ML20210C964

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Rev 0 to Analysis of Fire Exposure to Steel Supports Penetrating Fire Barriers
ML20210C964
Person / Time
Site: Mcguire, McGuire  Duke Energy icon.png
Issue date: 01/28/1987
From: Dungan K, Moye C
PROFESSIONAL LOSS CONTROL, INC.
To:
Shared Package
ML20210C807 List:
References
TAC-60320, TAC-60321, NUDOCS 8702090488
Download: ML20210C964 (32)
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ANALYSIS OF FIRE EXPOSURE TO STEEL SUPPORTS PENETRATING FIRE BARRIERS McGUIRE NUCLEAR STATION 4

4 Revision 0 January 28, 1987 Prepared by: J M/_

Ch'arles H. Moye [

Fire Protection Engineer h

[dtv6 Approved by: MnnethW.Dungan P. E.

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President g!=ofen 8'e!@r P

P. O. Box 446 e Oak Ridge. Tennessee 37831 e (615) 482-3541

INTRODUCTION Steel members and snubbe.s used for seismic supports in the Unit 1 and Unit 2 Auxiliary Feedwater Pump Rooms penetrate the 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> fire rated barriers enclosing the Turbine Driven Auxilary Feedwater Pumps. The openings in the fire barrier around the steel are sealed with a 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> rated fire seal.

This calculation was to determine if a fire in either Auxiliary Feedwater Pump Room would cause failure of the seismic support steel and subsequent failure of the fire barrier or the penetration seal.

This evaluation applies the methodology developed for the Limerick Nuclear Power Station, reviewed by Brookhaven National Laboratories and approved by the USNRC. This conservative methodology evaluates both an area fire and localized heating exposures. The predominent fire hazard in these rooms is cable insulation.

Area

Description:

Appendix 1 contains data on the AFW pump rooms including construction, penetrating steel, and combustible materials. Using this information and drawings, MC-1901-02 Rev. 38 MC-1201-04 Rev. 20 MC-1201-04-A Rev. 27 MC-2901-02.01 Rev. 35 cable fire size and room heat loss area were determined as follows:

Unit 1 Heat loss Area Cable Fire Size Turbine Driven AFW Pump Room 1502 Ft2 626 KW Motor Driven AFW Pump Room 7130 Ft2 4208 KW Unit 2 Turbine Driven AFW Pump Room 1476 Ft2 397 KW Motor Driven AFW Pump Room 6973 Ft2 4208 KW In reference to this data it is appropriate to clarify some information not otherwise described in the appendices. The choice of doors used for the 1

Turbine Driven AFW Pump Rooms is not a factor in the fire size calcula-tion. In both cases, the fire is fuel controlled even with the smallest available door open. Thus, with any larger door open, the result of the calculation would not change.

The fire size is in part a function of the' surface area of the fuel that is exposed. Thus, if the surface area of the fuel exposed is constant and the ventilation area of one door satisfies all necessary oxygen requirements for free burning combustion, then opening a larger door or opening addi-tional doors for ventilation will not have an effect on fire size. Also, since the conservative methodology assumes no convective heat losses, the resulting room temperature calculated will not change with increased venti-lation openings either.

For the Motor Driven AFW Pump Rooms, the calculations show that a fi re involving cable is capable of producing a heat output in excess of 13,000 KW. In each case, however, the fire is limited by a single ventilation opening (a door, assumed to be 3' X S.67'). Therefore, the heat output is limited to 4208 KW as shown above.

The cable burning rate [0.1 (lbs./ min)/FT2 ] used in these calculations was taken from the Electric Power Research Institute report NP-1881 dated August, 1982.

Results The calculations are attached in Appendix 2. These are summarized as follows:

Unit 1 Area Temperature Localized Heating Turbine Driven AfW Pump Room 622 F WF 6x15.5 1295'F Motor Driven AFW Pump Roon 799*F ----------

Unit 2 Turbine Driven AFW Pump Room 508 F ---------

Motor-Driven AFW Pump Room 783 F ---------

2

The Turbine Driven AFW Pump Rooms are bounded by both concrete block and reinforced concrete. The calculation procedure used only allows one sur-f ace material to be considered. Therefore, each calculation was run twice, once with block only and once with concrete only. The results showed that the concrete block surface gives the most conservative response and there-fore is used in this evaluation.

