Alert

Due to a lapse in appropriations, the NRC has ceased normal operations. However, excepted and exempted activities necessary to maintain critical health and safety functions—as well as essential progress on designated critical activities, including those specified in Executive Order 14300—will continue, consistent with the OMB-Approved NRC Lapse Plan.

Part 21 Report - 1998-102

ACCESSION #: 9801160144

POWER REACTOR		EVENT NUMBER:	33536
FACILITY: INDIAN POINT	REGION: 1	NOTIFICATION DATE:	01/14/98
UNIT: [2] [ ] [ ]	STATE: NY	NOTIFICATION TIME:	17:14 (ET]
RX TYPE: [2]W-4-LP, [3] W-4-LP		EVENT DATE:	01/14/98
		EVENT TIME:	15:00[EST]
NRC NOTIFIED BY:	PHIL SANTIANI	LAST UPDATE DATE:	01/14/98
HQ OPS OFFICER:	DICK JOLLIFFE	NOTIFICATIONS
EMERGENCY CLASS:	NOT APPLICABLE
10 CFR SECTION:	JOHN ROGGE	RDO
CDEG 21.21(c)(3)(i)	DEFECTS/NONCOMPLIANCE
		VERN HODGE	NRR

UNIT	SCRAM CODE	RX CRIT	INIT PWR	INIT RX MODE	CURR PWR	CURR RX MODE
2	N	N	0	COLD SHUTDOWN	0	COLD SHUTDOWN

EVENT TEXT

- 10CFR PART 21 REPORT -

TWELVE SAFETY-RELATED 480-VOLT WESTINGHOUSE MODEL #DB-50 CIRCUIT BREAKERS WERE SENT TO WESTINGHOUSE REPAIR AND REPLACEMENT SERVICES, CHESWICK, PA, AN APPROVED 10CFR50, APPENDIX B QUALIFIED REPAIR FACILITY, FOR OVERHAUL.

DURING PRE-INSTALLATION TESTING, THE LICENSEE DETERMINED THAT LOW TRIP BAR FORCES AND THE WINDING OF THE TRIP PAN SPRING CONTRIBUTED TO BREAKER MIS-OPERATION. IF INSTALLED, THIS MIS-OPERATION MIGHT HAVE RESULTED IN THE BREAKERS MALFUNCTIONING WHEN CALLED UPON TO PERFORM THEIR SAFETY-RELATED FUNCTION.

THESE BREAKER ANOMALIES WERE PREVIOUSLY REPORTED TO THE NRC IN LER #97-024.

THE LICENSEE PLANS TO REPAIR AND TEST THESE BREAKERS (AND THE REMAINING 38 SAFETY-RELATED 480-VOLT BREAKERS) ON-SITE PRIOR TO INSTALLATION.