05000272/LER-1982-029, Supplemental LER 82-029/03X-1:on 820501,during Surveillance Testing,Svc Water Flow to Containment Fan Coil Unit 12 Discovered Less than Required 2,500 Gallons Per Minute for Low Speed.Caused by Stuck Flow Control Valve

Supplemental LER 82-029/03X-1:on 820501,during Surveillance Testing,Svc Water Flow to Containment Fan Coil Unit 12 Discovered Less than Required 2,500 Gallons Per Minute for Low Speed.Caused by Stuck Flow Control Valve

ML20082L773
Person / Time
Site:	Salem
Issue date:	11/17/1983
From:	Frahm R, Zupko J Public Service Enterprise Group
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20082L722	List: 05000272/LER-1982-029, Supplemental LER 82-029/03X-1:on 820501,during Surveillance Testing,Svc Water Flow to Containment Fan Coil Unit 12 Discovered Less than Required 2,500 Gallons Per Minute for Low Speed.Caused by Stuck Flow Control Valve
References
LER-82-029-03X-01, LER-82-29-3X-1, NUDOCS 8312050577
Download: ML20082L773 (4)

LER-2082-029, Supplemental LER 82-029/03X-1:on 820501,during Surveillance Testing,Svc Water Flow to Containment Fan Coil Unit 12 Discovered Less than Required 2,500 Gallons Per Minute for Low Speed.Caused by Stuck Flow Control Valve

Event date:
Report date:
2722082029R00 - NRC Website

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7 8 A 74 REPORT DATE EVENT DESCRIPTION AND AROBABLE CONSEQUENCES h lol2l l On May 1,1982, during surveillance testing, the Control Room Operator discovered that l

[oIalI the service water flow to No. 12 Containment Fan Coil Unit (CFCU) was less than the l

o;,;l2500 GPM required by the Technical Specifications for low speed operation. No. 12 l lo Isl I CFCU was declared inoperable, and at 0730 hours0.00845 days <br />0.203 hours <br />0.00121 weeks <br />2.77765e-4 months <br />, Action Statement 3.6.2.3.a was l 1016 l lentered. (82-029,82-024, 82-22,81-121, 81-99) l 10171I I l o lw l i I 7 8 9 33 SYSTEM CAUSE CAUSE COYP SALVE CODE CODE SUBCODE COYPONENT CODE SuBCODE SUBCOCE lol9l 8

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43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l i l o l l Flow Control Valve 12 SW223 had stuck in the closed position, resulting in low l li;ij l service water flow to the CFCU. Valve 12 SW223 was exercised, and No. 12 CFCU was l

,, i g [ satisfactorily testc.d. The unit was delcared operable at 1015 hours0.0117 days <br />0.282 hours <br />0.00168 weeks <br />3.862075e-4 months <br />, May 1, 1982, l g-] l and Action Statement 3.6.2.3.a was terminated. Daily operation of the CFCUs has l gii,i l corrected this problem. ]

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' Report Number: 82-029/03X-1 Report Date: 11-17-83 Occurrence Date.: 05-01-82 Facility: Salem Generating Station, Unit 1 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

No. 12 Containment Fan Coil Unit - Inoperable.

This report was initiated by Incident Report 82-104.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 85% - Unit Load 978 MWe DESCRIPTION OF OCCURRENCE:

On May 1, 1982, during surveillance testing, the Control Room Operator discovered that the service water flow to No. 12 Containment Fan Coil Unit (CFCU) was less than the 2500 GPM required by the Technical Specifications for low speed operation. No. 12 CFCU wac declared irioperable, and at 0730 hours0.00845 days <br />0.203 hours <br />0.00121 weeks <br />2.77765e-4 months <br /> Action Statement 3.6.2.3.a was entered.

Redundant CFCUs and both Containment Spray Systems were operable throughout the occurrence.

DESIGNA" ION OF APPARENT CAUSE OF OCCURRENCE:

Flow Control Valve 12SW223 had stuck in the closed position, resulting in low service water flow to the CFCU. The binding of type SW223 valves is apparently associated with the accumu-lation of scale and corrosion on the valve stems, resulting from the CFCUs being idle between monthly surveillance runs.

ANALYSIS OF OCCURRENCE:

The CFCUs operate in conjunction with the containment spray systems to remove heat and radioactive contamination from the containment atmosphere in the event of a design basis accident.

Operability of the equipment is necessary to insure offsite radiation dose is maintained within the limits of 10CFR100.

As noted, containment cooling capability was provided by the redundant equipment; no undue risk to the health or safety of the public was therefore involved in this occurrence. The occurrence constituted operation in a degraded mode permitted by a limiting condition for operation and is reportable in accordance with Technical Specification 6.9.1.9b.

LER 82-029/03X-1 .

ANALYSIS OP OCCURRENCE: (contir"ed)

Technical Specification 3.6.2.3.a requires:

. With one group of containment cooling fans inoperable and both containment spray systems operable, restore the inoperable group of containment cooling fans to an operable status within 7 days, or be in at least hot standby within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in cold shut-down within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

CORRECTIVE ACTION:

Valve 12SW223 was exercised, and No. 12 CFCU was satisfac-torily tested. The unit was declared operable at 1015 hours0.0117 days <br />0.282 hours <br />0.00168 weeks <br />3.862075e-4 months <br />, May 1, 1982, and Action Statement 3.6.2.3.a was terminated.

Due to recurrent problems of this type, daily operation of CFCUs in low speed was commenced in December 1982 (per revision of Operation Directives 40-46). No further problems have been noted since that time. Running the CFCU results in cycling of the associated control valves and has apparently eliminated the problem with the sticking of these valves.

FAILURE DATA:

Fisher Controls Co.

8 inch Vee-ball Valve Type 657-8U l Prepared By R. Frahm As A g-"

l VGeneral MaKager Salem Operations SORC Meeting No.83-119 l

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O, PSEG Public Service Electric and Gas Company P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station November 17, 1983 Dr. Thomas E. Murley Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Dr. Murley:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 82-029/03X-1 SUPPLEMENTAL REPORT Pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1.9b, we are submitting supplemental Licensee Event Report for Reportable Occurrence 82-029/03X-1.

Sincerely yours, J. M. Zupko, Jr.

General Manager -

Salem Operations RF:kil CC: Distribution The Energy people nwom im