Event Notification Report for February 20, 2017
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
02/19/2017 - 02/20/2017
Power Reactor
Event Number: 52568
Facility: RIVER BEND
Region: 4 State: LA
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: STEVEN CARTER
HQ OPS Officer: DONALD NORWOOD
Region: 4 State: LA
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: STEVEN CARTER
HQ OPS Officer: DONALD NORWOOD
Notification Date: 02/20/2017
Notification Time: 17:24 [ET]
Event Date: 02/20/2017
Event Time: 12:40 [CST]
Last Update Date: 02/22/2017
Notification Time: 17:24 [ET]
Event Date: 02/20/2017
Event Time: 12:40 [CST]
Last Update Date: 02/22/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
Person (Organization):
HEATHER GEPFORD (R4DO)
HEATHER GEPFORD (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Refueling | 0 | Refueling |
UNANALYZED CONDITION DUE TO POTENTIAL FAILURE OF CONTROL ROOM AND CONTROL BUILDING AIR HANDLING UNITS
"During the investigation associated with Event Notification 52566 that was reported on 2/18/17, it has been determined that an unanalyzed condition (new potential single failure concerns) exists. This condition exists only during periods of manually alternating divisions of Control Building Chilled Water systems; in that potential failures of Control Room Air Handling Units (HVC-ACU1A or B) or Control Building Air Handling Units (HVC-ACU2A or B) could fail in a manner that challenges the operability of the alternate division.
"As reported in Event Notification 52566, the impact of this event was a loss of safety function cooling to both Division 1 and 2 AC/DC power distribution systems and Divisions 1 and 2 Control Room Fresh Air systems.
"Contingency actions are in development to address the impact of the potential failure mode. The plant remains in a planned refueling outage, Mode 5 with water level greater than 23' above the vessel flange. Shutdown cooling remains in service and is not affected by this issue. Investigation is ongoing.
"The NRC Resident Inspector has been briefed on this issue."
* * * UPDATE FROM ROB MELTON TO DONALD NORWOOD AT 2129 EST ON 2/20/2017 * * *
The licensee updated information in the first paragraph of the original above with the following:
"During the investigation associated with Event Notification 52566 that was reported on 2/18/17, it has been determined that an unanalyzed condition (new potential single failure concerns) exists. During periods of alternating divisions of Control Building Chilled Water systems, the potential exists for failures of Control Room Air Handling Units (HVC-ACU1A or B) or Control Building Air Handling Units (HVC-ACU2A or B) that could challenge the operability of the alternate division."
The licensee notified the NRC Resident Inspector of this update.
Notified R4DO (Gepford)
* * * UPDATE FROM STEVEN CARTER TO MARK ABRAMOVITZ AT 1513 EDT ON 2/22/17 * * *
"After further investigation it has been determined that an unanalyzed condition (new single failure concerns) exists with the dampers associated with the Control Room Fresh Air system. The potential exists for damper failures for HVC-FN1A Control Room Booster Fan 1A motor and HVC-FN1B Control Room Booster Fan 1B motor that could challenge the operability of the alternate division.
"Contingency actions are in development to address the impact of the potential failure mode. The plant remains in a planned refueling outage, Mode 5, with water level greater than 23 feet above the vessel flange. Shutdown cooling remains in service and is not affected by this issue. Investigation is ongoing.
"The NRC Resident Inspector has been briefed on this issue."
Notified R4DO (Pick).
"During the investigation associated with Event Notification 52566 that was reported on 2/18/17, it has been determined that an unanalyzed condition (new potential single failure concerns) exists. This condition exists only during periods of manually alternating divisions of Control Building Chilled Water systems; in that potential failures of Control Room Air Handling Units (HVC-ACU1A or B) or Control Building Air Handling Units (HVC-ACU2A or B) could fail in a manner that challenges the operability of the alternate division.
"As reported in Event Notification 52566, the impact of this event was a loss of safety function cooling to both Division 1 and 2 AC/DC power distribution systems and Divisions 1 and 2 Control Room Fresh Air systems.
"Contingency actions are in development to address the impact of the potential failure mode. The plant remains in a planned refueling outage, Mode 5 with water level greater than 23' above the vessel flange. Shutdown cooling remains in service and is not affected by this issue. Investigation is ongoing.
"The NRC Resident Inspector has been briefed on this issue."
* * * UPDATE FROM ROB MELTON TO DONALD NORWOOD AT 2129 EST ON 2/20/2017 * * *
The licensee updated information in the first paragraph of the original above with the following:
"During the investigation associated with Event Notification 52566 that was reported on 2/18/17, it has been determined that an unanalyzed condition (new potential single failure concerns) exists. During periods of alternating divisions of Control Building Chilled Water systems, the potential exists for failures of Control Room Air Handling Units (HVC-ACU1A or B) or Control Building Air Handling Units (HVC-ACU2A or B) that could challenge the operability of the alternate division."
