United States Nuclear Regulatory Commission - Protecting People and the Environment
Home > NRC Library > Document Collections > Reports Associated with Events > Event Notification Reports > 2007 > December 18

Event Notification Report for December 18, 2007

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
12/17/2007 - 12/18/2007

** EVENT NUMBERS **


43640 43839 43843 43847

To top of page
General Information or Other Event Number: 43640
Rep Org: MINNESOTA DEPARTMENT OF HEALTH
Licensee: ASSET MANAGEMENT
Region: 3
City: HUGO State: MN
County:
License #: 1008-200-82
Agreement: Y
Docket:
NRC Notified By: GEORGE F. JOHNS, JR.
HQ OPS Officer: STEVE SANDIN
Notification Date: 09/13/2007
Notification Time: 17:11 [ET]
Event Date: 09/13/2007
Event Time: 14:00 [CDT]
Last Update Date: 12/17/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
SONIA BURGESS (R3)
PATRICE BUBAR (FSME)
ILTAB (via email) ()
CNSC (via fax) ()

This material event contains a "Less than Cat 3" level of radioactive material.

Event Text

AGREEMENT STATE REPORT INVOLVING A STOLEN TROXLER MOISTURE DENSITY GAUGE

The following information was received via email:

"The Minnesota Department of Health (MDH) has been notified that on September 13, 2007 at approximately 2:00 PM, a moisture-density gauge containing sealed sources of radioactive material was stolen from a pick-up truck owned by Asset Management. The truck was parked at a residence in Forest Lake, Minnesota, and the gauge was believed to have been stolen sometime during the previous night.

"The MDH, which regulates the use of these types of radioactive materials in Wisconsin, is working with the Forest Lake Police Department and officials of Asset Management to recover the stolen gauge.

"The moisture density gauge is used to measure the moisture content and density of soils and building materials. The gauge is a yellow box measuring approximately 30 inches in length, 14 inches in width and 17 inches in height (see attached picture). The gauge and the case weigh a total of 90 pounds. The gauge itself weighs 29 lbs. The case and the gauge are clearly marked as containing radioactive materials. . ."

The gauge is a Troxler Model 3430 (S/N 33277) containing two (2) sources; 9 milliCuries Cs-137 and 44 milliCuries Am-241:Be. The State of Minnesota issued a press release with contact information for the return of the gauge.

MN Report No.: MN070006.

* * * UPDATE FROM MDH (JOHNS) TO CROUCH AT 1358 EST ON 12/17/07 * * *

The Troxler moisture density gauge was recovered at 0600 CST this morning. An unknown person placed the gauge outside the Forest Lake, MN Police Department. The gauge appeared intact and no detectable leakage existed. The gauge was returned to the licensee.

Notified R3DO (Duncan), FSME (Morell), and ILTAB via email.

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.

To top of page
General Information or Other Event Number: 43839
Rep Org: FLORIDA BUREAU OF RADIATION CONTROL
Licensee: TIERRA INC.
Region: 1
City: WEST PALM BEACH State: FL
County:
License #: 2307-2
Agreement: Y
Docket:
NRC Notified By: STEVE FURNACE
HQ OPS Officer: JOHN MacKINNON
Notification Date: 12/12/2007
Notification Time: 10:54 [ET]
Event Date: 12/12/2007
Event Time: 09:00 [EST]
Last Update Date: 12/12/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
JIM KRAFTY (R1)
GREG MORELL (FSME)
ILTAB (e-mailed) ()

This material event contains a "Less than Cat 3" level of radioactive material.

Event Text

FLORIDA AGREEMENT STATE REPORT - STOLEN TROXLER MOISTURE DENSITY GAUGE


"Troxler gauge stolen from storage facility. Incident discovered at 0900 12-Dec-07; this office notified at 1015 same day. Police on scene. Owner will offer reward. No further action will be taken by this office."


Isotopes: Cs-137 & Am-241

Activities: 8 mCi's & 40 mCi's

Material Form: By-product; Special Form

Probable Disposition of Material: Material stolen and not recovered

Model Number: Troxler 3430, Serial Number 32900


Organizations Notified: HSER, HSERE, St. Augustine Police Dept. Case #021610


Incident Location: 150 St. Johns Business Place Suite 303, St. Augustine, FL 32095

Location Classification: Controlled Area

FL Incident Number: FL07-194

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.

