05000311/LER-1981-058, Forwards LER 81-058/03L-0.Detailed Event Analysis Encl

Forwards LER 81-058/03L-0.Detailed Event Analysis Encl

ML20010B851
Person / Time
Site:	Salem
Issue date:	08/07/1981
From:	Uderitz R Public Service Enterprise Group
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20010B852	List: 05000311/LER-1981-058, Forwards LER 81-058/03L-0.Detailed Event Analysis Encl 05000311/LER-1981-058-03, /03L-0:on 810709,boric Acid Storage Tank Level Decreased to Less than Spec Min.Caused by Constant Demand for Makeup to RCS to Compensate for Changes to RCS Specific Vol.Boric Acid Batching Initiated
References
NUDOCS 8108180382
Download: ML20010B851 (2)

LER-1981-058, Forwards LER 81-058/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3111981058R00 - NRC Website

text

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b PSIRG Put;Iic Service Electric and Gas Corrpany 80 Park Plaza Newark, N.J. 07101 Phone 201/430-7000 August 7, 1981 Mr. Boyce H. Grier g

g Director of USNRC Office of Inspection and Enforcement U

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Region 1 631 Park Avenue k

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g fl(Jgj'71981m King of Prussia, Pennsylvania 19406

Dear Mr. Grier:

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LICENSE NO. DPR-75 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 81-58/03L Pursuant to the requirements of Salem Generating Station Unit No. 2 Technical Specifications, Section 6.9.1.9.b, we are submitting Licensee Event Report for Reportable Occurrence 81-58/03L.

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

Sincerely yours, l

g(/

R.

7.

Uderitz General Manager -

Nuclear Production CC:

Director, Office of Inspection [ph and Enforcement (30 copies)

Director, Office of Management Information and Program Control g,I (3 copies) g 810",180302 810807 DR ADOCK 05000 The Energy People os = owu so

'n Report Number:

81-58/03L Report Date:

August 7, 1981 Occurrence Date:

7-9-81 Facility:

Salem Generating Station, Unit 2 Pub 1 ervice Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Boric Acid Storage Tank - Low Level.

This report was initiated by Incident Report 81-241.

CANDITIONS PRIOR TO OCCURRENCE:

Mode 3 - Rx Power 0% - Unit Load 0 MWe DESCIPTION 00 OCCURRENCE:

On July 9, 1981, during unit cooldown to cold shutdown for maintenance, the boric acid storage tank level decreased to less than the minimum level reclired by technical specification 3.1.2.6 due to primary system makeup to compensate for changes in Reactor Coolant System (RCS) specific volume.

At 1418 hours0.0164 days <br />0.394 hours <br />0.00234 weeks <br />5.39549e-4 months <br />, July 9, 1981, the boric acid storage tank was declared inoperable and action statement 3.1.2.6.a was entered.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

Prior co the start of the cooldown, boric acid batching was initiated.

However, batching efforts were unable to maintain the boric acid storage tank levels above the minimum requirements due to the constant demand for makeup to the RCS to compensate for the specific volume change as the unit cooldown progressed.

ANALYSIS OF OCCURRENCE:

Technical specification 3.1.2.6.a requires:

With the Bor'c Acid Storage System inoperable, restore the Storage System 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 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 />.

CORRECTIVE ACTION

The unit cooldown rate was decreased to reduce the RCS makeup require-monts and the demand for boric acid.

Boric acid batching was continued until the boric acid storage tank level was restored to specification limits.

At 1511 hours0.0175 days <br />0.42 hours <br />0.0025 weeks <br />5.749355e-4 months <br />, July 9, 1981, the level was restored and action statement 3.1.2.6.a was terminated.

FAILURE DATA:

Not Applicable

,/,,/ ~/

Prepared By F.

Dickey

/ M+t%?C Map,dger - Salem Generating Station

~

SORC Meeting No.

81-73