Event Notification Report for May 23, 2014
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/22/2014 - 05/23/2014
Power Reactor
Event Number: 50136
Facility: MONTICELLO
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: JEREMY TANNER
HQ OPS Officer: DANIEL MILLS
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: JEREMY TANNER
HQ OPS Officer: DANIEL MILLS
Notification Date: 05/23/2014
Notification Time: 16:57 [ET]
Event Date: 05/23/2014
Event Time: 11:30 [CDT]
Last Update Date: 05/23/2014
Notification Time: 16:57 [ET]
Event Date: 05/23/2014
Event Time: 11:30 [CDT]
Last Update Date: 05/23/2014
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
STEVE ORTH (R3DO)
STEVE ORTH (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 88 | Power Operation | 88 | Power Operation |
LOSS OF ASSESSMENT CAPABILITY DUE TO FAILED AREA RADIATION MONITOR
"At 1130 CDT, an Area Radiation Monitor (ARM) was determined to be non-functional as a result of a failed calibration test. This represents a loss of assessment capability reportable under 10CFR50.72(b)(3)(xiii). A portable radiation monitor has been placed in the affected area as a compensatory measure.
"The health and safety of the public was protected as the plant was in a normal condition with no initiating event in progress or signs of elevated radiation levels on any other radiation monitors.
"The NRC Resident Inspector has been notified."
The failed ARM is located in the 'A' RHR core spray room.
"At 1130 CDT, an Area Radiation Monitor (ARM) was determined to be non-functional as a result of a failed calibration test. This represents a loss of assessment capability reportable under 10CFR50.72(b)(3)(xiii). A portable radiation monitor has been placed in the affected area as a compensatory measure.
"The health and safety of the public was protected as the plant was in a normal condition with no initiating event in progress or signs of elevated radiation levels on any other radiation monitors.
"The NRC Resident Inspector has been notified."
The failed ARM is located in the 'A' RHR core spray room.
Power Reactor
Event Number: 50134
Facility: PILGRIM
Region: 1 State: MA
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: KEN GOODALL
HQ OPS Officer: CHARLES TEAL
Region: 1 State: MA
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: KEN GOODALL
HQ OPS Officer: CHARLES TEAL
Notification Date: 05/23/2014
Notification Time: 15:32 [ET]
Event Date: 05/23/2014
Event Time: 12:10 [EDT]
Last Update Date: 05/23/2014
Notification Time: 15:32 [ET]
Event Date: 05/23/2014
Event Time: 12:10 [EDT]
Last Update Date: 05/23/2014
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
HAROLD GRAY (R1DO)
HAROLD GRAY (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
OFFSITE NOTIFICATION - RELEASE OF HYDROGEN GAS IN EXCESS OF REPORTABLE QUANTITY
"At 1210 EDT on Friday, May 23, 2014, the Massachusetts Department of Environmental Protection and the Plymouth Massachusetts Fire Department were notified of a hydrogen release in accordance with plant procedures and 310CMR40.300, Massachusetts Contingency Plan Notification for Oil and Hazardous Material; Identification and Listing of Oil and Hazardous Material. This was due to a release of hydrogen gas to the environment exceeding the reportable quantity of ten pounds. The release was from the generator hydrogen cooling system. There was no plant damage. Hydrogen system pressure has been restored to the normal operating band and is stable. The cause of the event is under investigation.
"This event posed no danger to the health and safety of plant personnel or members of the general public.
"The NRC Resident Inspector has been notified."
"At 1210 EDT on Friday, May 23, 2014, the Massachusetts Department of Environmental Protection and the Plymouth Massachusetts Fire Department were notified of a hydrogen release in accordance with plant procedures and 310CMR40.300, Massachusetts Contingency Plan Notification for Oil and Hazardous Material; Identification and Listing of Oil and Hazardous Material. This was due to a release of hydrogen gas to the environment exceeding the reportable quantity of ten pounds. The release was from the generator hydrogen cooling system. There was no plant damage. Hydrogen system pressure has been restored to the normal operating band and is stable. The cause of the event is under investigation.
"This event posed no danger to the health and safety of plant personnel or members of the general public.
"The NRC Resident Inspector has been notified."