The Limerick methodology states that certain separation criteria must be satisfied for steel supports from cable trays. If the separation criteria is not satisfied, then the steel support is subject to a localized heating analysis. The WF6 X 15.5 penetration support beam in the Unit 1 Turbine Driven AFW Pump Room was evaluated for localized heating. Available data indicates that the beam should be evaluated at 1300 F for 32 minutes.

Conclusion Based on this evaluation, a cable fire in any of the AFW Pump Rooms would not cause a failure of the seismic steel thereby precluding a failure of l the fire barrier or the penetration seal.

As shown in Appendix 2, cable fires are calculated as if all cables are burning simultaneously (worst case). The result in each case shows that the integrity of the steel supports and penetrations are not compromised as temperatures never exceed 800*F. For normally loaded structu ral steel, failure criteria would normally be set at 1100*F. However, these penetrat-ing steel members are under small loads (if any, except their own weight),

and therefore, failure temperatures are actually higher. Therefore, the steel will not fail.

Beyond general room fire conditions, localized heating of steel nost be considered. In other words, some steel may be close enough to the burning cable that they are subject to convective and radiative heat transfer from direct plume or flame impingement. As reported in results, only one steel member required a localized heating analysis. The final temperature of this beam under localized heating conditions is 1295*F. However, since the room is protected by a suppression system and since the only load on the 3

~~

' beam is its own weight, the beam ~ is not considered to be in danger of failure (i .e.. . pulling the penetratiori seal from the wall).

Ref: P0-27-01-114 4

-a - .- , ,-------,-,: . + - . - . a 9 h APPENDIX 1 i

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APPENDIX 1 TUR81NE DRIVEN AUXILIARY FEEDWATER PUMP ROOMS Unit 1 Size: 18' 2" x 21' 6" (inside dimensions) 14' 0" ceiling Wall Construction: 8" Concrete block (3 Hr. fire-rated) on three sides, 3' Reinforced concrete on one side Concrete floor Concrete ceiling Openings: Door 6008 3' 0" x 6' 8" 3 Hr. Hollow metal 600C 6' 0" x 7' 0" 3 Hr. Hollow metal 6000 6' 0" x 8' 6" 3 Hr. Hollow metal '

Penetrations: 21/2" Sch.160 Carbon Steel Pipe w/ threaded rod connectors 9' 8" above floor extends 2' 6" outside of room and connects to pipe extends 6" inside of room and connects to 6" beam hanging 4' 6" below ceiling Combusti bles: Lubrication oil - 4 pints Cables 4

4 1-1

APPENDIX 1 Cont'd TURBINE DRIVEN AUXILARY FEEDWATER PUMP ROOMS Unit 2 Size: 19' 2" x 19' 11" (inside dimensions) 14' 0" ceiling Wall Co.struction: 8" Concrete block (3 Hr. Fire rated) on three sides, 3' Reinforced concrete on one side Concrete floor Concrite ceiling Openings: Door 601C 6' 0" x 7' 0" 601D 6' 0" x 8' 6" 601E 3' 0" x 3' 0" locked closed 601F 3' 0" x 3' 0" locked closed 601G 4' 0" x 6' 8" Penetrations: (1) 21/2" Sch.160 Carbon Steel Pipe w/ threaded rod connectors '

10' 7" above floor extends (at an angle) 5' outside of room and connects to a pipe extends (at an angle) inside room and is connected to ceiling 4' south of wall (2) 21/2" Sch.160 Carbon steel pipe w/ threaded rod connectors 9'5" above floor extends (at slight angle) 7'+ outside of room and connects to pipe extends (at slight angle) inside of room and connects to 6" tube steel stand 4' south of wall (3) 4" tube steel 5' above floor extends (at angle) outside of room and mounts to floor 18" north of wall extends (at angle) inside of room and connects to 6" tube steel frame 18" south of wall (4) 2" Sch. 80 Carbon Steel pipe w/ threaded rod connectors 10' 8" above floor extends 6" through wall and connects to pipe extends 18" inside room and connects to 3" beam supported at ceiling 1-2

APPENDIX 1 Cont'd TUR8INE DRIVEN AUXILARY FEEDWATER PtMP ROOMS Cont'd (5) 1 1/2" Sch. 80 Carbon Steel Pipe attached to Seismic compression cylinder 6' 3" above floor extends 3'+ inside room and connects to pipe extends 6" to 6" beam frame outside of room Combustibles: Lubrication oil - 4 pints Cables-1-3

