ML20065B995

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Responds to NRC Re Violations Noted in IE Insp Repts 50-282/82-20 & 50-306/82-20.Corrective Actions:Cap on Transmitter Sensing Line Removed,Lines Labeled & Warning Signs Placed
ML20065B995
Person / Time
Site: Prairie Island  Xcel Energy icon.png
Issue date: 01/20/1983
From: Larson C
NORTHERN STATES POWER CO.
To: Streeter J
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20065B986 List:
References
NUDOCS 8302230686
Download: ML20065B995 (2)


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4 Northem States Power Company 414 Nicollet Mall Minneapolis, Minnesota 55401 Telephone (612) 330-5500 January 20, 1983 Mr. J.F. Streeter, Chief Projects Branch 2 Region III - Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137

Dear Mr. Streeter:

PRAIRIE ISLAND NUCLEAR GENERATING PLANT DOCKET NOS. 50-282 AND 50-306 In response to your letter of December 27, 1982, which transmitted Inspection Reports 50-282/82-20 and 50-306/82-20, the following is offered:

Violation Technical Specification 3.5.C states: If the number of channels of a particular sub-system in service falls below the limits given in the column entitled Minimum Operable Channels, or if the specified Minimum Degree of Redundancy cannot be achieved, operation shall be limited according to the requirement shown in the column titled Operator Action of Tables TS.3.5-2 through TS.3.5-6.

a. Table 3.5.3 requires that Hi-Hi Containment Pressure (Containment Spray) have a minimum of two operable channels with a minimum degree of redundancy of one, or operation shall be limited to Hot Shutdown.

Contrary to the above, containment pressure transmitter, PT-948, was identified to be inoperable on November 20, 1982, reducing containment pressure operable channels to one, with no redundancy, with no assurance that the transmitter had been operable during previous power operation.

This is a Severity Level IV violation (Supplement I).

8302230686 830217 PDR ADOCK 05000282 O PDR J AN 24 W

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4 Mr. J.F. Streeter January 20, 1983

Response

'2he transmitter was inoperable due to the presence of a cap on its sensing line. The cap was removed as were all tubing fittings on sensing lines in both units.

Full compliance has been achieved. The sensing lines in both units will be labeled and warning signs placed.

Inspection of the lines will be added to the containment integrity (prestart) checklists.

Sincerely, C. E. L rson' Director, uclear Generation CEL/ts cc Messrs. G. Charnoff C. Feierabend

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