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Event Notification Report for July 26, 2004

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
07/23/2004 - 07/26/2004

** EVENT NUMBERS **


40883 40895 40897

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General Information or Other Event Number: 40883
Rep Org: TEXAS DEPARTMENT OF HEALTH
Licensee: APEX GEOSCIENCE, INC.
Region: 4
City: PLANO State: TX
County:
License #: L04929-004
Agreement: Y
Docket:
NRC Notified By: JAMES H. OGDEN
HQ OPS Officer: STEVE SANDIN
Notification Date: 07/20/2004
Notification Time: 13:13 [ET]
Event Date: 07/15/2004
Event Time: 07:30 [CDT]
Last Update Date: 07/20/2004
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
TOM FARNHOLTZ (R4)
THOMAS ESSIG (NMSS)
CNSNS (MEXICO) (FAX)

Event Text

AGREEMENT STATE REPORT INVOLVING A STOLEN TROXLER GAUGE

"Moisture density gauge believed to be stolen during a stop at Lowes, Plano, Texas, to pickup parts. The operator claims that the chain or lock was cut. The chain and lock were not left behind. The gauge is a Troxler Model 3440, Serial No. 33851 with two sealed sources: Cs-137, 8 millicuries, Serial No. 750-9505 and Am-241/Be, 40 millicuries, Serial No. 47-3391. Both sources were last leak tested June 1, 2004. Driver left Lowes and proceeded to a convenience store across the parking lot for a carton of cigarettes. Upon returning to the truck the gauge was noted as missing. The vehicle was a company truck: white, Ford Ranger, #51, with green logos on both sides.

"Media attention: None known. Licensee is contemplating offering a reward for return of the gauge."

The Plano Police Department was notified of this incident. Texas Incident No.: I-8144.

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Power Reactor Event Number: 40895
Facility: LIMERICK
Region: 1 State: PA
Unit: [ ] [2] [ ]
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: STAN GAMBLE
HQ OPS Officer: JOHN MacKINNON
Notification Date: 07/23/2004
Notification Time: 11:10 [ET]
Event Date: 05/26/2004
Event Time: 16:22 [EDT]
Last Update Date: 07/23/2004
Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
Person (Organization):
JOHN KINNEMAN (R1)

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

Event Text

60 DAY INVALID AUTOMATIC ACTUATION REPORT: CONTAINMENT ISOALTION VALVES IN MORE THAN ONE SYSTEM

"On May 26, 2004 at 16:22 hours and inadvertent primary containment isolation signal was initiated following restoration from a surveillance test on the 2A Reactor Enclosure ventilation exhaust duct radiation monitor. The isolation was due to a fuse failure that caused isolation signals on Group 6A, 6B, 6C, and 7A primary containment isolation valves (PCIVs). The Unit 2 reactor enclosure ventilation isolated. The 2A standby gas treatment system (SGTS) and 2A reactor enclosure recirculation system (RERS) trains initiated. The instrument gas compressor suction valve and the 2A instrument gas header supply valve closed. The containment nitrogen inerting valve and the 2A instrument gas header supply valve closed. The containment nitrogen inerting block valve closed. The containment atmospheric sample valves received an isolation signal but were in a closed position prior to the event. All system functioned as designed during the event.

"The laboratory analysis of the fuse determined that the most probable cause of the event was an age related degradation of the fuse that reduced its current carrying capacity. The fuse was operating under steady state conditions for approximately 30 seconds prior to the failure. A fuse replacement plan was in progress prior to the event due to prior age related failures of this type of fuse. The fuse replacement plan will be evaluated to ensure the current schedule is adequate.

"Component data:
Type: Fuse
Manufacturer: Bussmann
Model number: MIN-5"

The NRC Resident Inspector was notified of this event by the licensee.

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Power Reactor Event Number: 40897
Facility: SAN ONOFRE
Region: 4 State: CA
Unit: [1] [ ] [ ]
RX Type: [1] W-3-LP,[2] CE,[3] CE
NRC Notified By: CLAY WILLIAMS
HQ OPS Officer: ARLON COSTA
Notification Date: 07/24/2004
Notification Time: 18:20 [ET]
Event Date: 07/24/2004
Event Time: 10:00 [PDT]
Last Update Date: 07/24/2004
Emergency Class: NON EMERGENCY
10 CFR Section:
72.75(c )(1) - SPENT FUEL, HLW, RX GTCC DEFECT
Person (Organization):
TOM FARNHOLTZ (R4)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N N 0 Decommissioned 0 Decommissioned

Event Text

ADVANCED HORIZONTAL STORAGE MODULE BOLT FAILURE

"On July 24, 2004, at about 1000 PDT, SCE [Southern California Edison] personnel were tightening two seismic restraint bolts on Advanced Horizontal Storage Module (AHSM) Number 10 at the Unit 1 ISFSI [Independent Fuel Storage Installation] when one of the bolts failed. SCE had placed the storage canister into AHSM No. 10 on July 18, 2004 and was tightening the restraint as specified in the final safety analysis report, after the module had reached thermal equilibrium.

"SCE plans to replace the failed bolt with another bolt manufactured under the same Certificate of Compliance and will tighten the seismic restraints within the period allowed by the FSAR (one week from initial placement of the storage canister). SCE's evaluation of the failed bolt is ongoing.

"SCE has notified the NRC resident inspectors about this occurrence and will provide them with a copy of this report."

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Friday, March 30, 2012