammeter ID No. IC-1030.
Current measurements recorded for test items containing 750 kCMil cable were taken with the ammeter ID No. IC-1029.
Calibration documentation for these devices can be found i' Appeadix G: Quality Assurance.
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'eport No. 12340-94583,95165-95168@5246 Texas Utilities Electric PTW-BAH-96-005 AITACHHchT I
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PAGE 7
of 15 1%B1PEAS (GENERAL)
The conduit materials used in the test were provided by Texas Utilities, and are representative ofthose installed at CPSES.
Cable tray materials used in this test were purchased by Omega Point Laboratories from B-Line Systems, Inc. (Cat. No. 248P0924144).
The following table provides pertinent data on the cable tray material used:
ATXRIBUTE Side rail thickness Run thickness Run s acin Rung dimensions DMENSION 0.048 in.
18 GA 9 in. o.c.
1-5/8 in. wx 13/16 in. h x 3/8 in. le Cable tray straight sections consisted ofASTM A446, GR A, pre-galvanized steel, ASTM A525.
All test items (with the exception of the cable tray assembly) were constructed from materials extracted from TU Electric's Comanche Peak Steam electric Station stock material storage areas in accordance with existing site procedures.
Electrical cables used in this test (with the exception of the cable tray assembly) consisted of cables supplied by TU Electric and taken from CPSES inventory.
Cables used in these tests were as follows:
W420 CABLE FUNCXXON Power Power Power Power DESCKPIXON 3C/¹6 AWG 60Qv.
3C/¹10 A%G 60Qv.
l/C 750 kCMil.600v.
3C/¹6 A%'G 600v.
0980 0.617 0.750 CBOSS-8ECTIONAL AREA(in )
0.754 0299 1.307
'.442 The diameters and cross-sectional areas listed herein represent the Laboratory's average often measurements of each cable type.
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PAGE 8 of 15 Thermo-Lag 330-1 Ma~tais Thermo-Lag materials were procured from Thermal Science, Inc. (TSI), St.
Louis, MO.
The Thermo-Lag'aterials were extracted from CPSES stock and were representative of materials installed in the plant.
Each one hour rated Thermo-Lag 330-1 V-Ribbed Panel is 1/2 in. thick (normal) x 48 in. wide x 78 in.
long, with stress skin monolith caQy adhered to the panel on one face.
Each panel was received with 350 Topcoat factory applied.
Each 330-1 Pre-Shaped Conduit Section is 36 in. long. Two thicknesses of conduit section materials were used, V2 in. thick (nominal) and 1/4 in. thick (nominal) "overlay" sections, both with stress skin monolithically adhered to the surface installed facing the protected conduit.
The 330-1 conduit materials were also received with 350 Topcoat factory applied.
Other materials supplied by TSI were 330-1 Trowel (bulk) Grade Subliming Compound (used to pre-caulk all joints 'and seams on the cable tray and conduit assemblies),
330-660 Flexi-Blanket Material used to wrap the cable air drop assemblies, 330-660 Trowel (bulk) Grade Material (used to pre-caulk all seams on the cable air drop assemblies),
330-69 Stress Skin Material (used to reinforce joints on the cable tray assembly) and 350 Topcoat (two part water-based mixture). All Thermo-Lag materials were measured, saw cut and installed onto the respective test assembly by Peak Seals crude personnel using approved CPSES drawings, procedures and specifications. Installations were inspected by GPSES-ceitified quality control inspectors.
Other MateriaLs Other commercial grade products used were: 1/2 in. wide x 0.020 in. thick, type 304 stainless steel rolled-edge banding straps with wing seals; 16 to 18 GA stirless steel tie wire; and, 0.010 in. s'tainless steel sheet metal.
Scheme SAC-1 The assembly consisted of a 3/4 in. conduit through which was pulled a single three conductor cable (W-026, 3C/410 AWG, 600V). The total cab1e length used for this test item was 60 ft. The three separate conductors within the cable were connected into a single series circuit. The current source was then connected to the two free cable ends.
Two conduits were prepared for testing, one clad and one bare - for baseline testing.
Report No. ~94583,95165-9516845246 Texas Utilities Electric PTN-BFJH-96-005 ATTACHMENT 1
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PAGE 9 of 15 Scheme ¹AC4 The assembly consisted of a 2 in. conduit through wnich vras pulled a single three conductor cable (W-020, 3C/¹6 AWG, 600V). The total cable length used for this test item was 60 ft.
The three separate conductors within the cable vrere connected into a single series circuit. The current source was then connected to the tvro free cable ends.
Two conduits were prepared ror testing, one ciad and one bare - for base1iae testing.
Scheme ¹AC-5 The assembly consisted of a 5 in. conduit through vrhich was pulled four separate single conductor cables (W-008, 1/C 750 kCMil,600V). The total cable leagth used for this test item was 88 ft. The four separate conductors were connected into a single series circuit. The current source vras then connected to the two free cable ends.
Tvro coaduits were prepared for testing, one clad and one bare - for baseline testing.
Scheme ¹AA1-1 The assembly consisted of a single three conductor cable (W-020, 3C/¹6 AWG, 600V) representing an air drop assembly.
The total cable length used for this test item vras 60 ft. The three separate conductors within the cable were connected iato a single series circuit. The current source vras then connected to the two free cable ends.
The cable was clad and allovred to cure.
The material was then removed to perform the baseline testing.
The assembly consisted of three separate siagle conductor cables (W-008, 1/C 750 kCMil, 600V) representing an air drop assembly.
The total cable length used for this test item was 88 ft. The three separate coaductors vrere connected into a single series circuit. The current source was then connected to the tvro free cable eads.
The cable vras clad aad allowed to cure.
The material vras then removed to perform the baseline testing.
Scheme OAT-1 The assembly consisted of a 24 in. wide r 4 in. deep cable tray assembly into which was laid 126 passes of single three coaductor cable (3C/¹6 AWG, TC XHHW CDRS, 600 Volt). The total cable length used for this test item vras 1720 K The three separate conductors'withia the cable were connected into a single series circuit and the cuzrent source was then connected to the tvro free cable eads.
The
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PAGE 10 of 15 cable tray assembly vras clad and allowed to cure.
The material was then removed to perform the baseline testing.
The internal cross-sectional areas for the conduits are as follows:
CONDUITSIZE (INCEST)
ACTUALCONDUIT I33. (INCHES) 0.824 2.067 5.047 CROSSBE TIONAL AIUM(in2) 0.533 3.356 20.006 The usable cross-sectional area of the cable tray was (3 in. deep r 24 in. wide) 72 square inches.
The table below shows the cable types used in each test article, the number of each cable installed, the total cross-sectional area of each cable type and the percent of the total available area taken up by cable in each test article.
3/4 in. CONDUIT CABLE TYPE W26 CEK)S&
SECXXONAL ALUM(in2) 0299 I
2 in. CONDUIT
% OF TOTAL AEU<M 56.10 W%20 CBOSS.
SECTIONAL ABER (in2) 0.754 5 in. CONDUIT
% OF TOTAL AIRE 22.47 CA'BL'E W-008 CBXkS-NUMBER SECTXONAL PBESENI,'BEA (in>)
5.228
% OF TOTAL ARE&
26.13
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PAGE 11 of 15 24 IN. CABLETRAY 3C/¹6 CROSS-SECTIONAL AREA(in2) 9o OF TOTAL AEU~M 77.31 TEEZUYCOCOUPLE PLACEZHKKT 24 gauge, Type T, Copper-Constantan electrically welded thermocouples (Special Limits of Error:
0.5'C, purchased with lot traceability and calibration certifications) were attached in nine places within each conduit or air drop assembly, by slicing through the outer jacket of the cable (down to bare conductor) and placing the thermojunction in direct contact with the top surface of the cable conductor and covering the slit with a double wrap of glass Qber reinforced electrical tap'e (Glass Cloth Electrical Tape, Class "B" Insulation, 1/2 in. wide, 3M Corporation, Item No. 27) for a minimum distance of 3-1/2 inches.
Thirty-nine 24
- gauge, Type K, Chromel-Alumel electrically welded thermocouples (Special Limits of Error: 21.1'C, purchased with lot traceability) were siaMuly secured to the cables within the cable tray assembly.
A representative sample of the thermocouple wire used in the cable tray test article was calibrated aRer the test procedure.
One thermocouple was located on each of the three conductors in each systexn (except the cable tray and 5 in. conduit having four conductors) at the mid-point of the assembly, and at both ends ofthe assembly (36 in. lefh and right of mid-point).
