Event Notification Report for February 20, 2011
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
02/19/2011 - 02/20/2011
EVENT NUMBERS
4662846629466304663146632
Power Reactor
Event Number: 46628
Facility: PILGRIM
Region: 1 State: MA
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: DAVE NOYES
HQ OPS Officer: BILL HUFFMAN
Region: 1 State: MA
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: DAVE NOYES
HQ OPS Officer: BILL HUFFMAN
Notification Date: 02/20/2011
Notification Time: 00:55 [ET]
Event Date: 02/20/2011
Event Time: 00:00 [EST]
Last Update Date: 02/20/2011
Notification Time: 00:55 [ET]
Event Date: 02/20/2011
Event Time: 00:00 [EST]
Last Update Date: 02/20/2011
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(i) - PLANT S/D REQD BY TS
10 CFR Section:
50.72(b)(2)(i) - PLANT S/D REQD BY TS
Person (Organization):
MARC FERDAS (R1DO)
MARC FERDAS (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 60 | Power Operation |
TECHNICAL SPECIFICATION REQUIRED SHUTDOWN-REACTOR BUILDING CLOSED COOLING WATER TRAIN INOPERABLE
"At 0000 hours on Sunday, February 20, 2011, the Pilgrim Nuclear Power Station (PNPS) commenced a controlled shutdown of the reactor due to the 'B' train of Reactor Building Closed Cooling Water (RBCCW) being declared inoperable at 1250 hours on February 18, 2011 and expected to exceed its 72-hour Limiting Condition for Operability (LCO) as required by TS prior to return to operable status.
"With the plant operating at 100% power, leakage of Salt Service Water (SSW) was detected in the RBCCW system due to high chloride levels and increased inventory in the system. An investigation into the event determined that the source of the SSW was isolated to the 'B' RBCCW heat exchanger which is designed to cool RBCCW under normal and post-accident conditions. The quantity of the leakage was determined to exceed the design limits established to ensure post-accident operation of the system and the 'B' train of RBCCW was subsequently declared inoperable.
"The leak identification and repair activities are expected to exceed the TS LCO for the RBCCW system and therefore a controlled shutdown of the reactor was initiated.
"This event had no impact on the health and/or safety of the public.
"The licensee has notified the NRC Senior Resident Inspector.
"This 4-hour notification is being made in accordance with 10 CFR 50.72 (b)(2)(i)."
"At 0000 hours on Sunday, February 20, 2011, the Pilgrim Nuclear Power Station (PNPS) commenced a controlled shutdown of the reactor due to the 'B' train of Reactor Building Closed Cooling Water (RBCCW) being declared inoperable at 1250 hours on February 18, 2011 and expected to exceed its 72-hour Limiting Condition for Operability (LCO) as required by TS prior to return to operable status.
"With the plant operating at 100% power, leakage of Salt Service Water (SSW) was detected in the RBCCW system due to high chloride levels and increased inventory in the system. An investigation into the event determined that the source of the SSW was isolated to the 'B' RBCCW heat exchanger which is designed to cool RBCCW under normal and post-accident conditions. The quantity of the leakage was determined to exceed the design limits established to ensure post-accident operation of the system and the 'B' train of RBCCW was subsequently declared inoperable.
"The leak identification and repair activities are expected to exceed the TS LCO for the RBCCW system and therefore a controlled shutdown of the reactor was initiated.
"This event had no impact on the health and/or safety of the public.
"The licensee has notified the NRC Senior Resident Inspector.
"This 4-hour notification is being made in accordance with 10 CFR 50.72 (b)(2)(i)."
Power Reactor
Event Number: 46629
Facility: FITZPATRICK
Region: 1 State: NY
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: JOHN WALKOWIAK
HQ OPS Officer: BILL HUFFMAN
Region: 1 State: NY
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: JOHN WALKOWIAK
HQ OPS Officer: BILL HUFFMAN
Notification Date: 02/20/2011
Notification Time: 10:47 [ET]
Event Date: 02/20/2011
Event Time: 08:53 [EST]
Last Update Date: 02/20/2011
Notification Time: 10:47 [ET]
Event Date: 02/20/2011
Event Time: 08:53 [EST]
Last Update Date: 02/20/2011
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):
MARC FERDAS (R1DO)
MARC FERDAS (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 |
TONE ALERT RADIO EMERGENCY NOTIFICATION SYSTEM OUT OF SERVICE
The licensee has been notified by Oswego County Emergency Management that the Tone Alert Radio Emergency Notification System had been out of service since 0853 EST and is still out of service at this time.
The County Alert Sirens which also function as part of the Public Prompt Notification System remain operable.
Compensatory measures have been verified to be available should the Prompt Notification System be needed.
The licensee has notified the State and the NRC Resident Inspector.
* * * UPDATE FROM JOHN WALKOWIAK TO VINCE KLCO ON 2/20/2011 @ 1228 * * *
At 1129 [EST], Fitzpatrick was notified by Oswego County Emergency Management that the Tone Alert Radio Emergency Notification System was restored to service at 1124 [EST] on 2/20/2011.
