ML20083H990
| ML20083H990 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 12/20/1983 |
| From: | PROFESSIONAL LOSS CONTROL, INC. |
| To: | |
| Shared Package | |
| ML20083H823 | List:
|
| References | |
| NUDOCS 8401090609 | |
| Download: ML20083H990 (15) | |
Text
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}(( hofessional Loss Control, Inc.
STRUCTURAL STEEL ANALYSIS for LIMERICK GENERATING STATION I
Unit 1 Reactor Building El. 201' Safeguard System Access Area Room 200 Fir.e Area 42A I
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December 20, 1983 8401090609 840104 PDR ADOCK 05000352 E
PDR P. O. Box 446 e Oak Ridge Tennessee 37830 * (615) 482-3541
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F LIMERICK GENERATING STATION 1.
AREA DESCRIPTION The area under consideration is the Safeguard System Access Area, Room 200, on the 201' elevation of the Unit 1 Reactor Building (Fire Area 42A). The bounding walls of the area are of reinforced concrete construction with an average thickness of 2.5 ft.
The total surface area for heat transfer is 8611 tt2 (see Attachment A for sketch and calculation of surface areas).
2.
COMBUSTIBLE LOADING Combustible loading in the area consists of the cable insulation located in cable trays. The total surface area of the cable trays is 684 ft2 with an average combustible loading of 3.5 lbs/ft2 of cable tray surface area.
There are no combustible liquids in the area.
3.
VENTILATION PARAMETERS There are four doors which enter the area. All doors measure 3' wide by 7' high. Two doors are located on the south wall, one door on the east wall and one door on the north wall.
4.
CASES EXAMINED Three cases were examined. Case number one considered all cables in the crea burning simultaneously with one door open. Case number two considered all cables burning simultaneously witn two doors open. Case number three considered all cables burning simultaneously with three doors open.
5.
R,FSULTS Case number one considered all cables burning simultaneously with a 3' x 7' door open. This resulted in a ventilation controlled fire with a heat out-put of 4504 kW, and a duration of 95 minutes. The gas temperature at this time would be 642*F which is below the critical temperature of the struc-tural steel (see Attachment B).
Case numbe'r two considered all cables burning simultaneously with two 3' x 7' doors open. This resulted in a ventilation controlled fire with a heat output of 9008 kW and a duration of 46 minutes. The gas temperature at this 1
time would be 865'F which is below the critical temperature of the struc-tural stgel (see Attachment 8).
Case number three considered all cables burning simultaneously with three 3' x 7' doors open. This resulted in a fuel controlled. fire with a neat output of 12,078 kW and a duration of 3.5 lbs/ft2 4.1 lbs = 35 minutes.
min /ft2 The gas temperature at this time would be 1000*F which is below the criti-cal temperature of the structural steel (see Attachment B).
I The position of cable trays relative to strucutral steel members were i
examined throughout the area in order to assess the potential for localized heating. Cable tray ICCTA is located within 12 inches of member types W30X99, W33X152, W27X84 W24X76 W24X68, W27X114, W21X44, and W21X55.
Attachment C contains the results of calculations performed to determine the respnse of the structural steel members to localized heating. These calculations are conservative because they assume that the entire length of the structural steel member is subjected to 1300*F when, in actuality, only a small section of the steel would be subjected to localized heating. As can be seen from the results, none of the members exceeded the single point failure temperature of 1300*F during the 35 minute exposure period (time required for tray to burn to completion).
