ML20207A807

Forwards SER Re Lack of 3 H Fire Rated Penetration Seals in Cable Spreading Room Ceiling/Control Room Floor Assembly at Plant.Present Penetration Seals Acceptable

ML20207A807
Person / Time
Site:	05000000, Pilgrim
Issue date:	03/17/1988
From:	Mccracken C Office of Nuclear Reactor Regulation
To:	Wessman R Office of Nuclear Reactor Regulation
Shared Package
ML20204C423	List: BECO-87-078, Informs That Util Reviewed Current Overall Work Plans for Emergency Preparedness,Per & Requests Removal of Date of 870812 from Tentative Schedule for Exercise at Plant BECO-87-102, Requests That Encl Info Re Northern Reception Ctr Be Forwarded to Regional Director of Fema,Region 1,for Review Per Accepted Procedure ML20204C418 ML20205C915 ML20205C964 ML20205D029 ML20205D176 ML20205D210 ML20205D243 ML20205D381 ML20205D477 ML20205D525 ML20205D559 ML20205D771 ML20205D870 ML20205D886 ML20205D907 ML20205D920 ML20205D964 ML20205E021 ML20205E046 ML20205E090 ML20205E138 ML20205E204 ML20205E272 ML20205E294 ML20205E431 ML20205E627 ML20205E823 ML20205E846 ML20205E872 ML20205E904 ML20205E922 ML20205E970 ML20205E982 ML20205E996 ML20205F005 ML20205F029 ML20205F037 ML20206Q050 ML20206T137 ML20207A115 ML20207A526 ML20207A541 ML20207A577 ML20207A580 ML20207A584 ML20207A596 ML20207A627 ML20207A632 ... further results
References
FOIA-88-198 TAC-66913, NUDOCS 8803240359
Download: ML20207A807 (2)

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M 171368 Docket No.:

50-293 MEMORANDUM FOR:

Richard H. Wessman, Project Director Project Directorate 1-3 Division of Reactor Projects I/!!,NRR FROM:

Conrad E. McCracken, Chief Chemical Engineering Branch Division of Engineering & Systems Technology, NRR

SUBJECT:

SAFETY EVALUATION REPORT CONCERNING LACK 0F 3-HOUR FIRE RATED PENETRATION SEALS IN CABLE SPREADING ROOM CEILING / CONTROL ROOM FLOOR ASSEMBLY AT PILGRIM NUCLEAR POWER STATION (TAC NO. 66913)

Plant: Pilgrim Nuclear Power Station Licensee: Boston Edison Company TAC No.: 66913 Review Status: Complete The Chemical Engineering Branch Safety Evaluation Report of the licensee's resolution of Item A on page 4 of Region ! Inspection Report 87-39 is enclosed (Enclosure 1). Item A pertained to deficient penetration seals in the Cable Spreading Room ceiling / control room floor assembly and the effect of these deficient seals on a 1981 exemption from certain requirements of Appendix R to 10 CFR 50 to provide automatic suppression in the enntrol room. Approval of the exemption was based, in part, on a 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> rating of the ceiling / floor assembly between the Cable Spreading Room and the Control Room.

The licensee presented several technical points supporting their position that the existing penetration seals are satisfactory and that upgrading these seals is not required.

We agree with the licensee and find the present penetration seals acceptable.

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l Our SALP input is provided in Enclosure 2.

We consider our effort on TAC No.

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l onrad E. McCracken. Chief I

Chemical Engineering Branch Division of Engineering & Systems Technology

Enclosures:

(1)SER (2) SALP Report ec:

L. Shao J. Richardson f

D. Kubicki

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D. Mc knald A. Krasopoulos. Region 1

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