ML19210D045

Forwards Comments on Item 3.1.0 of Fire Protection Safety Evaluation.Will Require Licensee to Quantify Pressure Differential Between Areas Where Proposed Penetration Seals Will Be Installed

ML19210D045
Person / Time
Site:	Three Mile Island
Issue date:	11/13/1979
From:	Macdougall E BROOKHAVEN NATIONAL LABORATORY
To:	Ferguson R Office of Nuclear Reactor Regulation
References
NUDOCS 7911200470
Download: ML19210D045 (2)

Text

{{#Wiki_filter:4-BROOKHAVEN NATIONAL LABORATORY ASSOCIATED UNIVERSITIES INC. Ucten. New Ycrk

• 1973 Cepartment cf Nuc!ect Energy (516) 345-2362 November 13, 1979 Mr. Robert L. Ferguson Plant Systems Branch U.S. Nuclear Regulatory Consnission Washington, D.C. 20555

Dear Bob:

Enclosed is Brookhaven National Laboratory's conment on item 3.1.9 of Three Mile Island - Unit 1. Sincerely yours, Edward A. MacDougall Reactor Engineering Analysis EAM:sd enc. cc.: R. Cerbone wo/ enc. R. Hall " W. Kato T. Lee V. Panciera

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THREE MILE ISLAND - UNIT 1 FIRE PROTECTION REVIEW SER Item 3.1.9 - Fire Barrier Penetrations SER Section 3.1.9 indicates that the licensee will seal various types of fire barrier penetrations, including cable crio pipe penetra-tions and building construction joints in various areas of the plant to provide appropriate fire resistance. By letter dated June 12, 1979, the licensee provided test reports and a NEL-PIA (now ANI) Cf rtificate of Approval for the cable and pipe penetration seal designed to be installed at the plant. The test pro-cedure met the staff's cr1teria for penetration seal fire tests, except that no pressure differential was applied across the seal. The licen-see's letters stated that no significant pressure differentitis exist between various plant areas where these seals would be installed. The licensee has not provided any information on the sealing of the building construction joints where the fuel handling building walls abut the reactor building. We will require the lie,ensee to quantify the pressure ditierential between plant areas where the proposed penetration seals will be installed, and to demonstrate by analysis or tests that the proposed penetration will perform as required under such pressure differential and fire conditions. We will further require the licensee to verify that the proposed building construction joint seals have a fire resistance rating of three hours (ASTM E-119), and flame spread and smoke development ratings of 25 or less (ASTM E-84). 13/7 } [4 [[

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