The licensee notified the State and the NRC Resident Inspector.
Notified the R1DO (Ferdas).
The licensee has been notified by Oswego County Emergency Management that the Tone Alert Radio Emergency Notification System had been out of service since 0853 EST and is still out of service at this time.
The County Alert Sirens which also function as part of the Public Prompt Notification System remain operable.
Compensatory measures have been verified to be available should the Prompt Notification System be needed.
The licensee has notified the State and the NRC Resident Inspector.
* * * UPDATE FROM JOHN WALKOWIAK TO VINCE KLCO ON 2/20/2011 @ 1228 * * *
At 1129 [EST], Fitzpatrick was notified by Oswego County Emergency Management that the Tone Alert Radio Emergency Notification System was restored to service at 1124 [EST] on 2/20/2011.
The licensee notified the State and the NRC Resident Inspector.
Notified the R1DO (Ferdas).
Power Reactor
Event Number: 46630
Facility: NINE MILE POINT
Region: 1 State: NY
Unit: [1] [2] []
RX Type: [1] GE-2,[2] GE-5
NRC Notified By: DON SHEEHAN
HQ OPS Officer: DONG HWA PARK
Region: 1 State: NY
Unit: [1] [2] []
RX Type: [1] GE-2,[2] GE-5
NRC Notified By: DON SHEEHAN
HQ OPS Officer: DONG HWA PARK
Notification Date: 02/20/2011
Notification Time: 12:02 [ET]
Event Date: 02/20/2011
Event Time: 08:53 [EST]
Last Update Date: 02/20/2011
Notification Time: 12:02 [ET]
Event Date: 02/20/2011
Event Time: 08:53 [EST]
Last Update Date: 02/20/2011
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):
MARC FERDAS (R1DO)
MARC FERDAS (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 99 | Power Operation | 99 | Power Operation |
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
TONE ALERT RADIO EMERGENCY NOTIFICATION SYSTEM OUT OF SERVICE
"On Sunday, February 20, 2011, at 1007 EST, James A. Fitzpatrick (JAF) Nuclear Station Shift Manager (SM), John Walkowiak, notified Nine Mile Point [NMP], and NYS Warning Point, via the RECS Line, of a loss of the Tone Alert System for greater than one hour from the National Weather Service as of 0853 [EST]. Site Emergency Procedures define a loss of Tone Alert System for greater than one hour, as a significant loss of Emergency Communications (EPIP-EPP-30).
"This impacts the ability to readily notify a portion of the Emergency Planning Zone (EPZ) Population for the NMP and JAF Nuclear Power Plants. This failure meets NRC 8-Hour reporting criteria 10 CFR 50.72(b)(3)(xiii).
"The County Alert Sirens, which also function as part of the Public Prompt Notification System, remained operable.
"The loss of the Tone Alert System constitutes a significant loss of Emergency Off-Site Communications capability. Compensatory measures were verified to be available should the Prompt Notification System be needed. This consists of utilizing the hyper-reach system, which is a reverse 911 feature available from the county 911 center. Local law enforcement personnel are also available for 'Route Alerting' of the affected areas of the EPZ.
"As of 1124 hours on February 20, 2011, Nine Mile Point was notified by the Oswego County 911 Center that the Tone Alert System has been returned to service."
The licensee has notified the NRC Resident Inspector.
"On Sunday, February 20, 2011, at 1007 EST, James A. Fitzpatrick (JAF) Nuclear Station Shift Manager (SM), John Walkowiak, notified Nine Mile Point [NMP], and NYS Warning Point, via the RECS Line, of a loss of the Tone Alert System for greater than one hour from the National Weather Service as of 0853 [EST]. Site Emergency Procedures define a loss of Tone Alert System for greater than one hour, as a significant loss of Emergency Communications (EPIP-EPP-30).
"This impacts the ability to readily notify a portion of the Emergency Planning Zone (EPZ) Population for the NMP and JAF Nuclear Power Plants. This failure meets NRC 8-Hour reporting criteria 10 CFR 50.72(b)(3)(xiii).
"The County Alert Sirens, which also function as part of the Public Prompt Notification System, remained operable.
"The loss of the Tone Alert System constitutes a significant loss of Emergency Off-Site Communications capability. Compensatory measures were verified to be available should the Prompt Notification System be needed. This consists of utilizing the hyper-reach system, which is a reverse 911 feature available from the county 911 center. Local law enforcement personnel are also available for 'Route Alerting' of the affected areas of the EPZ.
"As of 1124 hours on February 20, 2011, Nine Mile Point was notified by the Oswego County 911 Center that the Tone Alert System has been returned to service."
The licensee has notified the NRC Resident Inspector.
