Event Notification Report for April 07, 2014
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
04/06/2014 - 04/07/2014
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
Power Reactor
Event Number: 50004
Facility: PRAIRIE ISLAND
Region: 3 State: MN
Unit: [1] [2] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: GENE DAMMANN
HQ OPS Officer: STEVE SANDIN
Region: 3 State: MN
Unit: [1] [2] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: GENE DAMMANN
HQ OPS Officer: STEVE SANDIN
Notification Date: 04/07/2014
Notification Time: 13:17 [ET]
Event Date: 04/07/2014
Event Time: 06:00 [CDT]
Last Update Date: 05/10/2014
Notification Time: 13:17 [ET]
Event Date: 04/07/2014
Event Time: 06:00 [CDT]
Last Update Date: 05/10/2014
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
Person (Organization):
PATTY PELKE (R3DO)
PATTY PELKE (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
CONTROL ROOM SPECIAL VENT BOUNDARY INOPERABLE
"At approximately 0600 CDT on April 7, 2014, Units 1 and 2 Control Room Special Vent System (CRSVS) Boundary was declared inoperable when a Control Room door handle fell off. Air could be felt flowing through the hole, causing an opening in the Control Room Envelope (CRE) Boundary. An opening reduces the protection of the Control Room Envelope provided to the operators in the event of a Design Basis Accident. The CRSVS Boundary was declared Inoperable, which required entry into Technical Specifications (TS) LCO 3.7.10. Condition B, one or more CRSVS trains inoperable, in MODES 1, 2, 3, or 4. Actions were immediately initiated to implement mitigating actions. A Work Request (WR) was initiated to repair the door, and work is in progress to restore the Control Room Boundary to an operable condition.
"This condition is reportable under 10CFR50.72(b)(3)(v)(C), Event or Condition that Could Have Prevented Fulfillment of a Safety Function.
"The plant remains safe, and this condition does not pose any additional risk to the public. Additionally, our defense in depth strategies are relied upon to take actions to protect the health and safety of the public.
"The licensee has notified the NRC Resident Inspector."
* * * RETRACTION ON 5/10/14 AT 2032 EDT FROM STEVE INGALLS TO DONG PARK * * *
"Engineering evaluation has determined that the door would still fulfill its safety function of maintaining the integrity of the Control Room Envelope while the door handle was broken. The Control Room Special Vent System Boundary remained operable with the door handle off, therefore, there was no loss of safety function.
"The licensee has notified the NRC Resident Inspector."
Notified R3DO (Riemer).
"At approximately 0600 CDT on April 7, 2014, Units 1 and 2 Control Room Special Vent System (CRSVS) Boundary was declared inoperable when a Control Room door handle fell off. Air could be felt flowing through the hole, causing an opening in the Control Room Envelope (CRE) Boundary. An opening reduces the protection of the Control Room Envelope provided to the operators in the event of a Design Basis Accident. The CRSVS Boundary was declared Inoperable, which required entry into Technical Specifications (TS) LCO 3.7.10. Condition B, one or more CRSVS trains inoperable, in MODES 1, 2, 3, or 4. Actions were immediately initiated to implement mitigating actions. A Work Request (WR) was initiated to repair the door, and work is in progress to restore the Control Room Boundary to an operable condition.
"This condition is reportable under 10CFR50.72(b)(3)(v)(C), Event or Condition that Could Have Prevented Fulfillment of a Safety Function.
"The plant remains safe, and this condition does not pose any additional risk to the public. Additionally, our defense in depth strategies are relied upon to take actions to protect the health and safety of the public.
"The licensee has notified the NRC Resident Inspector."
* * * RETRACTION ON 5/10/14 AT 2032 EDT FROM STEVE INGALLS TO DONG PARK * * *
"Engineering evaluation has determined that the door would still fulfill its safety function of maintaining the integrity of the Control Room Envelope while the door handle was broken. The Control Room Special Vent System Boundary remained operable with the door handle off, therefore, there was no loss of safety function.
"The licensee has notified the NRC Resident Inspector."
Notified R3DO (Riemer).
Power Reactor
Event Number: 50005
Facility: MONTICELLO
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: BRANDON CALLSTROM
HQ OPS Officer: STEVE SANDIN
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: BRANDON CALLSTROM
HQ OPS Officer: STEVE SANDIN
Notification Date: 04/07/2014
Notification Time: 16:12 [ET]
Event Date: 04/07/2014
Event Time: 15:00 [CDT]
Last Update Date: 04/07/2014
Notification Time: 16:12 [ET]
Event Date: 04/07/2014
Event Time: 15:00 [CDT]
Last Update Date: 04/07/2014
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):
PATTY PELKE (R3DO)
PATTY PELKE (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 89 | Power Operation | 89 | Power Operation |
REMOVAL OF RADIATION MONITORS FROM SERVICE FOR PLANNED MAINTENANCE
"Both Discharge Canal Radiation Monitor Sample Pumps will be removed from service to facilitate planned maintenance activities. This represents a loss of emergency assessment capability under NUREG-1022 Revision 3 since the Discharge Canal Radiation Monitors are used to assess NUE [Notification of Unusual Event] and Alert thresholds. The Sample Pumps are expected to be unavailable for approximately two hours. During this time, Chemistry will be obtaining samples every 2 hours. As a result of the sampling, reasonable assurance exists that rising radiation levels will be able to be detected and monitored in order to protect the health and safety of the public.
"The NRC Resident [Inspector] has been notified prior to removing the Radiation Monitors from service."
"Both Discharge Canal Radiation Monitor Sample Pumps will be removed from service to facilitate planned maintenance activities. This represents a loss of emergency assessment capability under NUREG-1022 Revision 3 since the Discharge Canal Radiation Monitors are used to assess NUE [Notification of Unusual Event] and Alert thresholds. The Sample Pumps are expected to be unavailable for approximately two hours. During this time, Chemistry will be obtaining samples every 2 hours. As a result of the sampling, reasonable assurance exists that rising radiation levels will be able to be detected and monitored in order to protect the health and safety of the public.
"The NRC Resident [Inspector] has been notified prior to removing the Radiation Monitors from service."