Event Notification Report for March 19, 2015
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
03/18/2015 - 03/19/2015
Power Reactor
Event Number: 50903
Facility: FERMI
Region: 3 State: MI
Unit: [2] [] []
RX Type: [2] GE-4
NRC Notified By: WARREN PAUL
HQ OPS Officer: VINCE KLCO
Region: 3 State: MI
Unit: [2] [] []
RX Type: [2] GE-4
NRC Notified By: WARREN PAUL
HQ OPS Officer: VINCE KLCO
Notification Date: 03/19/2015
Notification Time: 10:51 [ET]
Event Date: 03/19/2015
Event Time: 07:02 [EDT]
Last Update Date: 03/19/2015
Notification Time: 10:51 [ET]
Event Date: 03/19/2015
Event Time: 07:02 [EDT]
Last Update Date: 03/19/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
Person (Organization):
GREGORY ROACH (R3DO)
GREGORY ROACH (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | A/R | Y | 70 | Power Operation | 0 | Hot Shutdown |
AUTOMATIC REACTOR SCRAM DUE TO AN OSCILLATION POWER RANGE MONITOR UPSCALE ACTUATION
"At 0702 EDT on March 19, 2015, Fermi 2 received an automatic scram due to actuation of the Reactor Protection System (RPS) function of Oscillation Power Range Monitor (OPRM) Upscale. The plant had recently transitioned to Single Loop Operation after securing the 'A' Reactor Recirculation Pump due to loss of normal and emergency cooling water supply. The lowest reactor water level was 134 inches above top of active fuel. Reactor water level is being maintained in the normal band by the Feedwater and Control Rod Drive Systems. No Safety Relief Valves (SRV) actuated. Reactor pressure is being maintained via the Main Turbine Bypass Valves and Main Condenser. Reactor Pressure Vessel Level 3 isolation occurred. No additional safety system actuations occurred. All off-site power sources were available throughout the event. The plant is currently in Mode 3 and in a stable condition. Investigation into the cause of the event is ongoing.
"This event is being reported under the four hour Non-Emergency reporting criteria of 10CFR50.72(b)(2)(iv)(B). The NRC Resident Inspector has been notified."
"At 0702 EDT on March 19, 2015, Fermi 2 received an automatic scram due to actuation of the Reactor Protection System (RPS) function of Oscillation Power Range Monitor (OPRM) Upscale. The plant had recently transitioned to Single Loop Operation after securing the 'A' Reactor Recirculation Pump due to loss of normal and emergency cooling water supply. The lowest reactor water level was 134 inches above top of active fuel. Reactor water level is being maintained in the normal band by the Feedwater and Control Rod Drive Systems. No Safety Relief Valves (SRV) actuated. Reactor pressure is being maintained via the Main Turbine Bypass Valves and Main Condenser. Reactor Pressure Vessel Level 3 isolation occurred. No additional safety system actuations occurred. All off-site power sources were available throughout the event. The plant is currently in Mode 3 and in a stable condition. Investigation into the cause of the event is ongoing.
"This event is being reported under the four hour Non-Emergency reporting criteria of 10CFR50.72(b)(2)(iv)(B). The NRC Resident Inspector has been notified."
Power Reactor
Event Number: 50907
Facility: PALISADES
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] CE
NRC Notified By: BARB DOTSON
HQ OPS Officer: MARK ABRAMOVITZ
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] CE
NRC Notified By: BARB DOTSON
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 03/19/2015
Notification Time: 16:44 [ET]
Event Date: 03/19/2015
Event Time: 16:00 [EDT]
Last Update Date: 03/19/2015
Notification Time: 16:44 [ET]
Event Date: 03/19/2015
Event Time: 16:00 [EDT]
Last Update Date: 03/19/2015
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):
GREGORY ROACH (R3DO)
GREGORY ROACH (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 |
OFFSITE NOTIFICATION OF TRITIUM IN GROUND WATER
"On February 26, 2015, as a result of routine monitoring well sampling, Palisades Nuclear Plant identified tritium in temporary wells 7 and 8, located within the plant protected area. Tritium concentrations were less than the threshold value (20,000 pCi/L) for initiating voluntary communications in accordance with Nuclear Energy Institute Ground Water Protection Initiative. The station promptly isolated and rerouted the likely source. Subsequent sample concentrations from samples obtained on March 18, 2015, have resulted in concentrations of tritium less than the minimum detectable activity. The wells are currently used only for on-site sampling and not for drinking water. There is no threat to public health and safety.