The 5 in. conduit having four conductors was similarly instrumented,. however, the fourth conductor had no thermocouples installed.
The cable tray assembly was instrumented with a total of thirty-nine thermocouples (thirteen located at the mid-point of the cable tray, thirteen located 36 in. to the left and 36 in. to, the right ofmid-point) located within the second and third layer of cables.
THERMhLAG INSTALLATIONHIGHLIGHTS Thermo-Lag materials were installed in accordance with the instructions contained in the CPSES Site Procedures referenced in Test Plan, Rev. 4.
Short abstracts ofthe installation are included herein to clarify specific details.
Thermo-Lag 330-X Pre-Shaped ConduM Sections (Xf2in. nom. thicknear)
This material was used to construct the 3/4 in., 2 in. and 5 in. diameter raceway design protective envelopes.
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PAGE 12 of 15 Thermo-Lag+ 330-1 Pre-Shaped Conduit Sections (I/4in. nom. thickness)
This material was used as an overlay on the 3/4 in. and 2 in. diameter raceway design protective envelopes.
Thermo-Lag+ 330-1 U-ribbed Panels (I)2in, nom. thickness)
This material was used to construct the cable tray protective envelope.
Thermo-Leg/'30-1 Subliming Trowel Grade Material This material was used to pre-caulk all joints, seams and upgraded areas between pre-shaped sections.
Thermo-L,ag 33&660E7exi-BLm~
This material was used to construct the cable air drop protective envelopes.
Thermo-Lag 33~ Sublimb~'.Pnuael Grade Material This material was used to pre-caulk all joints and seams between 330-660 Flexi-Blanket material and all joints of330 Flexi-Blanket.
Application Methods Each rigid conduit assembly was clad with Thermo-Lag 330-1 V2 in. (nominal) thick Pre-Shaped Conduit Section Material.
All joints and seams were pre-caulked with 330-1 Trowel Grade Material.
The sections installed on the 5 in.
diameter conduit were secured using stainless steel banding material.
The sections installed on the 3/4 in. and the 2 in. diameter conduits were secured using stainless steel tie wire. ARer being clad with 1/2 in. thick 330-1 Pre-Shaped Conduit Sections, V4 in. thick (nominal) Pre-Shaped Conduit Section ("overlay")
Material was installed on the 3/4 in. and the 2 in. diameter conduits.
Alljoints and seams were pre-cauiked with 330-1 Trowel Grade Material and then secured using stainless steel banding.
Finally, Thermo-Lag 350 Topcoat was applied over areas where the 330-1 Trowel Grade Material had been applied following a 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> (mixumum cure time).
The entire cable tray system was clad with Thermo-Lag 330-1 V2 in. (nominal)
V-Ribbed Panel Material. To prevent sagging ofthe top panels, the cable tray was pre-banded using stainless steel banding.
Al joints and seams of the protective envelope were pre-caulked with 330-1 Trowel Grade Material and secured with stainless steel bands spaced at 12 in, intervals.
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PAGE 13 of 15 During construction of the cable tray protective envelope, several areas of the envelope were reinforced vrith combinations of stainless steel wire, Thermo-LaP 330-1 Trowel Grade Material and Thermo-Lago 330-69 Stress Skin vrhich was secured with staples.
The areas reinforced included butt joints betvreen panels on the bottom surface of the envelope and the longitudinal seams where the top and bottom panels overlap panel pieces installed at the tray side rails.
The butt joints betvreen panels on the bottom surface were "stitched" with stainless steel tie wires on 5 in. centers.
A thin layer of 330-1 Trowel Grade Material (approximately 3/16 in. thick) was aext applied extending 5 in. on each side of the butt joiats.
Stress skin was cut and wrapped circumferentially around the envelope to overlap the butt joints by 5 ia. oa each side.
The stress shin was worked into the trowel grade layer and secured ia place with staples and stainless steel tie wire. A skim coat of 330-1 Trowel Grade Material, approximately V16 in.
thick, was then applied over the stress skia and the tie vrires.
To reinforce the longitudinal seams at the side rails, a 3/16 in. thick layer of 330-1 Trovrel Grade Material vras applied over the panels installed at the side rails and extending 5 ia. tovrards the middle of the tray and both the top and bottom surfaces.
Stress skin vras cut and formed into a squared, U-shaped configuration which vras placed over the sides and onto the top and bottom surfaces for a 5 in.
distance.
The stress skin vras worked into the trovrel grade layer and secured in place with staples and stainless steel tie wire. A skim coat of 330-1 Trowel Grade Material, approximately V16 in. thick, was then applied over the stress skin and tie wires.
Finally, Thermo-Lag 350 Topcoat was applied over all areas where 330-1 Trowel Grade Material had been applied follovring a 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> (minimum) cure time.
Each cable air drop assembly was clad with three complete-wraps of Thermo-Lag 330-660 Flexi-Blanket Material. An overlap of 2 ia. - 4 in. was maintained for each wrap.
The overlap area of each wrap was pre-caulked with Thermo-Lag 330-660 Trowel Grade Material and secured with stainless steel bands spaced on 6 in. centers.
The overlap areas vrere positioned 180'rom one another.
The completed test specimens were placed in the Laboratory's test enclosure and the thermocouples connected to the data acquisition system and their outputs verified; The tests vrere conducted from March 2, 1993, to March 14, 1998, by Herbert W Stansberry II, project manager, with the follovring persons preseat at various times:
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Report No. ~~'4M3,961%-96168$ 6246 Texas Utilities Electric PTN-BFJH-96-005 ATTACHHENT 1
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PAGE 14 of 15 Renaldo Jeans Dick Wilson BillRodgers John White Chester Pruett Melvin Quick Kent Brown Deggarg N. Priest Kerry Hitchcock Connie Humphry Laudencio Castanon USNRC USNRC USNRC TU Electric TU Electric (Fluor-Daniel Corporation)
TU Electric (Stone &, Webster Engineering)
TVA Omega Point Laboratories, Inc.
Omega Point I aboratories, Inc.
Omega Point Laboratories, Inc.
Omega Point Laboratories, Inc.
TEST ITEM EQU.
VOLTAGE (VOLTS)
EQU.
EQU.
CURRENT TEMP (AMPS)
('C)
ROOM CORRECTED TEMP CURRENT PERCENT
('C)
(AMPS)
DERATING 3C/¹10 in 3/4" Conduit (base) 3C/¹10 in 3/4 Conduit (clad) 11.9 11.0 36.0 89.4 39.4 89.8 40,3 39,3 39.6 35,9 9.34 3C/¹6 in 2" Conduit (base) 3C/¹6 in 2 Conduit (clad) 3C/¹6 in AirDrop (base) 3C/¹6 in AirDrop (clad) 3C/¹6 in 24" Cable Tray (base) 3C/¹6 in 24 Cable Tray (clad) 9.15 10.9
, 8.12 46.5 64.6 94.0 74.0 15.9 89.1 89.9 90.9 89.8 90.3 40.3 39.3 39.5 40.5 39.5 39.9 64.5 93.6 73.8 23.1 15.8 6.67 212 31.6
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Report No. 12340-94583,95165-95168g5246 Texas Utilities Electric PTN-BFJH-96-005 ATTACHHENT REVISION 0
PAGE 15 og 15 TEST ITEM EQU.
VOLTAGE (VOLTS)
EQU.
EQU.
ROOM CURRENT TEMP TEMP (AM PS )
('C)
('C)
CORRECTED CURRENT (AMPS)
PERCENT DERATING 750 kCMilin AirDrop (ba" e) 750 kCMilin AirDrop (clad) 521 3.62 89.5 402 90.0 39.9 31.8 4C 750 kCMilin 5 Conduit (base) 4/C 750 kCMilin 5 Conduit (clad) 2.19 2.08 89.4 402 90.0 402 510
, 10.7 The equilibrium current values are single-point measurements performed after the system was at equilibrium and the change in current was very low. The Equ.
Temp (equilibrium conductor temperature at the hottest location), and the Room Temp are reported as 60 minute average values.
