ML20126J926

Rev 0 to Structural Steel Analysis for Peach Bottom Generating Station:Calculation 94,Unit 2,3,Turbine Bldg El 116 Ft Counting Room,Fire Area 78E

ML20126J926
Person / Time
Site:	Peach Bottom
Issue date:	05/24/1985
From:	Dewey J, Melly B PROFESSIONAL LOSS CONTROL, INC.
To:
Shared Package
ML20126J788	List: ML20126J783 ML20126J825 ML20126J840 ML20126J858 ML20126J886 ML20126J909 ML20126J926 ML20126J952 ML20126J976 ML20126J990
References
NUDOCS 8506100736
Download: ML20126J926 (5)

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STRUCTURAL STEEL ANALYSIS for PEACH BOTTOM GENERATING STATION Calculation No. 94 Unit 2,3 '

Turbine Building El. 116'-O" Counting Room Fire Area 78E Prepared byt ___ __ , Date: _8" (Y_~_8_(_

Reviewed by: h _ Revision: O A kl 7 1922 West Chester Pike

• Upper Darby, Pa.19082 e (216) 853 1700

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• . A Pmfruional tan Contml Inc.

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PEACH BOTTOM GENERATING STATION 1- eBE6_QEggBIEIlgM The area under consideration is the Counting Room on the 116'-O" elevation of the Turbine Building (Fire Area 78E). The bounding walls are constructed of reinforced concrete with an average thickness of 1 ft. The total surface area for heat transfer la 1,242 ft2 (see Attachment A for a sketch of the area under consideration). .

2. gggggSIlg(E_(Q6plHQ There are no combustible liquida or cable traya located in this area. ,

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There is one door khich enters this area.

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119 3'-O"x7'-O" East Wall

4. C6gEg_gX6HIHgg Since there are no exposed fixed combustibles in this area, no cases were examined for a general room fire.

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15. Eg@ybIf No general room fire was postulated because of the lack of exposed fixed combustibles in the area.

There are no cable traya in this area to preacnt a localized heating exposure to the structural steel.

6. EEEE9I!_9E_IBAHEIEMI_995aEDIIDLE!

This area contains no exposed fixed combustibles. The table below lista the maximum heat release rate for transient

-combustibles for different fire durations which result in an area temperature less than 1100 0F.

Eire _gurntien 926_1hWlm21 91hW1 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> 10.5 1212 2 hourd 8.0 923 3 houra 6.5 750 The distance between the floor and the deepeat beams supporting the ceiling in 16*-8 1/2". The heat release rates required of floor level transient combustible fires to produce plume temperatures of 1100 0F, 13OOO.e and 15000 F at the bottom flange of the beam have been determined and tabulated below. For the temperatures greater than 1100 F the time 2

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required to heat the sizes of the beams supporting the ceiling have also been determined.

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'1100 7,257 -

1300 9,549 38 1500 12,042 26 t

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Q..i Unit 2,3 Turbine Building, Elevation 116'-0" Counting Room Surface Area Calculation Walls North wall (11' x 18') 198 ft 22 East wall 18' x 18') 324 ft 2 South wall 11' x 18') 198 ft West wall 18' x 18') 324 ft 2 j 2

1,044 ft l 2

Ceiling (11' x 18') 198 ft Total Surface Area Calculation 1,242 ft 2

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ATTACHMENT A