| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
10/21/2010 - 10/22/2010 ** EVENT NUMBERS ** |
 | General Information or Other | Event Number: 46343 | Rep Org: COLORADO DEPT OF HEALTH
Licensee: UTAH INSPECTION LLC
Region: 4
City: DE BEQUE State: CO
County:
License #: 1043-01
Agreement: Y
Docket:
NRC Notified By: PHILLIP PETERSON
HQ OPS Officer: JOE O'HARA | Notification Date: 10/19/2010
Notification Time: 13:07 [ET]
Event Date: 10/18/2010
Event Time: [MDT]
Last Update Date: 10/19/2010 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
VIVIAN CAMPBELL (R4DO)
MICHELE BURGESS (FSME)
| Event Text AGREEMENT STATE REPORT - STUCK SOURCE
The following report was received via fax:
"This memo is to serve as a preliminary report for an incident with a Colorado radiography licensee. Utah Inspection, LLC (Colorado license 1043-01) reported to the [Colorado Department of Health (CDH)] on October 18, 2010 a stuck source/source disconnect for a radiography source. The job site was at a gas compressor station in De Beque, Colorado. Initial reports indicate the source was approximately 60 Ci of Ir-I92.
"Utah Inspection contacted the CDH at approximately 2:30 pm on October 18,2010 to report the incident. The licensee reported that while performing a radiography shot, the camera slipped off a wet pipe and landed on the guide tube causing a crimp in the tube which prevented the source from being retracted. The licensee extended the boundaries around the source and maintained surveillance of the source. The licensee contracted with a local Radiation Safety Officer trained in source retrieval activities and was able to retract the source to the shielded position at approximately 7:15 pm on October 18, 2010.
"A member of the CDH responded to the incident scene as the retraction efforts were being completed. The RSO contracted for the source retrieval reported an estimated 138 mrem whole body, and the radiographer estimated doses at 50 mrem whole body for himself and 25 mrem whole body for his assistant. Individual overexposure does not appear to be an issue at this point for this incident. The individual from the CDH confirmed that the area was very isolated and the radiographer and assistant were able to maintain their distance from the source."
Colorado Incident I10-13. |
| General Information or Other | Event Number: 46344 | Rep Org: ARIZONA RADIATION REGULATORY AGENCY
Licensee: QUALITY TESTING LLC
Region: 4
City: GILBERT State: AZ
County:
License #: 07-491
Agreement: Y
Docket:
NRC Notified By: AUBREY GODWIN
HQ OPS Officer: ERIC SIMPSON | Notification Date: 10/19/2010
Notification Time: 16:00 [ET]
Event Date: 10/15/2010
Event Time: 08:00 [MST]
Last Update Date: 10/19/2010 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
VIVIAN CAMPBELL (R4DO)
KEITH McCONNELL (FSME)
ILTAB VIA EMAIL ()
MEXICO VIA FAX ()
|
| This material event contains a "Less than Cat 3" level of radioactive material. | Event Text AGREEMENT STATE REPORT - LOST MOISTURE DENSITY GAUGE
The following information was received from the Arizona Radiation Regulatory Agency via email:
"Date and Time Agency Notified: 8:00 AM, 10/15/2010.
"Type of Incident: Missing Radioactive Material.
"Device Manufacturer, Model No. and Serial No.: Humbolt 5001C, SN 1143.
"Sources and Activity: Cs-137, 10mCi; Am-241:Be, 40mCi.
"Date last seen or used: 12/03/2007.
"Circumstances: The missing gauge was in need of servicing or replacement therefore it was removed from service. The program that generated the inventory list for all equipment, omits the equipment removed from service. The licensee discovered this part of the program on 10/14/2010.
"Conclusion: The gauge could have been removed from licensee control any time after 12/03/2007.
"The Agency continues to investigate the actions of the licensee and timeliness of reporting the missing device.
"The U.S. NRC and the Arizona Governor's office have been notified of this event.
"Press coverage is anticipated."
THIS MATERIAL EVENT CONTAINS A "LESS THAN CAT 3" LEVEL OF RADIOACTIVE MATERIAL
Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf |
| !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 46346 | Facility: SAN ONOFRE
Region: 4 State: CA
Unit: [ ] [ ] [3]
RX Type: [1] W-3-LP,[2] CE,[3] CE
NRC Notified By: MIKE WONG
HQ OPS Officer: JOE O'HARA | Notification Date: 10/19/2010
Notification Time: 20:09 [ET]
Event Date: 10/19/2010
Event Time: 15:15 [PDT]
Last Update Date: 10/21/2010 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
| Person (Organization):
VIVIAN CAMPBELL (R4DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 3 | N | N | 0 | Cold Shutdown | 0 | Cold Shutdown | Event Text VALID SPECIFIED SYSTEM ACTUATION
"On October 19, 2010, at about 1515 PDT, SONGS Unit 3 RPS channels 'B' and 'D' were tested for maintenance. During this testing, both channels were powered off, which brought in LPD/DNBR [local power density/departure from nucleate boiling] trips on both channels. There are no applicable Technical Specifications required for these RPS channels in Mode 5.
"Southern California Edison(SCE) is reporting this occurrence as a valid actuation of RPS in accordance with 10 CFR 50.72(b)(3)(iv)(a).
"SCE has taken actions to restore both channels 'B' and 'D' of RPS and cleared the RPS trip signal. At the time of this occurrence, Unit 2 was at approximately 100% power and Unit 3 was in a Steam Generator Replacement Outage, Mode 5, shutdown and cooldown with the RCS open, proceeding to Mode 6."
The NRC Resident Inspector has been notified.
* * * RETRACTION FROM DENNIS MORRIS TO PETE SNYDER AT 0045 EDT ON 10/21/10 * * *
"On October 19, 2010, SCE reported (Event No. 46346) a valid actuation of the Reactor Protection System (RPS) in accordance with 10 CFR 50.72(b)(3)(iv)(A). Upon further review, SCE determined the actuation was invalid and is retracting the notification.
"Maintenance and surveillance testing was being conducted by Computer Technicians on the Core Protection Calculator [CPC] Channels 'A' and 'D', respectively, following station procedures. De-energizing the CPC channels was expected to bring in an RPS trip signal. The process to disable the control room RPS alarms had not as yet, been completed by the Instrument and Controls group when the CPCs were de-energized by procedure, actuating the RPS logic and causing the control room alarms.
"The actuation is considered invalid, as the equipment that would have been actuated by the trip safety function was previously de-energized and removed from service for the refueling outage. The Unit 3 reactor was in Mode 5, with the reactor trip breakers open, and control rods inserted. Unit 2 reactor remains at 100% power."
The licensee notified the NRC Resident Inspector. Notified R4DO (V.Campbell). | |