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Event Notification Report for April 4, 2007

U.S. Nuclear Regulatory Commission Operations Center Event Reports For 04/03/2007 - 04/04/2007 ** EVENT NUMBERS ** 43272 Power Reactor Event Number: 43272 Facility: INDIAN POINT Region: 1 State: NY Unit: [ ] [3] [ ] RX Type: [2] W-4-LP,[3] W-4-LP NRC Notified By: PHIL SANTINI HQ OPS Officer: MARK ABRAMOVITZ Notification Date: 04/03/2007 Notification Time: 05:07 [ET] Event Date: 04/03/2007 Event Time: 04:16 [EDT] Last Update Date: 04/03/2007 Emergency Class: NON EMERGENCY 10 CFR Section: 50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION Person (Organization): HAROLD GRAY (R1) BILL BATEMAN (NRR) CATHY HANEY (NRR) JEFFREY CRUZ (IRD) Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode 3 M/R Y 60 Power Operation 0 Hot Standby Event Text MANUAL REACTOR TRIP WHILE PERFORMING BOILER FEED PUMP MAINTENANCE "The Indian Point Unit 3 reactor was manually tripped at 04:16 on 4/3/2007 due to low steam generator levels that occurred while the 31 MBFP [main boiler feed pump] speed control was being isolated for maintenance. Indian Point Unit 3 is currently in mode 3 with all automatic actions for a manual reactor trip occurring as required. Unit 2 was unaffected and remains in mode 1 at 100% power." The reactor was manually tripped when steam generator levels reduced to 18% in all four steam generators. All rods inserted on the trip. No safety or relief valves lifted due to the trip. The motor driven aux feedwater pumps automatically started on low steam generator level and are being used to maintain steam generator level. Atmospheric steam dumps are maintaining reactor temperature. The Unit 3 electrical lineup is the normal shutdown electrical lineup. The licensee has notified the state Public Service Commission. The licensee will notify the NRC Resident Inspector.

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