ML20042E637
| ML20042E637 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 04/16/1990 |
| From: | Fitzpatrick E GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| TAC-49392, NUDOCS 9004260263 | |
| Download: ML20042E637 (2) | |
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GPU Nuoleer Corporation Ng f
Post Office Box 388 Route 9 South Forked River, New Jersey 08731-03BB 609 971-4000 Writer's Direct Dial Number:
April 16,1990 U.S. Nuclear Regulatory Commission Attention Document control Desk Washington, D.C.
20555 Gentlement Subjects oyster Creek Nuclear Generating Station Docket No. 50-219 Diesel Generator Subjected to Tornado Wind Generated loadings (TAC Nos. 49392 and 49394)
Your letter dated February 26, 1990 transmitted results of the NRC Staff's review of the Oyster Creek diesel generator building and oil tank compartment subjected to tornado wind generated loadings.
The Staff concluded that the walls of the diesel generator building and the oil tank compartment are capable of withstanding the loads generated by a tornado having a wind speed of 168 miles per hour and that the probability of exceedance associated with the tornado wind speed of 168 miles per hour is acceptable.
However, the Staff concluded that GPUN must provide adequate protection of the outside fuel supply line against the potential missile strike or another reliable method of assuring that fuel will be supplied to diesel generators in the event of a supply line break.
The Staff requested that we respond isidicating our intent to comply with the above requirement and that we submit the details of our intended action for Staff review.-
GPUN plans to install a safety grade check valve in the supply line insido the emergency diesel generator fuel tank room coincident with replaceinent or repair of the emergency diesel generator fuel oil tank. We are currently evaluating our ability to accomplish this work in the next refueling outage (23R).
If not accomplished in 13R, the check valve will be installed no later than the end of the 14R refueling outage.
9004260263 900416 PDR ADOCK 05000219 L
P PDC i-C320596 GPU Nuclear Corporation is a subsidiary of the General Pubhc Utihties Corporatson Ip
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. TORNADO WIND CENERATED LOADINGS
- ', FACE 2 Because the supply line is a low pressure system, installation of a check valve is considered to be adequate to prevent the outflow of fuel oil from the fuel tank if a break in the line outside the building occurs. The check valve arrangement will be designed with provisions for testing. The provisions will include a cafety grade gate valve upstream of the check valve.
If you have any questions concerning the above modification, please contact M. W. Laggart, Manager - BWR Licensing, at (201) 316-7968.
Very truly yoursi E. E. Fitap rick Director, oyster Creek EEF/YN/cjg cca Administrator Region I U. S. Nuclear regulatory Commission 475 Allendale Road King of Prussia, PA 19406 NRC Resident Inspector Oyster Creek Nuclear Generating Station Forked River, NJ 08731 Mr. Alex Dromerick, Jr.
U. S. Nuclear Regulatory Commission Mail Station P1-137 Washington, DC 20555
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C320596 1
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