Event Notification Report for June 11, 2017
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
06/10/2017 - 06/11/2017
EVENT NUMBERS
52801
52801
Power Reactor
Event Number: 52801
Facility: INDIAN POINT
Region: 1 State: NY
Unit: [] [3] []
RX Type: [2] W-4-LP,[3] W-4-LP
NRC Notified By: CLIFTON GATES
HQ OPS Officer: JEFF ROTTON
Region: 1 State: NY
Unit: [] [3] []
RX Type: [2] W-4-LP,[3] W-4-LP
NRC Notified By: CLIFTON GATES
HQ OPS Officer: JEFF ROTTON
Notification Date: 06/11/2017
Notification Time: 14:35 [ET]
Event Date: 06/11/2017
Event Time: 09:11 [EDT]
Last Update Date: 06/11/2017
Notification Time: 14:35 [ET]
Event Date: 06/11/2017
Event Time: 09:11 [EDT]
Last Update Date: 06/11/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD
10 CFR Section:
50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD
Person (Organization):
BLAKE WELLING (R1DO)
BLAKE WELLING (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 3 | N | Y | 100 | Power Operation | 100 | Power Operation |
EXCESSIVE BONNET LEAKAGE FROM CHEMICAL VOLUME CONTROL SYSTEM VALVE
"At Indian Point Energy Center [IPEC], Unit 3 normal letdown was isolated due to a significant body/bonnet leak on the inlet valve to Reactor Coolant Filter. Shift team took action to isolate letdown and stop the leak. The Abnormal Operating Procedure (AOP) was entered, normal letdown was isolated per procedure, and excess letdown was placed in service to balance inventory at 61 percent Pressurizer Level. This was above the Technical Specification [3.4.9] level of 54.3 percent which was exceeded at 0911 [EDT], putting the unit in a 6-hour shutdown action statement. The valve body/bonnet was torqued, successfully eliminating the leakage. Pressurizer Level was restored to the normal control band and the AOP was exited at 1136. The SM [Shift Manager] estimated the leakage at 18 gallons per minute when leak was active. No EAL [Emergency Action Level] thresholds were exceeded. This occurrence is considered a safety system functional failure per 10 CFR 50.72(b)(3)(v)(A), requiring an 8-hour NRC report. Both IPEC units are stable at full power."
The licensee has notified the NRC Resident Inspector and the New York State Public Service Commission.
"At Indian Point Energy Center [IPEC], Unit 3 normal letdown was isolated due to a significant body/bonnet leak on the inlet valve to Reactor Coolant Filter. Shift team took action to isolate letdown and stop the leak. The Abnormal Operating Procedure (AOP) was entered, normal letdown was isolated per procedure, and excess letdown was placed in service to balance inventory at 61 percent Pressurizer Level. This was above the Technical Specification [3.4.9] level of 54.3 percent which was exceeded at 0911 [EDT], putting the unit in a 6-hour shutdown action statement. The valve body/bonnet was torqued, successfully eliminating the leakage. Pressurizer Level was restored to the normal control band and the AOP was exited at 1136. The SM [Shift Manager] estimated the leakage at 18 gallons per minute when leak was active. No EAL [Emergency Action Level] thresholds were exceeded. This occurrence is considered a safety system functional failure per 10 CFR 50.72(b)(3)(v)(A), requiring an 8-hour NRC report. Both IPEC units are stable at full power."
The licensee has notified the NRC Resident Inspector and the New York State Public Service Commission.