ML17354A432
| ML17354A432 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 03/07/1997 |
| From: | FLORIDA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML17354A428 | List: |
| References | |
| PTN-BFSE-96-006, PTN-BFSE-96-006-R00, PTN-BFSE-96-6, PTN-BFSE-96-6-R, NUDOCS 9703130432 | |
| Download: ML17354A432 (48) | |
Text
Page i HERY Calculation No: PTN BF E---
Title:
D RA EWAY n B X W HE and vi h THERM W LAYER F THERM -LA 77 FIRE BARRIER ATIN XNZTDLL ISSUB No. Description REVXSZONS 9703i30432 970307 05000250 pDR POOCH PDR Fo~ 82A, Rev. 6/94.
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Page ii L T EFFECTIVE PA Calculation No: - BFSE-
Title:
AMpA ITY DERATIN F ABIES in RA EWAY n BOXE WITH THERM -LA 0 n wi h THERM -LA W YER F THERM -LA 770 IRE BARRIER ATIN Page Section Rev. Page Section Rev.
i Cover Sheet 0 fi List of Effective Pages 0 iii Table of Contents 0 1.0 Purpose 0 4 2.0 References 0 5 2.0 References 0 6 2 ' References 0 7 2.0 References 0 7 3.0 Hethodology 0 7 4.0 lsswytions/gases 0 8 4.0 hssumptions/gases 0 8 5.0 Calculation 0 9 5.0 Calculation 0-10 5.0. Cal cul at i on 0 11 5.0 Calculation 0 5.0 Calculation 0 5.0 Calculation, 0 5.0 Calculation 0 15 6.0 Results 0 16 6.0 Results 0 17 6.0 Results 0 18 6.0 Results 0 19 6.0 Results 0 20 6.0 Results 0 21 6.0 Results 0 Form 828, Rev. 6/94
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Page iii TABLE F NTENT CALCULATIONNUMBER -B E- REV.
~SE ~QN Cover Sheet List of Effective Pages Table of Contents 1.0 Purpose 2.0 References 4-7 3.0 Methodology 4.0 Assumptions/Bases 7-8 5.0 Calculation 8-14 6.0 Results 15-21 ATI'A N PA~E$
~G LISTING OF RACEWAYS AND IRIERVENER/
3 HOUR UPGRADE CONDul18 THEIMO-LAG 330-1, Form 82C, Rev. 6/94
il CALCULATION HO. PTN - BF E 0 RSV. ~ SHEET HO .
1.0. ~PR~PSE The purpose of this calculation is to show that the addition of a fixe protective coating (Thermo-Lag 330-1(for 1hr) and Thermo-Lag 330-1 w/layer of Thermo-Lag 770-l(for 3hr)) to the conduits, boxes and cable trays for those cables requiring fire protection in a plant area does not reduce the allowable ampacity to a level lower than the actual ampacity of each cable. Zn addition, this calculation also shows that the addition of a fire protective coating(Thermo-Lag 330-1 w/layer of Thermo-Lag 770-1) to intervening conduits does not reduce the allo~able ampacity to a level lower than the actual ampacity of each cable. The addition of .the new fire protective coating is required to address the NRC generic letter 92-08, "Thermo-Lag 330-1 Fire Barriers".
2.1 Calculation JPN-PTN-BFJM-96-005, Rev. 0, Fire Barrier Ampacity Correction Factors - Extrapolation of Test Results for 3 Hour Barrier 2.2 Calculation PTN-BFJE-93-001, Rev. 0, Ampacity Derating Response to NRC GL 92-08 for Cables Routed in Conduit and Tray with Thermo-Lag 330-1 Fire Barrier System Coating 2.3 FPL Document 5610-E-2000, Turkey Point Plant - Units 3 a 4, Appendix R Essential Cable List, Revision 10, Dated July 1996 2.4 Turkey Point Units 3 and 4, Updated Final Safety Analysis Report(UFSAR)
Revision 13, dated October 1996 2.5 Omega Point Lab Test Reports 0 12340-94583, 95165, 95168, 95246, Electrical Test to Determine the Ampacity Derating of a Protective Envelope for Class 1E Electrical Conduits 2.6 NRC Generic Letter 92-08, Thermo-Lag 330-1 Fire Barriers, Dated 12/17/92 2.7 Turkey Point Units 3 and 4, Technical Specifications, Amendments 191/185, effective September 26, 1996 2.8 5610-E-305, Rev. 44, Cable and Raceway Schedule 2.9 Calculation EC-096, Rev. 1, Cable Ampacity and Voltage Drop Calculation 2.10 Calculation 5177-EF-01, Rev. 2, Cable Ampacity in Duct Bank, Maintained Space Tray, Conduit and Free Air
- 2. 11 Calculation 5177-EF'15, Rev. 1, Cable Ampacity Verifications for Cables Installed in 1 Hour Thermo-Lag 330-1 Covered Conduits (Unit 4 and Common)
MAS-4.JPN FORM 83 Rev. 6/94
0 4I il
- 2. 12 FPL Letter JPNS-PTN-92,-0882, T. P. Heistexman to A. T. Zielonka, Thexmo-Lag 330 Inspection/Nalkdown, dated 8/14/92
- 2. 13 5613-E-417, Revision 1, Penetrations T3C11, T3C21, T3C31
- 2. 14 Vendor Manual AA550, Rev. 3, Instruction 6 Operating Manual - 400 Battery Chax'ger 2.15 5613-E-675, Rev. 3, Vital Inverter Ioadings 2.16 Standard IEEE/ICEA S-135-1-62/P-46-426, Power Cable Ampacities - Copper Conductors, 1962 2.17 'Bechtel Calculation 5177-EF-09, Revision 1, Dated Novembex 10, 1989 2.18 Calculation EC-138, Rev. 4, Switchgear, Load Center and MCC Load Study
'2. 19 Calculation EC-136, Rev. 4, Existing Stationary Battery Cell Siring and Voltage Drop Calculation 2.20 Calculation IC-TP.0011, Rev. 0, EDG 125 VDC Load Calculation 2.21 Thermal Science, Incorporated (TSX) Technical. Note 11781, Rev. 5 2.22 Industrial Testing, Laboratories (ITL) Report .No. 84-10-5, Dated October 1984, 2.23 Bechtel Calculation.5177-265-EF-25, Rev. 1, Dated November 10, 1989 2.24 Calculation 5177-462-E-03, Rev. 1, Station Batteries Loading Study 2.25 5613-E-11, Sh. 1, Rev. 9, Single Line Diagram Electrical 125V DC and 12QV Instrument AC
- 2. 26. 5613-E-12, Rev. 4, Single Line Diagx'am Electrical 125V DC and 120V Instrument AC 2.27 5614-E-11, Sh. 1, Rev. 5, -Single Line Diagram Electrical 125V DC and 120V IasC'rument AC .
