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Event Notification Report for June 27, 2013

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
06/26/2013 - 06/27/2013

** EVENT NUMBERS **


49133 49148 49149 49150

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Agreement State Event Number: 49133
Rep Org: COLORADO DEPT OF HEALTH
Licensee: LIBERTYTOWN USA 2
Region: 4
City: MEADE State: CO
County:
License #: COLO. 1191-01
Agreement: Y
Docket:
NRC Notified By: MARK DATER
HQ OPS Officer: DONALD NORWOOD
Notification Date: 06/18/2013
Notification Time: 18:18 [ET]
Event Date: 06/18/2013
Event Time: [MDT]
Last Update Date: 06/18/2013
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
WAYNE WALKER (R4DO)
FSME EVENTS RESOURCE (EMAI)

Event Text

AGREEMENT STATE REPORT - SOURCE DISCONNECT EVENT

The following information was received via E-mail:

"On June 18, 2013, the Department [Colorado Department of Public Health and Environment] was notified by the Corporate RSO of Libertytown USA 2 (Colo. 1191-01), a radiography company, that they had experienced a source disconnect event earlier that day. The Corporate RSO reported that a crew had been performing radiographic operations in Meade, Colorado and the onsite radiographer was unable to retract the source following a shot. The radiographer secured the area and contacted the local Colorado RSO who responded to the site and took command of the situation. After consultation and assessment by phone with the Corporate RSO, the Colorado RSO was able to retract the source back into the exposure device. The camera was secured and taken out-of-service pending inspection, maintenance, or repair. The initial cause of the event is under investigation. The licensee is in the process of obtaining reports from personnel involved and will submit a final report to the Department within 30 days. The Corporate RSO reported an exposure of 3 mrem to the Colorado RSO and 10 mrem to the radiographer during the recovery operations. The site of the event was a remote location and no members of the public were exposed as a result of the source disconnect. The Department will investigate further, pending additional information from the licensee.

"Camera: Industrial Nuclear Company, Model: IR-100, Serial Number: 4138.

"Source: Industrial Nuclear Company, Model: 32, Serial Number: T994, Isotope: Iridium-192."

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Power Reactor Event Number: 49148
Facility: DIABLO CANYON
Region: 4 State: CA
Unit: [1] [ ] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: DARRELL JOHNSON
HQ OPS Officer: DONALD NORWOOD
Notification Date: 06/26/2013
Notification Time: 01:59 [ET]
Event Date: 06/25/2013
Event Time: 21:58 [PDT]
Last Update Date: 06/26/2013
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(i) - PLANT S/D REQD BY TS
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
GREG PICK (R4DO)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 95 Power Operation

Event Text

PLANT SHUTDOWN REQUIRED DUE TO RHR SYSTEM SOCKET WELD LEAK

"At 2158 PDT, plant personnel identified a through-wall leak in a Diablo Canyon Power Plant Unit 1 socket weld inside containment that provides a flow path to a relief valve that protects a common portion of both trains of the Residual heat Removal (RHR) system. The as-found condition did not comply with the requirements of equipment control guideline 7.6 and the ASME acceptance criteria. PG&E accordingly declared both Unit 1 trains of RHR inoperable and initiated plant shutdown at 2237 PDT in accordance with requirements of Technical Specification 3.0.3.

"PG&E will complete shutdown to Mode 4 and will perform repairs to restore compliance with ASME code requirements."

The licensee notified the NRC Resident Inspector.

* * * UPDATE AT 1303 EDT ON 6/26/13 FROM WESLEY FIANT TO PETE SNYDER * * *

"Pacific Gas and Electric Company is submitting an update based on a press release issued at 0915 PDT detailing the above information to local television, newspaper, and radio media outlets. San Luis Obispo County and State of California Offices of Emergency Services have already been notified."

The licensee notified the NRC Resident Inspector. Notified R4DO (Pick).

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Power Reactor Event Number: 49149
Facility: OCONEE
Region: 2 State: SC
Unit: [1] [ ] [ ]
RX Type: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP
NRC Notified By: BOB MEIXELL
HQ OPS Officer: PETE SNYDER
Notification Date: 06/26/2013
Notification Time: 18:33 [ET]
Event Date: 06/26/2013
Event Time: 10:40 [EDT]
Last Update Date: 06/26/2013
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD
50.72(b)(3)(v)(B) - POT RHR INOP
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
MARK FRANKE (R2DO)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation

Event Text

INADVERTENT CLOSURE OF OPPOSITE TRAIN VALVE RENDERS SAFETY TRAINS INOPERABLE

"At 1040 [EDT], on June 26, 2013, with the Unit 1B Low Pressure Injection (LPI) and Reactor Building Spray (RBS) trains inoperable for planned maintenance, a motor operated isolation valve (1LP-21) was inadvertently closed, rendering the 1A LPI and RBS trains inoperable. The intended action was to close 1LP-22 in the Unit 1B train. 1LP-21 was closed due to a human error. Unit 1 entered Tech Spec 3.0.3 for both trains of LPI and RBS being inoperable. At 1053, on June 26, 2013, the Unit 1A train of LPI and RBS were restored to operable by opening 1LP-21, and Tech Spec 3.0.3 was exited. Units 1, 2 and 3 were stable at 100% power during and after this event. No other safety or non-safety systems were degraded or lost as a result of this event. The event was determined to be reportable under 10 CFR 50.72(b)(3)(v) A, B, C and D "Event or Condition that Could Have Prevented Fulfillment of a Safety Function."

"Initial Safety Significance: None. There was no event on-going at the time of discovery that required the Unit 1 LPI and RBS systems to function, and the safety function was restored when the 1A LPI and RBS trains were restored to operability. Although declared inoperable, the Unit 1B LPI and RBS trains were available during the time 1LP-21 was closed.

"Corrective Actions: The Unit 1A LPI and RBS trains were restored to operable, an event investigation was commenced and the event was entered into the Oconee Corrective Action Program."

The licensee notified the NRC Resident Inspector.

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Power Reactor Event Number: 49150
Facility: HARRIS
Region: 2 State: NC
Unit: [1] [ ] [ ]
RX Type: [1] W-3-LP
NRC Notified By: GLEN LAWSON
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 06/27/2013
Notification Time: 04:46 [ET]
Event Date: 06/27/2013
Event Time: 04:25 [EDT]
Last Update Date: 06/27/2013
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
MARK FRANKE (R2DO)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation

Event Text

TECHNICAL SUPPORT CENTER VENTILATION PLANNED MAINTENANCE

"This is a non-emergency notification. Planned maintenance activities will be performed today which will temporarily affect Technical Support Center (TSC) ventilation. The maintenance will be completed in approximately 20 hours and is scheduled to be worked to minimize out-of-service time.

"In the event of an emergency, specific conditions may warrant relocating the TSC to the alternate facility per existing procedures. No other emergency response facilities are impacted by the maintenance. This event is reportable per 10CFR50.72(b)(3)(xiii) because the scheduled maintenance affects an emergency response facility."

The licensee notified the NRC Resident Inspector.

Page Last Reviewed/Updated Thursday, June 27, 2013
Thursday, June 27, 2013