Event Notification Report for August 23, 2015
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
08/22/2015 - 08/23/2015
Power Reactor
Event Number: 51339
Facility: SOUTH TEXAS
Region: 4 State: TX
Unit: [] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: JASON BERRIO
HQ OPS Officer: MARK ABRAMOVITZ
Region: 4 State: TX
Unit: [] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: JASON BERRIO
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 08/23/2015
Notification Time: 17:37 [ET]
Event Date: 08/23/2015
Event Time: 13:00 [CDT]
Last Update Date: 08/23/2015
Notification Time: 17:37 [ET]
Event Date: 08/23/2015
Event Time: 13:00 [CDT]
Last Update Date: 08/23/2015
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):
MICHAEL HAY (R4DO)
MICHAEL HAY (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
GRASS FIRE IN OWNER CONTROLLED AREA
"A fire was reported to the unit 2 control room at 1300 central time [CDT]. The fire was reported to be in the owner controlled area 3/4 of a mile west of the protected area and switchyard. The local fire department was dispatched to fight the fire. The fire burned approximately 1.5 acres. The fire was reported to be out at 1417 central time. No plant equipment was damaged and the operation of the plant was not affected. Region 12 (Houston) of the Texas Commission of Environmental Quality (TCEQ) was notified of the event at 1509 for visible emissions resulting from the grass fire. No further actions are required by the TCEQ at this time and no press release is planned."
The fire was caused by a downed 12.5 kV power line which powers outlying plant areas.
The licensee notified the NRC Resident Inspector.
"A fire was reported to the unit 2 control room at 1300 central time [CDT]. The fire was reported to be in the owner controlled area 3/4 of a mile west of the protected area and switchyard. The local fire department was dispatched to fight the fire. The fire burned approximately 1.5 acres. The fire was reported to be out at 1417 central time. No plant equipment was damaged and the operation of the plant was not affected. Region 12 (Houston) of the Texas Commission of Environmental Quality (TCEQ) was notified of the event at 1509 for visible emissions resulting from the grass fire. No further actions are required by the TCEQ at this time and no press release is planned."
The fire was caused by a downed 12.5 kV power line which powers outlying plant areas.
The licensee notified the NRC Resident Inspector.
Power Reactor
Event Number: 51480
Facility: FITZPATRICK
Region: 1 State: NY
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: BENJAMIN EGNEW
HQ OPS Officer: HOWIE CROUCH
Region: 1 State: NY
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: BENJAMIN EGNEW
HQ OPS Officer: HOWIE CROUCH
Notification Date: 10/19/2015
Notification Time: 08:19 [ET]
Event Date: 08/23/2015
Event Time: 12:42 [EDT]
Last Update Date: 10/19/2015
Notification Time: 08:19 [ET]
Event Date: 08/23/2015
Event Time: 12:42 [EDT]
Last Update Date: 10/19/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
Person (Organization):
MEL GRAY (R1DO)
MEL 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 |
60-DAY OPTIONAL TELEPHONIC NOTIFICATION OF INVALID PRIMARY CONTAINMENT ISOLATION SIGNAL
"On 8/23/2015 at 1242 [EDT], with the reactor at 100% power, an invalid RPS MG [Reactor Protection System Motor-Generator] set 'A' trip resulting in a loss of RPS bus 'A'; this occurred during testing of the RPS instrument channels. All equipment operated as designed as a result of the loss of power to the 'A' RPS bus. The invalid trip was determined to be a result of the overvoltage relay being set too low.
"The above event meets the reporting criteria of 10CFR50.73(a)(2)(iv)(A) since the loss of RPS bus resulted in primary containment isolation signals affecting containment valves in more than one system. The following systems isolated as a result of the loss of 'A' RPS bus: Reactor Water Cleanup, Reactor Building ventilation, 'A' Containment Atmosphere Dilution, Torus Vent and Purge, Drywell Equipment and Floor Drain Sumps, 'A' Drywell Containment Atmospheric Monitors, Recirculation System Sample Line, Main Steam Line Drains and Residual Heat Removal drain valve to radwaste. 'A' Standby Gas Treatment System started as designed. This notification is being made in accordance with 10CFR50.73(a)(2)(iv)(A) to provide information pertaining to an invalid 'A' Reactor Protection System actuation.
"Completed actions were the replacement of overvoltage relay and voltage setpoint change, completed on 9/11/2015.
"In accordance with 10CFR50.73(a)(i) a telephone notification is being made instead of submitting a written Licensee Event Report."
"On 8/23/2015 at 1242 [EDT], with the reactor at 100% power, an invalid RPS MG [Reactor Protection System Motor-Generator] set 'A' trip resulting in a loss of RPS bus 'A'; this occurred during testing of the RPS instrument channels. All equipment operated as designed as a result of the loss of power to the 'A' RPS bus. The invalid trip was determined to be a result of the overvoltage relay being set too low.
"The above event meets the reporting criteria of 10CFR50.73(a)(2)(iv)(A) since the loss of RPS bus resulted in primary containment isolation signals affecting containment valves in more than one system. The following systems isolated as a result of the loss of 'A' RPS bus: Reactor Water Cleanup, Reactor Building ventilation, 'A' Containment Atmosphere Dilution, Torus Vent and Purge, Drywell Equipment and Floor Drain Sumps, 'A' Drywell Containment Atmospheric Monitors, Recirculation System Sample Line, Main Steam Line Drains and Residual Heat Removal drain valve to radwaste. 'A' Standby Gas Treatment System started as designed. This notification is being made in accordance with 10CFR50.73(a)(2)(iv)(A) to provide information pertaining to an invalid 'A' Reactor Protection System actuation.
"Completed actions were the replacement of overvoltage relay and voltage setpoint change, completed on 9/11/2015.
"In accordance with 10CFR50.73(a)(i) a telephone notification is being made instead of submitting a written Licensee Event Report."