~
2.28 -8-12, Rev. 5, Single Line Diagram Electrical 125V DC and 120V Instrument AC 2.29 MN-3.21 Specification, Rev. 5, Installation and,Inspection Guidelines for Thermo-Lag Fire Barrier Material 2.30 Engineering Evaluation GPN-PTN-SEEP-96-011, Rev. 0, Engineering Evaluation for Review of Ampacity Ratings for Power Cables in Conduits and Trays with Thermo-Lag 330-1 covering FORM 83 Rev. 6/94
0 0,
0
CALCULATZOH NQ.
I PTN - B E RBV. ~ SHBRl'O.
2.31 OMEGA POINT LAB Test RePorts ¹11960-97337. 6 97338, AmPacity Derating of Cables Enclosed in Conduit with Thermo-Lag 330-1/770-1 Upgrade Electrical Raceway Fire Barrier System (ERFBS)
- 2. 32 Calculation PTN-BUM-96-028, Rev. 0, Fire Bax'rier Ampacity Correction Factors for T-Lag 330-1/770-1 Assemblies 2.33 FPL Letter L-95-301, "Additional Information - Generic Letter 92-08, Thermo-Lag 330-1 Fire Barriers", dated November 16, 1995 2.34 5610-E-303, Sh. 120, Rev. 2, Panel Schedule 2.35 5610-8-56A, Rev.. 1, Raceway Protection Wrap El. 18'-0>> Area 20 2.36 5610-E-61A, Rev. 4, Raceway Protection Wrap El. 18'-0" Area 18 2.37 5610-E-67A, Rev. 1, Raceway Protecti'on Wrap El. 10'-0" 6, Below Area 9 a 10 2.38 5610-E-100A, Rev. 2, Raceway Protection Wrap El. 14'-0". Area 5 2.39 5610-E-,101A, Rev. 3, Raceway Protection Wrap El. 30'-6" Area 5 2.40 5610-E-107A, Rev. 1, Raceway Protection Wrap El. 14'-0" Area 11 2.41 5610-E-108A, Rev. 1, Raceway Protection WraP El. 30'-6" Area 11 2.42 5610-E-110A, Rev. 1, Raceway Protection Wrap El. 14'-0" Area 12 2.43 5610-E-119A, Rev. 5, Raceway Protection Wrap El. 18'-0" Area 8 2.44 5610-E-124A, Rev. 2, Raceway Protection Wrap El. 18'-0" Area 14 2.45 5610-E-127A, Rev. 3, Raceway Protection Wrap El. 18'-0" Area 10 2.46 5610-E-128A, Rev. 2, Raceway Protection Wrap El'. 30'-0" Area 16 2.47 5610-E-131A, Rev. 3, Raceway Pxotection Wrap All Elev. Area 24 2.48 5610-E-133A, Rev. 6, Raceway Protection Wrap All Elev. Area 17 2.49 5610-E-135A, Rev. 4, Raceway Protection Wrap El. 42'-0" Area 8 2.50 5610-E-150A, Rev. 4, Raceway Pxotection Wrap El. 18'-0>> Area 1 2.51 5610'-E-151A, Rev. 3, Raceway Protection Wrap El. 30'-0" & 31'-0" Area 1 2.52 5610-E-154A, Rev. 3, Raceway Protection Wrap El. 30'-0" Area 2.'53 5610-E-160A, Rev. 4, Raceway Protection Wrap El. 18'-0"'rea 3 2'QS 2.54 5610-E-161A, Rev. 4; Raceway Protection Wrap El. 30'-0" Area 3
-4 . JPN FORM 83 Rev. 6/94
0 I
CALCULATION NO. PTN - BF 8 - - 0 SHEET HO.
2.55 5610-8-183A,, Rev. 1, Raceway Protection Wrap Intake Stxuct. Area 23 2.56 5610-8-626A, Rev. 0, Raceway Protection Wrap North of U3 Turb. Bldg.
2.57 5610-8-629A, Rev. 0, Raceway Protection Wrap North of U3 Turb. Bldg.
