05000272/LER-1980-053, Forwards LER 80-053/03L-0

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Forwards LER 80-053/03L-0
ML18085A177
Person / Time
Site: Salem 
Issue date: 10/28/1980
From: Librizzi F
Public Service Enterprise Group
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18085A179 List:
References
NUDOCS 8011030565
Download: ML18085A177 (3)
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LER-1980-053, Forwards LER 80-053/03L-0
Event date:
Report date:
2721980053R00 - NRC Website
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text

e OPS~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 October 28, 198b 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 80-53/03L Pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1, we are submitting Licensee Event Report for Reportable Occurrence 80-53/03L *. This report is required within thirty (30) days of the occurrence.

Sincerely yours,

/¥"---'~

F. P. Librizzi General Manager -

Electric Production CC:

Director, Office of Inspection and Enforcement (30 copies)

Director, Office of Management Information and Program Control (3 copies)

~~

U:\\llSOF srnun:

8011080 56~

. ~

Report Number:

80-53/03L Report Date:

October 28, 1980 Occurrence Date:

10/2/80 Facility:

Salem Generating Station, Unit 1 Public Service Electric & Gas Company Hancock's Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Inadvertent dilution of the Reactor Coolant System to less than 2000 ppm boron while in Mode 6.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 6 -

RCS Drained to one-half Loop Level Reactor Vessel Head Studs Detensioned DESCRIPTION OF OCCURRENCE:

At 0837 hours0.00969 days <br />0.233 hours <br />0.00138 weeks <br />3.184785e-4 months <br />, a routine Reactor Coolant Boron Sample indicated a concentration of 1898 ppm which is less than the 2000 ppm minimum required by Technical Specification 3.9.1.

Boration was commenced in accordance with the Action Statement and the RCS boron concen-tration was returned to 2132 ppm by 1050 hours0.0122 days <br />0.292 hours <br />0.00174 weeks <br />3.99525e-4 months <br />.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

Personnel error -

poor planning.

Failure to anticipate the effects of water entering the Reactor Coolant System.

ANALYSIS OF OCCURRENCE:

While the Reactor Coolant System was drained to approximately one-half loop level, a hydrolazer was being used to decontaminate the steam generator channel heads.

Due to a malfunction of a suction connection to remove the spent water, the water was entering the Primary Coolant System causing the dilution.

The boron concentration was 2061 ppm at 0120 hours0.00139 days <br />0.0333 hours <br />1.984127e-4 weeks <br />4.566e-5 months <br />.

By 0837 hours0.00969 days <br />0.233 hours <br />0.00138 weeks <br />3.184785e-4 months <br />, the concentration had been reduced by 163 ppm to 1898.

At that time, rapid boration was initiated and 450 gallons of 12% weight boric acid was added to restore the RCS to 2132 ppm.

Technical Specification 3.9.1 requires that the more restrictive of the two reactivity conditions of boron concentration > 2000 ppm or K effective< 0.95 to be met.

At the time of the dilution, the K effective was determined to be 0.889; however, this is the less restrictive condition.-

.LER 80-53/03L 2 -

October 28, 1980

CORRECTIVE ACTION

The Reactor Coolant System was borated and returned to within specifications by 1050 hours0.0122 days <br />0.292 hours <br />0.00174 weeks <br />3.99525e-4 months <br />.

The decontamination job in the steam generator was essentially complete and was terminated.

A procedure for hydrolazing the primary system will be developed in order to preclude the introduction of water.

FAILURE DATA:

Not Applicable Prepared By J. M. Randolph

~~~~~~~~--~~

Manager'~ Salem Generating Station SORC Meeting No.

87-80

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