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APPENDIX 1 Cont'd TURRINE DRIVEN AUX. FW PUMP ROOM CABLE INFORMATION Unit 1 18", S', 23 cables 24", 12',73 cables Unit 2 12", 10', 41 cables 12", 10', 30 cables Most typical cables are:

3XJ1261 -

3 conductor 126a. 60 mil PVC 4XJ1261 -

4 conductor 60 mil PVC 12XJ1261 - 12 conductor 80 mil PVC 1 SPA 16G.3 - 1 shielded pan (i.e.) 2 conductors -

2 SPA 16G.3 - 2 shielded pan (i.e.) 4 conductors .

  1. 12AWG Each conductor 30 mil EPR,15 mil Hypalon, Cables have PVC jackets.

30 mil EPR = 10 lb/1000 LF 15 mil Hypalon = 6 lb/1000 LF 15 mil PVC = 6 lb/1000 LF Each conductor of shield pans 15 mil PVC & 20 mil Hypalon, 30 mil PVC jacket.

Suggest that cables be considered equally distributed among trays.

Oconee and McGuire Cable Typical Construction: EPR/Hypalon insulation with PVC jacket BTU /LB RATINGS:

(1) EPR 11,300 Btu /lb (2) Hypalon 10,100 Btu /lb (3) PVC 10,300 Btu /lb 1-4

APPENDIX 1 Cont'd TYPICAL CONDUCTOR CONSTRUCTION:

(1) #12 AWG

a. 30 Mil EPR 10 lbs/1000'
b. 15 Mil Hypalon 6 lbs/1000'
c. 15 Mil PVC 6 lbs/1000' (2) #10 AWG
a. 45 Mil EPR 16 lbs/1000'
b. 15 Mil Hypalon 7 lbs/1000'
c. 15 Mil PVC 7 lbs/1000' NOTES:

(1) The EPR and Hypalon weights are for single conductors.

(2) The PVC weight value reflects a typical weight of a 15 mil Jacket over the cable. .

Ref: File P0-27-01-114 1-5

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APPENDIX 2 I

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APPENDIX 2 UNIT 1 TURBINE DRIVEN AUXILIARY FEEDWATER PUW ROOM Calculation of Total Weight of each Type of Cable 23 cables x 5' + 73 cables x 12' = 991 ft. of cable total 96 cables total If 5 types of cable are equally distributed, then:

4x5' + 15x12' = 200' 19 - 3xJ1261 cables 4x5' + 15x12' = 200' 19 - 4xJ1261 cables 5x5' + 15x12' = 205' 20 - 12xJ1261 cables 5x5' + 14x12' = 193' 19 - ISPA16G.3 cables -

5x5' + 14x12' = 193' 1][ - 2 SPA 16G.3 cables Total ft. cable 991' 96 For 3xJ1261 EPR 3 (200' x 10 lb./1000') = 6 lbs. EPR ,

Hypalon 3 (200' x' 6 lb./1000') = 3.6 lbs. Hypalon PVC (200' x 4 x 6 lb./1000') = 4.8 lbs. PVC -

For 4xJ1261 EPR 4 (200' x 10 lb./1000') = 8 lbs. EPR Hypalon 4 (200' x 6 lb./1000') = 4.8 lbs. Hypalon PVC (200' x 4 x 6 lb./1000') = 4.8 lbs. PVC For 12xJ1261 EPR 12 (205' x 10 lb./1000') = 24.6 lbs. EPR Hypalon 12 (205' x 6 lb./1000') = 14.76 lbs. Hypalon PVC (205' x 5.33 x 6 lb./1000') = 6.56 lbs. PVC For ISPA16G.3 .

PVC 2 (193' x 6 lb./1000') = 2.32 lbs PVC Hypalon 2 (193' x 1.33 x 6 lb./1000') = 3.09 lbs. Hypalon PVC (193' x 2 x 6 lb./1000') = 2.32 lbs. PVC For 2 SPA 16G.3 PVC 4 (193' x 6 lb./1000') = 4.64 lbs. PVC Hypalon 4 (193' x 1.33 x 6 lb./1000') = 6.18 lbs. Hypalon PVC (193' x 2 x 6 lb./1000') = 2.32 lbs. PVC

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APPENDIX 2 Cont'd 4.8 6.0 3.6 4.8 8.0 4.8 6.56 24.6 14.76 2.32 38.6 lbs. EPR Total 3.09 2.32 11,300 Btu /lb.* 6.18 4.64 32.43 lbs. Hypalon Total 2.32 27.76 lbs. PVC Total 10,000 Btu /lb.