Auxiliary Power Upgrade 2.58 5610-8-791A, Rev. 2, Raceway Protection Wrap Area 16 Above 8l. 58'-0>>
2.59 PC/M 96-014, Rev. 0, Thermo-Lag Overlay Upgrades for Indoor Fire Zones C
This calculation is prepared to. evaluate the ampacity rating of power cables in conduits, boxes and cable trays with Thermo-Lag 330-1 (for 1hr) and with Thermo-Lag 330-1 w/layer of Thermo-Lag 770-1 (for 3hr) fire barrier coverings. The population of power cables to be evaluated was determined from an engineering walkdown(Attachment 1) of electrical raceway components required to be protected from the effects of a design basis fire, event and a review of layout drawings(Ref. 2.35-2.58) . In addition the engineering walkdown also identified intervening raceways(Attachment 1) which requixed to be wrapped(only for portions of raceway) due to plant conditions which impacted the implementation of the required fire barrier material installation in accordance with specification MN-3.21(Ref. 2.29) .
Ampacity correction factors for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> Thermo-Lag as determined in Calculations PTN-BFJM-96-005 (Ref. 2.1) and',PTN-BFJM-96-028 (Ref.2.32) will be used in this calculation. The Ampacity correction actors f determined in Calculations PTN-BFJM-96-005 and PTN-BFJM-96-028 are based on testing of Thermo-Lag wrapped raceways performed at Omega Point Laboratories for Texas Utilities Comanche Peak Plant (Reft 2.5) and for Tennessee Ualley Authority Nuclear Plants (Ref. 2.31) .
4.0 T N 8 4.1 Fire protection coatings used for circuits included in this calculation are the Thermo Science, Inc. (TSI) Thermo-Lag 330-1(for 1hr) and Thermo-Lag 330-1 w/layer of Thermo-Lag 770-1(for 3hr) Fire Barrier System (fire wrap) .
4.2 The scope of this calculation applies to conduit, boxes and tray sections inside and outside containment. For cables inside containment, the ambient air temperature is assumed to be 50 'C.
Outside containment, the ambient temperature is assumed to be 40 'C.
- 4. 3 Control and Instrumentation cables are not included in this evaluation because ampacity derating is not of concern fox these types of service.
MAS-4.JPN FORM 83 Rev. 6/94'
0 CALCULATION HQ. PTN - BP REV. ~ SHEET HO.
- 4. 4 This calculation does not size any new cables. Evaluations performed within this calculation use data and tables from the referenced calculations as noted.
4.5 Note that for cable sizing purposes, ampacity is only one factor, along with circuit voltage drop at normal and degraded grid voltage and cable short circuit fault withstand capability. Additionally, cable sizing used 'standard'able sizes which wex'e cables that were already available on site that wexe as large or larger than the designed cable required.
4.6 Note where conduits ax'e fix'e wrapped in a banked configuration, it is assumed that the spacing of'he conduits is such that the cable ampacity must be corrected for conduit grouping.
5.0. TI N 5.1. i Rain fr C 1 s in Wra on i Table 1 lists all Thermo-Iag 330-1(for 1hr) wrapped conduits, identified in Attachment 1, containing power cables. Table 2 lists all Thermo-Lag 330-1 w/layer of Thermo-Lag 770-1(for 3hr) wrapped conduits, identified in Attachment 1, containing power cables. Table 3 lists all Thermo-Lag 330-1 w/layer of Thermo-Lag 770-1(for 3Hr) intervening conduits, identified in Attachment 1, containing power cables. The population of power cables to be evaluated is based on electrical raceways and intervening raceways required to be wrapped per Attachment 1. Power cables included in the raceways were determined by xeview of the Cable and Raceway Schedule (CARS) 5610-B-305 (Ref. 2.8) . The installed power cables, cable conductor sizes and the number of conductors per cable were determined from CARS.
Conductor resistances were determined from Calculation EC-096, Section 7.2.2 (Ref. 2.9) . Load currents were determined from the listed references in Tables 1, 2 R 3.
Operating heat loads (watts per foot) for the cables were calculated as follows:
Watts/ft ~(0 of Conductors) (9 per 1000 ft) (Load Current) /1000 The ampacities for 90'C rated cables were determined from Calculations 517'7-BP-01 (Ref . 2.10) "Cable Ampacity in Duct Bank, Maintained Space Tray, Conduit and Free Air" and EC-096 (Ref. 2.9) "Cable Ampacity and Voltage Drop Calculations." Power cables procuxed to Specifications 5610-B-11 and 5610-B-13 have a maximum rated conductor temperature of 85'C.
The ampacities for these cables were adjusted for rated temperature using the following formula from IEBE/ICEA Standard S-135-1-62/P-46-426 (Ref.
2.16):
MAS-4.JPN FORM 83 Rev. 6/94
0 il
TD'34.5
"'34.5 Tc'/2 Tc' Ta' DELTA + Tc I' I X ampere s Tc - Ta - DELTA TD +
Where:
I 90 C cable ampacity (Ref. 2.10)
Tc 90 C Ta 40'C DELTA TD 0 15 Cg
~ (4/0 AWGg 8KV Cable)
'C, (350 600V'able)
II TD'he 0 O'C, (750 MCM, MCM, 600V Cable)
The 85'C cable ampacity C 85 C 40 C Ta'DELTA 0.15 C, (4/0 AWG, 8KV Cable) 0 C, (350 MCM, 600V Cable)
Therefore, the conductor temperature rating correction factors for 85'C cables are as follow:
0.956'4/0 AWG Cable) 0.956 (350 MCM Cable) 0.956 (750 MCM Cable)
Cable ampacities were derated when the number of conductors in the conduit exceeded three. The following ampacity correction factors were taken from Attachment 5 of Calculation 5177-EF-15 (Ref. 2.11) "Ampacity Verification for Cables Installed in 1 Hour Thermo-lag 330-1 covered conduits (Unit 4 and Common):"
Total Number Ampacity r inP r 3 1.00 4-6 0.80 7.-. 9 0.70 10 - 24 0.70 Where conduits are fire wrapped in a banked configuration, it is assumed that the spacing of the conduits is such that the cable ampacity must be corrected for conduit grouping. Conduit sections which are not wrapped in a banked configuration are not considered to be grouped. Banked conduit section configurations were identified by field walkdowns (Ref. 2.12) .
