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Event Notification Report for March 29, 2010

U.S. Nuclear Regulatory Commission
Operations Center

EVENT REPORTS FOR
03/28/2010 - 03/29/2010

EVENT NUMBERS
4580245800

General Information or Other
Event Number: 45802
Rep Org: COLORADO DEPT OF HEALTH
Licensee: UNKNOWN
Region: 4
City:   State: CO
County:
License #:
Agreement: Y
Docket:
NRC Notified By: MARK DATER
HQ OPS Officer: DONALD NORWOOD
Notification Date: 03/29/2010
Notification Time: 18:07 [ET]
Event Date: 03/29/2010
Event Time: 00:00 [MDT]
Last Update Date: 03/29/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
Person (Organization):
NEIL OKEEFE (R4DO)
ANDREA KOCK (FSME)
Event Text
AGREEMENT STATE REPORT - FOUND PORTABLE DENSITY GAUGE

The following information was received from the State of Colorado via facsimile:

"On 3/29/10 this department was notified of a portable density gauge that had been left at a property that had been foreclosed on. We responded to the property and found a CPN MC-3 density gauge. The s/n M390304939. We have taken possession of the gauge and it is now being stored in a secure area. We have contacted the manufacturer who is attempting to track the serial number."

According to the NMED database, this gauge was reported stolen in 1999. The gauge contained 50 mCi of Am-241/Be and 10 mCi of Cs-137.

NMED Report #990562.


Fuel Cycle Facility
Event Number: 45800
Facility: PADUCAH GASEOUS DIFFUSION PLANT
Region: 2     State: KY
Unit: [] [] []
RX Type: URANIUM ENRICHMENT FACILITY
Comments: 2 DEMOCRACY CENTER
6903 ROCKLEDGE DRIVE
BETHESDA, MD 20817 (301)564-3200
NRC Notified By: DAVID PETTY
HQ OPS Officer: DONALD NORWOOD
Notification Date: 03/29/2010
Notification Time: 13:36 [ET]
Event Date: 03/29/2010
Event Time: 08:08 [CDT]
Last Update Date: 03/29/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
76.120(c)(2) - SAFETY EQUIPMENT FAILURE
Person (Organization):
EUGENE GUTHRIE (R2DO)
RAYMOND LORSON (NMSS)
Event Text
SAFETY EQUIPMENT FAILURE - PROCESS GAS DETECTION SYSTEM FOUND INOPERABLE

"At 0808 CDT on 03-29-10, the Plant Shift Superintendent (PSS) was notified that C-333 Unit 5 Cell 6 Process Gas Detection System (PGLD) was found with the READY light not illuminated when Operations were performing the manual test firing required by TSR surveillance requirement SR 2.4.4.1-1. This PGLD System contains detectors that cover Unit 5 cell 6 cell housing and Section 3 of the cell bypass piping. At the time the READY light was discovered not illuminated, these areas were operating above atmospheric pressure. The PGLD System was declared inoperable, TSR LCO 2.4.4.1.A.1 and 2.4.4.1.C.1 were entered and a continuous smoke watch was put in place within one hour. The power supply module was replaced and the system was satisfactorily tested. The system was declared operable at 1030 CDT on 03-29-10.

"TSR 2.4.4.1 requires that at least the minimum number of detector heads in the cell housing and in each defined section of the cell bypass are operable during steady state operations above atmospheric pressure. With the Unit 5 Cell 6 PGLD system inoperable, none of the required cell housing heads were operable. A PGLD head was manually actuated ('smoke tested') and the system would not alarm. Engineering has determined that the system would not have been able to perform its intended safety function.

"This event is reportable as a 24 hour event in accordance with 10CFR76.120(c)(2)(i).

"The NRC Senior Resident Inspector has been notified of this event."