To top of page
General Information or Other Event Number: 43843
Rep Org: AREVA FUEL MANUFACTURING
Licensee: U.S. NUCLEAR REGULATORY COMMISSION
Region: 1
City: LYNCHBURG State: VA
County:
License #: SNM-1227
Agreement: N
Docket: 70-1257
NRC Notified By: GAYLE ELLIOT
HQ OPS Officer: HOWIE CROUCH
Notification Date: 12/14/2007
Notification Time: 14:29 [ET]
Event Date: 12/14/2007
Event Time: [EST]
Last Update Date: 12/17/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
21.21 - UNSPECIFIED PARAGRAPH
Person (Organization):
JIM KRAFTY (R1)
ALAN BLAMEY (R2)
JOHN MADERA (R3)
RUSSELL BYWATER (R4)
MICHELLE BURGESS (FSME)
PAO-TSIN KUO (NRR)
JOHN THORP (NRR)

Event Text

PART 21 REPORT - RASCAL SOFTWARE CODE VERSION 3.0.5

RASCAL is a software code used to estimate projected dose as a result of a radioactive release. AREVA reported that the software underestimates the dose in its calculation of a uranium release using the enrichment option. This underestimate is reported to be on the order of a factor of 0 to 8.6 times when the enrichment is in a range of 0 to 5 percent.

AREVA is recalculating the doses in their Radiation Hazards Analysis. Specifically, the licensee indicated that it will apply a factor to correct for the "enrichment" option of the code if a real or potential emergency release needs to be assessed.

Other facilities that use RASCAL are not known.

* * * UPDATE FROM NRC TO R. ALEXANDER AT 1036 EST ON 12/17/07 * * *

On Friday, December 14, 2007, the Areva fuel manufacturing facility of Richland, Washington, notified NRC regarding an error in the RASCAL computer code. The reported issue involves a code option that would be used primarily by fuel cycle facilities. Specifically, the issue involves use of an option in the code that allows users to select a uranium enrichment percentage instead of entering the activity of each uranium nuclide separately (U-234, U-235, and U-238).

This error is not present for uranium hexafluoride releases. Doses from the release of enriched uranium hexafluoride are calculated correctly.

The NRC is currently evaluating the RASCAL computer code issue reported by Areva. Until the computer code is updated, fuel cycle facilities should not use the uranium enrichment percentage option for releases other than uranium hexafluoride. As an alternative, users should enter the activity of each uranium nuclide separately (U-234, U-235, and U-238) in order to insure correct dose projections from the code.

All registered RASCAL code users and the RASCAL Users Group have been notified by email regarding this issue. Any RASCAL user seeking additional information on this issue can contact the NRC via email at sam2@nrc.gov.

Notified R1DO (Trapp), R2DO (Seymour), R3DO (Duncan), R4DO (Farnholtz), and NRR (Kuo and Hodge).

To top of page
Power Reactor Event Number: 43847
Facility: MONTICELLO
Region: 3 State: MN
Unit: [1] [ ] [ ]
RX Type: [1] GE-3
NRC Notified By: MARK KRUCE
HQ OPS Officer: RYAN ALEXANDER
Notification Date: 12/17/2007
Notification Time: 10:37 [ET]
Event Date: 12/17/2007
Event Time: 02:03 [CST]
Last Update Date: 12/17/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
ERIC DUNCAN (R3)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 97 Power Operation 97 Power Operation

Event Text

LOSS OF EMERGENCY ASSESSMENT CAPABILITY (SPDS)

"At 0203 CST, the plant experienced a loss of the Safety Parameter Display System (SPDS) and other computer systems used for emergency assessment in the Control Room, Technical Support Center (TSC) and Emergency Operating Facility. This capability was fully restored at 0600 CST. The cause of the loss was an electrical fault in an intercom box in the TSC."

The licensee will notify the NRC Resident Inspector.

Page Last Reviewed/Updated Thursday, March 29, 2012
Thursday, March 29, 2012