The following ampacity correction factors were taken from Attachment 5 of Calculation 5177-EP-15 (Ref . 2. 11) "Ampacity Verification for Cables Installed in 1 Hour Thermo-lag 330-1 covered conduits (Unit 4 and Common): "
MRS-4.JPN FORM 83 Rev. 6/94
li il
CALCgXATION BO. P - BF E REV. ~ SHEET BO.
Number of Conduits in Group with Ampaci ty C r inP 0 '4 0.91 0.88 0.87 0.86 Electrical raceways(30'1920, 4J1760 and 4J2096) sections protected with 1-1/4" (Nominal) thickness Thezmo-Lag 330-1 material and designated as xequiring a 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> rated fire barrier will rece'ive an additional wire mesh stress for support, per Pire Protection Evaluation Records attached to PC/M 96-014(Ref. 2.59) . The ampacity correction factor for the above fire barriex'ssembly was conservatively selected by using the correction factor for the conduits wrapped with Thermo-Lag 330-1 w/layer of Thermo-Lag 770-1 in a banked configuration from Calculation PTN-BPJM-96-028 (Ref .
2.32) "Pi'ze Bax'rier Ampacity Correction Factors for T-Lag 330-1/770-1 Assemblies:"
Wrapped Ampacity Crr inP 1 Hx Wrapped(1-1/4" 0. 74 Thickness) Single Conduit Electrical raceways (3 J1712 and 3 J1777) sections protected with 5/8" (Nominal) thickness Thexmo-Lag 330-1 material and designated as requiring a 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> rated fire barrier will receive an additional 3/8"'(Nominal) thickness Thermo-Lag 330-1 material overlay along conduit runs, per Pire Protection Evaluati:on Records attached to PC/M 96-014(Ref.
2.59) . The ampacity correction factor for the above fire barrier assembly was conservatively selected by using the correction factor for the conduits wrapped with 1-1/4"(Nominal) Thermo-Lag 330-1 in a single conduit configuration from Calculation PTN-BPJM-96-005': (Ref. 2.1) "Pire Barrier Ampacity Correction Pactors - Extrapolation of Test Results for 3 Hour Barrier:"
I Wrapped Ampacity nfi rr i nP r 1 Hr Wxapped(5/8" 0.80 Thickness) Single Conduit MAS-4.JPN FORM 83 Rev. 6/94
0 0
CALCULATION 50. 1TN - B F 8 REV. ~ SBEBT 50.
Rated cable ampacities in conduit were calculated as follows:
Rated Amps ~ (Cable Amp.)(Temp. Corr. Fact.) (¹ of Cond. Corr.
Fact.)(Conduit Gxoup. Corr. Fact.)(T-Lag Corr,. Pact.)
Maximum heat loads (watts per foot) for the cables were calculated as follows:
Watts/ft = (¹ of Conductors)(Q per 1000 ft).(Rated Current) /1000 The percentage cable loading between rated ampacity and actual load current'as calculated as follows:
0 Cable Loading 100 (Load Current) /(Rated Ampacity}
The ampacities of cables in conduits wrapped with Thermo-Lag 330-1 w/layer of Thermo-Lag 770-1(for 3hr) fire barrier material were corrected using the following factoxs taken from Calculation PTN-BFR-96-028 (Ref. 2.32)
"Fixe Barrier Ampacity Coxrection Factors for T-Lag 330-1/770-1 Assemblies:"
.Wrapped Ampacity orr ion F r 3 Hr Wrapped 0.82 Single Conduit (<4")
3 Hr Wrapped 0.74 Banked Conduit Rated cable ampacities'n conduit were calculated as follows:
Rated Amps ~ (Cable Amp.)(Temp. Corr. Pact.) (¹ of 'ond. Corr.
Fact.)'(Conduit Group. Corr. Fact.)(T-Lag Corr.
Pact.)'aximum heat loads (watts per foot) for the .cables were calculated as follows:
Watts/ft ~ (¹ of Conductors) (0 per 1000 ft) (Rated Current)2/1000 The percentage cable loading between rated ampacity and actual load current was calculated as follows:
' 100(Load Current} /(Rated Ampacity)
Cable Loading ~
The following conduits which were listed in Attachment 1 contain control, indication, instrumentation and spare cables:
MAS-4.JPN FORM 83 Rev. 6/94
0 0
12 REF.
Q~ND ~IT /AND ~IT QgND~I'~
3A1096 3K1284 4 J1648 84-857 3K1814 4 J1649 3/4" EMT 3J1330 4F1366 3/4" to Alarm 1-1 3 J1336 4J1482 3 F1328 3K1787 4 J1507 3K1818 3K1810 4 J1669 3K1286 4F1326 3 F1376 3K1285 4 F1098 3/4" Control 3 J1644 4K1451 1-1/2" CNTL(4J1702) 3J-753 4 J1781 1" CNTL (4F1003) 3A11 7 1 4F1382 3/4" Light In addition, conduit 3J1611 is embedded in wall and therefore the cables in this conduit are not required to be derated.
A review of the Cable and Raceway Schedule(CARS) 5610-E-305(Ref. 2.8) determined that all of the cables routed in the above listed'onduits are either contxol, indication, instrumentation, space heater or spare cables which do not need to be evaluated for derating(Section 4.3) .
