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INDIAN POINT-3 - INADVERTANT SCRAM DURING ELECTRICAL MAINTENANCE
INDIAN POINT-3 - NOTIFICATION DATE: 06/22/2003
AUTOMATIC REACTOR TRIP WITH AFW ACTUATION
The following information was obtained from the licensee via facsimile:
"In order to support maintenance on feeder W-98 [Distribution Line], 345 KV Circuit Breaker #3 was opened. Indian Point 3 remained in service utilizing the feed via 345 KV Circuit Breaker #1. After Con Edison completed maintenance on W-98, at 17:42 [EDT] an attempt was made to close 345 KV Circuit Breaker #3. While attempting to close 345 KV Circuit Breaker #3, a fault occurred, resulting in an automatic Generator Trip, Reactor Trip and Turbine Trip.
"Automatic Safety Features operated as required, with all control rods inserting.
"Decay heat is being removed by the Steam Generators, with make up provided by Auxiliary Feedwater with steam being relieved to the Main Condenser.
"Off site power feeders remained available. Off Site power is currently stable and providing power to all 480 Volt Safeguards Buses. Automatic start and operation of the Emergency Diesel 'G' was not required."
The licensee has notified the NRC Resident Inspector.
+------------------------------------------------------------------------------+ |Power Reactor |Event Number: 39955 | +------------------------------------------------------------------------------+ +------------------------------------------------------------------------------+ | FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 06/22/2003| | UNIT: [] [3] [] STATE: NY |NOTIFICATION TIME: 21:18[EDT]| | RXTYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 06/22/2003| +------------------------------------------------+EVENT TIME: 17:42[EDT]| | NRC NOTIFIED BY: ANDY BARTLIK |LAST UPDATE DATE: 06/22/2003| | HQ OPS OFFICER: BILL GOTT +-----------------------------+ +------------------------------------------------+PERSON ORGANIZATION | |EMERGENCY CLASS: NON EMERGENCY |KENNETH JENISON R1 | |10 CFR SECTION: |RICHARD WESSMAN IRO | |ARPS 50.72(b)(2)(iv)(B) RPS ACTUATION - CRITICA|HERB BERKOW NRR | |AESF 50.72(b)(3)(iv)(A) VALID SPECIF SYS ACTUAT| | | | | | | | +-----+----------+-------+--------+-----------------+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | |3 A/R Y 100 Power Operation |0 Hot Standby | | | | +------------------------------------------------------------------------------+
Source: The above is excerpted from
NRC Operations Center,
Event Notification Report for June 23, 2003