ML20040A121

Requests That Hourly Local Surveillance of Temporary RCS Level Standpipe Inside Containment Be Deleted as Operational Requirement During Period of Abnormal Rcs/Rhr Level After New Steps for Monitoring RCS Level Are Implemented

ML20040A121
Person / Time
Site:	Beaver Valley
Issue date:	01/06/1982
From:	Carey J DUQUESNE LIGHT CO.
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
IAL-81-14, NUDOCS 8201200374
Download: ML20040A121 (2)

Text

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January 6, 1982 United States Nuclear Regulatory Commission Office of Inspection and Enforcement Attn:

C Haynes, Regional Director 3

f 631 Park Avenue King of Prussia, Pennsylvania 19406

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Reference:

Beaver Valley Power Station, Unit No. I N'u Docket No. 50-334, License No. DPR-66 Immediate Action Letter 81-14

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Gentlemen:

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y-On March 9,1981, you issued Immediate Action Letter 81-14 which documented the additional actions being taken by the station to monitor the Reactor Coolant System water level while in a partially drained down condition.

Since that time, procedure changes have been issued which require:

1.

Redundant remote level indication with the level recorded in the control (Level transmitters will be installed on 2 separate loops with the room.

level recorded on separate chart recorders).

2.

The logging, on a twice per shift basis, the recorded RCS level.

3.

A visual verification of agreement within 20% between the RCS loop level standpipe inside containment and the recorded level of the level transmitters on a daily basis.

4.

Venting of the RHR pumps on a daily basis.

5.

Continuous local monitoring of the RCS level standpipe any time a 20% disagreement between the level recorders and the local standpipe I

indication exists.

6.

Venting of the RHR pumps on an hourly basis any time RCS level, RHR flow or RHR pump current becomes unstable until a channel check of the level instruments is completed and the unstable condition has been stablized.

1 7.

Restrictions on dilution operations while in a partially drained down condition.

8.

Maintaining RCS temperature between 85'F and 120*F.

9.

Maintaining RHR flow above the low flow alarm setpoint and below g/

2000 gpm.

S 8201200374 820106

/ b DR ADOCK 05000334 PDR

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Beaver Valley Power Station, Unit No. 1 i

Docket No. 50-334, License No. DPR-66 l

Immediate Action Letter 81-14 Page 2

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10.

Maintaining the RCS level at a indicated level of 75% to 95% of the loop span. A 50% level corresponds to the centerline of the coolant loop.

11.

The logging of RHR pump current on a per shif t basis.

l 12.

The trending of at least two incore thermocouples on an hourly interval.

It is hereby requested that thy hourly local surveillence of the temporary i

RCS level standpipe inside containment be deleted as a requirement for operation I

during periods of abnormal RCS/RHR Level when the twelve steps enumerated above i

are implemented.

If you have any questions concerning this request, please contact j

my office.

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Very t uly yours, 1

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i J. J. Carey Vice President, Nuclear cc:

Mr. D. A. Beckman, Resident Inspector U. S. Nuclear Regulatory Commission Beaver Valley Power Station Shippingport, PA 15077 1

1 U. S. Nuclear Regulatory Commission

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c/o Document Management Branch l

Washington, DC 20555 i

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