05000272/LER-1980-004, Forwards LER 80-004/03X-1.Detailed Event Analysis Encl

Forwards LER 80-004/03X-1.Detailed Event Analysis Encl

ML20054G303
Person / Time
Site:	Salem
Issue date:	06/07/1982
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20054G304	List: 05000272/LER-1980-004, Forwards LER 80-004/03X-1.Detailed Event Analysis Encl
References
NUDOCS 8206210403
Download: ML20054G303 (3)

LER-2080-004, Forwards LER 80-004/03X-1.Detailed Event Analysis Encl

Event date:
Report date:
2722080004R00 - NRC Website

text

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O PSEG Public Service Electric and Gas Company P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station June 7, 1982 Mr. R. C. Haynes Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406 Dear Mr. Haynes LICENSE MO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 80-04/03X-1 SUPPLEMENTAL REPORT Pursuant to the requiremants of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1.9.b, we are submitting supplemental Licensee Event Report for Reportable Occurrence 80-04/03X-1.

Sincerely yours, ll .%lA*b'^

H. J. Midura General Manager -

Salem Operations FD:ks CC: Distribution dl%

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r Report Number: 80-04/03X-1 Report Date: 06-07-82 Occurrence Date: 01-14-80 Facility: Salem Generating Station, Unit 1 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Boron Injection Tank - Inoperable.

This report was initiated by Incident Reports 80-26, 80-27, and 80-47.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 3 - Rx Power 0% - Unit Load 0 MWe.

DESCRIPTION OF OCCURRENCE:

At 1624 hours0.0188 days <br />0.451 hours <br />0.00269 weeks <br />6.17932e-4 months <br />, January 14, 1980, the recirculation flow indication for the Boron Injection Tank (BIT) indicated low and the alarm annunciated. The BIT was declared inoperable and Action Statement 3.5.4.1 was entered. Subsequently, at 0200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br />, January 15, and at 1702 hours0.0197 days <br />0.473 hours <br />0.00281 weeks <br />6.47611e-4 months <br />, January 23, the alarm again annunciated, and Action Statement 3.5.4.1 was again entered.

This occurrence constituted operation in a degraded mode in accordance with Technical Specification 6.9.1.9.b.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

! The low flow indication was caused by a combination of partial i clogging of the system with boric acid crystals, plus two missing float retaining rings. It is undetermined whether the rings were omitted during a previous disassembly or loosened and migrated out of place during operation. It is established that the lack of the retaining rings can cause abnormal indi-cation by allowing the float to move beyond its predetermined operational range.

ANALYSIS OF OCCURRENCE

Technical Specification 3.5.4.1 requires:

The Boron Injection Tank shall be operable with:

a. A minimum contained volume of 900 gallons of borated water,

b. Between 20,100 and 21,800 ppm of boron,

c. A minimum solution temperature of 145 F.

. LER 80-04/03X-1 CORRECTIVE ACTION:

On January 14, the flow meter was removed and a small amount of boric acid crystals was removed from it. The meter was reinstalled and Action Statement 3.5.4.1 was terminated at 2200 hours0.0255 days <br />0.611 hours <br />0.00364 weeks <br />8.371e-4 months <br />. On January 15, the line was flushed, and flow was verified by a change in the valve lineup and a corresponding boric acid storage tank level increase. The Action Statement was terminated at 0530 hours0.00613 days <br />0.147 hours <br />8.763227e-4 weeks <br />2.01665e-4 months <br />. On January 23, the flow meter was disassembled and two float retaining rings were found to be missing. They were properly replaced and the Action State-ment was terminated at 2240 hours0.0259 days <br />0.622 hours <br />0.0037 weeks <br />8.5232e-4 months <br />. A subsequent engineering review of the flow meter design concluded that it was properly suited to the application, and the problem was apparently maintenance oriented. It recommended continued use of this instrument for this application.

FAILURE DATA:

Schutte and Koerting Company Flow Meter Type 20-9340-2210 Float Retaining Rings Prepared By F. Dickey / )$ 6 Gendraf Madager -

Salem Operations SORC Meeting No. 82- 57

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