10,300 Btu /lb.

27.76 lbs PVC 38.6 lbs. EPR 32.43 lbs. Hypalon 98.79 lbs. Cable Insulation

  • This figure is used for calculations of all cable since it is most conservative.

Surface Area Calculations (Aw)

North Wall = 21.5 x 14.0 = 301.0 sq. ft.

South Wall = 21.5 x 14.0 = 301.0 sq. ft.

East Wall = 18.17 x 14.0 = 254.4 sq. ft.

West Wall = 18.17 x 14.0 = 254.4 sq. ft.

Ceiling = 18.17 x 21.5 = 390.7 sq. ft.

1501.5 sq. ft. Total Surface Area for Heat Transfer Wo Ho Ao ('q.

s ft.)

D0 ORS 6008 3'-0" x 6'-8" = 20.1 600C 6'-0" x 7'-0" = 42.0 6000 6 ' -0" x 8 ' -6" = 51.0 2-2

APPEN0!X 2 Cont'd I

Fire Size Calculation 11,300 Btu x .1 lbs.

- = 1130 Btu / min /ft2 lb min. ft2 5' x 1.5' = 7.5 12' x 2' =2L 31.5 sq. ft. of cable tray 1130 Btu / min /ft2 x 31.5 sq. ft, of cable tray = 35595 Btu / min IKW 35595 D x = 625.9 KW = Q min 56.87 Btu / min Fire Duration Calculation (Fuel Control) '

98.79 lbs. cable insulation = 3.136 lbs./sq. ft.

31.5 sq. ft, of cable 3.136 lbs./ft2 = 31.36 min.

.1 lbs./ min /ft2 2-3

s

, . q-CASE NO.: 1

  • 14UILDING: AUXILIARY BUILDING .-

'a ELEVATION AND AREA DESCRIPTION: EL 716' AUXILIARY FEEDWATER PUMP ROOM

  • CASE DESCRIPTION: ALL CABLES BURNING 4 4 St +
  • ta t *t t ut **** n-+ tt t4 4 t 4 4 ** t t t* + t1 kt*4.*:n t** t 4 **t 4.tt** ** * * *:tt*4 t-54 *:ta + tt4:* + 4 CEILING / WALL Ao Ho Aw Q CEILING / WALL

MATERIAL THICKNESS (FT.) SQ. FT. .FT. SQ. FT. ~ KW

  • * * :4 4 4 * -t * *
  • n t * * *
  • 4:
  • 4 *
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  • 4 * * * + .n t (4 *
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  • 5 4 3 0.7 CONCRETE BLOCK 20.1 6.7 1502 e52e !

j, FIRE IS FUEL CONTROLLED _

FIRE DURATION GAS TEMPNRAhURE '

(MIN.) (DEG. F)

'sl ,

1

,. SSO '

2 SS4 .,

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3 SS7 4 561. <

5 Sis 4  ?*

6 566 7 ~

569 '

9 571 ,.

574

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10 576 11 579 12 581 ,

13 583-14 586 cy 15 580 .

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16 590

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1/ 592 >

id 694 '

19 596 <

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20 598 21 600 ,

22 t>03 23 605 -

24 60/

25 609 26 611' 27 613 2s 61:P 29 617 6 L'd 30 31 62U 32 622

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CASE NU.: 1 BUILDING: AUXILIARY BUILDING ELEVA'ilON AND AREA DESCRIPTION: EL 716' AUXILIARY FEEDWATER PUMP ROUM CASE DESCRIPTION: ALL CABLES BURNING t 4 :+ t * * + ** * * :t 4.c 4 * * * * * * .t :t

  • 4. 4 4.5 t 4. 4 4 t .y + + + 4: 4
  • 4 4- + * * * * *
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  • wi t :# t 4 4 4..t * ** * * * *. 4 * * * +..

CEILING / WALL Ao Ho AW Q-CEILING / WALL THICKNESS MATERIAL (FT.) SQ. FT. FT. SQ. FT. KW

        • tt*****t******t**************4*+.*****+4+++t44.***+:***&**+***************+.*+44 3.0 CONCRETE 20.1 6.7 1502 62e FIRE IS FUEL CONTROLLED FIRE DURATION GAS TEMPERATURE (MIN.) (DEG. F) 1 549 ,

2 553 3 556 4 559 5 561 6 564 3.

