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 **

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.

Page Last Reviewed/Updated Thursday, March 25, 2021