ML20126J952

Rev 0 to Structural Steel Analysis for Peach Bottom Generating Station:Calculation 95,Unit 2,3,Turbine Bldg El 116 Ft Clean Clothes Room,Fire Area 114

ML20126J952
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 8506100741
Download: ML20126J952 (5)

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STRUCTURAL STEEL ANALYSIS for PEACH BOTTOM GENERATING STATION I

s Calculation No. 95 Unit 2,3 Turbine Building El. 116'-O" Clean Clothea Room Fire Aree 114 h

F h k $5000277 PDR Prepared by: . _ _ ____ Date: __('_h_Y **((

Reviewed by: __ _____

Revision: 0 7922 West Chester Pike

• Upper Darby, Pa. 19082 * (215) 853 1700

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PEACH BOTTOM JENERATING STATION

1. AREA _DgggRIPTIgN The area under consideration is the Clean Clothes Room on the 116'-O" elevation of the Turbine Building (Fire Area 11j). The bounding walla are constructed of reinforced concrete with an -

average thickness of 1 ft. The total surface area for heat transfer la 1,044 ft2 (see Attachment A for a sketch of the area under consideration).

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There are no combustible liquida or cable traya located in this a rer. .

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There la one door'which enters this area.

geer _ __Elas__ beestien 115 3'-O"x 7'-O" North Wall 4+ g6EEE_EE651EEg Since there are no exposed fixed combustibles in this area, no cases were examined for a general room fire.

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5. RggULTg 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_IBeHEIEHI_ggggugIIntgg 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 11000F. ,

Eirm_Duratien 9ta_1hWis21 91hW1

. I hour ' 10.5 1,018

( 2 houra 8.0 776 3 houra 6.5 630 The distance between the floor and the deepest 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 11000r, 13000F and 15000F at the bottom k.

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' 'c flange of the beam have been determined and tabulated below. For the temperatures greater than 11000F the time required to heat i

the sizes of the beams supporting the ceiling have also been

}. determined.

l' Ilme to_1199 Elmini I

. II 1 91hW1 _W19_t!_29_

I 1100 7,257 -

f- 1300 9,549 38 I

l. 1500 12,042 26 L

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t Unit 2,'3, Turbine Building, Elevation 116'-0" Clear; Cothes Room 1

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Surface Area Calcul& tion Walls North wall (16' x 18') 288 ft 2 East wall ( 9' x 18') 162 ft 2 j 2

South wall (16' x 18') 288 ft West wall ( 9' x 18') 162 ft 2 900 ft 2 t Ceiling ( 9' x 16',) 144 ft 2 2

Total Area for Heat Transfer 1,044 ft f

ATTACHMENT A t

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