ML19338E844

RO 80-071/01P:on 800926,during Surveillance Test to Verify Equipment Operating Times,Control Room Isolation Times Determined Not in Accordance W/Tech Specs.Caused by Tech Spec Error in Specified Response Time

ML19338E844
Person / Time
Site:	Beaver Valley
Issue date:	09/29/1980
From:	Werling J DUQUESNE LIGHT CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
BVPS:JAW:987, RO-80-071-01P, RO-80-71-1P, NUDOCS 8010060222
Download: ML19338E844 (2)

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DUQUESNE LIGHT COMPANY Beaver Valley Power Station

, Post Office Box 4 Shippingport, PA 15077 September 29, 1990

. 'BVPS: JAW:987 Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 LER 80-071/01P Mr. B. H. Grier, Director Of Regulation United States Nuclear Regulatory Commission Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Grier:

In accordance with Technical Specification 6.9.1.8.1, Administrative Controls, the following occurrence is reported. This occurrence was reported to Mr. D. A. Beckman, the Beaver Valley NRC Resident Inspector, at 1345 hours0.0156 days <br />0.374 hours <br />0.00222 weeks <br />5.117725e-4 months <br /> on September 26, 1980.

During performance of the surveillance test to verify Engineered Safety Features (ESF) equipment operating times, it was determined that the control room isolation times are not in accordance with the Technical Specification required response time of thirty (30) seconds considering a loss of offsite power. Previous review had, it is felt, assumed the diesel start time of ten (10) seconds, but had failed to include diesel sequencing time. It has been determined the required time in the Technical Specifications is in error and should have originally been specified as seventy-seven (77) seconds since the power supply for the control' room isolation valves is energized at the forty (40) second sequence step on the diesel load sequencer. A request will be made to the NRR to revise the specified response time in the Technical Specifications from thirty (30) seconds to seventy-seven (77) seconds.

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/ L) 8010060222- S

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. Mr. B. H. Grier September 29, 1980 BVPS: JAW:987 Page 2 For the control room isolation to be actuated and protect the operators from a hostile atmosphere, a CIB and BLACKOUT sign'a l must have been automatically initiated. .It is believed that there will be enough of a time lag such that the operator could credibly deal with the mitigation of an accident and no adverse atmosphere could exist. , -

- 'Very truly yours ,

.// 9 J. A. Werling (

Superintendent

.cc: Director Of Management & Program Analysis United States Nuclear Regulatory Commission Washington, D. C. 20555 W. J. Ross, BVPS Licensing Project Manager w/

United States Nuclear Regulatory Commission Washington, D. C. 20555 D. A. Beckman, Nuclear Regulatory Commission, BVPS Site Inspector P. Higgins, Secretary, Prime Movers Committee - EEI Nuclear Safety Analy. sis Center, Palo Alto, California Mr. John Alford, PA Public Utilities Commission, Harrisburg, PA e

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