Event Notification Report for January 19, 2015
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
01/18/2015 - 01/19/2015
Power Reactor
Event Number: 50836
Facility: MILLSTONE
Region: 1 State: CT
Unit: [] [] [3]
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: MICHEL CICCONE
HQ OPS Officer: MARK ABRAMOVITZ
Region: 1 State: CT
Unit: [] [] [3]
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: MICHEL CICCONE
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 02/20/2015
Notification Time: 00:49 [ET]
Event Date: 01/19/2015
Event Time: 20:18 [EST]
Last Update Date: 02/20/2015
Notification Time: 00:49 [ET]
Event Date: 01/19/2015
Event Time: 20:18 [EST]
Last Update Date: 02/20/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
RAY POWELL (R1DO)
RAY POWELL (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 |
HIGH ENERGY LINE BREAK BOUNDARY DOOR NOT LATCHING
"A High Energy Line Break (HELB) boundary door was discovered not latching. HELB boundary affects both trains of safety related [480V] switchgear and was not operable for approximately seven minutes. [The licensee] entered the technical specification action statement, restored the door to functional, and exited the technical specification action statement."
The licensee notified the NRC Resident Inspector, the State of Connecticut and local officials.
"A High Energy Line Break (HELB) boundary door was discovered not latching. HELB boundary affects both trains of safety related [480V] switchgear and was not operable for approximately seven minutes. [The licensee] entered the technical specification action statement, restored the door to functional, and exited the technical specification action statement."
The licensee notified the NRC Resident Inspector, the State of Connecticut and local officials.
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
Power Reactor
Event Number: 50744
Facility: WOLF CREEK
Region: 4 State: KS
Unit: [1] [] []
RX Type: [1] W-4-LP
NRC Notified By: PIERCE C. MOORE
HQ OPS Officer: VINCE KLCO
Region: 4 State: KS
Unit: [1] [] []
RX Type: [1] W-4-LP
NRC Notified By: PIERCE C. MOORE
HQ OPS Officer: VINCE KLCO
Notification Date: 01/19/2015
Notification Time: 14:24 [ET]
Event Date: 01/19/2015
Event Time: 11:00 [CST]
Last Update Date: 03/16/2015
Notification Time: 14:24 [ET]
Event Date: 01/19/2015
Event Time: 11:00 [CST]
Last Update Date: 03/16/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
DAVID PROULX (R4DO)
DAVID PROULX (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
MISSILE DOOR MISALIGNED RESULTS IN A REDUCTION IN ACCIDENT MITIGATION
"The missile door (door 33012) protecting Class 1E Engineered Safety Features (ESF) buses NB01/NB02 switchgear rooms was discovered misaligned on its hinge and stuck partially open and not capable of being closed. The missile door has since been repaired and closed. Technical Specification (TS) 3.8.9, 'Distribution Systems- Operating,' was declared not met and Condition F entered when the immediate operability determination identified that buses NB01 and NB02 were inoperable. Condition F of TS 3.8.9 requires immediate entry into Limiting Condition for Operation (LCO) 3.0.3. LCO 3.0.3 was entered at 1100 CST and subsequently exited when the missile door was repaired at 1118 CST. The unit was in and still is in MODE 1 at 100% power. No actions were initiated to commence a unit shut down. The NRC resident inspector was contacted regarding this event. All systems functioned as expected."
* * * RETRACTION FROM TRAVIS ROHLFING TO HOWIE CROUCH AT 1458 EDT ON 3/16/15 * * *
"The licensee is retracting this event based on the following:
"An engineering evaluation concluded that the weather conditions during the period of the event did not result in the threat of a tornado. Given that the weather during the event would not have presented a valid threat of a tornado, the stuck open missile door would not have prevented the ESF busses and the DGs [Diesel Generators] from performing their specified safety function. The ESF busses and the DGs were considered OPERABLE but degraded. This is analogous to Example 4 in RIS 2001-09, 'Control of Hazard Barriers', with the exception that this event did not occur as a result of planned maintenance or a plant modification. As such, this event has been determined to not be reportable per 10 CFR 50.72(b)(3)(v)(D)."
The licensee has notified the NRC Resident Inspector. Notified R4DO (Gepford).
"The missile door (door 33012) protecting Class 1E Engineered Safety Features (ESF) buses NB01/NB02 switchgear rooms was discovered misaligned on its hinge and stuck partially open and not capable of being closed. The missile door has since been repaired and closed. Technical Specification (TS) 3.8.9, 'Distribution Systems- Operating,' was declared not met and Condition F entered when the immediate operability determination identified that buses NB01 and NB02 were inoperable. Condition F of TS 3.8.9 requires immediate entry into Limiting Condition for Operation (LCO) 3.0.3. LCO 3.0.3 was entered at 1100 CST and subsequently exited when the missile door was repaired at 1118 CST. The unit was in and still is in MODE 1 at 100% power. No actions were initiated to commence a unit shut down. The NRC resident inspector was contacted regarding this event. All systems functioned as expected."
* * * RETRACTION FROM TRAVIS ROHLFING TO HOWIE CROUCH AT 1458 EDT ON 3/16/15 * * *
"The licensee is retracting this event based on the following:
"An engineering evaluation concluded that the weather conditions during the period of the event did not result in the threat of a tornado. Given that the weather during the event would not have presented a valid threat of a tornado, the stuck open missile door would not have prevented the ESF busses and the DGs [Diesel Generators] from performing their specified safety function. The ESF busses and the DGs were considered OPERABLE but degraded. This is analogous to Example 4 in RIS 2001-09, 'Control of Hazard Barriers', with the exception that this event did not occur as a result of planned maintenance or a plant modification. As such, this event has been determined to not be reportable per 10 CFR 50.72(b)(3)(v)(D)."
The licensee has notified the NRC Resident Inspector. Notified R4DO (Gepford).