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Event Notification Report for August 25, 2017

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
08/24/2017 - 08/25/2017

** EVENT NUMBERS **


52910 52918 52921

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Agreement State Event Number: 52910
Rep Org: SC DIV OF HEALTH & ENV CONTROL
Licensee: INTERNATIONAL PAPER
Region: 1
City: GEORGETOWN State: SC
County:
License #: 060
Agreement: Y
Docket:
NRC Notified By: LELAND CAVE
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 08/17/2017
Notification Time: 12:12 [ET]
Event Date: 08/16/2017
Event Time: 11:30 [EDT]
Last Update Date: 08/17/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
HAROLD GRAY (R1DO)
NMSS_EVENTS_NOTIFICA (EMAI)

Event Text

AGREEMENT STATE REPORT - FIXED GAUGE LOST SHUTTER

The following report was received via e-mail:

"The licensee called to notify the state that during their annual inventory review, they found that one of their Thermo Measure Tech 5192 fixed gauges had lost its shutter. Upon searching, the shutter was later found on the floor. The call to the state was made on August 17, 2017 at 1010 [EDT]. The Radiation Safety Officer stated that surveys were done and that the highest reading around the gauge was less than 0.5 mR/hr. He also stated that a consultant has been called to replace the shutter and to evaluate the damaged gauge and several other gauges throughout the plant. The licensee stated that a written report will be sent within 30 days of the event. Updates to this event will be made through the NMED system."

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Power Reactor Event Number: 52918
Facility: COLUMBIA GENERATING STATION
Region: 4 State: WA
Unit: [2] [ ] [ ]
RX Type: [2] GE-5
NRC Notified By: RICK KERRONE
HQ OPS Officer: DONALD NORWOOD
Notification Date: 08/20/2017
Notification Time: 22:46 [ET]
Event Date: 08/20/2017
Event Time: 16:05 [PDT]
Last Update Date: 08/24/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
THOMAS FARNHOLTZ (R4DO)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
2 M/R Y 100 Power Operation 0 Hot Shutdown

Event Text

MANUAL REACTOR SCRAM DUE TO A RISE IN MAIN CONDENSER BACK PRESSURE

"On August 20, 2017 at 1605 PDT, Columbia Generating Station was manually scrammed from 100 percent power due to a rise of Main Condenser back pressure. Manual scram of the unit is procedurally required upon a loss of Main Condenser back pressure. Preliminary investigations indicate that the Main Condenser air removal suction valve (AR-V-1) closed, resulting in the Condenser back pressure rising to within 1.0 inch Hg of the setpoint with reactor power greater than 25 percent. Further investigations continue. All control rods fully inserted.

"In addition to the closure of the air removal suction valve, one of two Reactor Feedwater startup flow control valves did not adequately operate to control Reactor vessel level and resulted in a high-level (Level-8) actuation tripping the Reactor Feedwater System. All other systems operated as expected. Reactor water level is currently being controlled manually with the start-up level control isolation valve. AR-V-1 has been manually opened with a jumper and temporary air supply. Reactor decay heat is being removed via bypass valves to the Main Condenser.

"This event is being reported under the following: 10 CFR 50.72(b)(2)(iv)(B), which requires a four-hour notification for any event or condition that results in actuation of the Reactor Protection System when the reactor is critical."

The licensee notified the NRC Resident Inspector.

The licensee plans to issue a press release.

* * * UPDATE ON 8/24/17 AT 1937 EDT FROM MATT HUMMER TO DONG PARK * * *

"The licensee is updating the notification to include an 8 hour notification under 10 CFR 50.72(b)(3)(iv)(A) for a specified system actuation due to a Level 3 isolation signal which occurred approximately 20 minutes after the scram. The licensee is currently in cold shutdown to repair the Reactor Feedwater startup flow control valve.

"The licensee has notified the NRC Resident Inspector."

Notified R4DO (Farnholtz).

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Power Reactor Event Number: 52921
Facility: GRAND GULF
Region: 4 State: MS
Unit: [1] [ ] [ ]
RX Type: [1] GE-6
NRC Notified By: LEROY PURDY
HQ OPS Officer: DONALD NORWOOD
Notification Date: 08/23/2017
Notification Time: 10:51 [ET]
Event Date: 08/23/2017
Event Time: 03:40 [CDT]
Last Update Date: 08/23/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
THOMAS FARNHOLTZ (R4DO)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 65 Power Operation 65 Power Operation

Event Text

LOSS OF OFFSITE TELEPHONE LINES

"At approximately 0340 CDT on Wednesday, August 23, 2017, Grand Gulf Nuclear Station was notified by the Entergy System Dispatcher that the NRC had called them and told them that the NRC could not contact Grand Gulf on the Emergency Notification System (ENS) line nor commercial telephone. Control Room personnel immediately tested several offsite lines including the NRC ENS line and found the lines were non-functional.

"Offsite prompt Public Warning Sirens were available at all times. State and Local notification capability was available via UHF radio communication. GGN Emergency Response Organization notification capability was available at all times via satellite phone activation of group paging. GGN site Emergency Response Facility intercommunications were available at all times via site internal telephones. In-plant and offsite team communications were available at all times via UHF radio.

"This event is being reported (8-hour notification) as an event or condition that adversely impacted offsite communications in accordance with 10 CFR 50.72(b)(3)(xiii), specifically the loss of the NRC Emergency Notification System (ENS).

"The phone company has been contacted and actions are being taken to restore normal communications capability at this time.

"The NRC Resident Inspector has been notified."

* * * UPDATE AT 1701 EDT ON 08/23/17 FROM LEROY PURDY TO JEFF HERRERA * * *

At 1701 EDT on 8/23/17 the phone systems at Grand Gulf have been restored. The licensee will be notifying the NRC Resident Inspector.

Notified the R4DO (Farnholtz)

Page Last Reviewed/Updated Friday, August 25, 2017
Friday, August 25, 2017