Event Notification Report for September 30, 2017
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
09/29/2017 - 09/30/2017
EVENT NUMBERS
52996
Power Reactor
Event Number: 52996
Facility: NINE MILE POINT
Region: 1 State: NY
Unit: [] [2] []
RX Type: [1] GE-2,[2] GE-5
NRC Notified By: CHRIS MOORHEAD
HQ OPS Officer: STEVE SANDIN
Region: 1 State: NY
Unit: [] [2] []
RX Type: [1] GE-2,[2] GE-5
NRC Notified By: CHRIS MOORHEAD
HQ OPS Officer: STEVE SANDIN
Notification Date: 09/30/2017
Notification Time: 09:06 [ET]
Event Date: 09/30/2017
Event Time: 01:34 [EDT]
Last Update Date: 09/30/2017
Notification Time: 09:06 [ET]
Event Date: 09/30/2017
Event Time: 01:34 [EDT]
Last Update Date: 09/30/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
Person (Organization):
FRED BOWER (R1DO)
FRED BOWER (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
SECONDARY CONTAINMENT DECLARED INOPERABLE
"At 0134 [EDT] on September 30, 2017, Nine Mile Point Unit 2 entered Tech Spec 3.6.4.1 when secondary containment was declared inoperable due to secondary containment differential pressure being above the Tech Spec Surveillance Requirement of -0.25 inches vacuum water gauge. The Division II Standby Gas Treatment System was started to restore differential pressure at 0135 [EDT] on September 30, 2017 the differential pressure was restored, the secondary containment was declared operable and the Tech Spec3.6.4.1 exited.
"Secondary containment being inoperable is a 8-hour report for 10 CFR 50.72(b)(3)(v)(C), Any event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to mitigate the consequences of an accident.
"The cause of this condition is being investigated.
"The NRC Resident Inspector has been notified."
The licensee will also inform the State of New York.
"At 0134 [EDT] on September 30, 2017, Nine Mile Point Unit 2 entered Tech Spec 3.6.4.1 when secondary containment was declared inoperable due to secondary containment differential pressure being above the Tech Spec Surveillance Requirement of -0.25 inches vacuum water gauge. The Division II Standby Gas Treatment System was started to restore differential pressure at 0135 [EDT] on September 30, 2017 the differential pressure was restored, the secondary containment was declared operable and the Tech Spec3.6.4.1 exited.
"Secondary containment being inoperable is a 8-hour report for 10 CFR 50.72(b)(3)(v)(C), Any event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to mitigate the consequences of an accident.
"The cause of this condition is being investigated.
"The NRC Resident Inspector has been notified."
The licensee will also inform the State of New York.