The Corrected Current values are those calculated in accordance with P 848/D12 IEEE Standard Procedure for the Determination of the Ampacity Derating of Fire Protected Cables~, which corrects these current values to a room temperature of 40'C and a conductor.
temperature of90'C.
where I
Tc Ta I
~
Tc'a'Tc'-
Ta') x(a+ Tc)
(Tc - Ta) x (u + Tc')
test current at equilibrium, amperes hottest conductor temperature at center at equilibrium, 'C measured enclosure ambient temperature, 'C normalized current, amperes normalized conductor temperature
= 90'C normalized ambient temperature
= 40'C 234.5 for copper
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Table 2 - Dlmenslons and weights of rigid steel conduit Customary inch-pound units Metric units Nominal or trade size of conduit In Nominal inside Outside diameter diameter ln ln Nominal wall thickness in Length without coupling ft and in Minimum weight of ten unit lengths with coupllngs attached Ib Nominal Inside diameter mm Outside diameter Nominal Length wall without thickness coupling mm meters Minimum weight of ten unit lengths with coupllngs
'ttached kg 3/8 1/2 3/4 1
1 -1/4 1 -1/2 2
2 -1/2 3
3 -1/2 4
5 6
0.493 0.632-0.836 1.063 1.394 1.624 2.083 2.489 3.090 3.570 4.050 5.073 6.093 0.675 0.840 1.050 1.315 1.660 1.900 2.375 2.875 3.500 4.000 4.500 5.563 6.625 0.091 0.104 0.107 0.126 0.133 0.138 0.146 0.193 0.205 0.215 0.225 0.245 0.266 9'11 -1/2" 9'11 -1/4" 9'11 -1/4 9'11 9'11 9'11 9'11 9'10 -1/2 9'10 -1/2 9'10 -1/4 9'10 -1/4 9'10 9'10" 51.5 79.0 105.0 153.0 201.0 249.0 332.0 527.0 682.6 831.0 972.3 1313.6 1745.3 12.5 16.1 21.2 27.0 35.4 41.2 52.9 63.2 78.5 90.7 102.9 128.9 154.8 17.1 21.3 26.7 33.4 42.2 48.3 60.3 73.0 88.9 101.6 114.3 141.3 168.3 2.31 2.64 2.72 3.20 3.38 3.51 3.71 4.90 5.21 5.46 5.72 6.22 6.76 3.04 3.03 3.03 3.02 3.02 3.02 3.02 3.01 3.01 3.00 3.00 3.00 3.00 23.36 35.83 47.63 69.40
. 91.17 112.95 150.60 239.05 309.63 376.94 441.04 595.85 791.67 NOTE -Applicable toie~..ces:
Length: k 1/0 in (k 8.35 mm) (without coupling)
Outside I',ameter for tra.e sizes 3/8 in through 2 In: k 0.015 In (a 0.38 mm) for tr ide sizes 2-1/2 In through 4 ln: k 0.025 In (k 0.64 mm) for 'rade sizes 5 and 6 In:21%
N'.ll thickness:
See 7.3.
m C) <
m~
C/l I
Amll I
W lCl OI I
C)
N O Cll
EBASCO SERVICES INCORPORATED PTN-BFJH-96-005 ATTACHHENT 3
REVISION 0
PAGE I
of 3
~P By 45 CHKD.
BY CLIENT PROJECT SUBJECT DATE 4 2V-VO DATE REVISION 1
UAIuVMIiVii SHEET~ OF~
OFS NO.~
DEPT NO.~
4 Conductor Single 3/c or Triplex Sing'le Casubu;hu; 3/c or Xrh>JJs 812 AWG 810 AWG 88 AWG N6 AWG P4 AWG N2 AWG N1/0 AWG 02/0 AWG 04/0 AWG 8250 kcmil 8350 kcmil 8500 kcmil 8750 kcmil 81000 kcmll 81250 kcmil 1.72 1.08 0.679 0.427 0.269 0.169 0.106 0.0843 0.0525 0.0449 0.0320 0.0222 0.0148 0.0111 0.00888 1.789 1.123 0.706 0.444 0.280 0.176 0.110 0.0877 0.0546 0.0467 0.0333 0.0231 0.0154 0.0115 0.00924 1.72 x 1.25
= 2.15 1.08 x 1.25
= 1.35 0.679 x 1.25
= 0.849 0.427 x 1.25
= 0.534 0.269 x 1.25
~ 0.336 0.169 x 1.25
= 0.211 0.106 x 1.25
= 0.133 0.0843 x 1.25
= 0.105 0.0525 x 1.25. = 0.0656 0.0449 x 1.25
= 0.0561 0.0320 x 1.25
= 0.040 0.0222 x 1.25
= 0.0278 0.0148 x 1.25
= 0.0185 0.0111 x 1.25
= 0.0139 0.00888 x 1.25
= 0.0111
= 2.236 1.404
= 0.883
= 0.555
= 0.350.
= 0.220
= 0.138
= 0.110
= 0.0683
= 0.0584
= 0.0416
= 0.0289
- 1. 789 x 1. 25
- 1. 123 x l. 25
- 0. 706 x 1. 25 0.444 x 1.25
- 0. 280 x 1. 25 0.176 x 1.25 0.110 x 1.25 0.877 x 1.25 0.0546 x 1.25 0.0467 x 1.25 0.0333 x 1.25 0.0231 x 1.25 1099E/2
/""
~d/
CHKD.
BX CLIENT PROJECT SUBJECT EBASCO SERVICES INCORPORATED DATE > 2f Fo-DATE~6Kq I>
REVISION 1
PTN-BFJH-96-005
) g ATTACHHENT 3
REVISION 0
PAGE 2
of 3
OFS NO.Q~~
DE P T NO.~
Conductor AC/DC Resistance Ratio AC Resistance at 90 C
Single Conductor Hakim~
N12 AWG Nlo AWG N8 AWG N6 AWG N4 AWG N2 AWG Nl/0 AWG N2lo AWG NOIO AWG N250 kcmil N350 kcmil
'N500 kcmil N750 kcmil N1000kcmi1 N1250kcmi1 1.0 1.0 1.0 1.
0'.0 1.0 1.001 1.001 1.004 1.005 1.009 1.018 1.039 1.067 1.102 1.0 1.0 1.0 1.0 1.0 1.01 1.02 1.03 1.05 1.06 1.08 1 ~ 13 1.21 1.30 1.41 2.15 x 1.0 = 2.15 1.35 x 1.0 = 1.35 0.849x 1.0 ~ 0.849 0.534x 1.0 = 0.534 0.336x 1.0 = 0.336 0.2llx 1.0 ~ 0.211 0.133x1.001~
0.133 0.105x1.001=
0.105 0.0656x1.004=
0.0659 0.056lx1.005= 0.0564 0.0400xl.009= 0.0404 0.0278xl.018=0.0283 0.0185x1.039=0.0192 0.0139x1.067~0.0148 0.0111x1.102=0.0122 2.15 x 1.0
=
1.35 x 1.0
=
0.849x 1.0
=
0.534x 1.0
=
0.336x 1.0
=
0.211x 1.01=
0.133x 1.02=
0.105x 1.03=
0.0656x1.05=
0.0561xl.06=
0.0400xl.08=
0.0278x1.13=
0.0185x1.21=
0.0139x1.3
~
0.011lx1.41=
2.15 1.35 0.849 0.534 0.336 0.213 0.136 0.108 0.0689 0.0595 0.0432 0.0314 0.0224 0.0181 0.0157 1099E/3
CHKD.
BY CLIENT PROJECT SUBJECT PTN-,BFJM-96-005 ATTACHMENT 3
RfVISION 0
PAGE 3
of EC-096 EBAS<<SERVICES INCORPORATED DATE~M-Wu DATE~62/ qO REVISION 1
S8FET 4 OF~
OFS NO.Q~~
DEPT No.~
0 (See Table 7.2.2.2a for ac/dc resistance ratios)
Conductor AC Resistance at 90 C
3/C or Triplex Uazm~
812 AWG 010 AWG 88'WG 86 AWG t4 AWG 82 AWG 81/0 AWG 82/0 AWG 84/0 AWG 8250 kcmil 8350 kcmil 8500 kcmil 2.236 x 1.404 x 0.883 x 0.555 x 0.350 x 0.220 x 0.138 x 0.110 x 0.0683x 0.0584x 0.0416x 0.0289x 1.0
= 2.236 1.0 = 1.404 1.0
= 0.883 1.0
= 0.555 1.0
= 0.350 1.0
= 0.220 1.OOl=O.138 1.001=0.110 1.004=0.0686 1.005~0.0587 1.009=0.0420 1.018=0.0294 2.236 x 1.404 x 0.883 x 0.555 x 0.350 x 0.220 x 0.138 x 0.11'0 x 0.0683x 0.0584x 0.0416x 0.0289x 1.0
=
1.0
=
1.0
=
1.0
=
1.0
=
1.01=
1.02=
1.03=
1.05=
1.06=
1.08=
1.13=
2.236 1.404 0.883 0.555 0.350-0.222 0.141 0.113 0.0720 0.0619 0.0449 0.0327 1099E/4
1N C.
