ML20207C612
| ML20207C612 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 12/22/1986 |
| From: | Sieber J DUQUESNE LIGHT CO. |
| To: | Rubenstein L Office of Nuclear Reactor Regulation |
| References | |
| ND1NSM:2469, NUDOCS 8612300190 | |
| Download: ML20207C612 (2) | |
Text
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'Af Duquesne L.idit Telephone (412) 393-6000 Nuclear Group ppi gport,PA15077-0004 ND1NSM:2469 U. S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Attn:
Mr. L. S. Rubenstein Director PWR Project Directorate #2 Division of PWR Licensing - A
Reference:
Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 Operating License Extension Gentlemen:
During a
telephone conference call between K.
D.
Grada of Duquesne Light and your staff on December 19, 1986, the following information was requested:
1.
What safety significance does the Surry event have on the previously submitted operating license extension request?
We do not believe there is any nuclear safety significance or correlation between the operating license extension request and the feedwater rupture event that occurred at the Surry Station.
Although this was a
tragic industrial accident, higher energy complete loss of main feedwater feedwater line ruptures and a
have been acceptably analyzed for Beaver Valley.
These analyses documented in FSAR Sections 14.2.5.2 and 14.1.8 respectively.
are In
- addition, we have installed an additional auxiliary feedwater pump which can be powered independent of offsite power sources assumed for this capability in mitigation of and no credit was the referenced accidents.
- Moreover, since Surry's operating history has not approached their current license expiration date, it is clear that some actions must be taken by all utilities in the near-term for employee and plant protection.
These actions would be independent of the status of any licensing issues associated with extending the operating License.
2.
Are you taking any special actions at the plant that bear on the operating license extension request?
Although we have initiated efforts to qualify an ultrasonic examination method on the feedwater pumps' suction piping because of the Surry event, these activities, and the subsequent results of the examinations are not associated with our license extension l\\CdN e612300190 es1ggy PDR ADOCK 05000334 P
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-Belvsr Vality Powsr Station, Unit No. 1 i
Dockst No. 50-334, Lic:nso No. DPR-66 Operating License Extension Page 2 request.
Duquesne Light has had an on-going program, outside of the ISI scope, to examine selected steam piping systems that have high moisture content due to another industrial event involving a
this class of lines.
When the full details of the surry event are
- issued, we will evaluate its' applicability to Beaver Valley to insure that monitoring, of the critical areas of pipe affected by the causative mechanism, is performed.
Please contact my office if' additional information is requested.
Very truly yours, r} ln bo =
J. D.'Siebdr Vice President Nuclear Operations cc: Mr. W. M. Trcskoski, Resident Inspector U. S. Nuclear Regulatory Commission Beaver Valley Power Station Shippingport, PA 15077 U.
S. Nuclear Regulatory Commission c/o Document Management Branch Washington, DC 20555 Director, Safety Evaluation & Control Virginia Electric & Power Company P.O. Box 26666 One James River Plaza Richmond, VA 23261
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