Event Notification Report for February 20, 2007

OFFSITE STATE NOTIFICATION REQUIRED BY NPDES PERMIT

"Notification to NRC following notification to the following government agencies on 02/20/2007 at 0830 (CST): State of Minnesota Pollution Control Agency - Water Control Quality, State of Minnesota Department of Emergency Management - State Duty Officer.

"Notifications made to above government agencies in accordance with Monticello NPDES permit for a collapse of cooling tower panels which resulted in a diversion of circulating flow overland to the discharge canal, resulting in washing of soil and gravel into the canal."

The licensee informed the NRC Resident Inspector.

AGREEMENT STATE - STOLEN TROXLER MOISTURE DENSITY GAUGE

"The New Hampshire Department of Health and Human Services, Division of Public Health Services' Radiological Health Section was notified at approximately 1:45 p.m. on Tuesday, February 20, 2007, by a representative from John Turner Consulting, Inc., of the theft of a portable soil moisture/density gauge from its vehicle on Tuesday afternoon, February 20, 2007, which was located at the licensee's facility in Dover, New Hampshire. The Licensee reported that a Troxler Model 3430 (Serial # 36724) portable gauge containing 9 millicuries of Cesium-137 and 44 millicuries of Americium-241: Beryllium was stolen from the licensee's vehicle parked at the licensee's facility located in [address deleted] Dover, New Hampshire. The locked gauge was padlocked in its original carrying case, which was attached to the bed of the vehicle with two chains with two separate locks. The State is following the incident. Local law enforcement has been notified by the licensee. Follow-up information will be provided to NRC."

NH Event Report ID No.: NH-07-001

* * * UPDATE PROVIDED BY STATE (DENNIS O'DOWD) VIA EMAIL TO JEFF ROTTON AT 1653 EST ON 02/20/2007 * * *

The following information was provided by the State via email:

"As of approximately 4:35 p.m., Tuesday, February 20, 2007, the portable nuclear gauging device reported by NH Licensee John Turner Consulting, Inc. (License No. 423R) has been recovered and was retrieved by the licensee. The licensee's representative has confirmed that the gauge had been left with the Madbury (NH) Police Department, located near the Dover, New Hampshire city line, and was locked inside of its locked case when recovered.

"The New Hampshire Radiological Health Section will be dispatching an inspector or inspectors to the licensee's facility on Wednesday, February 21, 2007, to conduct further investigation into this incident."

Notified R1DO (T. Jackson), FSME EO (Moore), ILTAB via email and Canada via fax.

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.

HPCI DECLARED INOPERABLE DUE TO AN APPARENT EQUIPMENT MALFUNCTION

"On February 20, 2007 at 1720 hours, the High Pressure Coolant Injection (HPCI) system was declared inoperable. During a system walkdown the HPCI Motor Speed Changer (MSC) was discovered energized. The MSC controls HPCI turbine speed during system startup and shutdown, and should not have been energized at the time of the walkdown. Additional troubleshooting determined the MSC was not functioning properly, rendering the HPCI system inoperable. This event is being reported as a condition that could have prevented fulfillment of a safety function in accordance with 10CFR50.72(b)(3)(v)(D) because the HPCI system is a single train system and the loss of HPCI could impact the plant's ability to mitigate the consequences of an accident. In accordance with Technical Specification Action 3.5.1.F, the Reactor Core Isolation Cooling (RCIC) system was confirmed operable. Further troubleshooting and engineering evaluations are continuing."

The licensee informed the NRC Resident Inspector.

* * * RETRACTION AT 1146 ON 3/5/2007 FROM ERIK MARKS TO MARK ABRAMOVITZ * * *

"The purpose of this report is to retract the ENS report made on February 20, 2007 at 1720 hours (ENS #43177) under 10CFR50.72(b)(3)(v)(D), a condition that could have prevented fulfillment of a safety function. The initial report was made when the Unit 2 High Pressure Coolant Injection (HPCI) system was declared inoperable following a system walkdown that discovered the HPCI Motor Speed Changer (MSC) was energized. The MSC controls HPCI turbine speed during system initiation, and should not have been energized at the time of the walkdown since the system was not in operation. During troubleshooting the MSC responded slower than expected. Due to this unexpected behavior, it was not certain if HPCI could have met its design basis requirements. However, a subsequent engineering evaluation has determined that at the time of discovery, the HPCI system injection time would have been sufficient to meet its safety function. Repairs to HPCI were completed and the system was declared operable on February 22, 2007 at 0036 hours."

The licensee notified the NRC Resident Inspector.

Notified the R3DO (Orth).

AGREEMENT STATE REPORT - ABANDONED INDUSTRIAL GAUGE FOUND IN SCRAP YARD

The following was provided by the State via facsimile:

"On the morning of 03/02/07 NCRPS became aware of a potential unknown radioactive source discovered [on 2/20/07] by a scrap yard [State Line Scrap Metal]. NCRPS dispatched a health physicist in an effort to gain reliable information. The health physicist was at the scrap yard by early afternoon and had collected technical information to be used in fully analyzing the unknown source. The source is potentially an abandoned industrial gauge (licensed radioactive material) and NCRPS is following protocol to determine a responsible party. The source was packaged in a 55 gallon drum and isolated in a safe and controlled manner (exposure rates less than 2 mR/hr) prior to site departure on 03/02/07.

"NCRPS is continuing event evaluation and determining necessary follow-up actions."

The State has not determined the source or the strength of the source at this time.

NC report ID number: NC-07-07