ML20040F836

Ro:On 820102,while Performing Surveillance on Power Operated Relief Valve Block Valve (RCV-11),discovered Valve Would Not Cycle to Full Closed Position.Cause Not Determined.Valve Closed Manually.Repairs Effected 820128

ML20040F836
Person / Time
Site:	Crystal River
Issue date:	02/02/1982
From:	Mardis D FLORIDA POWER CORP.
To:	Harold Denton Office of Nuclear Reactor Regulation
References
3F-0282-01, 3F-282-1, NUDOCS 8202100359
Download: ML20040F836 (1)

Text

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C 0mPOpaY TON February 2,1982 i niC 3: th';

1. 3F-0282-01 g. f E 8 8;

File: 3-0-3-a-3 9 1982 w T2 ht$a d gra Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation ca p U.S. Nuclear Regulatory Commission tn Washington, D.C. 20555

Subject:

Crystal River Unit 3 Docket No. 50-302 Operating License No. DPR-72 PORV Block Valve

Dear Mr. Denton:

Pursuant to conversations with members of your staff, Florida Power Corporation hereby documents a recent event at Crystal River Unit 3.

On January 2,1982, while performing surveillance on the Power Operated Relief Valve (PORV) Block Valve (RCV-ll), it was discovered that the valve would not cycle to the full closed position. During the next plant shutdown, on January 10, 1982, a repair crew was sent to determine the cause of the valve malfunction and repair it. The cause could not be determined. The PORV Block Valve was closed manually and power operation resumed. Crystal River Unit 3 continued to operate with the PORV Block Valve closed until January 28, 1982, when repairs were effected. Alternate overpressure protection was afforded by the pressurizer code safety valves while the PORV and the Block Valve were out-of-service.

If you have any questions, please contact this office.

Very truly yours, om . a^ N David G. Mardis Acting Manager, Nuclear Licensing cc: Mr. 3. P. O'Reilly, Regional Administrator U.S. Nuclear Regulatory Commission 0

Office of Inspection & Enforcement 8S:(,C 101 Marietta St., Suite 3100 Atlanta, GA 30303 8202100359 820202 PDR ADOCK 05000302 S PDR General Office 32o1 inuty-fourtn street south e P O. Box 14042, st Petersburg. Florda 33733 e 813-866 5151 l... . . . . . .