"These results confirm that a leak from the pipe that runs from the turbine sump oil separator to the turbine building drain tank was the likely cause. The volume of the leak cannot be determined but is potentially greater than 100 gallons. Therefore, voluntary communications have been made to state and local stakeholders. The Licensee has notified the Michigan Department of Environmental Quality, Van Buren County Administrator, the Township Supervisors in Covert, Geneva, and South Haven Townships, as well as the City of South Haven Mayor and City Manager.
"The licensee has notified the NRC Resident Inspectors."
The tritium is suspected to be migrating through the steam generator tubes to the turbine building waste water.
"On February 26, 2015, as a result of routine monitoring well sampling, Palisades Nuclear Plant identified tritium in temporary wells 7 and 8, located within the plant protected area. Tritium concentrations were less than the threshold value (20,000 pCi/L) for initiating voluntary communications in accordance with Nuclear Energy Institute Ground Water Protection Initiative. The station promptly isolated and rerouted the likely source. Subsequent sample concentrations from samples obtained on March 18, 2015, have resulted in concentrations of tritium less than the minimum detectable activity. The wells are currently used only for on-site sampling and not for drinking water. There is no threat to public health and safety.
"These results confirm that a leak from the pipe that runs from the turbine sump oil separator to the turbine building drain tank was the likely cause. The volume of the leak cannot be determined but is potentially greater than 100 gallons. Therefore, voluntary communications have been made to state and local stakeholders. The Licensee has notified the Michigan Department of Environmental Quality, Van Buren County Administrator, the Township Supervisors in Covert, Geneva, and South Haven Townships, as well as the City of South Haven Mayor and City Manager.
"The licensee has notified the NRC Resident Inspectors."
The tritium is suspected to be migrating through the steam generator tubes to the turbine building waste water.
Non-Agreement State
Event Number: 53713
Rep Org: TILDEN MINING CO
Licensee: TILDEN MINING CO
Region: 3
City: ISHPEMING State: MI
County:
License #: 21-26748-01
Agreement: N
Docket:
NRC Notified By: LAWRENCE M GRAY
HQ OPS Officer: JEFF HERRERA
Licensee: TILDEN MINING CO
Region: 3
City: ISHPEMING State: MI
County:
License #: 21-26748-01
Agreement: N
Docket:
NRC Notified By: LAWRENCE M GRAY
HQ OPS Officer: JEFF HERRERA
Notification Date: 11/02/2018
Notification Time: 13:20 [ET]
Event Date: 03/19/2015
Event Time: 00:00 [EDT]
Last Update Date: 11/02/2018
Notification Time: 13:20 [ET]
Event Date: 03/19/2015
Event Time: 00:00 [EDT]
Last Update Date: 11/02/2018
Emergency Class: NON EMERGENCY
10 CFR Section:
30.50(b)(2) - SAFETY EQUIPMENT FAILURE
10 CFR Section:
30.50(b)(2) - SAFETY EQUIPMENT FAILURE
Person (Organization):
KARLA STOEDTER (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
KARLA STOEDTER (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
PROCESS GAUGE SHUTTER STUCK OPEN
"In the process of performing the inventory/shutter check it was reported on March 19, 2015 that our Kay Ray Model Number: 7050, Serial Number: 1405, 200 mCi, Cs-137 gauge located on 4B DTU (Deslime Thickener U/Flow) in the deslime basement had a broken handle on the shutter mechanism, rendering the shutter non-operable. Work order (1545064) was entered into Ellipse. It was determined that the area in which the gauge is located does not create an exposure hazard.
"The plant process requires the shutter to remain in the open position during normal operation and does not create a hazard to individuals, the course of action will be to remove and replace the gauge at the first opportunity. Once the gauge is removed, it will be placed and locked in the cage located in the warehouse. The gauge will be placed on top of the required amount of lead to remove any potential exposure hazard; surveys will be performed to confirm personnel safety."
"In the process of performing the inventory/shutter check it was reported on March 19, 2015 that our Kay Ray Model Number: 7050, Serial Number: 1405, 200 mCi, Cs-137 gauge located on 4B DTU (Deslime Thickener U/Flow) in the deslime basement had a broken handle on the shutter mechanism, rendering the shutter non-operable. Work order (1545064) was entered into Ellipse. It was determined that the area in which the gauge is located does not create an exposure hazard.
"The plant process requires the shutter to remain in the open position during normal operation and does not create a hazard to individuals, the course of action will be to remove and replace the gauge at the first opportunity. Once the gauge is removed, it will be placed and locked in the cage located in the warehouse. The gauge will be placed on top of the required amount of lead to remove any potential exposure hazard; surveys will be performed to confirm personnel safety."