APPROVED FIRE BARRIERS FOR THE biUCLEAR INDUSTRY therma-hg'30-1 FIRE BARRIER MATERIAl.PROPERTIES PTN-BFJH-96-005 ATTACHHENT 4
REVISION 0
PAGE I
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This brochure presents the major properties of THFRMO-LAG in interest for nuclear generating plant application. For additional data not
'resented.
consult TSI.
RADIATIONRESISTANCE 2.12 x 1P rads total 40 year integrated dose After irradiation no degradation in fire resistive properties FIRE PROTECTIVE FEATURES ASTM E-84 Testing for THERMO-LAG 330-1 Flame Spread Rating 5
Fuel Contributed Rating
0..
- Smoke Developed Rating
15 ASTM E-84 Testing for THERMO-LAG Primer Flame Spread Rating 0
Fuel Contributed Rating
0 Smoke Developed Rating
5 ASTM E-84 Testing for. THERMO-LAG 350-2P Topcoat Flame Spread Rating 5
Fuel Contributed Rating
0 Smoke Developed Rating
0 One-hour and.htee-hour fire endurance test in accordance with ASTM E-119, and
. ANI/MAERPtest "ANI/MAERPStandard Fire Endurance Test Method to Qualify a Protective Envelope for Class 1E Electrical Circuits".
1/2 Inch THERMO-LAG rated one hour 1 Inch THERMO-LAG rated three hours
~.
, ASTM E-119 hose stream test on electrical trays and conduit for one and three hour rated THERMO-LAG (2-1/2 minute hose stream
~
application)
ASTM E-119 fire tests for structural steel, hangers to determine required THERMO-LAG thickness for one and three nour rating AMPACITYDERATING Ampacity derating tests performed in accordance with IPCEA Publication Number P-54-440 (Second Edition) (to determine cable base ampacity) and NEMA Publication No.
WC51-1975. The following results were obtained (for 40 percent loading):
One-Hour THERMO-LAG Barriers Tray
12.5 percent derating Conduit 6.8 percent derating Three-Hour THERMO-LAG Barriers Tray 17 percent derating
~Conduit
10.9 percent derating MECHANICAL(PHYSICAL) PROPORTIES Density wet 10.5 Ibs/gallon Density dry 75~3 Ibs/tP Dry Weight 1/2 inch thickness (one-hour rated) ~ 3.25 Ib/ftz Dry Weight 1 inch thickness (three-hour rated) = 6.5 Ib/fthm Water based Tensile strength p5'F) 800 PSI Shear strength p5'F) 1100 PSI Flexural stitfness (75'F) 85 KSI Flexural strength p5') 2200 PSI Bond strength p5') 575 PSI initial Modulus
~>~'F) 70 KSI Thermal Conductivity (Unfired, full cured) 0.1 Btu/hr tt.~ F/
SEISMIC PROPORTY THERMO-LAG has been qualified by static analysis for a very conservative loading. A value of 7.5g horizontal, and 6.0g vertical acceleration.
combined biaxially was used for the analysis.
These values bound most nuclear generating plant seismic criteria.
~ 'torage Conaitions t'bove 32'F and below 100'F'sbestoes free Non-toxic High humidi;y Industrial atrnospnere (COr SO> mix)
Salt spray CHEMICALRESISTANCE OF THERMO-LAG 330-1 Water Sulfuric acid Hydrochloric acid Sodium hydroxide Sodium chloride Acetic acid Kerosene Anhydrous Ammonia LNG LPG Methanol 10 10 10 5
percent solution percent solution percent solution percent solution Interior Environmental Conditions High humidity COz SO> atmosphere mix Chlorine Results: Service life of at least 40 years PTN-BFJM-96-005 ATTACHMENT 4
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CHEMICALRESISTANCE OF THERMO-LAG 350-2P TOPCOAT Frequent Contact Alkali solutions Salt solutions Alcohols Aliphatic hydrocarbons Aromatic hydrocarbons Occasional Contact Fresh water Waste water Mineral oils Vegetable oils Organic acids Mineral acid s Oxidizing agents Ketones Si...,,
260 Br snnon Ave Sc. Louis, Mo. 631 39
~t31 4) 352 8422 s Telex: 44 2384
~ Telex: 20-9901
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of 15 AMPACITY DEBATING OF FIRE PROTECT'ED CABLES Pmject No. 12340-94583,95165-95168/5246 ELECTRICALTEST TO DETERMINE THE AMPACITYDERATING OF APROTECTIVE ENVELOPE FOR CLASS 1E ELECTRICAL CIRCUITS March 19, 1993 Prepared For.
TU Electric COAGQlCHE PEAK STEAM ELECTRIC STATION P.O. Box 1002 Glen Rose, Texas 76043-1002
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of 15 Three conduit assemblies, two air drop assemblies, and one cable tray asseinbly, clad with Thermo-Lag materials as described herein, were evaluated in accordance with the Texas UtilitiesElectric TEST PLAN, Rev. 4, yielding the following ampacity derating values:
TEST ITEM PERCENT DERATING 3C/¹10 in 3/4" Conduit 3C/¹6 in 2" Conduit 3C/¹6 in AirDro 24" Cable Tra 750 kCMilin AirDro 4/C 750 kCMilin 5" Conduit) 9,34 6.6?
3L6 31.8 10.7 The details, procedures and observations reported herein are correct and true within the hmits of sound engineering practice.
All specimens and test sample assemblies were produced, installed and tested under the surveillance of either Texas Utilities'r the testing laboratory's Quality Assurance Program.
This report describes the ana1ysis of distinct assemb1ies and includes descriptions of the test procedure followed, the assemblies tested, and all results obtained.
All test data are on BIe and remain available for review by authorized persons.
Herbert W. Stansberxy II Project Manager Date Constance A. Humphrey Manager, QA Dept.
Deggary¹ Priest President Date
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TABLEOF CONTENTS INTRODUCTION
'HMTPROCEDURE Test Enclosure Thermo couples Data Acquisition system Current Control System
- Final Current Measurements TEST ASSEMBLY Test Items (General)
Test Items Electrical Cables Thermocouple Placement Thermo-Lag Installation Highlights
'H<DTRESULTS APPENDICES Appendix A: CONSTRUCTION DRAWINGS Appendix B: TEST PLAN Appendix C: THERMOCOUPLE LOCATIONS Appendix D: TABULARTEST DATA Appendix E: QUALITYASSUEVLÃCE Appendix F:
PHOTOGRAPHS Appendix G: THERMO-LAG INSTALLATION Last Page ofDocument 1
1 1
2 2
2 3
4 4
5 7
8 8
1D i3 38 25 32 382 781 DETAILS 802 8%
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of 15 A Fire Protective Envelope protects electrical components from the eG'ects of fire.
In doing so, it willreduce the inQow of energy into the system and maintain the internal temperature below maximum limits. These limits will ensure that the cable systems remain functional during a fire, and allow operators to maintain control of systems required for fire safe shutdown..
The addition of a Fire Protective Envelope on a cable system willnot only protect the contained cable from elevated temperatures associated with a fire, but will impede the heat dissipation associated with cable operation.
The evaluation described herein will yield an accurate and realistic value for the ampacity derating of cables when a Fire Protective Envelope is'instaQed on the cable system.
This entire test program was performed in accordance with Texas Utilities Electric TEST PLAN, Rev. 4, which has been included in Appendix B.
The specific details ofthis project willbe found in that document.
The ampacity test enclosure was constructed of steel stud walls and ceiling with a muiimum of 1 in. of polystyrene insulation lining the interior of the room.
The overaQ dimensions of the test enclosure were 20 ft. x 18 R. x 8 R. An entry door was provided in one wall and an observation window was placed in an adjacent waQ. The waQ with the observation window was made to be removable to facilitate easier location oftest articles.
Four 1.5 RW heaters were disposed about the room to regulate ambient conditions.
Two of the heaters were variable from outside of the test enclosure via connection to standard laboratory variable transformers.
Located directly behind each heater was a 24 in. box fan to gently stir the air and more evenly distribute the heat.
A total of nine thermocouples were suspended from the ceiling and positioned in the horizontal plane of the test items, 12 in.
away from various test items to monitor the ambient room temperatures.
Two stanchions were erected to support the test articles.
Each stanchion consisted of a length of 2 in. square steel tubing supported at several points by an A-frame leg.
A length of2 in. x 4 in. wood stud was afBxed to,the top surface of each stanchion.