5.2 1 in M h l r Wr The population of gower cables to be evaluated was determined from an engineering walkdown (Attachment 1) of electrical raceway components required to be protected from the effects of a design basis fire event. In addition the engineering walkdown also identified intervening raceways(Attachment 1) which required to be wrapped(only for portions of raceway) due to plant conditions which impacted the imglementation of the required fire barrier material installation in accordance with specification MN-3.21(Ref. 2.29) . This walkdown only identified one tray section 3KFT10(West Penetration Room) which required to be wrapped with Thermo-Lag 330-1 w/layer of Thermo-Lag 770-1(for 3Hr) . A review of the Cable and Raceway Schedule (CARS) 5610-E-305 (Ref . 2. 8) determined that all of the cables in this tray were either control, indication or instrumentation cables which have a negligible e ffect and are not included.
The ampacities of cables in trays wrapped with Thermo-Lag 330-1(for 1 Hr) fiie barrier material were corrected using the following factors taken from Calculation PTN-BPJM-96-005 (Ref. 2.1) "Pire Barrier Ampacity Correction Factors - Extrapolation of Test Results for 3 Hour Barrier:"
Wrapped Ampacity n
i rr ion F 1 Hr Wrapped 0. 69 Cable Tray The ampacities of cables in trays wrapped with Thermo-Lag 330-1 w/layer of Thermo-Lag 770-1(for 3 Hr) fire barrier material were corrected using the MAS-4 . JPN FORM 83 Rev. 6/94
0 0
CALCULATION 50. PTH - BF E REV. 0 SHEET 50. ~y REF.
following factors taken from Calculation PTN-BFBf-96-028 (Ref. 2.32} >>Fire Barrier Ampacity Correction Factors for T-Lag 330-1/770-1 Assemblies: >>
Wrapped Ampacity' n i i r F 3 Hr Wrapped 0.52 Cable Tray Maximum watts per foot and percent .cable loading were calculated as previously discussed above for conduits.
5.3 i in M h 1 for l in Wr B x Table 4 lists all Thermo-Lag 330-1(for lhr) and Thermo-Lag 330-1 w/layer of Thermo-Lag 770-1 (for 3hr} wrapped pull boxes, terminal boxes and junction boxes, identified i.n Attachment 1, containing power cables. The population of .power cables to be evaluated was determined from an engineering walkdown (Attachment 1) of electrical raceway components required to be protected from the effects of a design basis fire event.
Power cables, located in the conduits 'were determined by review of the Cable and Raceway Schedule (CARS) 5610-E-305 (Ref. 2.8) . The installed power cables, cable conductor sizes and the number of conductors per cable were determi'ned from CARS. Control cables and spares have a negligible effect and are not included. Conductor resistances were determined from Calculation EC-096 (Ref. 2.9) . Load currents were determined from the listed references in Table 4.
The ampacities for 90'C rated cables were determined from (Ref . 2.10) "Cable Ampacity in Duct Bank, Maintained Space Calculations'177-EP.-01 Tray, Conduit and Free Air" and EC-096 (Ref. 2.9) "Cable Ampacity and Voltage Drop Calculations." Power cables procured to Bechtel Specifications 5610-E-11 and 5610-E-13 have, a maximum rated conductor temperature of 85'C. Boxes were not included in the above calculations, therefore the ampacity for cable tray are applied to the wrapped boxes.
The application of the cable tray ampacity to boxes has been determined to be valid based on the geometric similarity. Boxes are not expected to be as heavily l'oaded as the tested cable tray due to the shape of the boxes and the. spacing between cables.
The:ampacities of cables in boxes wrapped with Thermo-Lag 330-1 w/layer of Thermo-Lag 770-1,(for 3 Hr) fire barrier material were corrected using factors taken from Calculation PTN-SPAM-96-028 (Ref. 2.32) "Pire the'ollowing Barrier Ampacity Correction Factors for T-Lag 330-1/770-1 Assemblies:"
MAS-4.JPN FORM 83 Rev. 6/94
0 CALCDLATION 50. PTN - BF B - - 00 SHEBT BO.
Wrapped Ampaci ty o r ion Fac or 3 Hr Wrapped 0.70 Boxes The following boxes which were listed in Attachment 1 contain control, indication, instrumentation and spare cables:
~BX~E PB3711 PB3836 TB31 1 7 A review of the Cable and Raceway Schedule (CARS) 5610-E-305 (Ref . 2. 8) determined that all of the cables routed in the above listed boxes were either control, indication, instrumentation or spare cables which have a negligible effect and are not included in this calculation.
5.4 In ivi 1 1 1 i The following circuits have not been specifically identified in previous calculations but will affect essential equipment in the PTN Safe Shutdown Analysis.
5.4 1.
~ The Engineering walkdown(Attachment 1) of electri.cal raceway components required to he protected from the effects of a design basis fire event identified conduit 3K1814, located in the West Penetrati.on Room, as requiring to be wrapped with Thermo-Lag 330-1 w/layer of Thermo-Lag ,770-1(for 3hr) . The saf e shutdown cable (3V455C/G) in conduit 3K1814 exits the conduit and is routed in free air to Penetx'ation T3C11. In order to protect this cable in this axea from the effects of a design basis fire and because of space limitations around the penetration T3C11(cable congestion) it was determined that a box wi.ll be mounted around the penetration T3C11 and will be wrapped with Thermo-Lag 330-1 w/layer of Thermo-Lag 770-1.
