Part 21 Report - 1996-570

 
 
ACCESSION #: 9608300075

Public Service
Electric and Gas
Company

E. C. Simpson      Public Service Electric and Gas Company  P.O. Box 236,
                   Hancocks Bridge, NJ 08038   609-339-1700

Senior Vice President - Nuclear Engineering

                                        AUG 21 1996

                                        LR-N96257

United States Nuclear Regulatory Commission
Document Control Desk
Washington, DC 20555

Gentlemen:

10CFR21 INTERIM REPORT, GENERAL ELECTRIC 4 KV MAGNE-BLAST BREAKER
LATCHING MECHANISM PROPS
SALEM GENERATING STATION UNITS 1 AND 2
FACILITY OPERATING LICENSE NO.  DPR-70 AND DPR-75
DOCKET NOS.  50-272 AND 50-311

Pursuant to the notification requirements of 10 CFR 21.21(a)(2), Public
Service Electric and Gas Company (PSE&G) is providing this interim report
regarding chipping of latching mechanism props installed in General
Electric 4 kV Magne-Blast circuit breakers, Type AM-4.16-350-2H.  PSE&G
identified this deviation on June 25, 1996.

During 4 kV breaker testing, chipping was observed on the side edge of
props in four spare breakers.  The prop functions to latch the breaker
closed after a closing demand.  No prop failures have occurred.  However,
an evaluation of the effect of the chipping on the structural integrity
of the prop has not been completed.

Two of the affected breakers have been returned to the vendor.  The props
on these breakers will be removed and will be evaluated metallurgically.
The four breakers will not be returned to the plant until the cause for
the chipping has been determined and any required corrective actions
implemented.

PSE&G's evaluation to date has not identified a substantial safety
hazard.  The evaluation for reportability in accordance with 10 CFR 21 is
scheduled to be completed by October 23, 1996.

Document Control Desk             -2-
LR-N96257                                         AUG 21 1996

Should you have any questions, please contact us.

                                   Sincerely,

C    Mr.  H.  J.  Miller, Administrator - Region I
     U.  S.  Nuclear Regulatory Commission
     475 Allendale Road
     King of Prussia, PA 19406

     Mr.  L.  N.  Olshan, Licensing Project Manager Salem
     U.  S.  Nuclear Regulatory Commission
     One White Flint North
     11555 Rockville Pike
     Mail Stop 14E21
     Rockville, MD 20852

     Mr.  C.  Marschall (X24)
     USNRC Senior Resident Inspector

     Mr.  K.  Tosch, Manager IV
     Bureau of Nuclear Engineering
     33 Arctic Parkway
     CN 415
     Trenton, NJ 08625

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