Event Notification Report for February 19, 2017
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
02/18/2017 - 02/19/2017
EVENT NUMBERS
52567
Power Reactor
Event Number: 52567
Facility: HATCH
Region: 2 State: GA
Unit: [] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: RODGER LOWER
HQ OPS Officer: HOWIE CROUCH
Region: 2 State: GA
Unit: [] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: RODGER LOWER
HQ OPS Officer: HOWIE CROUCH
Notification Date: 02/20/2017
Notification Time: 01:14 [ET]
Event Date: 02/19/2017
Event Time: 23:23 [EST]
Last Update Date: 02/20/2017
Notification Time: 01:14 [ET]
Event Date: 02/19/2017
Event Time: 23:23 [EST]
Last Update Date: 02/20/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(A) - DEGRADED CONDITION
10 CFR Section:
50.72(b)(3)(ii)(A) - DEGRADED CONDITION
Person (Organization):
BRIAN BONSER (R2DO)
BRIAN BONSER (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | N | 0 | Refueling | 0 | Refueling |
CONTAINMENT PENETRATION EXCEEDED ALLOWABLE LEAKAGE
"On 2/19/2017 at 2323 EST, during LLRT [local leak rate test] testing per 42SV-TET-001-2, 2T48F320 exceeded the maximum allowable leakage limit. The companion isolation valve in the same line (2T48F319) had previously failed LLRT. The failure of the 2T48F320 represents a failure of the 2T23X26 penetration to maintain primary containment integrity.
"This event is reportable per 10CFR50.72(b)(3)(ii)(A) since the failure of the 2T23X26 penetration caused primary containment leakage to exceed La [allowable leakage] and thus represents a degraded principle safety barrier.
"CR [condition report] 10333178.
"NRC Resident Inspector has been notified."
2T48F319 and 2T48F320 are 18 inch dampers.
This event places the licensee in a Technical Specification limit that requires the dampers to be repaired and pass LLRT prior to the plant entering Mode 3.
"On 2/19/2017 at 2323 EST, during LLRT [local leak rate test] testing per 42SV-TET-001-2, 2T48F320 exceeded the maximum allowable leakage limit. The companion isolation valve in the same line (2T48F319) had previously failed LLRT. The failure of the 2T48F320 represents a failure of the 2T23X26 penetration to maintain primary containment integrity.
"This event is reportable per 10CFR50.72(b)(3)(ii)(A) since the failure of the 2T23X26 penetration caused primary containment leakage to exceed La [allowable leakage] and thus represents a degraded principle safety barrier.
"CR [condition report] 10333178.
"NRC Resident Inspector has been notified."
2T48F319 and 2T48F320 are 18 inch dampers.
This event places the licensee in a Technical Specification limit that requires the dampers to be repaired and pass LLRT prior to the plant entering Mode 3.