The licensee notified the NRC Resident Inspector of this update.
Notified R4DO (Gepford)
* * * UPDATE FROM STEVEN CARTER TO MARK ABRAMOVITZ AT 1513 EDT ON 2/22/17 * * *
"After further investigation it has been determined that an unanalyzed condition (new single failure concerns) exists with the dampers associated with the Control Room Fresh Air system. The potential exists for damper failures for HVC-FN1A Control Room Booster Fan 1A motor and HVC-FN1B Control Room Booster Fan 1B motor that could challenge the operability of the alternate division.
"Contingency actions are in development to address the impact of the potential failure mode. The plant remains in a planned refueling outage, Mode 5, with water level greater than 23 feet above the vessel flange. Shutdown cooling remains in service and is not affected by this issue. Investigation is ongoing.
"The NRC Resident Inspector has been briefed on this issue."
Notified R4DO (Pick).
Agreement State
Event Number: 52569
Rep Org: TEXAS DEPT OF STATE HEALTH SERVICES
Licensee: DESERT NDT, LLC
Region: 4
City: ABILENE State: TX
County:
License #: NM IR362-3
Agreement: Y
Docket:
NRC Notified By: KAREN BLANCHARD
HQ OPS Officer: HOWIE CROUCH
Licensee: DESERT NDT, LLC
Region: 4
City: ABILENE State: TX
County:
License #: NM IR362-3
Agreement: Y
Docket:
NRC Notified By: KAREN BLANCHARD
HQ OPS Officer: HOWIE CROUCH
Notification Date: 02/21/2017
Notification Time: 16:44 [ET]
Event Date: 02/20/2017
Event Time: 00:00 [CST]
Last Update Date: 02/21/2017
Notification Time: 16:44 [ET]
Event Date: 02/20/2017
Event Time: 00:00 [CST]
Last Update Date: 02/21/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
GREG PICK (R4DO)
NMSS_EVENTS_NOTIFIC (EMAI)
GREG PICK (R4DO)
NMSS_EVENTS_NOTIFIC (EMAI)
AGREEMENT STATE REPORT - LOST THEN RECOVERED RADIOGRAPHY CAMERA
The following information was received via E-mail:
"On February 20, 2017, the licensee's radiation safety officer (RSO) notified the Agency [Texas Department of State Health Services] that one of its New Mexico radiography crews was performing radiographic operations on a pipeline that was being built in Reeves County, Texas. The crew finished work at one section and put the Spec 150 radiography device on the tailgate of their truck while they drove down the pipeline right-of-way to their next location. Unbeknownst to the radiographers, the device fell off the tailgate. The licensee and crew learned of the loss after a contractor found the device, picked it up, put it in the back of his pickup, and took it to another of the licensee's radiography crews who was also working on the pipeline. That crew called their site RSO who then called the crew who lost the camera.
"The camera was surveyed and readings were as expected. The source was in the fully shielded position and the safety plug was in the front of the camera. Based on calculations by the RSO on February 21, 2017, the contractor's exposure does not appear to have exceeded any regulatory limit.
"An investigation into this event is ongoing and further information will be provided as it is obtained in accordance with SA-300.
"The device was a Spec model 150, serial No.: 1778 containing a 60 Curie (current activity) Iridium-192 source, serial No.: YA0302."
Texas Incident No.: I-9466
The following information was received via E-mail:
"On February 20, 2017, the licensee's radiation safety officer (RSO) notified the Agency [Texas Department of State Health Services] that one of its New Mexico radiography crews was performing radiographic operations on a pipeline that was being built in Reeves County, Texas. The crew finished work at one section and put the Spec 150 radiography device on the tailgate of their truck while they drove down the pipeline right-of-way to their next location. Unbeknownst to the radiographers, the device fell off the tailgate. The licensee and crew learned of the loss after a contractor found the device, picked it up, put it in the back of his pickup, and took it to another of the licensee's radiography crews who was also working on the pipeline. That crew called their site RSO who then called the crew who lost the camera.
"The camera was surveyed and readings were as expected. The source was in the fully shielded position and the safety plug was in the front of the camera. Based on calculations by the RSO on February 21, 2017, the contractor's exposure does not appear to have exceeded any regulatory limit.
"An investigation into this event is ongoing and further information will be provided as it is obtained in accordance with SA-300.
"The device was a Spec model 150, serial No.: 1778 containing a 60 Curie (current activity) Iridium-192 source, serial No.: YA0302."
Texas Incident No.: I-9466