ML20204E636

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Forwards Evaluation Performed for Assumed Steam Generator Tube Plugging Level of 2.5% in Each Steam Generator in Support of Return to Power Operation
ML20204E636
Person / Time
Site: Beaver Valley
Issue date: 07/24/1986
From: Carey J
DUQUESNE LIGHT CO.
To: Tam P
Office of Nuclear Reactor Regulation
Shared Package
ML20204E643 List:
References
NUDOCS 8608010194
Download: ML20204E636 (2)


Text

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'Af Telephone (412) 333-6000 Nuclear Group Nppingport, PA 15077-0004 Director of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Attn: Mr. Peter S. Tam, Project Manager Project Directorate No. 2 Division of PWR Licensing - A Washington, DC 20555

- Mail Stop 340 -

Reference:

Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 Steam Generator Tube Plugging Gentlemen:

As a result of additional steam generator tube plugging during our current refueling outage, the number of plugged tubes has exceeded 1% in one of the steam generators. The BV-1 UFSAR limit on steam generator tube plugging is currently 1% uniform.

In order to support the Beaver Valley Unit 1 plant return to power operation, an evaluation has been performed for an assumed plugging level of 2.5% in each steam generator.

This evaluation has been reviewed by the BV-1 Onsite Safety

. Committee and Offsite Review Committee and a 50,59 review has been performed to determine that no unreviewed safety question exists.

Based on the evaluation results, it is concluded that there is no safety problem associated with returning Beaver Valley Unit 1 to full power operation with as much as a 2.5% level of steam generator tube plugging.

Attached for your information is a copy of the Beaver Valley l

Unit 1ReturntoPowerEvaluationwith2.5%TubePlugg.yng.

If you have any additional questions regarding this issue, please l contact us.

Very truly yours,

. . are ) DS 8608010194 DR 860724 V e Presi ent, Nuclear ADOCK 05000334 PDR go i i i

Benvar Vallcy Pow 3r Station, Unit No. 1 Dock 3t No. 50-334, Lic nta No. DPR-66

. Steam Generator Tube Plugging l Page 2 cc: Mr. W. M. Troskoski, 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 U. S. Nuclear Regulatory Commission Attn: Dr. Thomas E. Murley, Regional Administrator Region 1 631 Park Avenue King of Prussia, PA 19406

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