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Event Notification Report for May 10, 2010

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
05/07/2010 - 05/10/2010

** EVENT NUMBERS **


45884 45897

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Fuel Cycle Facility Event Number: 45884
Facility: WESTINGHOUSE ELECTRIC CORPORATION
RX Type: URANIUM FUEL FABRICATION
Comments: LEU CONVERSION (UF6 to UO2)
                   COMMERCIAL LWR FUEL
Region: 2
City: COLUMBIA State: SC
County: RICHLAND
License #: SNM-1107
Agreement: Y
Docket: 07001151
NRC Notified By: GERARD COUTURE
HQ OPS Officer: PETE SNYDER
Notification Date: 04/30/2010
Notification Time: 12:34 [ET]
Event Date: 04/29/2010
Event Time: 13:04 [EDT]
Last Update Date: 04/30/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
PART 70 APP A (b)(2) - LOSS OR DEGRADED SAFETY ITEMS
Person (Organization):
GERALD MCCOY (R2DO)
MARISSA BAILEY (NMSS)

Event Text

HOT OIL SYSTEM EMERGENCY SHUTDOWN FAILS ANNUAL PREVENTATIVE MAINTENANCE CHECK

"It was reported to EH&S Management that on April 29, 2010, the annual preventative maintenance functional check on the hot oil system emergency shutdown system failed. This function is an Item Relied On For Safety (IROFS) and is identified in the Integrated Safety Analysis (ISA) Summary for the conversion area of the Columbia Fuel Fabrication Facility. This IROFS designation is ADUHOS-407 and this IROFS is a control applied to a fire related sequence. Information pertaining to the accident sequence can be found in the January 2010, ISA Summary 03 page 78. There were no actual fire incidents; there were no hazardous materials or special nuclear materials released.

"Current plant status: This functional test requires the conversion lines and associated hot oil dryer be shut down. The conversion lines which utilize the hot oil system protected by this function were in normal shutdown at the time of the functional check was performed. The Columbia Fuel Fabrication Facility is currently shutdown for performance of the annual inventory and associated maintenance outage.

"This notification is made base on 10 CFR 70 Appendix A (b)(2) 'Loss or degradation of items relied on for safety that results in failure to meet the performance requirements of 10 CFR 70.61.' The performance requirements for this accident sequence require the Overall Likelihood Index (OLI) be a -4, which corresponds to Highly Unlikely. With this control failure the sequence OLI is -3 which corresponds to Unlikely.

"Corrective Actions: The corresponding conversion lines and associated hot oil dryer systems are currently in a normal shutdown mode, and will remain so until appropriated troubleshooting and repairs are conducted and the IROFS is restored to an operable status."

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General Information or Other Event Number: 45897
Rep Org: TEXAS DEPARTMENT OF HEALTH
Licensee: CHEVRON PHILLIPS CHEMICAL COMPANY LP
Region: 4
City: BORGER State: TX
County:
License #: 05181
Agreement: Y
Docket:
NRC Notified By: ART TUCKER
HQ OPS Officer: DONG HWA PARK
Notification Date: 05/04/2010
Notification Time: 09:43 [ET]
Event Date: 05/03/2010
Event Time: 15:55 [CDT]
Last Update Date: 05/04/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
THOMAS FARNHOLTZ (R4DO)
ANGELA MCINTOSH (FSME)

Event Text

AGREEMENT STATE REPORT - STUCK SHUTTER

The State of Texas provided this information via email:

"On May 3, 2010, the licensee discovered that the shutter of a nuclear gauge mounted on the Ryton Quench Salt Solution Tank was stuck in the 'Open' position. The gauge is an Ohmart-Vega Model SH-F1 serial #6966CN, with a 20 mCi Cesium (Cs)-137 source. Initial efforts were made to free the shutter mechanism with penetrating oil and hand pressure, with no results. The shutter mechanism has been tagged out and the manufacturer has been contacted. The gauge is stuck in the open position which is its normal operating position. The source does not present an increased exposure risk to personnel as there are no identified needs for entry/opening of the vessel which would require lockout of the gauge.

"The licensee is working with the manufacturer to arrange for a field service engineer to evaluate/repair/replace the stuck shutter. This shutter had previously failed in October 2009 (EN45399, I-8675.) Repairs had been made and a protective cover for the gauge was installed at that time."

Texas Incident Report # I-8737

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Thursday, March 29, 2012