7 566

'=

8 568 9 571 10 573 11 575 12 577

, 13 579 14 SG1 l 15 5'd3 16 58S 17 685 1G 58J 19 590 l.

20 592 21 594 22 596 23 597 24 699 l 25 601 26 603 27 604 28 606 29 600 30 609 31 bil

!. 32 613

. _~.-,mm_ -_,_.,_,,_.-_m. , . , .-._,_-_~.-_..m_m__., , , , . - ~ . _ , , _ . - . _ - - . _ , ~ - , . _ . _ _ _ . - - - . _ . - - - . , - . - , _ . , _ . . _ _ _ . . _ . .

APPENDIX 2 Cont'd Localized Heating Evaluation Exposed Beam WF6 x 15.5 No. of cable trays 1 How many trays in stack 1 Surface Area of member exposed 2.31 sq. ft./ft.

Separation Criteria for Steel from Cable Trays Based on PLC Methodology and Study by EPRI For: All cases where: O'< H <1' then: 1500F Exposure 1 Tray l'< H <2' then: 1300F Exposure;H)2,T<1100F 2 Trays l'< H <3' then: 1300F Exposure;H)3,T<1100F 3-5 Trays l'< H <4' then: 1300F Exposure;H)4,T<1100F ,

>5 Trays l'< H <5' then: 1300F Exposure;H>S,T<1100F

^

Where H is the distance from the top of the cable tray (s) to the bottom of the exposed steel.

Since l'< H<2'; then, exposure = 1300*F i

2-6

3-CASE NO.: 1 BUILDING: AUXILIARY BUILDING ELEVATION AND AREA DESCRIPTION: EL 716' AUXILIARY FEEDWATER PUMP ROOM CASE DESCRIPTION: LOCALIZED HEATING OF WF6X15.5 SUPPORT BEAM EFFECTS OF LOCAL HEATING ON STRUCTURAL STEEL .

FIRE TEMPERATURE (DEG F): 1300 WEIGHT OF STEEL MEMBER (LBS./FT): 15.5 SURFACE OF STEEL MEMBER HEATED (SQ. FT./FT): 2.31 TIME STEEL TEMPERATURE (MIN.) (DEG. F) 5 794 10 1092 15 1215 20 1265 25 1286 30 1294 35 1298

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APPENDIX 2 Cont'd

, UNIT 1 MOTOR DRIVEN AUXILIARY FEEDWATER PUMP ROOM Calculation of Total Weight of Each Type of Cabl_e_

11,064 Total Ft. of Cable Assuming Equal Distribution In Any One Tray of 5 Types of Cable for:

Ft. of

(# of Cables x Length ft.) Cable 3xJ1261 Cables =

44+(10x44)+(14x44)+(2x80)+(4x80)+(8x32)+(13x20)+(5x11)+(9x5) = 2196 4xJ1261 Cables =

44+(10x44)+(14x44)+(2x80)+(4x80)+(8x32)+(13x20)+(5x11)+(9x5) = 2196 12xJ1261 Cables =

4+(11x44)+(14x44)+(3x80)+(5x80)+(8x32)+(13x20)+ 20 +(5x11)+(9x5) = 2420 '

1 SPA 16G.3 Cables =

(10x11)+(14x44)'(2x80)+(4x80)+(8x32)+(12x20)+(4x11)+(8x5) = 2116 2 SPA 16G.3 Cables =

(10x44)+(14x44)+(2x80)+(4x80)+(8x32)+(13x20)+(4x11)+(8x5) = 2136 11064' For 3xJ1261 EPR 3(2196'x 10 lb./1000') = 65.88 lbs. EPR Hypalon 3(2196'x 6 lb./1000') = 39.53 lbs. Hypalon PVC 2196' x 4 x 6 lb./1000' = 52.70 lbs. PVC For 4xJ1261 EPR 4(2196'x 10 lb./1000') = 87.84 lbs. EPR Hypalon 4(2196'x 6 lb.fl000') = 52.70 lbs. Hypalon PVC 2196' x 4 x 6 lb./1000' = 52.70 lbs. PVC For 12xJ1261 EPR 12(2420'x 10 lb./1000') = 290.4 lbs. EPR Hypalon 12(2420'x 6 lb./1000') = 174.24 lbs. Hypalon PVC 2420' x 4 x 6 lb./1000' = 58.08 lbs. PVC 2-8

