Headquarters Daily Report APRIL 13, 1998 *************************************************************************** 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 - HEADQUARTERS APRIL 13, 1998 Licensee/Facility: Notification: MR Number: H-98-0060 Proposed Generic Communication Date: 04/13/98 Subject: Proposed NRC Information Notice Discussion: The NRC intends to issue an information notice to address the potential problems resulting from free release of radioactive materials from the radiologically controlled area at nuclear power plants. Contacts: John Minns, NRR/DRPM/PDND 301-415-3166 E-mail: jlm3@nrc.gov Tom Greene, NRR/DRPM.PECB 301-415-1175 E-mail: tag@nrc.gov _ HEADQUARTERS MORNING REPORT PAGE 2 APRIL 13, 1998 Licensee/Facility: Notification: Part 21 Database MR Number: H-98-0061 Itt Barton Date: 04/13/98 Subject: Part 21 - Potential chatter of differential pressure indicating switches under seismically induced vibration Discussion: VENDOR: ITT Barton PT21 FILE NO: 98-27-0 DATE OF DOCUMENT: 03/06/98 ACCESSION NUMBER: 9803130205 SOURCE DOCUMENT: LETTER REVIEWER: PECB, C. Petrone NEW ISSUE. The Clinton licensee reports that the vendor identified a condition potentially affecting ITT Barton models 580A, 581A, 583A, and 583B differential pressure indicating switches supplied with certification of IEEE-323/344 qualifications. The vendor recently identified that the miniature switches used inside these instruments may have operating forces too low to preclude switch contact chatter in some installations when subjected to seismically induced vibrations. _ HEADQUARTERS MORNING REPORT PAGE 3 APRIL 13, 1998 Licensee/Facility: Notification: Part 21 Database MR Number: H-98-0062 Reliance Electric Date: 04/13/98 Subject: Part 21 - Hydrogen recombiner fan motors have bearings different from nameplate specification Discussion: VENDOR: Reliance Electric PT21 FILE NO: 98-28-0 DATE OF DOCUMENT: 03/09/98 ACCESSION NUMBER: 9803230013 SOURCE DOCUMENT: LETTER REVIEWER: PECB, T. Greene NEW ISSUE. The Clinton licensee reports that bearings installed in hydrogen recombiner cooling fan motor 0HG04CB in both hydrogen recombiner trains are not the same as specified on the motor nameplate. The motor is a 3-horsepower, 213T frame, 460-volt alternating current, 3-phase motor, vendor serial number 3YF882654A2, supplied by Rockwell International (now Boeing North American Rocketdyne Division) and manufactured by Reliance Electric Company. _ REGION III MORNING REPORT PAGE 4 APRIL 13, 1998 Licensee/Facility: Notification: Toledo Edison Co. MR Number: 3-98-0028 Davis Besse 1 Date: 04/10/98 Oak Harbor,Ohio VIA TELEPHONE Dockets: 50-346 PWR/B&W-R-LP Subject: REACTOR SHUTDOWN FROM 30 PERCENT POWER FOR ELEVENTH REFUELING OUTAGE Discussion: On April 10, while shutting down the reactor to begin the eleventh refueling outage, both makeup filters became plugged by resin which was released from a purification demineralizer that was placed in service to remove lithium from the reactor coolant system. Because of the plugged filters, letdown pressure increased above the setpoint of a letdown relief valve, thereby opening the valve, and relieving 80 gallons of water to the reactor coolant drain tank. In response to the lifted relief valve, the operators isolated letdown and entered an abnormal procedure to begin a rapid plant shutdown. One running makeup pump provided approximately 15 gpm seal injection flow to the reactor coolant pumps, and 15 gpm bypass flow around a closed makeup isolation valve. The total makeup flow to the reactor coolant system caused pressurizer level to increase. Because of plugged filters in the clean waste system, efforts to reduce pressurizer level by diverting to the clean waste system were unsuccessful. The plant was manually tripped from approximately 30 percent power when pressurizer level approached the Technical Specification limit of 305 inches. No engineered safety feature actuations occurred because of the manual trip. The refueling outage is expected to last for 37 days. Major planned activities include steam generator tube inspections, turbine generator and reactor coolant pump maintenance, resolution of the thermolag issue, modification for overpressure protection of containment penetrations, and refueling. Regional Action: Resident inspectors responded to the site to monitor plant activities following the reactor shutdown. Contact: STEVE CAMPBELL (419)898-2775 TOM KOZAK (630)829-9866 _