ML20084R290

Forwards Tabulation of Accesses to safety-related Bldgs at or Below 601.35-ft Elevation Mean Sea Level,Per 840222 Commitment to Provide Addl Info Re Site Drainage.Info Should Close SER Confirmatory Issue A(2)

ML20084R290
Person / Time
Site:	Braidwood
Issue date:	05/17/1984
From:	Swartz E COMMONWEALTH EDISON CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
References
8665N, NUDOCS 8405220279
Download: ML20084R290 (4)

Text

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[~N ' Commonwealth Edison

/ ) one First Nation 21 Plaza, Chic'go. Illinois O

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( j ]' Addrass R; ply 13: Post Offica Box 767 Chicago, Illinois 60690 May 17, 1984 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Conmission Washington, DC 20555

Subject:

Braidwood Station Units 1 and 2 Site Drainage NRC Docket Nos. 50-456/457 Reference (a): T. R. Tramm letter to H. R. Denton dated February 22, 1984

Dear Mr. Denton:

Reference (a) provided information concerning the effects of local intense precipitation at Braidwood Station and discussed the use of reinforced concrete curbs and administrative controls at various entrances. The Enclosure to this letter provides a tabulation of accesses to safety-related buildings that are at, or below elevation 601.35 ft. MSL (reference elevation 401.35 ft.). In supplement to Reference (a), this information should allow for closure of Confirmatory Issue-A(2) in the Braidwood SER.

Our FSAR will be amended to include the information contained in the Enclosure to this letter as appropriate. Please address any questions that you or your staff may have concerning this matter to this office.

One signed original and fifteen copies of this letter with Enclosure are provided for your use.

Very truly ,7

/ yours, W 7

[j/27%i.- '

E.DoIglasSwar Nuclear Licensing Administrator cc: J. G. Keppler - RIII RIII Inspector - Braidwood 8665N f\

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d I BRAIDWOOD STATION t.

f TABULATION OF ACCESSES TO SAFETY-RELATED BUILDINGS

f. AT OR BELOW ELEVATION 601.35 FT MSL 1

(REFERENCE EL. 401.35 FT)

. NO. LOCATION FLOOD PROTECTION DETAIL i

l 1 Entrance at El. 401'-0" to Concrete pad to El. 402'-0" Unit 1 Safety Valve Room at

, Azimuth 216 .

I 2 Entrance at El. 401'-0" to Concrete pad to El. 402'-0" j Unit 1 Safegy Valve Room.at ,

Azimuth 327 .

1 I

! 3 Entrance at El. 401'-0" to Concrete pad to El. 402'-0" 1 Unit 2 Safegy Valve Room at .

l- Azimuth 324

j. 4 Entrance at El. 401'-0" to Concrete pad to El. 402'-0" Unit 2 Safety Valve Room at l.

Azimuth 213 . .

I 5 Manhole entrance to Unit 1 Concrete curb raising top i Refueling Water Pipe Tunnelt of shaft to El. 402'-8" I top of shaft El. 401'-0".

l z 6 Manhole entrance to Unit 2 concrete curb raising top of  ;

j Refueling Water Pipe Tunnel; shaft to El. 402'-8" *

{ top of shaft El. 401'-0".

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i 7 Access at El. 401'-0" to Concrete pad to El. 402'-0" j Heat Exchanger area in Fuel Handling Building Area 2.

t l 8 Access to Auxiliary Building C9ncrete pad to El. 402'-0" l from Fuel Handling Building -;

5 at El. 401'-0" along Y-row  !

near columns 15 and 21.  :

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! 9 Entrance at El. 398'-0" to ' Concrete pad to El. 402'-0" i

! Radwaste Tunnel (at Transfer

! Pit) from Radwaste/ Service l Building.

10 Entrance to Auxiliary Building Watertight door i diesel oil storage Room 1A at i' El. 381'-6" along L-row' f rom l Turbine Building Unit.l.

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BRAIDWOOD STATION NO. LOCATION FLOOD PROTECTION DETAIL

, 11 Entrance to Auxiliary Building Watertight door diesel oil storage Room 1B at El. 381'-6" along L-row from Turbine Building Unit 1 12 Entrance to Auxiliary Building Watertight door diesel oil storage Room 2A at El. 381'-6" along L-row from Turbine Building Unit 1.

13 Entrance to Auxiliary Building Watertight door diesel oil storage Room 2B at El. 381'-6" along L-row from Turbine Building Unit 2.

14 Entrance to Auxiliary Building None - Rolling steel door diesel generator room #1 at El. 401'-0" along L-row

! from Turbine Building Unit 1 15 Entrance to Adxiliary Building None - Hollow metal door

• diesel generator room #1 at El. 401'-0" along L-row from Turbine Building Unit 1

, 16 Entrance to Auxiliaty Building None - Rolling steel door diesel generator room #2 at El. 401'-0" along L-row from Turbine Building Unit 1 17 Entrance to Auxiliary Building None - Hollow metal door

• diesel generator room #2 at El. 401'-0" along L-row

• from Turbine Building Unit 1 18 Entrance to Auxiliary Building None - Pair hollow metal doors

• at El. 401'-0" along L-row from Turbine Building Unit 1 19 Entrance to Auxiliary Building None - Pair hollow metal doors

• at El. 401'-0" along L-row from Turbine Building Unit 2 4

20 Entrance to Auxiliary Building None --Rolling steel door diesel generator room #2 at El. 401'-0" along L-row from Turbine Building Unit 2 2

o BRAIDWOOD STATION NA LOCATION FLOOD PROTECTION DETAIL 21 Entrance to Auxiliary Building None - Hollow metal door

• diesel generator room #2 at El. 401'-0" along L-row from Turbine Building Unit 2 22 Entrance to Auxiliary Building None - Rolling steel door diesel generator room #1 at El. 401'-0" along L-row from Turbine Building Unit 2 23 Entrance to Auxiliary Building None - Hollow metal door

• diesel generator room #1 at El. 401'-0" along L-row from Turbine Building Unit 2

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3Controlled door (s).

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