In the case of all but the 5 in. conduit, the test article with the fire protective system installed was tested first. Once the system had attained equilibrium and all final measurements had been taken, the fire protective barrier was removed from the system (in the case of the air drop assemblies and the cable tray
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of 15 assembly) or the instrumented cable was removed from the clad conduit and inserted into a similarly constructed, bare conduit.
TEGWKOCOUPUH Temperatures on the cable conductors within the conduit and air drop assemblies were measured with Type T, 24 gauge, Copper-Constantan electrically welded thermocouples formed from Copper and Constantan wires of "special limits of error (M.5'C)," and covered with TeQon FEY insulation.
Temperatures on the cable conductors within the cable tray assembly were measured with Type K, 24 ga'uge, Chromel-Alumel electrically welded thermocouples formed from Chromel and Alumel wires of "special limits of error (%1.1'C)," and covered with braided fiberglass insulation. Allthermocouple wire was calibrated to &.5 C.
DATAACQUISXHONSYSTEM The outputs-of the test article thermocouples and room control thermocouples were monitored by a data acquisition system consisting of a John Fluke Mfg. Co.
Model HELIOS I 2289A Computer Front End, and an Apple Computer Co.
Macintosh Classic microcomputer.
The Computer Front End was connected to the RS422 Serial Interface Port of the Macintosh. The computer was programmed in MicrosoR BASIC to command the HELIOS unit to sample the data input lines, receive and convert data into a digital format, and to manipulate the data for display on screen, the hard copy printout, and saving to hard disk. The computer program determined, and displayed, the average temperatures at each of the three positions on each test article.
The rate of change of temperature for the average of the thexmocouples located in the center portion of the test article was then calculated.
Allindividual data points and calculated values were saved on hard disk at one minute intervals. A record ofindividual location temperatures, zmuamum temperatures and rates of change of temperatures was printed at Gve minute intervals. Alltest data is presented in Appendix F: TEST DATA.
CORZROL SYBZESX The current Qow through the test articles was regulated using process control type devices.
The available voltage for any test control circuit was 208 Vac single phase.
A Silicon Controlled=Rectifier (SCR) device (Ha1mar Robicon Group Model No. 140P-FK2-CL) was used to vary the voltage available to the primary side of a step-down transformer between 0 Vac and 208 Vac in proportion to a 4-20 mA control input.
The test article was connected to the secondary side of the step-down transformer.
A proportional-integral-derivative process controller (Honeywell Universal Digital ControQer Model No. UDC 3002-0-000-1-00-ZQZ) was responsible for generating the 4-20 mA signal fed to the SCR device, based on a voltage feedback loop. A current transformer (Flex-Core Model No.58-151, 150:5
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of 15 or 76-102, 1000:5 ratio; input amps:output amps) was fitted to one lead of the test article to monitor the current flow'hrough the conductor.
The output of the current transformer was connected to a current transducer (Flex-Core Model No.
CT5-005A) with a mA to mV converter (Flex-Core Model No. LRB-10000) to produce a 0-10 Vdc signal proportional to a 0-150 A or 0-1000 Acurrent span in the sample conductor.
This 0-10 Vdc signal is used as the "process variable" in the feedback loop to the controller. 'In essence, the above circuitry made up a constant-curx'ent device, insensitive to line voltage changes.
The current in any given system was driven to a level high enough to bring the conductor to 90'G as quickly as possible by increasing the'output signal of the process controller via keypad commands.
As the conductor temperature approached 90'C, the current level was reduced and the test article was given time to respond to current changes before another adjustment was made to the
'urrent.
During this time period, the controller was turned to "automatic" control and the "process variable set point" (the voltage output from the current transformer that represents the current level at which the controller will maintain the system) was adjusted to the same value as the displayed process variable (the controller varies its output in order the maintain the process variable at the level indicated by the set point).
This process of adjusting the controller output (and the control variable set point) and waiting for the system to stabilize (about 1/2 hour to about 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />, depending upon the nature of the system) was continued until the temperature parameters of the test article were within the specified limits. The controller was allowed to operate the system for a minimum of three hours.
If, at the end of three hours, the system was still within the bounds of all specifications, a final current and voltage measurement were taken and the system was deemed
.to be in equilibrium.
All final current measurements were performed using ammeters supplied and calibrated by Texas Utilities Electric. These ammeter used were manufactured by James Biddle Co. and identified as Biddle Instruments Digital Clamp-On RMS Volt-Aauneter, Cat. No. 278001 (TU Electric ID No. IC-1029 and IC-1030).
Measurements recorded for test items containing 3C/¹10 AWG of 3C/¹6 AWG cable were taken with the ammeter ID No. IC-1030.
Current measurements recorded for test items containing 750 kCMilcable were taken with the ammeter ID No. IC-1029.
Calibration documentation for these devices can be found in Appendix G: Quality Assurance.
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of 15 xeEZ IXZ2tB(GENEtIALl The conduit materials used in the test were provided by Texas Utilities, and are representative ofthose installed, at CPSES.
Cable tray materials used in this test were purchased by Omega 'Point Laboratories from B-Line Systems, Inc. (Cat. No. 248P0924144).
The following table provides pertinent data on the cable tray material used:
DIMENSION Side rail thickness Run thickness Run s acin Rung dimensions 0.048 in.
18 GA 9 in. o.c.
1-5/8 in. wx 13/16 in. hx 3/8 in. le Cable tray straight sections consisted ofASTM A446, GR A, pre-galvanized steel, ASTM A525.
AH test items (with the exception of the cable tray assembly) were constructed from materials extracted from TU Electric's Comanche Peak Steam Electric Station stock material storage areas in accordance with existing site procedures.
Electrical cables used in this test (with the exception of the cable tray assembly) consisted of cables supplied by TU Electric and taken from CPSES inventory.
Cables used, in these tests were as follows:
CAIKZ TYPE
%420 W426 W408 CABLE FUNCTION Power Power Power Power DESCMPZIDN 3C/¹6 AWG 600v.
3C/¹10 AWG 600v.
l/C 750 kCMil.600v.
3C/¹6 AWG 600v.
0.617 0.750 CK538S.
SECTIONAL AREA(in?)
0299 1307
'.442 The diameters and cross-sectional areas listed herein represent the Laboratory's average often measurements of each cable type.
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PAGE 8 of 15 Thermo-Lag 330-1 Matexials Thermo-Lag materials were procured from Thermal Science, Inc. (TSI), St.
Louis, MO. The Thermo-Lag materials were extracted from CPSES stock and were representative of materials installed in the plant.
Each one hour rated Thermo-Lag 330-1 7-Ribbed Panel is 1/2 in. thick (nominal) x 48 in. wide x 78 in.
long, with stress skin moaolithim~Jy adhered to the pand on one face.
Hach panel was received with 350 Topcoat factory applied.
Each 330-1 Pre-Shaped Conduit Section is 36 in. long. Two thicknesses of conduit section materials were used, V2 in. thick (nomixml) and 1/4 in. thick (nominal) overlay" sections, both with stress skin monolithically adhered to the surface installed facing the protected conduit.
The 330-1 conduit materials were also received with 350 Topcoat factory applied.
Other materials supplied by TSI were 330-1 Trowel (bulk) Grade Subliming Compound (used to pre-caulk all joints and seams on the cable tray and conduit assemblies),
330-660 Flexi-Blanket Material used to wrap the cable air drop assemblies, 330-660 Trowel (bulk) Grade Material (used to pre~ulk all seams on the cable air drop assemblies),
330-69 Stress Skin Material (used to reinforce joints on the cable tray assembly) and 350 Topcoat (two part water-based mixture). All Thermo-Lag materials were measured, saw cut.and installed onto the respective test assembly by Peak Seals craS personnel using approved CPSES drawings, procedures and speci6cations.
InstaQations were inspected by CPSES-certiGed quality control inspectors, Other Materials Other commercial grade products used were: V2 in. vride x 0.020 in. thick, type 304 stainless steel rolled-edge banding straps with wing seals; 16 to 18 GA stainless steel tie wire; and, 0.010 in. stainless steel sheet metal.
Scheme ¹AC-I The assembly consisted of a 3/4 in. conduit through which was pulled a single three conductor cable (W-026, 3C/¹10 AWG, 600V). The total cable length used for this test item was 60 ft. The three separate conductors within the cable were connected into a single series circuit. The current source was then connected to the two free cable ends.
Two conduits were prepared for testing, one clad and one bare - for baseline testing.
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PAGE 9 of I5 Scheme ¹AC4 The assembly consisted of a 2 in. conduit through which was pulled a single three conductor cable (W-020, 3C/¹6 AWG, 600V}. The total cable length used for this test item was 60 ft.
