Event Notification Report for December 29, 2013
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/28/2013 - 12/29/2013
EVENT NUMBERS
49678
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
Power Reactor
Event Number: 49678
Facility: MILLSTONE
Region: 1 State: CT
Unit: [] [] [3]
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: MICHAEL SOCHA
HQ OPS Officer: JOHN SHOEMAKER
Region: 1 State: CT
Unit: [] [] [3]
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: MICHAEL SOCHA
HQ OPS Officer: JOHN SHOEMAKER
Notification Date: 12/29/2013
Notification Time: 15:25 [ET]
Event Date: 12/29/2013
Event Time: 07:44 [EST]
Last Update Date: 02/27/2014
Notification Time: 15:25 [ET]
Event Date: 12/29/2013
Event Time: 07:44 [EST]
Last Update Date: 02/27/2014
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
10 CFR Section:
50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
JAMES DWYER (R1DO)
JAMES DWYER (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 |
SWITCHGEAR ROOM DOOR DISCOVERED UNLATCHED
"A condition was discovered on December 29, 2013 that could have prevented the fulfillment of safety functions to shutdown the reactor and maintain it in a safe shutdown condition and mitigate the consequences of an accident.
"On December 29, 2013, a water tight door between the East Switchgear and Service Building was discovered not dogged (unlatched). Upon discovery, the safety function was immediately restored by properly dogging (latching) the subject door.
"The subject door between the East Switchgear and Service Building protects both trains' of safety related switchgears. The access Key Log indicates the door was in the condition for approximately 60 minutes. If the door is inoperable, then T.S. 3.0.3 applies.
"This condition is being reported pursuant to 10CFR50.72(b)(3)(v)(A) and 10CFR50.72(b)(3))(v)(D).
"The NRC Resident lnspector has been notified [by the licensee]."
The licensee has notified state and local authorities.
The door is required to be properly secured to protect the East Switchgear from a potential High Energy Line Break and was left improperly dogged by a security officer while making rounds. Millstone Unit 3 did not enter T.S.3.0.3 and continues to operate at 100%.
* * * RETRACTION FROM GARY CLOSIUS TO JOHN SHOEMAKER AT 1402 EST ON 2/27/14 * * *
"Upon further review the fact that the switchgear room door was closed but not latched did not render the switchgear within the room inoperable, and therefore, there was no loss of safety function. The engineering evaluation determined the switchgear would have been protected for high energy line break, flooding, and tornado pressure drop events. Additionally, the carbon dioxide fire suppression capability would have also been maintained. The details of the engineering review will be provided to the NRC Senior Resident Inspector. "
Notified R1DO (DeFrancisco).
"A condition was discovered on December 29, 2013 that could have prevented the fulfillment of safety functions to shutdown the reactor and maintain it in a safe shutdown condition and mitigate the consequences of an accident.
"On December 29, 2013, a water tight door between the East Switchgear and Service Building was discovered not dogged (unlatched). Upon discovery, the safety function was immediately restored by properly dogging (latching) the subject door.
"The subject door between the East Switchgear and Service Building protects both trains' of safety related switchgears. The access Key Log indicates the door was in the condition for approximately 60 minutes. If the door is inoperable, then T.S. 3.0.3 applies.
"This condition is being reported pursuant to 10CFR50.72(b)(3)(v)(A) and 10CFR50.72(b)(3))(v)(D).
"The NRC Resident lnspector has been notified [by the licensee]."
The licensee has notified state and local authorities.
The door is required to be properly secured to protect the East Switchgear from a potential High Energy Line Break and was left improperly dogged by a security officer while making rounds. Millstone Unit 3 did not enter T.S.3.0.3 and continues to operate at 100%.
* * * RETRACTION FROM GARY CLOSIUS TO JOHN SHOEMAKER AT 1402 EST ON 2/27/14 * * *
"Upon further review the fact that the switchgear room door was closed but not latched did not render the switchgear within the room inoperable, and therefore, there was no loss of safety function. The engineering evaluation determined the switchgear would have been protected for high energy line break, flooding, and tornado pressure drop events. Additionally, the carbon dioxide fire suppression capability would have also been maintained. The details of the engineering review will be provided to the NRC Senior Resident Inspector. "
Notified R1DO (DeFrancisco).