ML18078A829

Forwards LER 79-008/03L-0

ML18078A829
Person / Time
Site:	Salem
Issue date:	02/07/1979
From:	Librizzi F Public Service Enterprise Group
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18078A831	List: ML18078A829 ML18078A834
References
NUDOCS 7902120118
Download: ML18078A829 (3)

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Public Service Electric and Gas Company 80 Park Place Newark, N.J. 07101 Phone 201 /622-7000 February 7, 1979 Mr. Boyce H. Grier Director of USNRC 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. 79-08/03L Pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1.b, we are submitting Licensee Event Report for Reportable Occurrence 79-08/03L. This report is required within thirty (30) days of the occurrence .

Sincerely yours,

z p JJ41f

. b ,/ .

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F. P. Li r1zz1 General Manager -

Electric Production CC: Director, Office of Inspection and Enforcement (30 copies)

Director, Office of Management Information and Program Control 79021.2 0\ \ ~

The Energy People

Report Number: 79-08/03L Report Date 02-07-79 Occurrence Date: 1-11-79 Facility: Salem Generating Station Public Service Electric & Gas Company Hancock's Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Boron Injection Tank and Boric Acid Storage Tanks outside Technical Specification Lita.its CONDITIONS PRIOR TO OCCURRENCE:

Operational Mode 1 Reactor Power 99%

DESCRIPTION OF OCCURRENCE:

On 1-11-79, while replenishing the boric acid solution in the Boric Acid Storage Tanks (BAT) analysis showed the boric acid concentration exceeded Technical Specification limits in both tanks. At 0415 hours0.0048 days <br />0.115 hours <br />6.861772e-4 weeks <br />1.579075e-4 months <br />, Action Statement (a) for T/S 3.1.2.8 was implemented. By 1625 hours0.0188 days <br />0.451 hours <br />0.00269 weeks <br />6.183125e-4 months <br />, dilution had reduced the boron concentration to within required limits and the Action Statement was terminated. Analysis at 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> on 1-12-79 showed 16,161 ppm boron in the Boron Injection Tank (BIT), 17,500 ppm boron in No. 11 BAT and 16,600 ppm boron in No. 12 BAT. The Action Statement for T/S 3.,5.4.1 and Action Statement (a) for T/S 3.1.2.8 were initiated. No. 12 BAT was isolated and batching operation commenced to increase the boron concentration in the BIT and No. 11 BAT. At 0656, boron analysis showed the BIT to be in T/S compliance and the Action Statement for T/S 3.5.4.1 was terminated. Reanalysis at 1055 hours0.0122 days <br />0.293 hours <br />0.00174 weeks <br />4.014275e-4 months <br /> indicated 18,522 ppm boron in the BIT and the Action Statement for T/S 3.5.4.1 was again initiated. At 1155 hours0.0134 days <br />0.321 hours <br />0.00191 weeks <br />4.394775e-4 months <br />, a load reduction was commenced to comply with the Action Statement. At 1415, after a review of the occurrence with the NRC, a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> retention to the limiting condition for operation was granted for T/S 3.5.4.1. The BIT and No. 11 BAT were returned to the required boron concentration by 0141, 1-13-79 and the T/S Action Statements were terminated.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The cause of this occurrence was personnel *error during replenishing operations to make up for normal plant boric acid usage. The high con-centration on 1-11-79 occurred due to an improperly mixed batch of boron solution which was pumped to the BAT's. The low boron concentration on 1-12-79 resulted from an operator pumping the boron concentrates tank to the BAT's with a demineralized.water valve to the concentrates transfer pump suction partially open.

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LER 79-08/0JL ANALYSIS OF OCCURRENCE:

Technical Specification 3.5.4.1 with the NRC extension requires that with the Boron Injection Tank inoperable, restore the tank to operable status within one hour or be in Hot Standby and borated to a shutdown margin equivalent to 1% 6K/K at 200°F within the next 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />; restore the tank to operable status within the next seven days or be in Hot Shutdown within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. The boron concentration in the BIT was within specification and the BIT was returned to service within the 18 hour2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br /> extension granted by the NRC.

Action Statement (a) for T/S 3.1.2.8 requires that with the Boric Acid Storage System inoperable, restore the storage syst~m to operable within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least Hot Standby within the next six hours and borated to a Shutdown Margin equivalent to at least 1% 6K/K at 200°F; restore the Boric Acid Storage System to operable status within the next seven days or be in Cold Shutdown within the next 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. One Boric Acid Storage Tank operable meets the requirement of this Action Statement. No. 11 BAT was operable within 20 hours2.314815e-4 days <br />0.00556 hours <br />3.306878e-5 weeks <br />7.61e-6 months <br /> of the discovered discrepancy.

CORRECTIVE ACTION:

The operating procedure for adding boron solution to the storage tanks has been revised to prevent inoperability of the boration system due to an out of specification boron concentration. The operators have been reinstructed in the proper procedure for mixing and transferring boron solution.

FAILURE DATA:

Not Applicable Prepared by A. W. Kapple  ;/<7, )~~ J~- ._)

Manaefer7S'a~ating station SORC Meeting No. 8-79