The three separate conductors within the cable were connected into a single series circuit. The current source was then connected to the two free cable ends.
Two conduits were prepared for testing, one clad and one bare - for baseline testing.
Scheme ¹AC-5 The assembly consisted of a 5 in. conduit through which was pulled four separate single conductor cables (W-008, VC 750 RCMil, 600V}. The total cable length used for this test item was 88 ft. The four separate conductors were connected into a single series circuit. The current source was then connected to the two i'ree cable ends.
Two conduits were prepared for testing, one clad and one hare - for baseline testing.
Scheme ¹AA1-1 The assembly consisted of a single three conductor cable (W-020, 3C/¹6 AWG, 600V} representing an air drop assembly.
The total cable length used for this test item was 60 ft. The three separate conductors within the cable were connected into a single series circuit. The current source was then connected to the two kee cable ends.
The cable was clad and allowed to cure.
The material was then removed to perform the baseline testing.
Scheme ¹AA4-2 The assembly consisted of three separate single conductor cables (W-008, VC 750 kCMil, 600V) representing an air drop assembly.
The total cable length used for this test item was 88'A.
The three separate conductors were connected into a single series circuit. The numnt source was then connected to the two free cable ends.
The cable was clad and allowed to cure.
The material was then removed to perform the baseline testing.
Scheme ¹AT-1 The assembly consisted of a 24 in. wide r 4 in. deep cable tray assembly into which was laid 126 passes of single three conductor cable (3C/¹6 AWG, TC XHHW CDRS, 600 Volt}. The total cable length used for this test item was 1720 ft. The three separate conductors within the cable were connected into a single series circuit and the current source was then connected to the two free cable ends.
The
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PAGE 10 of 15 cable tray assembly, was clad and allowed to cure.
The material was then removed to perform the baseline testing.
The internal cross-sectional areas for the conduits are as follows:
CONDUITSIZZ (INCH')
ACTUALCONDUIT CROSSSEGTIONAL LD. (INCHES)
AIKA(hP) 0824 5.047 0.533 3.356 20.006 The usable cross-sectional area ofthe cable tray was (3 in. deep x 24 in. wide) 72 square inches.
The table below shows the cable types used in each test article, the number of each cable installed, the total cross-sectional area of each cable type and the percent of the total available area taken up by cable in each test article.
3/4 in. CONDUIT W%26 CROSS.
NUMBHL SECXXONAL PRESEKZ AREA(in2) 2 in. CONDUIT
% OF Tm'AL A%%A 56.10 CAXKZ TYPE W20 CRC)SS-NUMBI<2k SECTIONAL PBESENX'REA (in2) 0.754 5 in. CONDUIT
% OF TOTAL Mu&
22.47 W408 NUMBI<22 PIKSEKE CROSS SECTIONAL ARFA(hP)
% QF TOTAL AXu<M 26.13 a~o
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PAGE 11 of 15 24 IN. CABLETRAY CABLE TYPE 3C/ee GROS&
NUMBER SECTIONAL PK~~ÃZ AREA(ixl2) 9o OF TOTAL AMUk 77.31 TEG<2LMOCOUPLE PLACEIHKÃZ 24 gauge, Type T, Copper-Constantan electrically welded thermocouples (Special Limits of Error:
0.5 C, purchased with lot traceability and calibration certifications) were attached in nine places within each conduit or air drop assembly, by slicing through the outer jacket of the cable (down to bare conductor) and placing the thermojunction in direct contact with the top surface of the cable conductor and covering the slit with a double wrap of glass fiber reinforced electrical tape (Glass Cloth Electrical Tape, Class "B" Insulation, V2 in. wide, 3M Corporation, Item No. 27) for a mixdmum distance of 3-1/2 inches.
Thirty-nine 24
- gauge, Type K, Chromel-Alumel electrically welded thermocouples (Special Limits ofError: kl.l C, purchased with lot traceability) were similarly secured to the cables within the cable tray assembly.
A representative sample of the thermocouple wire used in the cable tray test article was calibrated after the test procedure.
One thermocouple was located on each of the three conductors in each system (except the cable tray and 5 in. conduit having four conductors) at the mid-point of the assembly, and at both ends ofthe assembly (36 in. leR and right ofmid-point).
The 5 in. conduit having four conductors was similarly instrumented,
- however, the fourth conductor had no thermocouples installed.
The cable tray assembly was instrumented with a total of thirty-nine thermocouples (thirteen located at the mid-point ofthe cable tray, thirteen located 36 in. to the ldt and 36 in. to the right ofmid-point) located within the second and third layer of cables.
TEEZMO-LAG INSTALLATIONHIGHLIGHTS Thermo-Lag materials were installed in accordance with the instructions contained in the CPSES Site Procedures referenced in Test Plan, Rev. 4. Short abstracts ofthe instaOation are included herein to clarify speci6c details.
Conduit Sections (LfPin. nonL thickness)
This material was used to construct the 3/4 in., 2 in. and 5 in. diameter raceway
~
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design protective envelopes.
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PAGE 12 of l5 Thermo-Lag/'30-1 Pre&haped Conduit Sections fl/4in. nom. thickness)
This material was used as an overlay on the 3/4 in. and 2 in. diameter raceway design protective envelopes.
Thermo-Lag 330-1 V-ribbed Panels (I/2 in, nom. thickness)
This material was used to construct the cable tray protective envelope.
Thermo-Lag 88M Sublinung Zmuel Grade Material This material was used to pre-caulk all joints, seams and upgraded areas between pre-shaped sections.
Thermo-L ag 83&869Ehmi-Blanket This material was used to construct the cable air drop protective envelopes.
Thermo-Lag 8804N SubHnur~ Tmceel Grade Material This material was used to pr~ulk all joints and seams between 330-660 Flexi-Blanket material and alljoints of330 Flexi-Blanket.
Application Methods Each rigid conduit assembly was clad with Thermo-Lag 330-1 V2 in. (nominal) thick Pre-Shaped Conduit Section Material.
Alljoints and seams were pre-caulked with 330-1 Trowel Grade Material.
The sections installed on the 5 in.
diameter conduit were secured using stainless steel banding material.
The sections installed on the 3/4 in. and the 2 in. diameter conduits were secured using stainless steel tie wire. AGE being clad with V2 in. thick 330-1 P~haped Conduit Sections, 1/4 in. thick (nominal) Pre-Shaped Conduit Section ("overlay")
Material was instaQed on the 3/4 in. and the 2 in. diameter conduits.
Alljoints and seams were pre-caulked with 330-1 Trowel Grade Material and then secured using stainless steel banding.
Finally, Thermo-Lag 350 Topcoat was applied over areas where the 330-1 Trowel Grade Material had been applied followinga 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> (annimum cure time).
The entire cable tray system was clad with Thermo-Lag 330-1 1/2 in. (nominal)
V-Ribbed Panel Material. To prevent sagging ofthe top panels, the cable tray was pre-banded using stainless steel banding.
Aljoints and seams of the protective envelope were pre-caulked with 330-1 Trowel Grade Material and secured with stainless steel bands spaced at 12 in, intervals.
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PAGE 13 of 15 During construction of the cable tray protective envelope, several areas of the envelope vrere reinforced with combinations of stainless steel wire, Thermo-Lag 330-1 Trowel Grade Material and Thermo-Lag 330-69 Stress Skin which vras secured vrith staples.
The areas reinforced included butt joints between panels on the bottom surface of the envelope and the longitudinal seams where the top and bottom panels overlap panel pieces installed at the tray side rails.
The butt joints between panels on the bottom surface vrere "stitched" with stainless steel tie wires on 5 in. centers.
A thin layer of 330-1 Trowel Grade Material (approximately 3/16 in. thick) was next applied extending 5 in. on each side of the butt joints. Stress shin vras cut and vrrapped circumferentially around the envelope to overlap the butt joints by 5 in. on each side.
The stress skin was worked into the trowel grade layer and secured in place with staples and stainless steel tie wire. A shim coat of 330-1 Trowel Grade Material, approximately V16 in.
thick, vras then applied over the stress skin and the tie vrires.
To reinforce the longitudinal seams at the side rails, a 3/16 in. thick layer of 330-1 Trowel Grade Material vras applied over the panels instaQed at the side rails and extending 5 in. tovrards the middle of the tray and both the top and bottom surfaces.
Stress skin was cut and formed into a squared, U-shaped con6guration which was placed over the sides and onto the top and bottom surfaces for a 5 in.
distance.