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4 Unit 1 Reactor Building El. 201' Safeguard System Access Area Room 200 Surface Area Calculation Walls North wall (61' x 15')
894 ft2 East wall
[(71' + 59') x 15']
1929 ft2 South wall (29' x 15')
393 ft' West wall (123' x 15')
1765 ft2 Ceiling 3630 ft2 Total Surface Area for Heat Transfer 8611 ft2
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ATTACHMENT A
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.e CASE NUMBER:
1 BUILDING:
UNIT 1 REACTOR BUILDING ELEVATION AND AREA DESCRIPTION:
201' SAFEGUARD SYSTEM ACCESS AREA CASE DESCRIPTION:
ONE DOOR OPEN ALL CABLES BURNING 00**********************************************************************
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CEILING / WALL CEILING / WALL Ao Ho Aw Q
THICKNESS MATERIAL (ft)
(ft2)
(ft)
(ft2)
(kW) cu**********************************************************************
2.5 CONCRETE r 21.0 7.0 8611 4504 4
i FIRE IS VENTILATION CONTROLLED hIREDURATION GAS TEMPERATURE (min)
(deg.F) 5 203 10
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257 15 I
299 20 334 25 365 30 393 35 418 40 442 45 464 50 486 55 506 60 525 65 544 70 561 75 579 80 595 85 611 90 1,
627 95 642 o
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.3-CASE NUMBER:
2 BUILDING:
UNIT 1 REACTOR BUILDING ELEVATION AND AREA DESCRIPTION:
201' SAFEGUARD SYSTEM ACCESS AREA i
' CASE DESCRIPTION:
TWO DOORS OPEN ALL CABLES BURNING K
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coww*******************************************************xx********xxx CEILING / WALL CEILING / WALL Ao Ho Aw 0
THICKNESS MATERIAL (ft)
(ft2)
(ft)
(ft2)
(kW)
?t on**********************************************************************
2.5 CONCRETE 42.0 7.0 8611 9008 i
FIRE IS VENTILATION CO'NTROLLED FIRE DURATION GAS TEMPERATURE (Min)
(deg.F) 2 239 4
307 6
359 0
403 10 442 12 478 14 510 16' 540 18 569 20 595 3
22 621 24 645 26 669 28 691 30 713 32 734 34 754 36 774 38 793 40 812 42 830 44 848 46 865 ATTACHMENT B f
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CASE NUMBER:
3 BUILDING:
UNIT 1 REACTOR BUILDING ELEVATION AND AR.EA DESCRIPTION:
201' SAFEGUARD SYSTEM ACCESS AREA CASE DESCRIPTION:
THREE DOORS OPEN ALL CABLES BURNING
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CEILING / WALL CEILING / WALL Ao Ho Aw Q
THICKNESS MATERIAL (ft)
(ft2)
(ft)
(ft2)
(kW)
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2.5 CONCRETE 63.0 7.0 8611 12078 FIRE IS FUEL CONTROLLED FIRE DUR ATION GAS TEMPERATURE (nin)
(deg.F) 5 424 10 568 15 680 20 774 25 855 30 931 35 1000 ATTACHMENT B O+ M Par---
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l CASE NUMBER:
1 BUILDING:
UNIT 1 REACOR BUILDING ELEVATION AND AR.EA DESCRIPTION:
201' SAFEGUARD SYSTEM ACCESS AREA CASE DF.SCRIPTION:
LOCALIZED HEATING OF MEMBER TYPE W21x44 EFFECTS OF LOCAL HEATING ON STRUCTURAL STEEL FIRE TEMPERATURE (deg. F):
1300 WEIGHT OF STEEL MEMBER (lbs./ft):
44 SURFACE OF STEEL MEMBER HEATED (sq.ft./ft):
4.94 TIME STEEL TEMPERATURE (Min)
(deg.F) 5.00 614 10.00 918 15.00 1088 20.00 1182 25.00 1234 30.00 1263 35.00 1280 4
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CASE NUMBER:
2 BUILDING:
UNIT 1 REACOR BUILDING ELEVATION AND AREA DESCRIPTIONr 201' SAFEGUARD SYSTEM ACCESS AREA CASE DESCRIPTION:
LOCALIZED HEATING OF MEMBER TYPE W21x55 EFFECTS OF LOCAL HEATING ON STRUCTURAL STEEL FIRE TEMPERATURE (deg. F):
