Event Notification Report for August 28, 2005
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
08/27/2005 - 08/28/2005
Power Reactor
Event Number: 41955
Facility: HATCH
Region: 2 State: GA
Unit: [1] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: ED BURKETT
HQ OPS Officer: MIKE RIPLEY
Region: 2 State: GA
Unit: [1] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: ED BURKETT
HQ OPS Officer: MIKE RIPLEY
Notification Date: 08/28/2005
Notification Time: 04:50 [ET]
Event Date: 08/28/2005
Event Time: 02:25 [EDT]
Last Update Date: 08/28/2005
Notification Time: 04:50 [ET]
Event Date: 08/28/2005
Event Time: 02:25 [EDT]
Last Update Date: 08/28/2005
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):
DAVID AYRES (R2)
DAVID AYRES (R2)
| 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 | 98 | Power Operation | 98 | Power Operation |
FAILURE OF NOAA WEATHER SERVICE RADIO
"Failure of the NOAA Weather Service radio was reported by Plant Hatch Site Security after receipt of an alarm message in the Security Secondary Alarm Station. The NOAA Weather Service radio was out of service for greater than 15 minutes as of 0225. The NOAA Weather Service radio was out of service for 1 hour and 16 minutes, from 0209 to 0325 on August 28, 2005.
"The NOAA Weather Service radio has been restored to service by the Jacksonville Weather Service after repair's were done by their local telephone provider. As of 0325 the NOAH Weather Service radio is operable. Discussions with Jacksonville Weather Service indicate they do not know, at this time, what the problems were, or how they were resolved by their telephones service provider."
The licensee notified State and local agencies and the NRC Resident Inspector.
"Failure of the NOAA Weather Service radio was reported by Plant Hatch Site Security after receipt of an alarm message in the Security Secondary Alarm Station. The NOAA Weather Service radio was out of service for greater than 15 minutes as of 0225. The NOAA Weather Service radio was out of service for 1 hour and 16 minutes, from 0209 to 0325 on August 28, 2005.
"The NOAA Weather Service radio has been restored to service by the Jacksonville Weather Service after repair's were done by their local telephone provider. As of 0325 the NOAH Weather Service radio is operable. Discussions with Jacksonville Weather Service indicate they do not know, at this time, what the problems were, or how they were resolved by their telephones service provider."
The licensee notified State and local agencies and the NRC Resident Inspector.
Power Reactor
Event Number: 41956
Facility: HOPE CREEK
Region: 1 State: NJ
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: DARON ZAKARIAN
HQ OPS Officer: JOHN KNOKE
Region: 1 State: NJ
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: DARON ZAKARIAN
HQ OPS Officer: JOHN KNOKE
Notification Date: 08/28/2005
Notification Time: 11:04 [ET]
Event Date: 08/28/2005
Event Time: 11:00 [EDT]
Last Update Date: 08/28/2005
Notification Time: 11:04 [ET]
Event Date: 08/28/2005
Event Time: 11:00 [EDT]
Last Update Date: 08/28/2005
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(i) - PLANT S/D REQD BY TS 50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD
10 CFR Section:
50.72(b)(2)(i) - PLANT S/D REQD BY TS 50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD
Person (Organization):
WILLIAM COOK (R1)
WILLIAM COOK (R1)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
TECHNICAL SPECIFICATION REQUIRED SHUTDOWN DUE TO INOPERABLE SUPPRESSION CHAMBER VACUUM BREAKER
"At 0325 on 8/28/05 the `B' Drywell to Suppression Chamber vacuum breaker indication began cycling from closed to intermediate open. Attempts were made to close the vacuum breaker from the control room were not successful. Attempts to establish a differential pressure between the drywall and suppression chamber airspace were also not successful at getting the vacuum breaker to close and stay closed. Technical Specification 3.6.4.1 was entered at 0325 and a plant shutdown was initiated at 1100 to comply with Technical Specifications. With the vacuum breaker open or partially open, the pressure suppression function of the suppression chamber could be compromised in the event of a postulated loss of coolant accident and therefore this safety function is degraded. The inoperability of this vacuum breaker is reportable in accordance with 50.72(b)(3)(v), The cause of the open vacuum breaker is currently not known. The plant will be taken to cold shutdown to facilitate torus entry to effect repairs.
"There was no other equipment that was unavailable that contributed to this event. All other safety related equipment is currently operable."
The licensee is starting a normal shutdown.
The licensee notified the NRC Resident Inspector and will be notifying the LAC Township.
"At 0325 on 8/28/05 the `B' Drywell to Suppression Chamber vacuum breaker indication began cycling from closed to intermediate open. Attempts were made to close the vacuum breaker from the control room were not successful. Attempts to establish a differential pressure between the drywall and suppression chamber airspace were also not successful at getting the vacuum breaker to close and stay closed. Technical Specification 3.6.4.1 was entered at 0325 and a plant shutdown was initiated at 1100 to comply with Technical Specifications. With the vacuum breaker open or partially open, the pressure suppression function of the suppression chamber could be compromised in the event of a postulated loss of coolant accident and therefore this safety function is degraded. The inoperability of this vacuum breaker is reportable in accordance with 50.72(b)(3)(v), The cause of the open vacuum breaker is currently not known. The plant will be taken to cold shutdown to facilitate torus entry to effect repairs.
"There was no other equipment that was unavailable that contributed to this event. All other safety related equipment is currently operable."
The licensee is starting a normal shutdown.
The licensee notified the NRC Resident Inspector and will be notifying the LAC Township.