This wrap will also include poxtions of cabl'e tray 3KFT10 which runs directly below the Penetration T3C11. The cables for cable tray 3KFT10 were reviewed in Section 5.2 of this calculation. A review of the Cable and Raceway Schedule (CARS) 5610-E-305 (Ref . 2. 8) and drawing 5613-B-417, "Penetrations T3C11, T3C21, T3C31", (Ref. 2.13) determined that all of the cables connected to Penetration T3C11 were either control or instrumentation cables which have a negligible effect and are not included.
MAS-4.JPN FORM 83 Rev. 6/94
0 il 0
GLLCUZATIOH 50. PTN - BF B - - 0 RBV 0 0 6.0. ~RE gL~
The following tables include the results of the individual calculations prepared in Sections 5.1, 5.2, and 5.3 above.
MAS-4.JPN FORM 83 Rev. 6/94
~ '
NIPACITYDERATING FOR CABLES R COHDUlT WRAPPED WITH THERIADLA0339.1 PTH.BFSE88 iei. REV.8 SHEET HO. 'Ii CABLE RACEWAV COND. CABLE LOAD LOAD OPBL CABLE TBIP COND ORPIHO T.LAO RATED % CABLE 812E SITE reelf 888'lPS tome WIFT AMPACITY C. F C.F C.F. C.F. AISPS LOADINO 300104 3JI?12, I 2.1IC 02110 23JN 130 I 0JN 72.80 300131 0 3J 1712 I 3 2.1IC 03380 IJN ez I 0.80 54.32 300147 P 3JI?12 1, 3 2-1IC 0 0.'l330 15.40 179 1 0JN 10024 2.8? 1538 3D0147 0 3JI?12 I 2.1IC 0 0.1330 15AO 179 I 0JN 100.24 2.8? 1538 3YOI A 3JI .'1~ I 2-1IC 0 0.1380 8250 179 . I I OJN 11456 3TOI P 3Jf 2-IIC oooo QJ)889 9?JN 278 I 0.80 177.92 3D 2328 R 3J f820 00 0.1100 . 3JN I 0.74 105.8?
30232S 8 3JI 920 00 0.1100 3JN I 0.74 105JI?
30232S P 3) IS20 1 21IC 0 0.1330 14.15 00533 ~
lze I 0.74 92.72 1528 302328 RAL 3J1920 1 00 0.1100 3JN I 0.74 105JI?
302328 P 4JI?80 1 2.1IC 0 0.1330 14.15 Ize 1 0.74 105.97 1335 30232S RAL 4JI?80 I 2-1IC 0 0.1330 1416 178 I 0.74 10597 1335 4D0104 0 4J1780 I 2.1IC IL5340 24JN I 0.74 44.40 2.11 4D0104 R 4J 2098 I 4 03380 24JN IL3871 I Ol4 9820 LQAD AMPS MURCE
- 1) IC.TP40) I, REV. OOIEFEREHCE 220)
- 2) 61774M43, REV. IIREFEREHCE 224)
- 3) 6813E ll,KI,REV.S; I <<?WN.12KV -825AOIEFEREHCE225)
- 4) PTHJIFJE.8340), REV. QREFEREHCE 22I
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4I AMPACITTDEBATING FOR CASLES ROUTED IH INTERVENING CONDUIT WRAPPED WITH THERMO LAG 3301 WI LATER THERMGLA0229 1 PTN.BFSE Sf 44g Ral. 8
'fABLES SHEET NO. la COND. CABLE CABLE LOAD LOAD OPED, CASLE TEMP. COND GRP/NG T LAG RATED MAIL % CABLE SIZE SIZE sosll SSS'MP S Sow's W/FT AMPACITT C.F. C.F C.F. C.F.. AMPS W/FT LOADING 38541 S 3A'l835 3 l4C 10 lA040 359 0.82 2952 3.81 12.18 3A1 835 3 14C 10 1A040 5.98 0.1508 1 OJ/2 20.88 385412 SA1 838 3 14C 10 1A040 6.99 I 0.82 2952 380112 3.1/C 760 0.0224 200.00 0.74 392.87 10.83 380112 3A462 3 3.1/C 150 0.0224 200.00 0.74 397.87 3F 1331 3 2*1/C 0000 0.0889 8330 278 JHI 0.74 144.83 2.89 5752 4T02 2 IIC 278 Jm 0.74 144A3 5752 3F 1331 3 12/C ILO971 97 1 0.74 QL53 122 3F 1340 3 21IC 4 0.3380 24J/0 12 K3871 .89 0.24 6053 1.72 47AS 4705 1340 3 2.1/C 4 0.3380 24J/0 13 03871 91 0.74 QL53 1.22 47AS 4T06 3F 1340 3 2 1IC 0000 OJSSS 83K 18 228 0.74 144 J/3 5252 3F 1346 3 2 I/O 0 0.1380 82%I 179 1 0JI2 14S.28 3JIBOB 3 3 1/C 2 02130 8558 17 .88 0.74 84J/8 458 . 77.44 3T02 3J1871 3 12/C 4 03380 12.02 OJ$ 71 OJ/2 55.88 21.59 3T05 3J 1871 3 4 IL3380 12' IUI971 97 1 0.82 65.88 4T02 3J1871 3 03380 12.02 OJS71 91 21.59 4Y06 3J 1821 3 1 2/C 4 03380 1202 OJS71 1 0.82 65.89 2158 300105 3J1764 3 2 IIC 0 0.1380 QUM 179 1 OJ/2 148.28 3S.15 400107 4f 1373 3 2 02110 QMO IJ550 . 130 1 0.82 10850 400101 4F 1374 3 2.1IC 2 02110 60.00 I 0.24 9820 3.91 51.98 4F 1378 3 1.3/C 10 lA040 1 0.82 23.82 11.14 4F1378 3 14C 10 1A040 0.82 23.82 1.51 12.70 4I02 4J /BOB 3 2.1IC 0000 OJSSS 12 12700 278 94 0.74 154.70 4JIBOB . 3 2.1/C 0000 OJN/89 12 12988 22S JJ4 0.74 164.70 82.70 380716 4J1815 3 114JM 10 2.8883 I 0.82 227 JHI 10.74 50.01 400109 4JI738 3 2 1/C 2 0.2110 33.18 1 0.82 IN.BO 31.1 I
