ML20237A963

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Provides Final Results of Revised Calculations Addressing Thermo-Lag Fire Barrier Seismic Capability
ML20237A963
Person / Time
Site: Oyster Creek
Issue date: 08/11/1998
From: Roche M
GENERAL PUBLIC UTILITIES CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
1940-98-20425, NUDOCS 9808170269
Download: ML20237A963 (2)


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GPU Nuclear, Inc.

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U.S Route #9 South NUCLEAR.

Post Office Box 388 Forked River, NJ 08731-0388 Tel 609-9714000 (609)971-4814 August 11, 1998 1940-98-20425 U.S. Nuclear Regulatory Commission Attention: Document Control Desk

- Washington, DC 20555 Gentlemen:

Subject:

Oyster Creek Nuclear Generating Station (OCNGS)

Docket No. 50-219 Facility Operating License No. DPR-16 Thermo-Lag Fire Barrier Seismic Capability

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As previously committed in GPU Nuclear's letter to the NRC dated June 19, 1998 (1940 l 202S5), this lettcr provides the final results of the revised calculations addressing Thermo-Lag fire l

barrier seismic capability.

GPU Nuclear Calculation No. C-1302-814-E540-0CM, Revision 0, has been completed, design verified and issued on July 23, 1998. The scope of this calculation includes Thermo-Lag l

assemblies attached with wire instead of steel bands, assemblies not mounted against a stmetural 1

volume such as a tray, conduit, or electrical box, box configurations around valves, conduit 'T' wraps, and miscellaneous assemblies around supports and eauipment anchor plates.

This calculation also evaluates some assemblies attached with steel bands not covered in GPU Nuclear Calculation No. C-1302-814-E540-003 previously completed and summarized in the above referenced GPU Nuclear letter.

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These two calculations unstitute the structumi evaluation of installed Thermo-Lag configurations at O C N G S.

The results of both calculations have confirmed the seismic capability of these Thermo-Lag installations as originally described in GPU Nuclear's letter to the NRC dated November 1,1995 (C324-95-2315).

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If any additional information is needed, please contact Mr. David J. Distel, Corporate Regulatory Affairs, at (973) 316-7955.

i Sincerely, 3

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'Michae J oche Vice President and Director Oyster Creek

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/DJD cc: Administrator, Region I

- OCNGS Senior Project Manager OCNGS Senior Resident Inspector i

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