ML20148B415

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Forwards Application for Amend to License NPF-73,consisting of Tech Spec Change Request 10,incorporating Temporary Change to Tech Spec 3.3.3.2 to Relax Required Number of Incore Detector Thimbles from 75% to 50% for Cycle 1
ML20148B415
Person / Time
Site: Beaver Valley
Issue date: 01/13/1988
From: Sieber J
DUQUESNE LIGHT CO.
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
Shared Package
ML20148B419 List:
References
NUDOCS 8801250011
Download: ML20148B415 (2)


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'At5 Telephone (412) 393-6000 Nuclear Group P O Oca 4 Shippingport, PA 15077 4004 January 13, 1988 U. S. Nuclear Regulatory Commission Attn: Document Control Desk g'9ashington, DC 20555

Reference:

Beaver Valley Power Station, Unit No. 2 Docket No. 50-412, License No. NrF-73 Proposed Operating License Change Request No. 10 Gentlemen:

Enclosed are:

1. One (1) original and thirty-seven (37) copies of an Application for Amendment to our Operating License to incorporate a temporary change to specification 3.3.3.2 to relax the required number of incore detector thimbles from 75% to 50% for the remainder of Cycle 1. The peaking factor surveillance requirements have also been revised to increase the uncertainty factors applied to the peaking factors when a flux map is performed with less than 75%

of the thimbles. The increased uncertainty factors have been evaluated by Westinghouse and it has been determined that sufficient conservatism is available to ensure the safe operation of the plant for the remainder of Cycle 1.

This proposed amendment was discussed with NRC Project Manager p.S. Tam on December 28, 1987 after it was determined that a sufficient number of thimbles may not be available when the next flux map is required. During the flux map performed on December 23, 1987 only 80% ct +he incore thimbles would allow passage of the movable detec'c ors. Specification 3.3.3.2 currently requires at least 75% of the detector thimbles operable when performing a flux map to satisfy the peaking factor surveillances required in accordance with surveillance requirements 4.2.2.2 and 4.2.3.1.

This proposed amendment would allow continued plant operation in the event less than 75% of the thimbles can be used during the next required flux map. In accordance with the above surveillance requirements the peaking factors must be determined to be within limits at least once per 31 effective full power days. The next flux map must then be performed on or about January 23, 1988. In accordance with specification 4.0.2 the surveillance frequency may be extended up to an additional 25% (7 dayu). The proposed amendment is similar to Amendment No. 61 apFroved for Beaver Valley Unit 1 Cycle 3 as a temporary change.

Since insufficient time is available to process the amendment and saticfy the Sholly requirements for normal amendment review, it is requested that emergency amendment processing be used, because without th.s amendment the plant will be requi ed to shutdown.

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Beaver Valley Power Station, Unit No. 2 Docket No. 50-412, License No. NPF-73

. Proposed Operating License Change Request No. 10 Page 2 This change was reviewed by the OSC and ORC and determined to be safe and does not involve an unreviewed safety question.

2. Thirty-eight (38) copics of documents designated Attachments A, B and C which setforth the change in Technical Specifications, the safety analysis and the no significant hazards evaluation.

A check in the amount of $150.00 will be provided under separate cover as payment of the license amendment application fee in accordance with 10 CFR 170.

Very truly yours,

(

J. D. Sieber Vice President, Nuclear Attachment cc: Mr. J. Beall, Sr. Resident Inspector Mr. W. T. Russell, NRC Region I Administrator Mr. P. Tam, Project Manager Director, Safety Evaluation & Control (VEPCO)

Mr. T. M. Gerusky, Director BRP/ DER