0 f
AMPACITYBERATING OR CABLES ROUTED IN INTERVENI WRAPPED WITH THERMO LAG 339.1 Wl LAYER THERMO LAG 778.1 PTN. -898, REV.B TARLE3 SHEET NO. Il RACEWAY CABLE LOAD LOAD CAlLE TENt. COND. GRPING T-IAG RATED MA)L % CAR LE SCH SUB resl1888'MPS towca AMPACITY C.f. C.F. C.F. C.F. AMtl WIFT LOAINN0 400107 P 2 2-llC 02)10 SMO 9 130 4N 4L90 400133 P 4K1438 3 1.2IC 10 nsoo em . 8 2952 235 21.17 LOAD AMPS SOURCE
- 1) EC 139, REV.4: I - SORT)OS 2 + 25) 5l48'SQRT3) - 658AOIEFERENCE218)
- 2) EC-138, REV.4; I- SQRTIZA3 2+ 1.61 ZgAB'SQRT3) <<359AOIEF ERENCE 2.18)
- 3) EC )38, REV. 40)EFERENCE 2.)8)
- 4) 5177~443. REV. ISEF ERENCE 224)
- 8) 58)BE.)Z,REV.4; I WALIZKV-825ABIEFERENCE228)
- 7) 681481,SIL 1,REV.6; I - IONVQAB'SQRT3) - )2024REFERENCE227)
- 8) 6814E.)2, REV.6; I IOSVAIL48'SORT3) - CQAOIEFERENCE228)
- 9) PTNBFJE93OOI,REV.OlREFERENCEX2)
- 10) VENDOR MANUALAA5500IEFERENCE 2.14) ill 6813E-)2, REV.4; I >> IOSKVAIL48'SQRT3) - )202AIREFEREHCE 228)
- 12) BOISE 11, SIL 1, REV. 9; 80% OF BREAKER RATNGI30A) - 24AOIEFERENCE 225)
- 13) 6814E 12, REV. 6: 80% OF BREAKER RATNG)30A) 24AIREFERENCE 228)
- 14) -
5813&1), SH. I, REV.B; I - IOA)KVAI12KV NAIREFEREHCE 225)
- 15) 6814E11,SH.I,REV.B; I- IOOKVN)2KV 8334REFERENCE227)
- 18) 6814E.12 REV.5: I 7.5KVAI.IZKV" 825gREFEREHCE 228)
- 17) EC-138, REV. 4 I>> SORT(39.18 2 34.65 2)tL48'SQRT3) 85QAIREF EREHCE2.18l
~ l 0
0'
AMPACITYOERAT(NG FOR CABLES ROUTED IH SOXES WRAPPED WITH THERMIRAG 3301(FOR 1HR) ANO PTN.BFSE 08008. REV. 0 THERMOUS 330.1 WILAYER THERMOLAG 770 1(FOR SHID TABLE 4 SHEET NO. 20 CABLE RACEVVAV SOX LOAD CABLE T4AO SCHEME NUM 'IZE t COND SIZE RESI1008'MPS Sowoe AhlPC C5. AMPS LOAD 380836 24X24XS 3 l(C 02130 85.58 130 0.70 SI.OO 72.0440 3Y02 24X24XS 2 1IC 0.13SO . SZ,50 179 0.70 12550 49.S 803 3YOS 24X2lXS 2 1IC 0.13 SO 8250 179 0.70 )2550 4Y02 PB4810 24XZlxs 2 1IC 0.1380 8250 I?0 0.70 12550 48.8803 4Y05 PS481S 24X24XB 2.1IC 0.1380 8Z50 170 0.70 12550 49.8803 400108 PS4887 24X20XS 2.1IC 0.1330 1.00 179 0.70 )2550 0.7981 lO0108 PS4887 14X20XB 2 1/C 0.1330 17.70 170 0.70 12550 14.1070 400107 24X20XS 2 1IC 0.2110 60.00 130 0.70 91.00 4D0112 PB 4887 24X20XB 2 1IC 02) IO ZN 130 0.70 91.00 2.1978 480824 24X20XS I 3IC 10 1A040 3.83 38 '.?0 2520 PB4887 14X20XS 1 3IC 10 1A040 3.83 38 0.70 2520 14A048 480814 PB4887 24X20XS 3.1(C 08880 104.60 278 0.70 194.80 53.8099 4OO128 PB4887 Z4X20X8 2-1(C 02110 50.00 130 0.70 91.00 302310 TB?388 2lX24X12 2 1IC 0.1330 3950 170 0.70 126.30 3 1.1253 302320 2lx24X12 2 1IC 0.1330 30AM 179 0.70 12550 31.1253 LOAD AMPSSOURCE PTH4)FJE SM01, REV.O(REFERENCE 22) 581%11. SH.1, REV.0: I - 75KVN 12XV - 825A(REFERENCE 226) 5813E 12. REV. 4; I 7.5KVN.12KV 82.5A(REFERENCE 228) 5814E.11. SH. 1, REV. 6: I -7.5KVAI.12KV 825A(REFERENCE 227) 5814E 12, REV. 6; I 7.SKVN.12KV 826A(REFERENCE 228)
I EC I
138. REV. 4(REFERENCE 2.1I
- SORT(30.18 2+ 3455 ~ 5(AS'SORTS) 8558A(REFERENCE 2.18)
- 7) EC.138.REV.4l I I
45 CALCULATIGH HO. PTN - BF 8 - 9 - 6 RRV. ~ SBEET ~. 21
Conclusion:
The original design selection of power cables for use at Turkey Point Nuclear (PTN) 3 and 4 used conservatism created by the selection of cables using voltage drop and short circuit withstand capability analysis,and then by evaluating worst case scenarios for cable ampacity derating based on cables in a filled tray section. Zn addition to the evaluation of cable sizes by design, to reduce the inventory and purchasing of new cable sizes, cables for several circuits were selected and installed as the next larger 'standard'i.ze if that size met the design and installation requixements and was readily available on site and in the inventory system.
