Headquarters Daily Report JANUARY 24, 1996 *************************************************************************** REPORT NEGATIVE NO INPUT ATTACHED INPUT RECEIVED RECEIVED HEADQUARTERS û REGION I û REGION II û REGION III û REGION IV û PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION I JANUARY 24, 1996 Licensee/Facility: Notification: Northeast Utilities MR Number: 1-96-0003 Millstone 1 Date: 01/23/96 Waterford,Connecticut RI PC Dockets: 50-245 BWR/GE-3 Subject: PERSONNEL CHANGES Discussion: On January 18, 1996, the licensee announced that John Ferguson, Unit 1 Design Manager, was being replaced by Bruce Beuchel effective immediately. In addition, Hollis Risely, Director of Unit 1 Engineering would be replaced by Joe Vargas effective February 1, 1996. Both replacement personnel were key managers in the Seabrook organization, Joe Vargas was Director North Atlantic Engineering Division and Bruce Beuchel was Manager of Engineering Performance. Regional Action: NONE Contact: JACQUE DURR (610)337-5224 _ REGION I MORNING REPORT PAGE 2 JANUARY 24, 1996 Licensee/Facility: Notification: Public Service Electric & Gas Co. MR Number: 1-96-0002 Hope Creek 1 Date: 01/23/96 Hancocks Bridge,New Jersey SRI PC Dockets: 50-354 BWR/GE-4 Subject: MANUAL EMERGENCY DIESEL GENERATOR TRIP DUE TO HIGH JACKET WATER TEMPERATURE Discussion: On January 21, 1995, with the Hope Creek station in MODE 5, an equipment operator (non-licensed) noticed rapidly increasing jacket water temperatures on the A emergency diesel generator 12 minutes into a maintenance run and shutdown the machine using the emergency stop switch at the local control panel. Maximum jacket water temperature was observed to be 190 degrees F, 5 degrees F above the maximum operating limit. Licensee post-event review determined that the safety auxiliaries cooling system inlet isolation valve to the jacket water heat exchanger was shut and tagged. This valve was tagged to support a work activity not related to the maintenance completed on the diesel generator. Hope Creek MODE 5 operation requires that only two of the four emergency diesel generators be operable; both the B and D units currently satisfy this technical specification. Station management is conducting a detailed follow up review of this event to determine root causes and establish corrective actions. In addition, an engineering review is being conducted to evaluate the potential adverse effects of diesel operation with elevated jacket water temperatures. The NRC resident inspector was informed of the event shortly after it occurred. Regional Action: Routine resident inspector follow up. Contact: Scott Morris (610)337-5316 Robert Summers (610)337-5189 _ REGION II MORNING REPORT PAGE 3 JANUARY 24, 1996 Licensee/Facility: Notification: MR Number: 2-96-0006 Law Engineering Date: 01/24/96 Cheseapeake,Virginia Dockets: 03014949 License No: 45-18377-01 Subject: MOISTURE/DENSITY GAUGE SOURCE FAILED TO RETRACT Discussion: On January 23, 1996, the licensee notified the NRC Operations Center that they had been unable to retract a cesium-137 source to its shielded position in a model 3411-D Troxler moisture/density gauge. The gauge contains 8 millicuries of cesium-137 and 40 millicuries of americum-241, and was being used at a job site in Cheseapeake, VA. The technician placed the gauge with the cesium-137 source in the exposed position into the back of a pickup truck and transported it to the licensee's office located approximately three quarters of a mile from the work site. The source was retracted to the shielded position by normal operating procedures once it was returned to the office. Radiation dose rates at 1 meter from the unshielded cesium-137 source are approximately 3 milliroentgen per hour (mR/hr) and 100 mR/hr at six inches. The dose received by the technician is estimated by the licensee to be 15 millirem (mrem). The licensee will submit the technician's film badge for processing on January 24, 1996. Regional Action: Region II will conduct an inspection of the licensee. The Commonwealth of Virginia has been notified. Contact: A. JONES (404)331-5565 _ REGION III MORNING REPORT PAGE 4 JANUARY 24, 1996 Licensee/Facility: Notification: Commonwealth Edison Co. MR Number: 3-96-0012 Zion 1 2 Date: 01/24/96 Zion,Illinois RES/INSPECTORS/DISCUSSION/LICENSEE Dockets: 50-295,50-304 PWR/W-4-LP,PWR/W-4-LP Subject: OVERFLOW OF OB LAKE DISCHARGE TANK Discussion: On January 20 the 0B lake discharge tank overflowed which caused localized flooding of various rooms. The overflow was uncontaminated secondary water. Initially, an equipment operator was draining steam generators 2A and 2C through the 0C blowdown monitor tank into the 0B lake discharge tank. After the draining was completed, the equipment operator did not restore the lineup completely (by closing two valves just upstream of the 0B lake discharge tank) because the restoration lineup was in another section of the procedure. The equipment operator began a new job by preparing to transfer water from the 0A and 0B blowdown monitor tanks to the Unit 2 condensate storage tank (CST). However, the two valves left open from the previous evolution caused the gravity draining of the Unit 2 CST to the 0B lake discharge tank. The overfill line of the 0B lake discharge