Event Notification Report for December 28, 2014
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/27/2014 - 12/28/2014
EVENT NUMBERS
50705
Power Reactor
Event Number: 50705
Facility: MONTICELLO
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: WILLIAM STANG
HQ OPS Officer: JEFF ROTTON
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: WILLIAM STANG
HQ OPS Officer: JEFF ROTTON
Notification Date: 12/29/2014
Notification Time: 03:40 [ET]
Event Date: 12/28/2014
Event Time: 20:23 [CST]
Last Update Date: 12/29/2014
Notification Time: 03:40 [ET]
Event Date: 12/28/2014
Event Time: 20:23 [CST]
Last Update Date: 12/29/2014
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD 50.72(b)(3)(v)(B) - POT RHR INOP 50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL 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)(B) - POT RHR INOP 50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
BILLY DICKSON (R3DO)
BILLY DICKSON (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 93 | Power Operation | 93 | Power Operation |
TWO INOPERABLE EMERGENCY DIESEL GENERATORS
"While the 12 Emergency Diesel Generator (EDG) was inoperable for performance of the monthly surveillance, adjustments were inadvertently made to 11 EDG which made it inoperable. As a result, Technical Specification [TS] 3.8.1 Condition E, for both EDG's inoperable was entered. Monticello has subsequently restored 12 EDG to an operable status within the 2 hour TS LCO [Limiting Condition for Operation] completion timer requirement. The station remained in a safe condition during this discovery with 12 EDG available at all times. The plant continues to operate in a normal condition with no initiating events present. The health and safety of the public was not impacted as a result of this condition.
"The NRC Resident Inspector has been notified."
EDG 12 was restored to operable status at 2214 CST and EDG 11 will remain inoperable until a surveillance test is performed to start the EDG and restore the local governor control idle speed to the correct setting.
The licensee will be notifying the Minnesota State Duty Officer.
"While the 12 Emergency Diesel Generator (EDG) was inoperable for performance of the monthly surveillance, adjustments were inadvertently made to 11 EDG which made it inoperable. As a result, Technical Specification [TS] 3.8.1 Condition E, for both EDG's inoperable was entered. Monticello has subsequently restored 12 EDG to an operable status within the 2 hour TS LCO [Limiting Condition for Operation] completion timer requirement. The station remained in a safe condition during this discovery with 12 EDG available at all times. The plant continues to operate in a normal condition with no initiating events present. The health and safety of the public was not impacted as a result of this condition.
"The NRC Resident Inspector has been notified."
EDG 12 was restored to operable status at 2214 CST and EDG 11 will remain inoperable until a surveillance test is performed to start the EDG and restore the local governor control idle speed to the correct setting.
The licensee will be notifying the Minnesota State Duty Officer.