Event Notification Report for April 25, 2005

THE PLANT'S TSC (TECHNICAL SUPPORT CENTER) HAS BEEN TAKEN OUT OF SERVICE DUE TO PLANNED MAINTENANCE WORK

"On 4/2512005 at 12:00 p.m., EDT the Hatch Nuclear Plant's Technical Support Center (TSC) was removed from service for planned maintenance and equipment modifications. The maintenance activities require relocation of the control panel (1X75-C001) which contains the HVAC controls and annunciators as well as the radiation monitoring meter and annunciator. The loss of this equipment requires taking the TSC out of service. The maintenance activities are scheduled to take five weeks. The alternate TSC will remain operable and available, so no loss of TSC function will occur due to the maintenance activity.

"This event is reportable per 10CFR50.72 (b)(3)(xiii) as described in NUREG-1022, Rev. 2 since this work activity results in a loss of an emergency response facility for the duration of the evolution."


The NRC Resident Inspector was notified and state and local notifications will be made.


* * * UPDATE ON 05/04/05 @ 1510 BY GREG JOHNSON TO GOULD * * *

The TSC was returned to service at 1100 EDT on 05/04/05.

The NRC Resident Inspector was notified.

The Reg 2 RDO (Lesser) was notified.

LICENSEE REPORTED A LOST TROXLER GAUGE MODEL 3430

A technician for the Craig Testing Laboratory placed a Troxler gauge model 3430 and its transportation box into the back of his pickup securing it with a chain, however he did not latch the top of the box or close his truck's tailgate. When he drove from the job site in Pocoson, PA., he heard a noise but he did not stop until he reached a stop light (approx 2 miles away). He got out of the truck and noticed the transport box was dangling from the back of the truck still attached to the chain, but without the Troxler gauge inside. He retraced his route, but there was no Troxler gauge. The Troxler gauge (SN # 25540) contained 8 millicuries of Cs-137 and 40 millicuries of Am/Be-241. The local police Department was notified.

MOISTURE DENSITY GAUGE LOST AT JOB SITE

A Troxler Model 3440 moisture density gauge (S/N 33256, activity 8.8 milliCurie of Cs-137 and 44 milliCurie Am/Be) was lost at a job site after 4:00 pm on April 25, 2005. The gauge user did not check that the gauge was present in the transport vehicle before proceeding to the next job site. The fence around the jobsite was locked, and no other workers were present to determine whether the gauge was found and placed in the licensee's work trailer. Officials (local police, etc) will be notified if the gauge is not found at the job site on 4/26/05.

Nevada Report NV-05-005.

* * * UPDATE PROVIDED BY THE STATE (MARSHALL) TO NRC (HELD) ON 4/27/05 AT 11:23 * * *

The following update was provided by the State via facsimile:

"The gauge was found the same day the device was lost. The masonry contractor who found the gauge at the job site contacted a contractor who is also a gauge licensee and was working at the same job site. The gauge licensee/contractor then took possession of the gauge and notified Owens Geotechnical who took possession of the gauge on 4/26/05. This incident is considered to by closed."

R4DO (Johnson) and NMSS EO (Essig) notified.

HPCI DECLARED INOPERABLE

"On 4/25/05 @1655, Engineering completed an evaluation and notified Operations that leakage at the packing leak off plug on the bonnet of MO-2-23-014, the Unit 2 HPCI Turbine Steam Supply Valve, is part of the ASME Class 2 piping boundary. Per station procedures, upon discovery of leakage from a Class 2 component pressure boundary, the component is declared inoperable. Therefore MO-2-23-014 and the Unit 2 HPCI system was inoperable. Reactor operation is unaffected and Unit 2 remains at 100% power. The inoperability of the HPCI system places the Unit in a 14-day shutdown Tech Spec action statement. Further investigation of the cause and the ASME Code requirements is in progress."

The NRC Resident Inspector was notified

* * * RETRACTION ON 6/14/05 AT 1659 EDT BY D. FOSS TO A. COSTA * * *

"The purpose of this notification is to retract a previous report made on 4/25/05 at 2041 hours (EN# 41638). Notification of this issue to the NRC on 4/25/05 was initially made it's a result of declaring the Unit 2 High Pressure Coolant Injection (HPCI) system inoperable as a result of leakage at the packing leak off line plug on the valve bonnet of the HPCI Turbine Steam Supply valve (MO-2-23-014). It was determined that this condition constituted ASME Section XI Class 2 pressure boundary leakage. Therefore, the associated equipment was declared inoperable in accordance with station procedures.

"Since the initial report, Engineering has determined that the HPCI system was capable of performing its safety function. Although station procedures require ASME Section XI Class 2 components to be declared inoperable when pressure boundary leakage is determined to exist, the safety function of the MO-2-23-014 was maintained. Leakage through the seal weld on the packing leak off line plug did not affect the capability of the MO-2-23-014 valve to perform its safety function. Therefore, HPCI was capable of performing its safety function.

"Maintenance was planned and HPCI was removed from service on 4/26/05 to repair the HPCI MO-2-23-014 valve bonnet. The valve was repaired and the system was returned to service by 1730 hours on 4/26/05 (CR 328735).

"The NRC resident has been informed of the retraction."

Notified R1DO (Krohn).

LOST SOURCE FROM A LEVEL MEASURING DEVICE

Licensee reported that two 50 millicurie Cs-137 sources, used in level measuring devices, were found to be missing from a magnesium oxide producing facility that had been closed for two years. It was determined that two sources were missing after a review of their registration around the April-May time period. Since then, they located one of the two sources, brand new, in a crate on a shelf at the facility. They located the non-nuclear part of the device (the receiver) on a hopper which was at a scrap yard on site, but the sending unit (the nuclear part) was missing. They continued looking for the sender, but could not find it.


* * * UPDATE ON 07/27/05 @ 1745 BY ASHLEY TULL TO CHAUNCEY GOULD * * *

The single source which is still lost is a TN Technologies Model 5200 gauge containing 200 millicuries Cs-137 not 50 millicuries.


Notified Reg 3 RDO (Mark Ring) and NMSS EO (Joe Giitter)


* * * UPDATE ON 07/27/05 @ 2142 BY JOHN CROOKS TO CHAUNCEY GOULD * * *

Two NRC Inspectors visited the closed facility with a radiation detector and located the missing device in a parts warehouse at the facility. It was on a shelf and had turned rusty and was unidentifiable. The device was isolated in another building with the other device that had been found.

Notified Reg 3 RDO (Mark Ring), NMSS EO (Joe Giitter) and TAS(E-MAIL)