tank connects to the 0A auxiliary building equipment drain collection tank (ABEDCT). After the ABEDCT reached its capacity, the excess water backed-up into the floor drain system into various rooms including the 1A RHR pump room, and the Unit 1 and 2 containment spray pump rooms. A contributing factor to the event included the failure of the high level alarm on the 0B lake discharge tank. The total water loss from the Unit 2 CST was 8300 gallons (560 gallons on the floors, the remainder in tanks and sumps). Regional Action: The resident inspectors are continuing to monitor the licensee's activities. Contact: LEWIS MILLER (708)829-9629 _ REGION III MORNING REPORT PAGE 5 JANUARY 24, 1996 Licensee/Facility: Notification: Mqs Inspection Company MR Number: 3-96-0013 Mqs Insepction Company Date: 12/14/95 Milwaukee,Wisconsin TELEPHONE CALL TO REGION III Dockets: 03004041 License No: 12-00622-07 Subject: POSSIBLE PERSONNEL OVEREXPOSURE (UPDATE) Discussion: The licensee's Facility Radiation Safety Officer had notified NRC Region III on December 13, 1995, that a film badge for an employee was determined to have been exposed to 116,120 millirems. On December 20, 1995, Region III completed a routine safety inspection and interviewed the licensee's personnel at their Milwaukee facility. The licensee sent the radiographer's blood sample to REAC/TS for chromosomal analysis. The report indicated that no chromosome damage was evident in the sample. Based on the results, the licensee has concluded that the individual did not receive this dose. The licensee will remove the 116,120 millirem exposure from the personnel dosimetry record. At this time, there is no plausible explanation for the high radiation exposure reported to the licensee. Regional Action: Region III considers this matter to be closed. Contact: THOMAS YOUNG (708)829-9835 THOMAS KOZAK (708)829-9866 _ REGION IV MORNING REPORT PAGE 6 JANUARY 24, 1996 Licensee/Facility: Notification: Nebraska Public Power District MR Number: 4-96-0014 Cooper 1 Date: 01/23/96 Brownville,Nebraska Resident Inspector Dockets: 50-298 BWR/GE-4 Subject: INDEPENDENT TEAM TO ASSESS CNS PERFORMANCE REGARDING PROBLEM IDENTIFICATION Discussion: Preliminary Notification PNO-IV-96-004 discussed the termination of two licensed operators for knowingly withholding information from their management during a reactivity mismanagement event. Subsequent to this event, the licensee learned of another instance in which maintenance personnel chose not to disclose that they had determinated and then reterminated the leads on a safety-related motor operated valve after learning that they were working on the wrong valve. This event occurred in December 1995 during the refueling outage. The licensee has initiated an independent Performance Problem Identification Team to: (1) determine if there is an atmosphere that fosters the withholding of information concerning performance-related errors, and (2) if it exists, identify the factors contributing to that atmosphere. Interviews of approximately 20 percent of the plant staff began on January 22, 1996. On January 24, 1996, the licensee called an all day maintenance stand- down to discuss issues surrounding the maintenance error. Regional Action: The Region will review the results of the licensee's review. Contact: Terry Reis (817)860-8185 Rebecca Nease (817)860-8154 _ REGION IV MORNING REPORT PAGE 7 JANUARY 24, 1996 Licensee/Facility: Notification: Texas Utilities Electric Co. MR Number: 4-96-0015 Comanche Peak 1 Date: 01/24/96 Glen Rose,Texas Senior Resident Inspector Dockets: 50-445 PWR/W-4-LP Subject: OUTAGE EXTENDED FOR INVERTER ENHANCEMENT Reportable Event Number: 29874 Discussion: This morning report updates Morning Report 4-96-0013. Licensee troubleshooting of Inverter IV1EC1 has identified several component failures and the evaluation to determine the cause of the inverter failure continues. The licensee is cooling down the plant to Mode 5 as required by Technical Specifications related to the inverter failure. In a conference call with Region IV, NRR, and AEOD on January 23, the licensee described their efforts to enhance the reliability of inverters at the site. Each unit has 12 inverters. There are 4 Class 1E 7.5 KVA Westinghouse inverters, 4 Class 1E 10 KVA Elgar inverters, 2 non-Class 1E 10 KVA Elgar inverters, and 2 non-Class 1E 25 KVA Elgar inverters. A licensee task team has been formed to evaluate the history of these inverters and to propose corrective actions to be performed (1) prior to restart, (2) to improve future preventive maintenance, and (3) to enhance system reliability over the long term. Inverter components are being reviewed to identify component aging issues and to determine which components should be replaced prior to restart. Elgar and Westinghouse technical representatives are on site to assist. It is anticipated that some or all of the inverters would be aligned, calibrated, and inspected prior to restart. Outage duration has not yet been determined, but the inverter efforts may require at least several days of Mode 5 conditions. Regional Action: Resident and regional inspectors are performing a special inspection to review the trips on January 17 and 22 and the licensee's corrective actions. Contact: A. T. Gody, Jr. (817)897-1500 _