The stress shin was worked into the trowel grade layer and secured in place with staples and stainless steel tie vrire. A shim coat of 330-1 Trowel Grade Material, approximately V16 in. thick, vras then applied over the stress skin and tie vrires.
Finally, Thermo-Lag 350 Topcoat was applied over all areas vrhere 330-1 Trovrel Grade Material had been applied foQovring a 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> (minimum) cure time.
Each cable air drop assembly vras clad vrith three complete'-wraps of Thermo-Lag 330-660 Flexi-Blanket Material. An overlap of 2 in. - 4 in. was maintained for each wrap.
The overlap area of each wrap vras pre-caulked with Thermo-Lag 330460 Trowel Grade Material and secured with stainless steel bands spaced on 6 in. centers.
The overlap areas vrere positioned 180'om one another.
The completed test specimens vrere placed in the Laboratory's test enclosure and the thermocouples connected to the data acquisition system and their outputs veriGed.
The tests vrere conducted from March 2, 1993, to March 14, 1993, by Herbert W. Stansberry II, project manager, vrith the foQovring persons present at various times:
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PAGE 14 of 15 Renaldo Jeakins Dick Wilson BillRodgers John White Chester Pruett Melvin Quick Kent Broma Deggary ¹ Priest Kerry Hitchcock Connie Humphry Laudeacio Castanon USNRC USNRC USNRC TU Electric TU Electric (Fluor-Daniel Corporation)
TU Electric (Stone &Webster Engineering)
TVA Omega Point Laboratories, Iac.
Omega Point Laboratories, Inc.
Omega Point Laboratories, Iac.
Omega Poiat Laboratories, Iac.
TEST ITEM EQU.
EQU.
VOLTAGE CURRENT (VOLTS)
(AMPS)
EQU.
TEMP
('C)
ROOM CORRECTED TEMP
'URRENT PERCENT
('C)
(AMPS)
DERATING 3C/¹10 in 3/4" Conduit (base) 3C/¹10 Ul 3/4 Conduit (clad) 3C/¹6 in 2 Conduit (base) 3C/¹6 in 2 Conduit (clad) 3C/¹6 in AirDrop (base) 3C/¹6 in AirDrop (clad) 3C/¹6 in 24" Cable Tray (base) 3C/¹6 in 24" Cable Tray (clad) 11.9 11.0 9.96 9.15 10.9 8.12 46,5 39.4 36.0 94.0 74.0 15.9 89.8 89.4 90.5 89.1 89.9 90.9 89.8 90.3 40.3 39.3 40.3 39.3 39.5 40.5 39.5 39.9 39.6 35.9 64.5 93.6 73.8 23.1 15.8 9.34 212 31.6
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PAGE 15 of 15 TEST ITEM EQU.
EQU.
VOLTAGE CURRENT
, (VOLTS)
(AMPS)
EQU.
ROOM CORRECTED TEMP TEMP CURRENT
('C)
('C)
(AM PS)
PERCENT DERATING 750 kCMilin AirDrop (hase) 750 kCMilin AirDrop (clad) 4C 750 kCMilin 5 Conduit (base) 4/C 750 kCMilin 5 Conduit (clad) 521 3.62 2.19 2.08 89.5 402 90.0 39.9 89.4 402 90.0 402 31.8 10.7 The equilibrium current values are single-point measurements performed aRer the system was at equilibrium and the change in current was very low. The Equ.
Temp (equilibrium conductor temperature at the hottest location), and the Room Temp are reported as 60 minute aver'age values.
The Corrected Current values are those calculated in accordance with P 848/D12 IEEE Standard Procedure for the Determination of the Ampacity Derating of Fire Protected Cables~, which corrects, these current values to a room temperature of 40;C and a conductor.
temperature of90'C.
where I Tc Ta Tc Ta a
(Tc'- Ta') x(a+ Tc)
(Tc-Ta) x(a+ Tc')
test current at equilibrium, amperes hottest conductor temperature at center at equilibrium, 'C measured enclosure ambient temperature, 'C normalized current, amperes normalized. conductor temperature
= 90'C normalized ambient temperature
= 40'C 234.5 for copper-a~o 0
L,
Table 2-Dimensions and weights of rlgld steel conduit Nominal or trade size of conduit ln Nominal inside diameter in Customary Inch-pound units Nominal Length Outside wall without diameter thickness coupling in ln ft and in Minimum weight of ten unit lengths with coup lings attached Ib Nominal inside diameter Metric units Nominal Leng th Outside wall without diameter thickness coupling mm mm meters Mlnlmum weight of ten unit lengths with couplings attached kg 3/8 1/2 3/4 1
1 -1/4 1 -1/2 2
2-1/2 3
3 -1/2 5
6 0.493 0.632 0.836 1.063 1.394 1.624 2.083
. 2489 3.090 3.570 4.050 5.073 6.093 0.675 0.840 1.050 1.315 1.660 1.900 2.375 2.875 3.500 4.000 4.500 5.563 6.625 0,091 0.104 0.107 0.126 0.133 0.138 0.146 0.193 0.205 0.215 0.225 0.245 0.266 9'11 -1/2" 9'11 -1/4" 9'11 -1/4 9'11 9'11 9'11" 9'11 9'10 -1/2 9'10 -1/2" 9'10 -1/4 9'10 -1/4" 9e1 Qe 9'10" 518 79.0 105.0 153.Q 201.0 249.0 332.0 527.0 682.6 831.0 972.3 1313.6 1745.3 12.5 16.1 21.2 27.Q 35.4 41.2 52.9 63.2 78.5 90.7 102.9 128.9 154.8 17.1 21.3 26.7 33A 42.2 48.3 60.3 73.0 88.9, 101.6 114.3 141.3 168.3 2.31 2.64 2.72 3.20 3.38 3.51 3.71 4.90 5.21 5.46 5.72 6.22 6.76 3.04 3.03 3.03 3.02 3.02 3.02 3.02 3.01 3.01 3.00 3.00 3.00 3.00 23.36 35.83 47.63 69.40
. 91.17 112.95 150.60 239.05 309.63 376.94 441.04 595.85 791.67 NOTE -Applicable toie~..ces:
Length: ~ 1/0 <n (t B.35 mm) (without coupling)
Outside r',ameter for tra..e sizes 3/8 in through 2 In:k 0.015 in (a 0.3B mm) for triode sizes 2-1/2 ln through 4 ln: a 0.025 ln (k 0.64 mm) for sade sizes 5 and B ln:H%
W.llthickness:
See 7.3.
0 X) W %
W m m -I m~~
Ch A Cl
~Cl%C RmX I
0
+lb Ch I
~ONO
EBASCO SERVICES INCORPORATED PTN-BFJM-96-005 ATTACHMENT 3
REVlSION 0
PAGE 1
of 3
UALuULALlvl'I ou vwv Y
DATE 4-2'/-VO CHKD.
BY W
DATE~b9t a
CLIENT PROJECT SUBJECT REVISION 1 OFS NO.
SHEET~ OF~
Conductor Single 3/c or Triplex C
Single Camhu;hu.
3/c or Txiylm 812 AWG 810 AWG 88 AWG 86 AWG 84 AWG N2 AWG 81/0 AWG 82/0 AWG N4/0 AWG 8250 kcmil 8'350 kcmil 8500 kcmil 8750 kc il f11000 kcmil 81250 kcmil 1.72 1.08 0.679 0.427 0.269 0.169 0.106 0.0843 0.0525 0.0449 0.0320 0.0222 0.0148 0.0111 0.00888 1 ~ 789 1.123 0.706 0.444 0.280 0.176 0.110 0.0877 0.0546 0.0467 0.0333
.- 0.0231 0.0154 0.0115 0.00924 1.72 x 1.25
~ 2.15 1.08 x 1.25
= 1.35 0.679 x 1.25
= 0.849 0.427 x 1.25 = 0.534 0.269 x 1.25 ~ 0.336 0.169 x 1.25 = 0.211 0.106 x 1.25
~ 0.133 0.0843 x 1.25
= 0.105 0.0525 x 1.25 = 0.0656 0.0449 x 1.25 = 0.0561 0.0320 x 1.25
= 0.040 0.0222 x 1.25 = 0.0278 0.0148 x 1.25
= 0.0185 0.0111 x 1.25 ~ 0.0139 0.00888 x 1.25 = 0.0111
- 1. 789 x 1. 25 = 2. 236 1.123 x 1.25
= 1.404 0.706 x 1.25
= 0.883 0.444 x 1.25
= 0.555 0.280 x 1.25
= 0.350 0.176 x 1.25
= 0.220 0.110 x 1.25
= 0.138 0.877 x 1.25
= 0.110 0.0546 x 1.25 = 0.0683 0.0467 x 1.25
= 0.0584 0.0333 x 1.25
= 0.0416 0.0231 x 1.25 ='.0289 1099E/2
yle,~e~
CHKD.