L APPENDIX 2 Cont'd UNIT 1 MOTOR DRIVEN AUXILIARY FEEDWATER PUMP ROOM For ISPA16G.3 PVC 2(2116' x 6 lb./1000') = 25.39 lbs PVC Hypalon 2(2116' x 1.33 x 6 lb./1000') = 33.77 lbs. Hypalon PVC 2116' x 2 x 6 lb./1000' = 25.39 lbs. PVC For 2 SPA 16G.3 PVC 4(2136' x 6 lb./1000') = 51.26 lbs. PVC Hypalon 4(2136' x 1.33 x 6 lb./1000') = 68.18 lbs. Hypalon PVC 2136' x 2 x 6 lb./1000' = 25.63 lbs. PVC 65.88 39.53 52.70 87.84 52.70 52.70 290.4 174.24 58.08 EPR 444.12 lbs. 33.77 25.39 68.18 25.39 -

11,300 Btu /lb.* Hypalon 368.42 lbs. 51.26 25.63 PVC 291.15 lbs.

1103.69 lbs. Cable Total

  • This Figure is used for calculation of all cable since it is most conservative.

Fire Size Calculation 11,300 8tu .1 lbs.

-x = 1130 Btu / min /ft2 lb. min /f t2

.5' x 44' = 22 1.5' x 44' = 66 2' x 44' = 88 l

2' x 80' = 160 2' x 80' = 160 2' x 32' = 64

! 2' x 20' = 40 l

2' x 20' = 40 1.5' x 11' = 16.5 2' x 5' = 10 666.5 Total Sq. Ft. Cable Tray

. 2-9

APPENDIX 2 Cont'd UNIT 1 MOTOR DRIVEN AUXILIARY FEEDWATER PUMP ROOM 1130 Btu x 666.5 ft2 = 753,145 Btu min /ft2 min 753,145E3U-x- I EW = 13243.3 KW = Q min 56.87 Btu min Fire Duration Calculation Vent. Controlled 1103.69 lbs. x 11,300 B1R x l KW x- 1 = 49 min Ib. 56.87 Rtu 4504 KW min Surface Area Calculation Walls Ceiling 54 x 14 = 756 1086.75 31.5 = 441 429.0 34.5 = 483 778.75 18 = 252 92.25 22 = 308 67.5 18 = 252 152.0 17.5 = 245 172.5 44.5 = 623 13.5 19.5 = 273 32.0 9 = 126 2824.25 ft2 12 = 168 8 = 112 19 = 266 T766 ft2 Door go Ho Ao (sq. ft.)

3'-0" x 6'-8" = 20.1 TOTAL AREA 0F BOUNDING SURFACES l

minus the floor 4305 2825 7130 ft2 i Areas Figured From Ref. Drwgs.

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&r1 CASE NO.: 1 BUILDING: AUXILIARY BUILDING ELEVATION AND AREA DESCRIPTION: EL 716' MO TOR DillVEN PUMP HOUM CASE DESCRIPTION: ALL CABLES BUHNING ONE DGOR UPEN

+u6 > + + t tt t 6 + 1 rr > + + + r+ + 6 t t 6 :6.+ t + + t t :6 + + t +. + + t t t +:t * *:+ 6 +n t + -6 t +. + :t t* t + + + 6 + > #

  • 6 F # + + r + t. t + t t r CEILING / WALL Ao Ho Aw Q CEILING / WALL THICKNESS MATERIAL SO. FT. FT. SQ. FT. KW

- ( FT . )

) t-) +: F + t .) t t'+ + + t .+ t 4 + * + + k
  • t'+ 1't t t tt:t :4 f t +. 6 t t t t + +
  • F t1 F t t t + + +:-+ t:+ ) t 4: +:tt t t + t t F S + ) -) *
  • t t i: S t 3.0 CONCRETE 20.1 6.7 7130 42OH FIHE IS VENTILATION CUNTROLLED FIRE DURATION GAG TEMPERATURE (MIN.) (DEG. F) 2 640 4 647 6 654 8 660 10 666 12 672 14 678 16 634 18 6U9 20 694 22 700 24 705 26 711 28 716 30 721 3P 726 34 731 36 73/

38 742 40 747 42 752 44 757 46 /62 ou 767 49 769

APPENDIX 2 (cont'd)

UNIT 2 TURBINE DRIVEN AUXILIARY FEEDWATER PUMP ROOM Calculation of Total Weight of each Type of Cable 41 cables x 10' + 30 cables x 10' = 710 ft. of cable 71 cables total If 5 types of cable are equally distributed, then:

