Event Notification Report for November 12, 2015
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/11/2015 - 11/12/2015
EVENT NUMBERS
51532515335153451535
Power Reactor
Event Number: 51532
Facility: SUSQUEHANNA
Region: 1 State: PA
Unit: [1] [] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: LONNIE CRAWFORD
HQ OPS Officer: MARK ABRAMOVITZ
Region: 1 State: PA
Unit: [1] [] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: LONNIE CRAWFORD
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 11/12/2015
Notification Time: 15:15 [ET]
Event Date: 11/12/2015
Event Time: 11:32 [EST]
Last Update Date: 11/12/2015
Notification Time: 15:15 [ET]
Event Date: 11/12/2015
Event Time: 11:32 [EST]
Last Update Date: 11/12/2015
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
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
FRANK ARNER (R1DO)
FRANK ARNER (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | A/R | Y | 98 | Power Operation | 0 | Hot Shutdown |
AUTOMATIC REACTOR SCRAM
"At 1132 hours [EST] on November 12, 2015, Susquehanna Steam Electric Station Unit 1 reactor automatically scrammed due to one Main Steam Isolation Valve (MSIV) unanticipated closure causing a High Pressure RPS [Reactor Protection System] trip.
"All control rods inserted and both reactor recirculation pumps tripped due to reactor water level 2. Reactor water level lowered to -37 inches causing Level 3 (+13 inches) and level 2 (-38 inches) (Division 2 only) isolations. RCIC [Reactor Core Isolation Cooling] automatically initiated and was overridden by control room operators after RPV [Reactor Pressure Vessel] water level was restored to the normal band with feedwater. All isolations and initiations occurred as expected. No main steam relief valves opened. Pressure was controlled via main turbine bypass valve operation. All safety systems operated as expected.
"The Unit 1 reactor is currently stable in Mode 3. Investigation into the cause of the MSIV closure is underway.
"Unit 2 was unaffected and continues power operation.
"The NRC Resident Inspector has been notified. A voluntary notification to PEMA [Pennsylvania Emergency Management Agency] and press release will occur."
The plant is in its normal shutdown electrical lineup.
"At 1132 hours [EST] on November 12, 2015, Susquehanna Steam Electric Station Unit 1 reactor automatically scrammed due to one Main Steam Isolation Valve (MSIV) unanticipated closure causing a High Pressure RPS [Reactor Protection System] trip.
"All control rods inserted and both reactor recirculation pumps tripped due to reactor water level 2. Reactor water level lowered to -37 inches causing Level 3 (+13 inches) and level 2 (-38 inches) (Division 2 only) isolations. RCIC [Reactor Core Isolation Cooling] automatically initiated and was overridden by control room operators after RPV [Reactor Pressure Vessel] water level was restored to the normal band with feedwater. All isolations and initiations occurred as expected. No main steam relief valves opened. Pressure was controlled via main turbine bypass valve operation. All safety systems operated as expected.
"The Unit 1 reactor is currently stable in Mode 3. Investigation into the cause of the MSIV closure is underway.
"Unit 2 was unaffected and continues power operation.
"The NRC Resident Inspector has been notified. A voluntary notification to PEMA [Pennsylvania Emergency Management Agency] and press release will occur."
The plant is in its normal shutdown electrical lineup.
Power Reactor
Event Number: 51533
Facility: SUSQUEHANNA
Region: 1 State: PA
Unit: [] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: LONNIE CRAWFORD
HQ OPS Officer: MARK ABRAMOVITZ
Region: 1 State: PA
Unit: [] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: LONNIE CRAWFORD
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 11/12/2015
Notification Time: 17:47 [ET]
Event Date: 11/12/2015
Event Time: 11:32 [EST]
Last Update Date: 11/12/2015
Notification Time: 17:47 [ET]
Event Date: 11/12/2015
Event Time: 11:32 [EST]
Last Update Date: 11/12/2015
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):
FRANK ARNER (R1DO)
FRANK ARNER (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
SECONDARY CONTAINMENT INOPERABLE
"On November 12, 2015 at 1132 hrs. [EST], Secondary Containment became inoperable due to failure to meet SR 3.6.4.1.1 requirements on Unit 2.
"The inoperability was caused when RB [Reactor Building] Zone II differential pressure [D/P] oscillated between 0.23 and 0.43 inches WG [water gauge] (less than SR 3.6.4.1.1 requirement of greater than or equal to 0.25 inches WG). The oscillations subsided at 1501 [EST] and RB Zone II D/P continues to be maintained at approximately 0.35 inches WG.
"This event is being reported under 10 CFR 50.72(b)(3)(v)(c) and per the guidance of NUREG 1022 Rev 3 section 3.2.7 as a loss of a Safety Function. There is no redundant Susquehanna Secondary Containment system."