Based on the results of this calculation for derating of cable ampacity for xaceways that are fire protected with Thermo-Lag 330-1(for 1hr) and Thexmo-Lag 330-1 w/layer of Thermo-Lag 770-1(for 3hr) the, cables installed at Turkey Point Nuclear Units 3 and 4 were consexvatively design with adequate margin to provide allowances for ampacity derating which encompass the new fire wrap design installed to meet the Appendix 'R'equirements.
MAS-4 . BPN FORM 83 Rev. 6/94
0 II II
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Page 3 of 3 Listing of IntervenerlInterfering Conduits Thermo-Lag 330-1, 3-Hour Upgrade
- Item Raceway Intervener/ Additional ZQILC
'18 S Inver 1 hr 4J1760 108A N/A 3J1920 N/A 4J2096 N/A PB7368 B-3F-1376-'1" S-4J-1669-.3/4" 1'-6" 3/4" Conduit 6n 1 1/2" Conduit 1'-6" 3/4" Light Conduit 6n 19 N Znver 1 hr 3 J1712 108B N/A 3J1777 108B 21 B Switchgr 3A451 70 B-3A-1171-'3" 3 I 4ll B-3A-1096-2" 3l 4N B-3A-1635-4" 1l; 8ll B-3A-1636"4" 1'-8" 3/4" to Alarm 1-1 3'-4" 22 B Switchgr 3A452 70 3A451 (bk) 24~-2~
3A452 (bk) 24 t 2ll Note: Mditional coverage assumes two layers of Thexmo-Lag 770-1 over existing 3-hour layer of Thermo-Lag 330-1 Done by: Date: ~ X Pl Chkd by: ate /a c
0 ATYPIC)4e~~ Mo. f CA<c ~o: I I~-QFsE-9G-co(. 1 Page 2 of 3 Z.isting of Intervener/Interfering Conduits Thermo-Lag 330-1, 3-Hour Upgrade Raceway Intervener/ Additional XI'9 2l-ea 9 West Pen 3K1814 10 West Pen PB3711 19
.11 S DC Equip 4F1360 101 84-857-1" 3f 4tl SR-'4J-1482-1" 4ff B-4 J- 1507-.2 ff 3f 4lt B-4 J>> 1736-,'2" 4f Qlt B-3 J-3.644-'1 1/2" 4f Qff A-3F-1345-2ff 3f 4ff 12 N DC Equip 4 J1607 (hk) 104 B-4J-1606-3" (hk) 7 I 1'ff B-4J-1606-3" 31 6ff A-3J-1754-2" 6f 8ff A-4J-1615-3" 6f-8" 3/4" EÃV 1f 6'ff 13' DC Equip PB4818 104 14 N DC Equip 3J1618(hk) 104 B-3F-1331-3"(hk) 31 7ff B-3F-1340-3"(bk) 3f 7tl B-3J-1608-2" (hk) 12'-10" B-3J-1644-1 1/2" 3f 6ff B-3J-753-3ff 3 '--6" TB-3117 19"x13"x6" 15 N DC Equip PB3823 104 16 N DC Equip 3J1611 104 17 N DC Equip 4P1331 104
0 ATTACH RE~
CA'.c re: Pew-g~C 96 oog Page 1 of 3 Listing of Intervener/Interfering Conduits Thermo-Lag 330-3.," 3-Hour Upgrade Item Raceway intervener/ Additional 1 Elev/Ves 3ij1330 ZQQR 64 B-3K-1810-1 1/2" C&KRS-12'-6" 2 Blev/Ves 3 J1336 64 3 Elev/Ves ,3K1787 64 4 Elev/Ves PB3836 64 5 Elec Equip 4J1768 25'-4F- 1326- 1 1/2" 3 I 4>>
B-4 J-1835-2" 1'I 9>>.
B-4P-1373-2" 4t 0>>
B-3J-1671-'3" 4I 4>>
S -4P-1098-'2>> (bk) 3 I 4>>
B-4K-1438-'1" 0'-6" 1" conduit (bk) 3 ~ 4>>
6 Elec Equip 4J1769 25 B-4K-1451-1 1/2" 2'-10" B-4J-1781-3/4" 2'-0>>
B-4K-1438-1" 13'-6" B-4P-1382-1" 3 I 4>>
4J"1648-1 1/2"(bk) 11'-2" 4 J- 1649- 1 1/2 " (bk) 11 '2 "
3P- 1328- 1 1/2 " (bk) 11 '2 "
B-4P-1374-2" (bk) 11'-2" B-4P-1366-1 1/2"(bk) 11'-2" B-4P-1376-2" 5I 0>>
7 Elec E4uiy PB4887 25 8 West Pen 3K1284 19 B-3K-, 1818-1>> 3 I 4>>
B-3K-1286-1" 3 I 4>>
B-3K-1285-3" 1I0>>
0 Cl 0