14x10' = 140' 3xd1261 cables 14x10' = 140' 4xJ1261 cables 15x10' = 150' 12xd1261 cables 14x10' = 140' 1 SPA 16G.3 cables 14x10' = 140' 2 SPA 16G.3 cables 710' Ft. Cable Total For 3xJ1261 EPR 3 (140' x 10 lb./1000') = 4.2 lbs. EPR Hypalon 3 (140' x 6 lb./1000') = 2.52 lbs. Hypalon PVC (140' x 4 x 6 lb./1000') = 3.36 lbs. PVC

  • For 4xJ1261 EPR 4 (140' x 10 lb./1000') = 5.6 lbs. EPR Hypalon 4 (140' x 6 lb./1000') = 3.36 lbs. Hypalon PVC (140' x 4 x 6 l b./1000' ) = 3.36 lbs. PVC For 12xJ1261 EPR 12 (150' x 10 lb./1000') = 18.0 lbs. EPR Hypalon 12 (150' x 6 lb./1000') = 10.8 lbs. Hypalon PVC (150' x 5.33 x 6 lb./1000') = 4.8 lbs. PVC For ISPA16G.3 PVC 2 (140' x 6 lb./1000') = 1.68 lbs. PVC Hypalon 2 (140' x 1.33 x 6 lb./1000') = 2.23 lbs. Hypalon PVC (140' x 2 x 6 lb./1000') = 1.68 lbs. PVC' For 2 SPA 16G.3 PVC 4 (140' x 6 lb./1000') = 3.36 lbs. PVC Hypalon 4 (140' x 1.33 x 6 lb./1000') = 4.47 lbs. Hypalon PVC (140' x 2 x 6 lb./1000') = 1.68 lbs. PVC 2 - 12

APPENDIX 2 (cont'd)

UNIT 2 TURBINE DRIVEN AUXILIARY FEEDWATER PUMP ROOM 3.36 4.2 2.52 3.36 5.6 3.36 4.8 18.0 10.8 1.68 27.8 lbs. EPR Total 2.23 1.68 4.47 3.36 11,300 Btu /lb.* 23.38 lbs. Hypalon Total 1.68 19.92 lbs. PVC Total 19.92 lbs. PVC 27.8 lbs. EPR 25.38 lbs. Hypalon 71.10 lbs. Cable Insulation 9

  • This figure is used for calculations of all cable since it is most conservative.

Surface Area Calculations (Aw)

North Wall = 19.92 x 14 = 278.88 sq. ft.

South Wall = 19.92 x 14 = 278.88 sq. ft.

East Wall = 19.17 x 14 = 268.38 sq. ft.

West Wall = 19.17 x 14 = 268.38 sq. ft.

Ceiling = 19.92 x 19.17 = 381.87 sq. ft.

1476.39 sq. ft. Total Surface Area for Heat Transfer Wo Ho Ao (sq. ft.)

D0 ORS 601C 6'-0" x 7'-0" = 42.0 sq. ft.

601D 6'-0" x 8'-6" = 51.0 sq. ft.

601E 3'-0" x 3'-0" = locked closed 601F 3'-0" x 3'-0" = locked closed 601G 4'-0" x 6'-8" = 26.7 sq. ft.

2 - 13

APPENDIX 2 Cont'd UNIT 2 TUR8INE DRIVEN AUXILIARY FEEDWATER PUMP ROOM Fire Size Calculation 11,300 Btu x .1 lbs.

= 1130 Btu / min /ft2 lb. min, ft2 10' x l' = 10 ft2 10' x l' = 10 ft2 -

20 ft2 of cable tray 1130 Btu / min /ft2 x 20 ft2 = 22600 Btu /mi n 1KW 22600 Btu / min x -- = 397.4 KW = Q 56.87 Btu / min Fire Duration Calculation (Fuel Control) 71.1 lbs. cable insulation

= 3.555 lbs./sq. ft.

20 ft2 of cable tray Fuel Controlled Time 3.555 lbs.

sq. ft.

= 35.35 min.

