ML20147C771

Request for Addl Info on Fire Protec W/Addl Staff Position Re Fire Rating of Barriers Separating Diesel Generator Rooms from Corridor to Screenhouse

ML20147C771
Person / Time
Site:	Kewaunee
Issue date:	10/06/1978
From:	Schwencer A Office of Nuclear Reactor Regulation
To:	James E WISCONSIN PUBLIC SERVICE CORP.
References
NUDOCS 7810130110
Download: ML20147C771 (4)

Text

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E October 6,1978

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Docket No. 50-305 .-

Wisconsin Public Service Corporation ,

ATTN: Mr. E. W. James-Senior Vice President  :

Post Office Box 1200 *T Green Bay, Wisconsin 54305 Gentlemen:

We have completed our review of your responses to our previous requests for information and staff positions submitted by letters dated July 28, 1978 and August 4, 1978. As a result of our con-tinuing review and as a result of the meeting between your represent-atives and members of our staff on September 28-29, 1978, we have developed a request for additional information which is enclosed with this letter. We are also enclosing an additional staff position regarding the fi;e rating of barriers separating the diesel generator rooms fmm the corridor to the screenhouse.

You are requested to respond to the enclosed request for infor-mation and staff position by October 18, 1978.

Sincerely, t U

A. Schwencer, Chief Operating Reactors Branch #1 Division of Operating ',eactors

Enclosures:

1. Request for Additional Infonnation and Staff Position cc: w/ enclosure See next page l

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i Enclosure j Request for Additional Information and Staff Position  ;

, 1 Kewaunee Nuclear Power Plant 1 4  ;

Docket No. 50-305

40. Provide the results of your evaluation of the adequacy of fire-rated barriers throughout the plant; indicate where j upgrading of barriers is necessary. -(3.1.2, 3.1.8,3.1.26).

41. Provide the results of your evaluation of the separation of safe shutdown cables in conduit from redundant cables.  !

Indicate where modifications will be required. (3.1.15)-

42. Identify the motor control centers for safety-related equipment which require protection from water spray and ,

flooding caused by fire protection system failure or inadvertent actuation and describe the protection to be provided. (3.1.24) 1

43. Identify which fire doors protecting safe shutdown areas '

from large fire hazards or separating areas containing redundant safe shutdown cables or equipment will be electri-cally supervised for fire protection. (3.1.25) I

44. Provide the results of your evaluation of the ability of service water hose lines in the reactor building to reach i significant concentrations of combustibles in safety-related areas.(3.1.29)

45. Provide the results of your evaluation of the specifications I and installation details for unlabeled fire door frames

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to demonstrate that the frames are equivalent to designs described in UL 63, " Standard for Safety of Fire Door -

Frames", Fifth Edition, November 19,1976.(3.1.30) l

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,-- 47. Identify the function of the redundant cables in conduit l

located in the diesel generator rooms. (5.11.3)

48. > Provide the results of your evaluation of the postulated. , ,

causes and consequences of a circulating water pump lube-oil fire. (5.15)

49. Provide the results of your evaluation of means for providing safe shutdown independent of cabling and equipment in the ,

relay room. (4.10.5.6.3)

P32. The fire barriers separating each diesel generator room from the corridor -to the screenhouse are 1-1/2 hour fire rated due to the 1-1/2 hour fire doors and dampers in each barrier. .

l These barriers serve to separate diesel generator oil hazards from redundant service water pump power cables located in the corridor.

I To provide adequate protection for the service water pump power cables from potential diesel generator room exposure I fires, these barriers should be upgraded to a three-hour fire rating or a sprinkler system should be provided for the electrical cables in the screenhouse corridor.

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. Wisconsin Public Service. Corporation -2 -

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cc: Steven E. Keane, Esq.uire

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Foley and Lardner 777 East Wisconsin Avenue Milwaukee, Wisconsin 53202 Kewaunee Public Library j 314 Milwaukee Street j Kewaunee, Wisconsin 54216 4.$  !

Stanley Lacrosse Chairman, Town of Carlton Route 1 Kewaunee, Wisconsin 54216 l

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