05000272/LER-1980-023, Forwards LER 80-023/03L-0

Forwards LER 80-023/03L-0

ML18082A464
Person / Time
Site:	Salem
Issue date:	05/19/1980
From:	Librizzi F Public Service Enterprise Group
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18082A465	List: 05000272/LER-1980-023, Forwards LER 80-023/03L-0 05000272/LER-1980-023-03, /03L-0:on 800424,during Routine Operation,Svc Water Flow to Containment Fan Coil Unit 12 Was Noted to Decrease Drastically on Three Different Occasions.Caused by Failed Flow Transmitter
References
NUDOCS 8005270405
Download: ML18082A464 (3)

LER-1980-023, Forwards LER 80-023/03L-0

Event date:
Report date:
2721980023R00 - NRC Website

text

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PS~G Public Service Electric and Gas Company 80 Park Place Newark. N.J. 07101 Phone 201 430-7000 Mr. Boyce H. Grier Director of USNRC May 19, 1980 Off ice of Inspection and Enforcement Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Grier:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 80-23/03L Pursuant to the requirement8 of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1, we are subrrittin,g Lice!;.see Event Report for Reportable Occurrence 80-23/03L.

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

Sincerely yours, J,,z~

F. P. Libriz~o" General Manager -

Electric Production CC:

Director, Office of Inspection and Enforcement (30 copies)

Director, Office of Management Information and Program Control

( 3 copies)

\\l.\\H:O,Cll SUllH'I.

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1H\\n~J.,'J7P

Report Number:

80-23/03L Report Date:

5/19/20 Occurrence Date:

4/24/80, 4/28/80 and 4/29/80 Facility:

Salem Generating Station Public Service Electric & Gas Company Hancock's Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

No. 12 Containment Fan Coil Unit Inoperable CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 Reactor Power 100%

DESCRIPTION OF OCCURRENCE:

Between April 24, 1980, and April 29, 1980, Action Statement 3.6.2.3 was entered three times.

The Action Statement states three indepen-dent groups of containment cooling fans shall be operable with two fan systems to each of two groups and one fan system to the third group.

With one group of containment cooling fans inoperable, restore the inoperable fan group to operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in hct shutdown within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

On April 24, 1980, at 0615 hours0.00712 days <br />0.171 hours <br />0.00102 weeks <br />2.340075e-4 months <br />, service water flow decreased from 900 gallons per minute to 250 gallons per minute.

An investigation revealed the instrument for the flow controller had drifted.

It was recalibrated and the Fan Coil Unit demonstrated operable.

The Ac~ion Statement was terminated at 2251 hours0.0261 days <br />0.625 hours <br />0.00372 weeks <br />8.565055e-4 months <br /> on April 24, 1980.

On April 28, 1980, at 1124 hours0.013 days <br />0.312 hours <br />0.00186 weeks <br />4.27682e-4 months <br /> when placing the F2n Coil Unit in service, no service water flow was indicated.

It was found that the sensing line for flow transmitter FA-3165Z was plugged with silt.

The line was water lanced, the Fan Coil Unit demonstrated operable and the Action Statement terminated at 2120 hours0.0245 days <br />0.589 hours <br />0.00351 weeks <br />8.0666e-4 months <br /> on April 28, 1980.

On April 29, 1980 at 1315 hours0.0152 days <br />0.365 hours <br />0.00217 weeks <br />5.003575e-4 months <br />, service water flow decreased from 800 gallons per minute to 300 gallons per minute.

It was determined the flow transmitter, 1FA3165Z, had failed.

The transmitt8r was replaced, the Fan Coil Unit demonstrated operable and the Action Statement terminated at 2220 hours0.0257 days <br />0.617 hours <br />0.00367 weeks <br />8.4471e-4 months <br /> on April 29, 1980.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

All three instances led to the ultimate failure of the flow transmitter.

LER 80-23/03L 2 -

ANALYSIS OF OCCURRENCE:

During this period of time, the Fan Coil Unit was declared inoperable on three separate occasions.

In each instance, the repairs were effected and it was felt the repairs made were complete.

All cases were problems related to FA3165 flow transmitter.

CORRECTIVE ACTION

The transmitter was recalibrated, the sensing line blown down and the transmitter replaced.

On each occasion, prior to declaring the Fan Coil Unit operable, the unit was proven operable by completing Surevillance Procedure 4.6.2.3.

FAILURE DATA:

Fischer Porter Transmitter Serial Number 7109A5501A3 Prepared By M. J. Murphy SOR.C Meeti.ng No.

32-80