.1 (lbs./ min)/ft2

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APPENDIX 2 Cont'd UNIT 2 MOTOR ORIVEN AUXILIARY FEEDWATER PUW ROOM Calculation of Total Weight of Each Type of Cable 9,074 Total Ft. of Cable Assuming Equal Distribution In Any One Tray of 5 Types of Cable for:

(# of Cables x Length ft.) Ft. of Cable 3xJ1261 Cables = (4x44)+(4x77)+(4x35)+(2x20)+70+(15x70) =1784' cable 4xJ1261 Cables = (4x44)+(5x77)+(5x35)+(2x20)+70+(15x70) =1896' cable 12xJ1261 Cables = (4x44)+(5x77)+(5x35)+20+(2x20)+70+70+(15x70)=1986' cable ISPA16G.3 Cables = (4x44)+(4x77)+(4x35)+20+70+(14x70) =1694' cable.

2 SPA 16G.3 Cables = (4x44)+(4x77)+(4x35)+(2x20)+70+(14x7C) =1714' cables For 3xJ1261 EPR 3(1784' x 10 lb./1000') = 53.52 lbs. EPR Hypalon 3(1784' x 6 lb./1000') = 32.11 lbs. Hypalon PVC (1784' x 4 x 6 lb./iO00') = 42.82 lbs. PVC For 4xJ1261 EPR 4(1896' x 10 lb./1000') = 75.84 lbs. EPR i Hypalon 4(1896' x 6 lb./1000') = 45.50 lbs. Hypalon

! PVC (1896' x 4 x 6 lb./1000') = 45.50 lbs. PVC For 12xJ1261 EPR 12 (1986' x 10 lb./1000') = 238.32 lbs. EPR Hypalon 12 (1986' x 6 lb./1000') = 142.99 lbs. Hypalon PVC (1986' x 4 x 6 lb./1000') = 47.66 lbs. PVC

(

- 2 - 17

8 APPENDIX 2 Cont'd UNIT 2 MOTOR ORIVEN AUXILIARY FEEDWATER PUMP ROOM For ISPA16G.3 PVC 2 (1694' x 6 lb./1000') = 20.33 lbs PVC Hypalon 2 (1694' x 1.33 x 6 lb./1000') = 27.04 lbs. Hypalon PVC (1694' x 2 x 6 lb./1000') = 20.33 lbs. PVC

'For 2SPAlfG.3 PVC 4 (1714' x 6 lb./1000') = 41.14 lbs. PVC Hypalon 4 (1714' x 1.33 x 6 lb./1000') = 54.71 lbs. Hypalon PVC (1714' x 2 x 6 lb./1000') = 20.57 lbs. PVC 53.52 32.11 42.82 75.84 45.50 45.50 238.32 142.99 47.66 EPR 367.68 lbs. 27.04 20.33 54.71 20.33 -

11,300 Btu /lb* Hypalon 302.35 lbs. 41.14 20.57 238.35 lbs. PVC 908.38 lbs. Cable Total

  • This Figure is used for calculations of all cable since it is most conservative.

Fire Size Calculation 11,300 Btu x .1 lbs.

= 1130 Btu / min /ft2 lb. min ft2 2' x 44' = 88 2' x 77' = 154 2' x 35' = 70 2' x 20' = 40 2' x 20' = 40 0.5 ' x 70' = 35 1.5' x 70' = 105 2' x 70' = 140 672 Total sq. ft. cable tray 2 - 18

r-3.

APPENDIX 2 Cont'd UNIT 2 TURBINE DRIVEN AUXILIARY FEEDWATER PUW ROOM 1130 Btu x 672 ft2 = 759,360 Btu min /ft2 min 759,360E3Lu-x- 1 = 13,352.6 KW = Q min 56.87 Btu min Fire Duration Calculation Vent. Controlled 1103.69 lbs. x 11,300 Bt1 x l KW x- 1

49 min 1b. 56.87 gj:L J 4504 KW min Surface Area Calculation Walls Ceiling 56.0' x 14' = 784 ft2 84.0 ft2

19.0' = 266 144.5 8.0' = 112 627.0 10.5' = 145 427.5 9.0 ' = 126 73.5 18.0' = 252 446.9 38.0' = 532 693.5 16.5' = 231 57.0 19.0' = 266 55.0 22.5' = 315 33.75 19.0' = 266 81.0 22.5' = 315 2725.65 ft2 19.0' = 266 36.5' = 511 31.5' = 441 T2TT ft2 o Ho o sq. ft.)

l Door l 3'-0" x 6'-8" = 20.1 l TOTAL AREA 0F B0UNDING SURFACES minus the floor 4247 2726 6973 ft2 Total l

Areas Figured From Ref. Drwgs.

Ref: P0-27-01-114 l

2 - 19

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