ML20087H836

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Forwards Oyster Creek Nuclear Generating Station Generic Analysis of 4160-Volt Switchgear & 460-Volt Unit Substation Cabinets, in Response to SEP Topic III-6, Seismic Design Considerations
ML20087H836
Person / Time
Site: Oyster Creek
Issue date: 03/13/1984
From: Fiedler P
GENERAL PUBLIC UTILITIES CORP.
To: Crutchfield D
Office of Nuclear Reactor Regulation
Shared Package
ML20087H840 List:
References
TASK-03-06, TASK-3-6, TASK-RR NUDOCS 8403220002
Download: ML20087H836 (2)


Text

, -o GPU Nuclear Corporation

.. Nuclear  ::=:r388 Forked River. New Jersey 08731-0388 609 971-4000 Wnter's Direct Dial Number:

11 arch 13,1984 Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch #5 U.S. Nuclear Regulatory Commission Washington, DC 20555

Dear Mr. Crutchfield:

Subject:

Oyster Creek Nuclear Generating Station (OCNGS)

Docket No. 50-219 SEP 'Ibpic No. III-6 Seismic Design Considerations During the integrated assessment of the SEP topics, the NRC staff requested the GPUN representative to demonstrate the structural adequacy of the 4160 volt switchgear panels.

In addition, GPUN was requested to demonstrate that structural integrity will be maintained for internally mounted components. 'Ihe staff indicated that the structural design adequacy of the load path between an electrical component or device through the psnel frame and bracing to the equipment anchorage had not been demonstrated.

The attached report presents the evaluation and results of a seismic analysis of two types of safety-related electrical equipment at the OCNGS; 4160 volt switchgear and 460 volt unit substation cabinets.

Anchor adequacy and internal load path evaluations for both types of the cabinets were conducted.

  1. M i

8403220002 840313 PDR ADOCK 05000219 P PDR GPU Nuclear Corporation is a subsidiary of the General Pubhc Utihties Corporation b

1 Based on analysis provided in the report, the 4160 volt switchgear and 460 volt unit substation cabinets are adequately anchored to withstand the effects of the OBE and SSE. In addition, the internal components of these cabinets are adequately mounted such that their structural integrity will be maintained.

Very truly yours, 1 2 ]

2, --

. iedler Vice President and Director Oyster Creek 1r/0137e cc: Administrator Region I U.S. fluclear Regulatory Commission 631 Park Avenue King of Prussia, Pa. 19406 fiRC Resident Inspectvr Oyster Creek fluclear Generating Station Forked River, N.J. 08731

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