The licensee notified the NRC Resident Inspector.
"On November 12, 2015 at 1132 hrs. [EST], Secondary Containment became inoperable due to failure to meet SR 3.6.4.1.1 requirements on Unit 2.
"The inoperability was caused when RB [Reactor Building] Zone II differential pressure [D/P] oscillated between 0.23 and 0.43 inches WG [water gauge] (less than SR 3.6.4.1.1 requirement of greater than or equal to 0.25 inches WG). The oscillations subsided at 1501 [EST] and RB Zone II D/P continues to be maintained at approximately 0.35 inches WG.
"This event is being reported under 10 CFR 50.72(b)(3)(v)(c) and per the guidance of NUREG 1022 Rev 3 section 3.2.7 as a loss of a Safety Function. There is no redundant Susquehanna Secondary Containment system."
The licensee notified the NRC Resident Inspector.
Agreement State
Event Number: 51534
Rep Org: SC DIV OF HEALTH & ENV CONTROL
Licensee: SC DEPARTMENT OF TRANSPORTATION
Region: 1
City: SUMPTER State: SC
County:
License #: 119
Agreement: Y
Docket:
NRC Notified By: LELAND CAVE
HQ OPS Officer: MARK ABRAMOVITZ
Licensee: SC DEPARTMENT OF TRANSPORTATION
Region: 1
City: SUMPTER State: SC
County:
License #: 119
Agreement: Y
Docket:
NRC Notified By: LELAND CAVE
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 11/12/2015
Notification Time: 18:36 [ET]
Event Date: 11/12/2015
Event Time: 00:00 [EST]
Last Update Date: 11/12/2015
Notification Time: 18:36 [ET]
Event Date: 11/12/2015
Event Time: 00:00 [EST]
Last Update Date: 11/12/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
FRANK ARNER (R1DO)
NMSS_EVENTS_NOTIFICA (EMAI)
FRANK ARNER (R1DO)
NMSS_EVENTS_NOTIFICA (EMAI)
AGREEMENT STATE REPORT - DAMAGED MOISTURE DENSITY GAUGE
A Troxler moisture density gauge owned by the South Carolina Department of Transportation was run over and damaged. The Am-241 and Cs-137 sources were retracted at the time of the accident. Surveys by the Radiation Safety Officer were normal. The damaged gauge will be sent to the manufacturer for refurbishment or disposal.
Sources:
Am-241: 40 mCi
Cs-137: 8 mCi
A Troxler moisture density gauge owned by the South Carolina Department of Transportation was run over and damaged. The Am-241 and Cs-137 sources were retracted at the time of the accident. Surveys by the Radiation Safety Officer were normal. The damaged gauge will be sent to the manufacturer for refurbishment or disposal.
Sources:
Am-241: 40 mCi
Cs-137: 8 mCi
Power Reactor
Event Number: 51535
Facility: FERMI
Region: 3 State: MI
Unit: [2] [] []
RX Type: [2] GE-4
NRC Notified By: STEVE WARD
HQ OPS Officer: JEFF HERRERA
Region: 3 State: MI
Unit: [2] [] []
RX Type: [2] GE-4
NRC Notified By: STEVE WARD
HQ OPS Officer: JEFF HERRERA
Notification Date: 11/12/2015
Notification Time: 18:59 [ET]
Event Date: 11/12/2015
Event Time: 15:00 [EST]
Last Update Date: 11/12/2015
Notification Time: 18:59 [ET]
Event Date: 11/12/2015
Event Time: 15:00 [EST]
Last Update Date: 11/12/2015
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):
LAURA KOZAK (R3DO)
LAURA KOZAK (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | N | 0 | Refueling | 0 | Refueling |
PORTABLE CHEMICAL TOILET SPILL TO THE ENVIRONMENT
"On 11/12/2015 at approximately 1500 EST, a spill to the environment was determined to be reportable to the state environmental and local health agencies. A press release is planned.
"The spill occurred when a portable chemical toilet tipped over and was identified at approximately 1440 EST. The contents and exact quantity of the spill are unknown but the toilet has a capacity of 60 gallons. The spill contacted the ground but did not reach any waterways. Cleanup efforts are in progress.
"The NRC Senior Resident Inspector has been notified."
The licensee notified the Michigan Department of Environmental Quality.
"On 11/12/2015 at approximately 1500 EST, a spill to the environment was determined to be reportable to the state environmental and local health agencies. A press release is planned.
"The spill occurred when a portable chemical toilet tipped over and was identified at approximately 1440 EST. The contents and exact quantity of the spill are unknown but the toilet has a capacity of 60 gallons. The spill contacted the ground but did not reach any waterways. Cleanup efforts are in progress.
"The NRC Senior Resident Inspector has been notified."
The licensee notified the Michigan Department of Environmental Quality.