Power Reactor
Event Number: 46631
Facility: PILGRIM
Region: 1 State: MA
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: DAVID NOYES
HQ OPS Officer: DONG HWA PARK
Region: 1 State: MA
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: DAVID NOYES
HQ OPS Officer: DONG HWA PARK
Notification Date: 02/20/2011
Notification Time: 17:47 [ET]
Event Date: 02/20/2011
Event Time: 10:34 [EST]
Last Update Date: 02/20/2011
Notification Time: 17:47 [ET]
Event Date: 02/20/2011
Event Time: 10:34 [EST]
Last Update Date: 02/20/2011
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
MARC FERDAS (R1DO)
MARC FERDAS (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | A | N | 0 | Hot Shutdown | 0 | Hot Shutdown |
REACTOR PROTECTION SYSTEM ACTUATION WHILE SHUTDOWN
"On Sunday, February 20, 2011, at 1034 EST with the reactor shutdown and all control rods fully inserted a valid Reactor Protection System (RPS) low reactor water initiation signal (+12 inch) was received. The RPS actuation signal resulted in reactor scram and actuation of the Primary Containment Isolation Systems for Group II - Primary Containment Isolation and Reactor Building Isolation System (RBIS), and Group VI - Reactor Water Cleanup System (RWCU). At the time of the event, a controlled reactor shutdown and cooldown was in progress. The Reactor Mode Selector Switch was in 'Startup' and a cooldown was being controlled using the Mechanical Hydraulic Control (MHC) System. Initial event review indicates that the turbine by-pass valve controlling the cooldown closed causing a 'shrink' on indicated reactor water level to briefly lower to +12 inches (lowest observed water level).
"Reactor water level was immediately restored, the isolations (Group II and VI) were reset, and the RPS signal was reset at 1135 EST. All systems operated as expected, in accordance with design.
"This event had no impact on the health and/or safety of the public.
"The US NRC Senior Resident Inspector was in the Main Control Room at the time of the event."
The licensee will be notifying the State.
"On Sunday, February 20, 2011, at 1034 EST with the reactor shutdown and all control rods fully inserted a valid Reactor Protection System (RPS) low reactor water initiation signal (+12 inch) was received. The RPS actuation signal resulted in reactor scram and actuation of the Primary Containment Isolation Systems for Group II - Primary Containment Isolation and Reactor Building Isolation System (RBIS), and Group VI - Reactor Water Cleanup System (RWCU). At the time of the event, a controlled reactor shutdown and cooldown was in progress. The Reactor Mode Selector Switch was in 'Startup' and a cooldown was being controlled using the Mechanical Hydraulic Control (MHC) System. Initial event review indicates that the turbine by-pass valve controlling the cooldown closed causing a 'shrink' on indicated reactor water level to briefly lower to +12 inches (lowest observed water level).
"Reactor water level was immediately restored, the isolations (Group II and VI) were reset, and the RPS signal was reset at 1135 EST. All systems operated as expected, in accordance with design.
"This event had no impact on the health and/or safety of the public.
"The US NRC Senior Resident Inspector was in the Main Control Room at the time of the event."
The licensee will be notifying the State.
Agreement State
Event Number: 46632
Rep Org: NE DIV OF RADIOACTIVE MATERIALS
Licensee: OMAHA PUBLIC POWER DISTRICT
Region: 4
City: OMAHA State: NE
County:
License #: 01-39-04
Agreement: Y
Docket:
NRC Notified By: JULIA SCHMITT
HQ OPS Officer: DONG HWA PARK
Licensee: OMAHA PUBLIC POWER DISTRICT
Region: 4
City: OMAHA State: NE
County:
License #: 01-39-04
Agreement: Y
Docket:
NRC Notified By: JULIA SCHMITT
HQ OPS Officer: DONG HWA PARK
Notification Date: 02/20/2011
Notification Time: 22:30 [ET]
Event Date: 02/20/2011
Event Time: 08:30 [CST]
Last Update Date: 02/20/2011
Notification Time: 22:30 [ET]
Event Date: 02/20/2011
Event Time: 08:30 [CST]
Last Update Date: 02/20/2011
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
VINCENT GADDY (R4DO)
DUNCAN WHITE (FSME)
VINCENT GADDY (R4DO)
DUNCAN WHITE (FSME)
AGREEMENT STATE REPORT - FLY ASH GAUGE SHUTTER FAILURE
The licensee uses industrial fixed gauges for measuring densities in fly ash hoppers. The industrial fixed gauges contain a 50 milliCurie Cesium 137 sealed source. The sources were manufactured and installed by Kay Ray, Inc. While the licensee was performing maintenance on the gauges, the remote source closure mechanism on 3 of the gauges did not operate as designed and the shutter did not close when operated by the handle on the floor. The chain that operates the source shutter mechanism 20 feet above the floor was disconnected which allowed the spring loaded shutter to close. No personnel were exposed to radiation during this event.
The licensee uses industrial fixed gauges for measuring densities in fly ash hoppers. The industrial fixed gauges contain a 50 milliCurie Cesium 137 sealed source. The sources were manufactured and installed by Kay Ray, Inc. While the licensee was performing maintenance on the gauges, the remote source closure mechanism on 3 of the gauges did not operate as designed and the shutter did not close when operated by the handle on the floor. The chain that operates the source shutter mechanism 20 feet above the floor was disconnected which allowed the spring loaded shutter to close. No personnel were exposed to radiation during this event.