ML20064H609

RO 82-150:on 821227,flow Indicator Arrow of Kerotest Valve Pointed Back Toward Detector.Caused by Improper Installation.Valve Realigned & Flow Through Detector Tested

ML20064H609
Person / Time
Site:	San Onofre
Issue date:	12/30/1982
From:	Ray H SOUTHERN CALIFORNIA EDISON CO.
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
RO-82-150, NUDOCS 8301170359
Download: ML20064H609 (2)

Text

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Southern California Edison Company k,ff4'O 2 C; S AN ONOFRE NUCLE AR GENER A TING S T A TION /

P .O. B O X 128 /

S AN C LEMENT E. C A LIFORNI A 92672 .(' #

H. B. R A Y Y E I.E PHON E ST Af TON M AN AGE st (7141492 F F00 December 30, 1982 U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region V 1450 Maria Lane, Suite 210 Walnut Creek, California 94596-5368 Attention: Mr. R. H. Engelken, Regional Administrator

Subject:

Docket No. 50-361 24-Hour Confirmation Letter Licensee Event Report No.82-150 San Onofre Nuclear Generating Station, Unit 2 This letter provides written confirmation of a 24-hour report made in accordance with Section 6.9.1.12.1 of Appendix A to Facility Operating License NPF-10. The prompt report was made to Mr. D. F. Kirsch, Chief, Reactor Projects Section 3, NRC Region V, on December 29, 1982, and deals with the improper installation of a valve in the Liquid Radwaste Monitor RT-7813.

On December 27, while performing maintenance on the Liquid Radwaste Monitor RT-7813 Sample Line, a Kerotest valve installed on the outlet side of the radiation detector was observed to have the flow indicator arrow pointing back toward the detector. On December 29, it was confirmed that the valve was incorrectly installed, and flow through the monitor was thereby prevented.

Pursuant to Technical Specification 3.3.3.8, the monitor was declared inoperable and the required compensatory sampling program was initiated.

The valve has subsequently been physically realigned and Monitor RT-7813 will be returned to the operable status following a complete flushing of the detector and associated piping. Flow through the radiation detector was verified by performing a flushing test.

8301170359 821230 PDR ADOCK 05000361 16 O s PDR

o Mr. R. H. Engelken December 30, 1982 A 14-day followup report with a copy of Licensee Event Report (LER)82-150 will be sumbitted before January 12, 1982. A special report per Technical Specification 3.3.3.8.b will be included in the next Semiannual Radioactive Effluent Release Report.

If you have any questions, please so advise.

Sincerely, 1

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cc: A. F. Chaffee (USNRC Resident Inspector, Units 2/3)

R. J. Pate (USNRC Resident Inspector, Units 2/3)

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