Headquarters Daily report OCTOBER 03, 1994 *************************************************************************** REPORT NEGATIVE NO INPUT ATTACHED INPUT RECEIVED RECEIVED HEADQUARTERS X REGION I X REGION II X REGION III X REGION IV X *************************************************************************** PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION III OCTOBER 3, 1994 Licensee/Facility: Notification: Commonwealth Edison Co. MR Number: 3-94-0176 Braidwood 1 2 Date: 10/03/94 Braceville,Illinois SRI VIA PC Dockets: 50-456,50-457 PWR/W-4-LP,PWR/W-4-LP Subject: SPENT FUEL POOL FUEL BUNDLE MOVEMENT ERROR Reportable Event Number: N/A Discussion: On October 1, 1994, during fuel movements in the spent fuel pool, the licensee mispositioned fuel bundles. Subsequently, the licensee discovered the error during the course of additional fuel movements and, following a technical review by the nuclear engineering department to verify subcriticality, repositioned the bundles to their proper locations. Currently, the licensee has halted all further fuel movements pending a root cause evaluation and corrective actions to prevent recurrence. Regional Action: The inspectors reviewed and verified the licensee's subcriticality calculations and will follow up on the licensee's root cause evaluation and corrective actions. Contact: L. MILLER (708)829-9629 PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION III OCTOBER 3, 1994 Licensee/Facility: Notification: Dept Of The Army MR Number: 3-94-0177 N/A Date: 09/30/94 Rock Island,Illinois PHONE CALL FROM LICENSEE Dockets: 03013027 License No: 12-00722-06 Subject: BROKEN TRITIUM SOURCES Reportable Event Number: N/A Discussion: On September 30, 1994, the licensee reported that four tritium sources were broken on August 22, 1994, during repairs on a panoramic telescope in a repair shop at the National Guard Training Center in Jefferson City, Arkansas. Each source contained 0.6 Curies (22 GBq) of tritium. Contamination surveys showed from 100,000 to 250,000 disintegrations per minute (dpm) over a one square meter area on the floor of the repair shop. The licensee reported the worker who was repairing the telescope received a total dose effective equivalent of 5 millirem (50 mSv) from his exposure to tritium. The repair shop was closed during the decontamination efforts that lasted from August 22 to 30, 1994. The licensee should report unplanned contamination events that restrict access to an area to the NRC Operations Center within 24 hours. The licensee plans to improve their methods of reporting these incidents to the NRC. The licensee will submit a written report which will include both their corrective actions for the contamination event as well as the reporting deficiency. Regional Action: Region 3 will review the licensee's written report and determine whether any further action is necessary. Contact: W.P. REICHHOLD (708)829-9839 J.A. GROBE (708)829-9837 PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION IV OCTOBER 3, 1994 Licensee/Facility: Notification: Wolf Creek Nuclear Oper. Corp. MR Number: 4-94-0115 Wolf Creek 1 Date: 10/03/94 Burlington,Kansas LICENSEE TELECON WITH SRI Dockets: 50-482 PWR/W-4-LP Subject: DEGRADED DECAY HEAT REMOVAL IN THE SPENT FUEL POOL AND FIRE IN EMERGENCY DIESEL GENERATOR (EDG) A Reportable Event Number: N/A Discussion: During Refueling Outage 7, on September 30, 1994, at 1:40 p.m., operators stopped Spent Fuel Pool Cooling Pump B due to smoke emanating from the inboard bearing. The entire core had been offloaded into the spent fuel pool, and time to boil in the spent fuel pool was calculated to be approximately 5.8 hours. A significant portion of Train A equipment was out of service for maintenance. Operators restored Component Cooling Water Train A and Spent Fuel Pool Cooling Pump A 18 minutes later, thus restoring decay heat removal. Essential Service Water Pump A had been restored earlier that morning to support EDG A testing. EDG A was still inoperable due to maintenance and retesting activities. With the plant in this configuration, the only functional spent fuel pool cooling pump, Pump A, could not be powered from the operable EDG using the normal equipment configuration. At 7:31 p.m. the area operator in the EDG A room reported a fire in the EDG power cabinet. The diesel had been running loaded for approximately 2 hours as part of a postmaintenance retest. Operators deenergized the bus and the fire was extinguished using a hand held carbon dioxide fire extinguisher. The fire resulted from a short in the Phase B exciter power transformer. The licensee immediately began reviewing methods for providing emergency power to Spent Fuel Pool Cooling Pump A via either defeating interlocks and cross-connecting from EDG B or running temporary power cables. No emergency plan classification was required by the licensee's procedure for emergency action levels. Repairs were made and EDG A was declared operable on October 2, 1994, at 6:30 p.m. The licensee is now in a Train B outage for scheduled outage work. Additionally, on September 30, while attempting to transfer water from Recycle Holdup Tank (RHUT) A to RHUT B, a faulty valve lineup resulted in inadvertently directing approximately 900 gallons from RHUT A to the spent fuel pool. An operator monitoring the transfer observed the change in RHUT A level without the corresponding change in RHUT B level and terminated the transfer. The licensee determined that the error was a procedural deficiency and that the operators had performed the procedure as written. Chemistry samples from the spent fuel pool determined that all parameters were within specification following the addition. Regional Action: The resident inspector and Regional staff will monitor licensee actions. Contact: J. F. Ringwald (316)364-8653