05000311/LER-1982-065, Forwards LER 82-065/03L-0.Detailed Event Analysis Encl

Forwards LER 82-065/03L-0.Detailed Event Analysis Encl

ML20062L447
Person / Time
Site:	Salem
Issue date:	08/04/1982
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20062L450	List: 05000311/LER-1982-065, Forwards LER 82-065/03L-0.Detailed Event Analysis Encl 05000311/LER-1982-065-03, /03L-0:on 820720,zero Svc Water Flow to Containment Fan Coil Unit 24 Discovered During Surveillance Testing.Caused by Failure of Actuator on Valve 24SW223.Rod End Bearing Assembly Replaced
References
NUDOCS 8208190113
Download: ML20062L447 (3)

LER-1982-065, Forwards LER 82-065/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3111982065R00 - NRC Website

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~ O PSEG Public Service Electric and Gas Comoany P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station August 4, 1982 i

t a

Mr.

R. C.

Ilaynes Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Ilaynes :

1 LICENSE NO. DPR-75 DOCKET NO. 50-31.1 REPORTABLE OCCURRENCE 82-065/03L Pursuant to the requi.rements of Salem Generating Station U:.i t No.

2, Technical Specifications, Section 6.9.1.9.b, we are submitting Licensee Event Report for Reportable Occurrence 82-065/03L.

This report is required within thirty (30) days of the occurrence.

Sincerely yours, II.

J.

Midura General Manager -

Salem Operations RF:ks CC:

Distribution I

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PDR ADOCK 05000311 S

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Report Number:

82-065/03L Report Date:

08-04-82 Occurrence Date:

07-20-82 Facility:

Salem Generating Station, Unit 2 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 1DENTIFICATION OF OCCURRENCB:

No. 24 Containment Fan Coil' Unit - Inoperable.

This report was initiated by Incident Report 82-187.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 82% - Unit Load 890 MWe.

DESCRIPTION OF OCCURRENCE:

At 2045 hours0.0237 days <br />0.568 hours <br />0.00338 weeks <br />7.781225e-4 months <br />, July 20, 1982, during the performance of Surveillance Procedure SP (O) 4.6.2.3A, the Control Room Operator discovered zero service water flow to No. 24 Containment Fan Coil Unit (CFCU) in both high and low speed modes of operation.

The fan coil group containing the CFCU was declared inoperable, and Technical Specification Action Statement 3.6.2.3.a was entered, retroactive to the time of discovery.

The cor.tainment spray systems were operable throughout_the occurrence.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The low service water flow was caused by the failure of the actuator on Flow Control Valve 24SW223.

The rod end bearing assembly had failed as the result of accelerated corrosion; the corrosion was apparently due to minor service water leakage or condensate being trapped in the bearing cover.

No previous failures of this type have been noted.

ANALYSIS OF OCCURRENCE:

The CFCU's 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 either all fan coil groups or of both containment spray systems is necessary to insure offsite radiation dose is maintained within the limits of 10CFR100.

.LER 82-065/03L -

,Because redundant cooling capability was provided by the containment spray systems, no risk to the health or safety of the public was involved.

The occurrence therefore constituted operation in a degraded mode permitted by a Limiting Condition for Operation, and is reportable in accordance with Technical Specification 6.9.1.9.b.

Action Statement 3.6.2.3.a requires:

With one group of containment cooling fans inoperable, restore the inoperable group of cooling fans to operable status within the next 7 days, or be in 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 shutdown 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

The failed rod end bearing was replaced and provision made for drainage of leakage and condensate from the bearing cover.

No leakage was observed at the time of the repair of the actuator.

The CFCU was returned to service and satisfactorily tested.

No. 24 CFCU was declared operable at 0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br />, July 22, 1982, and Action Statement 3.6.2.3.a was terminated.

FAILURE DATA:

Fisher Controls 8 in. Vee-ball Valve Type 657-8U Prepared By R.

Frahm

/h [I W Gene'ral/ Manager -

Salem Operations S0RC Meeting No.

82-73 l

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