Event Notification Report for May 05, 2013
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/04/2013 - 05/05/2013
EVENT NUMBERS
49002
Power Reactor
Event Number: 49002
Facility: PALISADES
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] CE
NRC Notified By: TODD MULFORD
HQ OPS Officer: BILL HUFFMAN
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] CE
NRC Notified By: TODD MULFORD
HQ OPS Officer: BILL HUFFMAN
Notification Date: 05/05/2013
Notification Time: 01:45 [ET]
Event Date: 05/05/2013
Event Time: 01:12 [EDT]
Last Update Date: 05/05/2013
Notification Time: 01:45 [ET]
Event Date: 05/05/2013
Event Time: 01:12 [EDT]
Last Update Date: 05/05/2013
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(i) - PLANT S/D REQD BY TS
10 CFR Section:
50.72(b)(2)(i) - PLANT S/D REQD BY TS
Person (Organization):
ERIC DUNCAN (R3DO)
ERIC DUNCAN (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 88 | Power Operation |
TECHNICAL SPECIFICATION SHUTDOWN - SAFETY INJECTION REFUELING WATER TANK DECLARED INOPERABLE DUE TO LEAK
"At 0112 EDT on May 5, 2013, the plant commenced a shutdown due to water leakage from the SIRW (Safety Injection Refueling Water) Tank exceeding the operational decision-making issue process trigger point of 34 gallons per day, causing it [the SIRW] to be declared inoperable and requiring entry into Technical Specification LCO 3.5.4 Condition B. LCO 3.5.4 Condition B requires the SIRW Tank to be returned to Operable status within one hour or entry into Condition C which requires the plant to be in Mode 3 within 6 hours and Mode 5 within 36 hours.
"This event had no impact on the health and / or safety of the public.
"The NRC Resident has been notified.
"The exact location of the leakage has not been determined at this time. The Plant will be taken to Mode 5."
The licensee has been operating with SIRW leakage at a rate of less than 34 gallons per day. The leakage has increased for unknown reasons to a calculated value of approximately 90 gallons per day.
See EN #48018 dated 06/12/12 for similar report on a technical specification shutdown for the SIRW tank leakage.
"At 0112 EDT on May 5, 2013, the plant commenced a shutdown due to water leakage from the SIRW (Safety Injection Refueling Water) Tank exceeding the operational decision-making issue process trigger point of 34 gallons per day, causing it [the SIRW] to be declared inoperable and requiring entry into Technical Specification LCO 3.5.4 Condition B. LCO 3.5.4 Condition B requires the SIRW Tank to be returned to Operable status within one hour or entry into Condition C which requires the plant to be in Mode 3 within 6 hours and Mode 5 within 36 hours.
"This event had no impact on the health and / or safety of the public.
"The NRC Resident has been notified.
"The exact location of the leakage has not been determined at this time. The Plant will be taken to Mode 5."
The licensee has been operating with SIRW leakage at a rate of less than 34 gallons per day. The leakage has increased for unknown reasons to a calculated value of approximately 90 gallons per day.
See EN #48018 dated 06/12/12 for similar report on a technical specification shutdown for the SIRW tank leakage.