BY CLIENT PROJECT SUBJECT EBASCO SERVICES INCORPORATED DATE 4-2f-fO DATE~62g
!0 REVISION 1 PTN-BFJH-96-005 ATTACHHENT 3
REVISION 0
'96 PAGE 2
of 3
OFS NO.~
DEPT NO.~
X6MX 7~~i Conductor AC/DC Resistance Ratio AC Resistance at 90oC Single Conductor'@uuJM N12 AWG 810 AWG 88 AWG 86 AWG I4 AWG 2 AWG 01/0 AWG 82/0 AWG 84/0 AWG 8250 kcmil 8350 kcmil fbop kcmil
'750 kc il 81000kcmil N1250kcmil 1.0 1.0 1.0 1.0 1.0 1.0 1.001 1.001 1.004 1.005 1.009 1.018 1.039 1.067 1.102 1.0 1.0 1.0 1.0 1.0 1.01 1.02 1.03 1.05 1.06 1.08 1.13 1.21 1.30 1.41 2.15 x 1.0 = 2.15 1.35 x 1.0 ~ 1.35 0.849x 1.0 ~ 0.849 0.534x 1.0 = 0.534 0.336x 1.0 = 0.336 0.211x 1.0 ~ 0.211 0.133xl.ppl~ 0.133 0.105K1.001= 0.105 0.0656xl.004= 0.0659 0.0561x1.005~
0.0564 0.0400x1.009=
0.0404 0.0278x1.018&.0283 0.0185x1.039~0.0192 0.0139xl.067~0.0148 O.plllxl.102~0.0122 2.15 x 1.0
=
1.35 x 1.0 =
0.849x 1.0 =
0.534x 1.0 =
0.336x 1.0 =
0.21lx 1.01=
0.133x 1.02=
0.105x 1.03=
0.0656x1.05=
0.0561x1.06=
0.0400x1.08=
0.0278xl.13=
0.0185x1.21=
0.0139xl.3
~
0.0lllx1.41=
2.15 1.35 0.849 0.534 0.336 0.213 0.136 0.108 0.0689 0.0595 0.0432 0.0314 0.0224 0.0181 0.0157 1099E/3
k',"
i~~iti
- ~a~
CHKD.
BY EBASCO SERVICES INCORPORATED DATE~M DATE~62q ED REVISION PTN-BFJM-96-005 ATTACHMENT 3
REVISION 0
PAGE 3
of 3
EC-096 SHEET 4
OF~2 OFS NO.~~
DEPT NO.~
CLIENT PROJECT SUBJECT G
D (See Table 7.2.2.2a for ac/dc resistance ratios)
Conductor AC Resistance at 90oC 3/C or Triplex Harm~
812 AWG 810 AWG 88 AWG 86 AWG I4 AWG 82 AWG 81/0 AWG 82/0 AWG N4/0 AWG f/250 kcmil 8350 kcmil
'8500 kcmil 2.236 x 1.404 x 0.883 x 0.555 x 0.350 x 0.220 x 0.138 x 0.110 x 0.0683x 0.0584x 0.0416x 0.0289x 1.0
= 2.236 1.0 = 1.404 1.0 = 0.883 1.0 = 0.555 1.0 = 0.350 1.0 = 0.220 1.001=0.138 1.001=0.110 1.004=0.0686 1.005~0.0587 1.009=0.0420 1.018=0.0294 2.236 x 1.404 x 0.883 x 0.555 x 0.350 x 0.220 x 0.138 x 0.110 x 0.0683x 0.0584x 0.0416x 0.0289x 1.0
=
1.0
=
1.0
=
1.0 =
1.0 =
1.01=
1.02=
1.03=
1.05=
1.06~
1.08=
1.13=
2.236 1.404 0.883 0.555 0.350 0.222 0.141 0.113 0.0720 0.0619 0.0449 0.0327 1099E/4
INC.
APPROVED FIRE BARRlERS FOR THE RUClEAR INDUSTRY thermO-hg'30-1 FIRE BARRIER MATERIAL PR 0 PER TIfS PTN-BFJM-96-005 ATTACHHENT 4
REVISION 0
PAGE I
of 2
This brochure presents the major properties of THERMO-LAG in interest for nuclear generating plant application. For additional data not
'resented.
consult TSI.
RADIATIONRESISTANCE 2.12 x 1P rads total 40 year integrated dose After irradiation no degradation in fire resistive properties FIRE PROTECTIVE FEATURES ASTM E-84 Testing for THERMO-LAG 330-1 Flame Spread Rating 5
Fuel Contributed Rating,0
- Smoke Developed Rating
15 ASTM E-84 Testing for THERMO-LAG Primer Flame Spread Rating 0
Fuel Contributed Rating
0 Smoke Developed Rating
5 ASTM E-84 Testing for THERMO-LAG 350-2P Topcoat Flame Spread Rating 5
Fuel Contributed Rating
0 Smoke Developed Rating
0 One-hour and;hTee-hour fire endurance test in accordance with ASTM E-119, and
. ANI/MAERPtest "ANI/MAERPStandard Fire E'ndurance Test Method to Qualify a Protective Envelope for Class 1E Electrical Circuits".
1/2 Inch THERMO-LAGrated one hour 1 inch THERMO-LAG rated three hours
. ASTM E-119 hose stream test on electrical trays and conduit for one and thrcc hour rated THERMO-LAG (2-1/2 minute hose stream application)
~
ASTM E-119 fire tests for structural steel, hangers to determine required THERMO-LAG thickness for onc and three hour rating Tray
.= Conduit 17 percent derating 10.9 percent derating MECHANICAL(PHYSICAI-) PROPORTIES Density wet 10.5 lbs/gallon Density dry 75~3 Ibs/ft3 Dry Weight 1/2 inch thickness (one*our rated) ~ 3.25 Ib/Its Dry Weight 1 inch thickness (three-hour rated) ~ 6.5 Ib/ltz Venter based Tensile strength (75'F) 800 PSI Shear strength (75'F) 1100 PSI Flexural stiffness (75'F) 85 KSI Flexural strength (75'F) 2200 PSI
-Bond strength (75'F) 575 PSI initial Modulus
~~'F) 70 KSI Thermal Conductivity (Unfired. fullcured) 0.1 Btu/hr ft.z'F/
SEISMIC PROPORTY THERMO-LAGhas been qualified by static analysis for a very conservative loading. A value of 7.5g horizontal
~ and 6.0g vertical acceleration, combined biaxially was used for the analysis.
These values bound most nuclear generating plant seismic criteria.
AMPACITYDERATING Ampacity derating tests performed in accordance with IPCEA Publication Number P-54-440 (Second Edition) (to determine cable base ampacity) and NEMA Publication No.
WC51-1975, The following results were obtained (for 40 percent loading):
One-Hour THERMO-LAG Barriers Tray
12.5 pere'ent derating Conduit
6.8 percent derating Three-Hour THERMO-LAG Barriers
10 percent solution 10 percent solution 10 percent solution 5 percent solution (Bulk) 0 (Ilute>ar se
- ><rage Conditions (a
above 32'F and below 100 F
Asbestoes free Non-toxic HEMICALRESISTANCE OF ERMO-LAG 330-1 Water Sulfuric acid Hydrochloric acid Sodium hydroxide Sodium chloride Acetic acid Kerosene Anhydrous Ammonia LNG LPG Methanol C'P ~ C
~l w t ~ l I
~ ~ ~ lwl High humidity Industrial atmosphere (CO> SO> mix)
Salt spray Interior Environmental Conditions High humidity CO> S+ atmosphere mix Chlorine Results: Service life of at least 40 years PTN-BFJH-96-005 ATTACHMENT 4
REVISION 0
PAGE 2
of 2
CHEMICALRESISTANCE OF
~ THERMO-LAG3$0-2P TOPCOAT Frequent Contact Alkali solutions Salt solutions Alcohols Aliphatic hydrocarbons Aromatic hydrocarbons Occasional Contact Fresh water Waste water Mineral oils Vegetable oils Organic acids Mineral acids Oxidizing agents Ketoncs
~
Si,.,
~
260 Brennon Ave.
Sc.
I ouie. Mo. 631 38
~(31 4) 352 8422
~ Telex: 44-2384
~ Telex: 20-8601