Event Notification Report for November 15, 2010
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/14/2010 - 11/15/2010
Power Reactor
Event Number: 46419
Facility: TURKEY POINT
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] W-3-LP,[4] W-3-LP
NRC Notified By: MIKE HOUGH
HQ OPS Officer: HOWIE CROUCH
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] W-3-LP,[4] W-3-LP
NRC Notified By: MIKE HOUGH
HQ OPS Officer: HOWIE CROUCH
Notification Date: 11/15/2010
Notification Time: 07:06 [ET]
Event Date: 11/15/2010
Event Time: 06:03 [EST]
Last Update Date: 11/15/2010
Notification Time: 07:06 [ET]
Event Date: 11/15/2010
Event Time: 06:03 [EST]
Last Update Date: 11/15/2010
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):
ALAN BLAMEY (R2DO)
ALAN BLAMEY (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 3 | M/R | Y | 100 | Power Operation | 0 | Hot Standby |
MANUAL REACTOR TRIP DUE TO LOSS OF A CIRCULATING WATER PUMP WITH ANOTHER PUMP OUT OF SERVICE FOR MAINTENANCE
"On 11/15/10 at 0603 [hrs. EST], the Unit 3 reactor was manually tripped after receiving a report that there was an overheating packing gland on the 3A2 Circulating Water Pump. The 3A1 Circulating Water Pump was already tagged out for maintenance. This required Unit 3 to be tripped due to only two Circulating Water Pumps in operation. The Unit 3 reactor was stabilized in Mode 3. Auxiliary Feedwater automatically actuated. A train of normal feedwater remains available to feed Steam Generators.
"During the Unit 3 reactor trip, the 3B Steam Dump to Atmosphere failed to close on operator demand per procedure. It was locally isolated with a manual isolation valve stopping the cooldown. The RCS was stabilized at 487.56?F and was borated as required by procedure. All boration systems operated as designed. The RCS returned to normal operating temperature and pressure."
During the trip, all rods inserted into the core. Other than the steam dump to atmosphere valve lifting, no other relief valves lifted. There is no known primary to secondary leakage. The electrical grid is normal and the plant is in a normal shutdown electrical line-up. Decay heat is being removed via the 3A and 3C steam dumps to atmosphere since the Main Steam Isolation Valves were closed. The plant is heating up to normal operating temperature at which time auxiliary feedwater will be secured.
The licensee has notified the NRC Resident Inspector.
"On 11/15/10 at 0603 [hrs. EST], the Unit 3 reactor was manually tripped after receiving a report that there was an overheating packing gland on the 3A2 Circulating Water Pump. The 3A1 Circulating Water Pump was already tagged out for maintenance. This required Unit 3 to be tripped due to only two Circulating Water Pumps in operation. The Unit 3 reactor was stabilized in Mode 3. Auxiliary Feedwater automatically actuated. A train of normal feedwater remains available to feed Steam Generators.
"During the Unit 3 reactor trip, the 3B Steam Dump to Atmosphere failed to close on operator demand per procedure. It was locally isolated with a manual isolation valve stopping the cooldown. The RCS was stabilized at 487.56?F and was borated as required by procedure. All boration systems operated as designed. The RCS returned to normal operating temperature and pressure."
During the trip, all rods inserted into the core. Other than the steam dump to atmosphere valve lifting, no other relief valves lifted. There is no known primary to secondary leakage. The electrical grid is normal and the plant is in a normal shutdown electrical line-up. Decay heat is being removed via the 3A and 3C steam dumps to atmosphere since the Main Steam Isolation Valves were closed. The plant is heating up to normal operating temperature at which time auxiliary feedwater will be secured.
The licensee has notified the NRC Resident Inspector.
General Information or Other
Event Number: 46420
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: WAYNE GILSDORF
HQ OPS Officer: MARK ABRAMOVITZ
Licensee: OMAHA PUBLIC POWER DISTRICT
Region: 4
City: OMAHA State: NE
County:
License #: 01-39-04
Agreement: Y
Docket:
NRC Notified By: WAYNE GILSDORF
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 11/15/2010
Notification Time: 18:37 [ET]
Event Date: 11/15/2010
Event Time: 11:30 [CST]
Last Update Date: 11/15/2010
Notification Time: 18:37 [ET]
Event Date: 11/15/2010
Event Time: 11:30 [CST]
Last Update Date: 11/15/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
GREG PICK (R4DO)
PAUL MICHALAK (FSME)
GREG PICK (R4DO)
PAUL MICHALAK (FSME)
AGREEMENT STATE REPORT - FLY ASH DENSITY GAUGE SHUTTER FAILS OPEN
The following report was received via fax:
"The licensee uses fixed industrial gauges for measuring densities in fly ash hoppers at the Stations precipitator building. The industrial fixed gauges contain a Cesium 137 sealed source. The Cesium 137 sources were originally installed in April 1984 and at the time contained 50 milliCuries per source. The sources were manufactured and installed by Kay Ray, Inc. The gauge is Model No. 7080 and housing serial number 16785-G. The source capsule manufacturer was Amersham model no. CDC 800 and K-R ref. number serial number 15485 V. The Authorized User was performing the semi-annual 'Shutter Function Test' on Unit #3's precipitator sources. The 'external' source closure mechanism for the 3FA-1B & 2B hoppers did not operate as designed and the shutter did not close when the handle on the floor was operated. The external closure cable had detached from the shutter arms. In this condition, when the shutter closure mechanism was moved, the cable that operates the source shutter mechanism 20 feet above the floor did not move the shutter to the closed position. It should be noted that this cable is an older one which has been slated for replacement. This event happened at 11:30 am. The event was reported to the Lab Supervisor and the Radiation Safety Officer (RSO) at the Ft. Calhoun Power Station was notified. No personnel were exposed to radiation during this event."
The following report was received via fax:
"The licensee uses fixed industrial gauges for measuring densities in fly ash hoppers at the Stations precipitator building. The industrial fixed gauges contain a Cesium 137 sealed source. The Cesium 137 sources were originally installed in April 1984 and at the time contained 50 milliCuries per source. The sources were manufactured and installed by Kay Ray, Inc. The gauge is Model No. 7080 and housing serial number 16785-G. The source capsule manufacturer was Amersham model no. CDC 800 and K-R ref. number serial number 15485 V. The Authorized User was performing the semi-annual 'Shutter Function Test' on Unit #3's precipitator sources. The 'external' source closure mechanism for the 3FA-1B & 2B hoppers did not operate as designed and the shutter did not close when the handle on the floor was operated. The external closure cable had detached from the shutter arms. In this condition, when the shutter closure mechanism was moved, the cable that operates the source shutter mechanism 20 feet above the floor did not move the shutter to the closed position. It should be noted that this cable is an older one which has been slated for replacement. This event happened at 11:30 am. The event was reported to the Lab Supervisor and the Radiation Safety Officer (RSO) at the Ft. Calhoun Power Station was notified. No personnel were exposed to radiation during this event."