1300 WEIGHT OF STEEL MEMBER (1bs./ft):
55' SURFACE OF STEEL MEMBER HEATED (sq.ft./ft):
5.01 TIME-STEEL TEMPERATURE (min )
(deg.F) 5.00 511 10.00 795 15.00 977 20.00 1093 25.00 1167 30.00 1215 35.00 1246
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ATTACHMENT C
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CASE NUMBER:
3 EUILDINC:
UNIT 1 REACOR BUILDING ELEVATION AND AREA DESCRIPTION:
201' SAFEGUARD SYSTEM ACCESS AREA CASE DESCRIPTION:
LOCALIZED HEATING OF MEMBER TYPE W24x68 1
EFFECTS OF LOCAL HEATING ON STRUCTURAL STEEL I
FIRE TEMPERATURE (deg. F):
1300 WEIGHT OF STEEL MEMBER (lbs./ft):
68 SURFACE OF STEEL MEMBER HEATED (sq.ft./ft):
6.06 TIME STEEL TEMPERATURE i
(min)
(deg.F) 5.00 502 10.00 783 15.00 965 20.00 1083 25.00 1159 30.00 1209 35.00 1241 o
W ATTACHMENT C
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CASE NUMBER:
4' BUILDING:
UNIT 1 REACOR BUILDING ELEVATION AND AREA DESCRIPTION:
201' SAFEGUARD SYSTEM ACCESS AREA CASE DESCRIPTION:
LOCALIZED HEATING OF MEMBER TYPE W24x76 EFFECTS OF LOCAL HEATING ON STRUCTURAL, STEEL FIRE TEMPERATURE (deg. r):
1300-WEIGHT OF STEEL MEMBER (1bs./ft):
76 SURFACE OF. STEEL MEMBER HEATED ( sq. f t. /f t )':
6.09 TIME-STEEL TEMPERATURE (Min)
(deg.F) 5.00 458 10.00 724 15.00 907 20.00 1031 25.00 1116 30.00 1174 35.00 1214 ATTACHMENT C
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CASE NUMBER:, ;5 BUILDING:
UNIT 1 REACOR BUILDING ELEVATION AND AREA DESCRIPTION:
201' SAFEGUARD SYSTEM ACCESS AREA CASE DESCRIPTION:. LOCALIZED HEATING OF MEMBER TYPE W27x84 EFFECTS OF LOCAL HEATING ON STRUCTURAL STEEL FIRE TEMPER ATURE -(deg. F):
1300 WEIGHT OF STEEL MEMBER (lbs./ft):
84 SURFACE OF STEEL MEMBER HEATED (sq.ft./ft):
6.78 TIME STEEL TEMPERATURE (Min)
(deg.F) 5.00 461 10.00 728 15.00 911 20.00 1035 25.00 1119 30.00 1177
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ATTACHMENT C
CASE NUMBER:
6 BUILDING:
UNIT 1 REACOR BUILDING ELEVATION AND AREA DESCRIPTION:
201' SAFEGUARD SYSTEM ACCESS AREA CASE DESCRIPTION:
LOCALIZED HEATING OF MEMBER TYPE W27x114
- EFFECTS OF LOCAL HEATING ON STRUCTUR AL STEEL FIRE' TEMPERATURE (deg. F):
1300 WEIGHT'0F STEEL MEMBER (lbs./ft):
114
-SURFACE OF STEEL MEMBER HEATED (sq.ft./ft):
6.09 TIME STEEL TEMPER ATURE (min)
(deg.F) 5.00 362 10.00 506 15.00 756 20.00 886 25.00 985 30.00 1060 35.00 1117 l
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ATTACHMENT C
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CASE NUMBER:
7 BUILDING:- -UNIT 1 REACOR BUILDING ELEVATION AND AREA DESCRIPTION:
201' SAFEGUARD SYSTEM ACCESS AREA CASE DESCRIPTION:
LOCALIZED HEATING OF MEMBER TYPE U30x?9 EFFECTS OF LOCAL HEATING ON STRUCTUR AL STEEL I
FIRE TEMPER ATURE (deg. F):
1300 WEIGHT OF STEEL MEMBER (1bs./ft):
99 SURFACE OF STEEL MEMBER HEATED (sq.ft./ft):
7.37 TIME STEEL TEMPERATURE (Min)
(deg F) 5.00 430 10.00 606 15.00 866 20.00 994 25.00 1084 30.00 1147 35.00 1192 O
G ATTACHMENT C
CASE NUMBER:
8 BUILDING:
UNIT 1 REACOR BUILDING ELEVATION AND AREA DESCRIPTION:
201' SAFEGUARD SYSTEM ACCESS AREA
-CASE DESCRIPTION:
LOCALIZED HEATING OF MEMBER TYPE W33x152 EFFECTS OF LOCAL HEATING CN STRUCTURAL STEEL FIRE TEMPERATURE (deg. F):
.1300 WEIGHT OF STEEL MEMBER (1bs./ft):
152 SURFACE OF STEEL MEMBER HEATED (sq.ft./ft):
8.27 TIME STEEL TEMPERATURE (min)
(deg F) 5.00 333 10.00 541 15.00 704 20.00 832 25.00 932 30.00 1011 35.00 1073
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