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Event Notification Report for April 23, 2007

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
04/20/2007 - 04/23/2007

** EVENT NUMBERS **


43306 43307 43312

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General Information or Other Event Number: 43306
Rep Org: TENNESSEE DIV OF RAD HEALTH
Licensee: ENERGY SOLUTIONS
Region: 1
City: OAK RIDGE State: TN
County:
License #: R-73008
Agreement: Y
Docket:
NRC Notified By: DEBRA SHULTS
HQ OPS Officer: JOHN KNOKE
Notification Date: 04/17/2007
Notification Time: 12:28 [ET]
Event Date: 04/16/2007
Event Time: 11:45 [EDT]
Last Update Date: 04/17/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
THOMAS KOZAK (R3)
MARIE MILLER (R1)
GREG MORELL (FSME)

Event Text

AGREEMENT STATE REPORT - CONTAMINATED SHIPMENT EXCEEDING DOT REGULATIONS

The licensee provided the following information via facsimile:

"The Radiation Safety Officer at Energy Solutions waste processing facility [Duratek Radwaste Processing, Oak Ridge ,TN] called the State to report an incoming shipment [open bed trailer] containing 12 boxes [of Dry Active Waste - 323 millicuries] from Dairyland Power Cooperative in Genoa, Wisconsin was surveyed for receipt and found to have greater than 200 Mr/hr on one box. The dose rate exceeded the DOT regulations referenced in 49 CFR 173.441. NRC regions 1 and 3 were notified on 4/16/07."

In further discussions with Dairyland Power Cooperative it was stated that when the shipment left La Cross power plant facility the survey of the boxes was within DOT shipping regulations. During transport the Dry Active Waste most likely settled to the bottom of the box which accounted for the elevated radiation levels. Dairyland Power Cooperative stated the state of TN would be contacting the state of WI about this incident.

TN Report ID Number: TN-07-074

*** UPDATE FROM STATE OF TN (SHULTS) TO KNOKE AT 1600 EDT ON 04/17/07 ***

Spoke to state of TN and they indicated they were not contacting the state of WI since Dairyland Power Cooperative was a NRC licensee.

Notified FSME (Morell) and R1DO (Miller) and R3DO (Kozak).

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General Information or Other Event Number: 43307
Rep Org: TEXAS DEPARTMENT OF HEALTH
Licensee: CARDINAL HEALTH 200 INC.
Region: 4
City: EL PASO State: TX
County:
License #: 02407
Agreement: Y
Docket:
NRC Notified By: LATISCHA HANSON
HQ OPS Officer: JASON KOZAL
Notification Date: 04/18/2007
Notification Time: 13:05 [ET]
Event Date: 03/12/2007
Event Time: [CDT]
Last Update Date: 04/18/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
RUSSELL BYWATER (R4)
GREG MORELL (FSME)

Event Text

AGREEMENT STATE REPORT - IRRADIATOR WATER CONDUCTIVITY GREATER THAN LIMIT

"On March 13, 2007, the Agency was notified by the licensee that their source pool conductivity had exceeded 100 microsiemens per centimeter (uS/cm). The facility had completed a source replacement the week of February 21, 2007 and had regenerated their ion exchange resin on March 9, 2007. On March 11, 2007, the water conductivity was found to be 269.1 uS/cm. The licensee conducted an investigation and found that the system used to control the regeneration of their ion exchange resins, had failed to operate properly due to a power outage. The purification resins were replaced and the conductivity was reported to be 69.34 uS/cm on March 30, 2007 and 1 uS/cm on April 4, 2007. The licensee has upgraded the control system and is measuring conductivity twice a day to prevent a reoccurrence."

Texas report number - I - 8402

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Fuel Cycle Facility Event Number: 43312
Facility: PADUCAH GASEOUS DIFFUSION PLANT
RX Type: URANIUM ENRICHMENT FACILITY
Comments: 2 DEMOCRACY CENTER
                   6903 ROCKLEDGE DRIVE
                   BETHESDA, MD 20817 (301)564-3200
Region: 2
City: PADUCAH State: KY
County: McCRACKEN
License #: GDP-1
Agreement: Y
Docket: 0707001
NRC Notified By: WF CAGE
HQ OPS Officer: JASON KOZAL
Notification Date: 04/22/2007
Notification Time: 13:53 [ET]
Event Date: 04/22/2007
Event Time: 03:20 [CDT]
Last Update Date: 04/22/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
76.120(c)(2) - SAFETY EQUIPMENT FAILURE
Person (Organization):
JOEL MUNDAY (R2)
KEITH McCONNELL (FSME)

Event Text

UF6 RELEASE DETECTION SYSTEM INOPERABLE

"At 0320 CDST, on 4-22-07 the Plant Shift Superintendent (PSS) was notified that the control power for C-337A #1 Autoclave had been lost due to a blown control power fuse. Investigation of a problem with the Autoclave 1 West CV-510 valve close indicating light not functioning properly was in progress at the time the fuse blew. Maintenance personnel were performing non-intrusive checks of the valve's limit switch and had activated the limit switch operating plunger when the fuse blew. No maintenance work package was used for these checks. The power supply for the local autoclave area audible and visible alarms for the UF6 Release Detection System are fed from the #1 Autoclave control power. Due to this loss of control power, the UF6 Release Detection System was rendered inoperable. At the time of the incident, the C-337A facility was operating in an operational mode in which the UF6 Release Detection System was required to be operable, TSR 2.2.4.1 Mode 5. The C-337A Operations Monitoring Room where UF6 Release Detection System alarms would have been received was unoccupied at the time of the fuse failure due to C-337A personnel in the autoclave area assisting with the CV-510 light investigation. The system was declared inoperable and Limiting Conditions of Operation (LCO) required action, TSR 2.2.4.1 A.1, was put in place until power could be restored. Subsequent troubleshooting revealed the CV-510 limit switch was broken and has shorted the control circuit to ground when activated causing the fuse to blow. Power was restored and the UF6 Release Detection System was declared operable at 0539 on 4-22-07 following repairs and PMT.

"The event is reportable as a 24 hour event as required by 10 CFR 76.120(c)(2)(i); An event in which equipment is disabled or fails to function as designed when the equipment is required by TSR to be available and operable and no redundant equipment was available to perform the required safety function.

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

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Thursday, March 29, 2012