Event Notification Report for April 06, 2015

TECHNICAL SUPPORT CENTER OUT OF SERVICE FOR PLANNED MAINTENANCE

"On 04/06/2015, planned preventive maintenance activities are being performed on the Braidwood Generating Station Technical Support Center (TSC) Ventilation System. The work will be completed within approximately 42 hours. This activity includes preventive maintenance on the TSC condensing unit which affects the TSC ventilation. During the planned maintenance, the TSC condensing unit will be rendered non-functional.

"If an emergency is declared requiring TSC activation during this period, the TSC will be staffed and activated using existing emergency planning procedures unless the TSC becomes uninhabitable due to ambient temperature or other conditions. If relocation of the TSC becomes necessary, the Emergency Director will relocate the TSC staff as necessary. This planned maintenance will not impact the emergency filtration capability of the TSC.

"This event is reportable per 10CFR50.72(b)(3)(xiii) for 'any event that results in a major loss of emergency assessment capability.' The planned maintenance will not be able to restore the TSC condensing unit to service within the facility activation time specified in the emergency plan (1 hour) in the event of an accident. The Emergency Response Organization team has been notified of the maintenance and the possible need to relocate during an emergency.

"The licensee has notified the NRC Resident Inspector."

* * * UPDATE FROM GREG HARNOIS TO JOHN SHOEMAKER AT 1013 EDT ON 4/8/15 * * *

"The TSC ventilation system has been restored to normal operation as of 0600 CDT on April 8, 2015.

"The NRC Resident Inspector has been notified."

Notified R3DO (Skokowski).

AGREEMENT STATE REPORT - DENSITY GAUGE BROKEN SHUTTER

The following information was received via E-mail:

"On April 6, 2015, the licensee radiation safety officer reported that a density measuring device, ThermoFisher Scientific model 5201, with Texas Nuclear Source Cesium-137, 100 millicuries, serial number GV-2806 had a broken shutter. The shutter block is disconnected from the arm. A ThermoFisher Scientific service technician has been contacted and scheduled to repair the gauge at the site. The shutter remains in the closed position until repairs are completed. There is no exposure hazard to any individual. Updates will be provided in accordance with SA300 guidelines."

Texas Incident Number: I-9297

UNANALYZED CONDITION DUE TO VOLUME CONTROL TANK ISOLATION TIME ANALYSIS ERROR

"On April 6, 2015, Watts Bar determined that the current Unit 1 Fire Protection Report (FPR) analysis for 10 CFR 50, Appendix R contained a non-conservative time for isolation of Volume Control Tank (VCT) following a postulated fire in room 737.0-A1A. Due to multiple fire-induced failures, Component Cooling System (CCS) cooling of letdown flow to the VCT will be lost in conjunction with increased Reactor Coolant System (RCS) injection flow through Reactor Coolant Pump (RCP) seals and Boron Injection Tank (BIT) flowpaths. As a result, VCT temperature and pressure would increase, which could cause RCP seal damage and loss of RCS inventory, and net positive suction head (NPSH) to the Centrifugal Charging Pumps (CCPs) could be lost. In this postulated fire scenario, Thermal Barrier Cooling is also not available due to fire-induced failures. The current FPR analysis assumes a time of 70 minutes for closure of VCT outlet isolation valves. Preliminary analysis performed by TVA showed that VCT outlet isolation is required in approximately 4 minutes.

"As a result, Watts Bar Unit 1 is in an unanalyzed condition. This condition significantly degrades plant safety because operator action to isolate the VCT in the event of a postulated fire in room 737.0-A1A would not have been performed in time to prevent RCP seal damage and loss of RCS inventory and eventual loss of NPSH to the CCPs.

"Watts Bar is utilizing previously established fire watches in the affected fire areas as a compensatory measure.

"This issue is being reported under 10 CFR 50.72(b)(3)(ii)(B), 'unanalyzed condition that significantly degrades plant safety.'

"The Watts Bar NRC Resident Inspector has been notified."

AGREEMENT STATE REPORT - RADIOGRAPHY CAMERA LOST AND RETRIEVED

The following report was received via e-mail:

"A radiography exposure device was found by a citizen in some weeds on the side of a road. The citizen called the New Iberia Fire Department who contacted the Iberia Parish Sheriff's Department. The Fire Department then contacted QIT [Quality Inspection & Testing, LLC] by the information posted on the side of the radiography exposure device, (I R Camera). The camera was discovered in some weeds in a parking lot located at 1000 Parkview Dr., New Iberia, LA. A company official for QIT was contacted by the Fire Department who relayed the information to the Business Manager for QIT and the Assistant RSO.

Background:

"The on April 6, 2015, two 'trained and trustworthy individuals' were preparing a 'crew' truck to perform radiography work at a temporary jobsite. [The first Radiographer] was preparing the documentation while [the Assistant Radiographer] was equipping and securing the truck with a Category II radiography source. [The Assistant Radiographer] got distracted and placed the exposure device on the vehicle's rear bumper. Before leaving QIT's office, [The first Radiographer] questioned [the Assistant radiographer] about securing the exposure device for transport.

"The crew left QIT in route to the temporary job. They passed up the jobsite and did a U-turn where the exposure device was later discovered. They arrived at the temporary jobsite and began to setup for the job. They became aware that they did not have the exposure device that [the Assistant Radiographer] stated he had placed in the truck's 'vault.' The crew decided to back-track their route in an attempt to locate the missing exposure device. They did not locate the device because [the QIT RSO] had already retrieved the device from the lot at 1000 Parkview Dr. and returned it to QIT's office.

"The RSO and the assistant RSO began their investigation into this incident. It began with interviewing and getting statements from both individuals directly involved in this incident.

"The next morning April 7, 2015, approximately 11:00 AM, [the QIT RSO] called in a preliminary notification to LDEQ's [Louisiana Department of Environmental Quality], Assessment, Radiation Licensing Section. The incident was assigned to an investigator/inspector in our Acadiana Regional office.

"At this time, LDEQ considers this incident still open. The incident is still under investigation and review by the staff. Enforcement and corrective actions will be determined by the out-come of the investigation. The incident was considered under control by QIT and reported after the exposure device was back at the QIT office.

"The equipment was a S.P.E.C., Model 150 exposure device, S/N 1114 device loaded with approximately 79 Ci of Ir-192. The device was surveyed, secured, placed in the QIT vault and labelled 'NON-USE'."

Louisiana ID Number: LA150008

THIS MATERIAL EVENT CONTAINS A "CATEGORY 2" LEVEL OF RADIOACTIVE MATERIAL

Category 2 sources, if not safely managed or securely protected, could cause permanent injury to a person who handled them, or were otherwise in contact with them, for a short time (minutes to hours). It could possibly be fatal to be close to this amount of unshielded radioactive material for a period of hours to days. These sources are typically used in practices such as industrial gamma radiography, high dose rate brachytherapy and medium dose rate brachytherapy. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf