ML19350A854

Application to Amend App a Tech Specs to Provide Redundancy in Decay Heat Removal Capability in All Modes of Operation. Proposed Change Includes Mod for Water Level in Refueling Cavity.Requests Change Be Handled as Emergency

ML19350A854
Person / Time
Site:	Beaver Valley
Issue date:	03/13/1981
From:	Dunn C DUQUESNE LIGHT CO.
To:	Varga S Office of Nuclear Reactor Regulation
Shared Package
ML19350A855	List: ML19350A854 ML19350A856
References
TAC-42092, NUDOCS 8103170147
Download: ML19350A854 (3)

Text

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'Af (412) 456-6000 435 S..tn Aveng,e 7;"S""^ March 13, 1981 e-\

/ N dfu,. h Director of Nuclear Reactor Regulation United States Nuclear Regulatory Commission k

Attn: Mr. Steven A. Varga, Chief 7 I

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Operating Reactors Branch No. 1 %gSS.l g 7n I A el__

i Division of Licensing Washington, DC 20555 9

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Reference:

Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 d \

Request for Amendment 60 to Operating License Gentlemen:

Enclosed are three (3) signed originals and thirty-seven (37) copies of a proposed change to the Beaver Valley Power Station Appendix A Technical Specifications. This change is being submitted to provide a redundancy in decay heat removal capability for the plant in all modes of operation. The proposed change is in response to your letters of June 11, 1980 and February 2, 1981. Additionally, in our response dated September 23, 1980 to your letter of August 15, 1980 concerning the water level in the refueling cavity, we indicated that the Technical Specifications for water level would be provided with the proposed decay heat removal change. The proposed change for the water level in the refueling cavity has been included as part of this proposed change.

Safety Evaluation The requirement for redundancy in decay heat removal capability as set forth in these proposed technical specifications provides additional assurance that sufficient core heat removal capability is available. This additional capability increases the probability that adequate flow to ensure mixing, prevent stratification and produce gradual reactivity changes during boron concentration reductions will be maintained. The original basis provided for single failure considerations in the HOT STANDBY mode. The revised basis provides for single failure considerations during all modes of operation.

This proposed change provides for additional assurance for safe operation during all modes of operation, and decreases the likelihood of the conse-quences of a loss of decay heat removal by providing redundancy.

The OSC and ORC have reviewed the proposed change and have determined that there are no safety implications associated with the change and that the change does not constitute an unreviewed safety question.

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- Beaver Valley Power Station, hit No.1 Docket No. 50-334, License No. DPR-66 Request for Amendment 60 Page 2 We have-determined the change to be a class III a=end=ent and we are enclosing a check for S4,000 in accordance with 10 CFR 170.22.

We would like to request the change be handled on an emergency basis.

Very truly yours, C. N. Dunn Vice President, Operations cc: D. A.'Beckman, 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 n __

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.(CORPORATE SEAL)

Attest:

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//ft)th )tffh ThomasWelfer,ffr. 5 Secretary COMMONWEALTH OF PENNSYLVANIA)

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COUNTY OF ALLEGHENY )

.. On this A8 day of M44d M , 1981, before me, D O N ft.TT W mrawwnw , a Notary Public in and for said Commonwealth and County, personail'yappeared C. N. Dunn, who being duly sworn, deposed, and said that (1) he is Vice President of Duquesne Light, (2) he is duly authorized to execute and file the foregoing Submittal on behalf of said Company, and (3) the statements set forth in the Submittal are true and correct to the best of his knowledge, information and belief.

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'" DONALD W. SHANNON. NOTARY PUBLIC PITTSBURGH. ALLEGHENY COUNTY MY COMWS$lCN EXFIRES JUNE 7,1983 Meeer, Pennsylvania Association of Nouries l

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