ML20126J858

Rev 0 to Structural Steel Analysis for Peach Bottom Generating Station:Calculation 91,Unit 2,3,Turbine Bldg El 118 Ft Radiation Chemistry Lab,Fire Area 78C

ML20126J858
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 8506100716
Download: ML20126J858 (5)

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o ff hofessional Loss Control, Inc.

STRUCTURAL STEEL ANALYSIS for PEACH BOTTON GENERATING STATION j i

Calculation No. 91 Unit 2,3 Turbine Building El. 116'-O" I

Radiation Chemistry Lab Fire Area 78C i

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I Prepared by: __

Date: _h_(_Y_(

Reviewed by: - M b _ ____ __

Revision: O B506100716 850606 PDR ADOCK 05000277 F PDR 7922 West Chester Pike e Upper Darby, Pa. 19082 * (215) 853 1700

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. Prufruional tone Control. Inc.

PEACH BOTTOM GENERATING STATION 1- eBE6_9EE9BIEII9H The area under consideration is the Radiation Chemistry Lab on the 116'-O" elevation of the Turbine Building (Fire Area 78C).

The bounding walla are constructed of reinforced concrete with an average thickness of 1 ft. The total surface area for heat transfer is 2,334 ft 2 (see Attachment A for a sketch of the area under consideration).

2. ggggggIIggg_LgapIgG There are no combustible.liquida or cable traya located in this area. ,

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There are two doors which enters this area.

9eeE_ __Eise__ Lesatien 117 3'-O"x 7'-O" East Wall 118 3'-O"x 7'-O" South Wall 4+ 9eEEE_EE6EIEE9  !

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

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5. gggghIg No general room fire was postulated because of the lack of exposed fixed combustibles in the area.

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

6- EEEE9I!_9E_IgegsIggI_ggggggIIghgg This area contains no exposed fixed combustibles. The table below lista the maximum heat release rate for transient combustibles for different fire durations which romult in an area temperature less than 11000F. .

Eire _guratien 946_1892m2 7 ggggy 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> 10.5 2,277 2 houra 8.0 1,735 3 houra 6.5 1,409 The distance between the floor and the deepeat beams supporting the ceiling is 16'-8 1/2". The heat release rates required of floor level transient combustible fires to produce plume temperatures of 11000F, 13OO O F and 15000F at the bottom

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flange of the beam have been determined and tabulated below. For the temperatures greater than 1100 0 F the time 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 13 14 38 1500 12,042 9 10 26

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RAP CHEM LAB

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Unit 2,3 Turbine Buil' ding E1. 116'-0" Radiation Chemistry Lab Surface Area Calculation Walls North wall 19' x 18') 342 ft 22 East wall 30' x 18') 540 ft 2 South wall 19'xla') 342 ft 540 ft 2 West wall 30' x 18')

1,764 ft 2 Ceiling (30' x 19') 570 ft 2 2

Total Surface Area for Heat Transfer 2,334 ft

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ATTACHMENT A

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