Headquarters Daily report FEBRUARY 10, 1995 *************************************************************************** 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 - HEADQUARTERS FEB. 10, 1995 Licensee/Facility: Notification: Part 21 Database MR Number: H-95-0056 Amerace Corp. (Agastat Relay) Date: 02/10/95 Subject: Reportable Event Number: N/A Discussion: VENDOR: AMERACE CORPORATION (AGASTAT RELAY) PT21 FILE NO: 95046 DATE OF DOCUMENT: 02/08/95 ACCESSION NUMBER: SOURCE DOCUMENT: MR REVIEWER: OECB: R. DENNIG NIAGARA MOHAWK POWER CORP/NINE MILE POINT 1 REPORTS FAILURE OF 3MODEL FGPBC750, 24 VDC RELAYS IN ANALOG TRIP SYSTEM OF RPS TO FUNCTION. RELAYS PROVIDE ANNUNCIATION OF POWER SUPPLY FAILURE. AGING/TEMP IN CABINETS CITED AS POSS CAUSES. PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION I FEBRUARY 10, 1995 Licensee/Facility: Notification: Public Service Electric & Gas Co. MR Number: 1-95-0021 Salem 2 Date: 02/10/95 Hancocks Bridge,New Jersey FAX BY SRI Dockets: 50-311 PWR/W-4-LP Subject: STATUS OF SALEM SSPS POWER SUPPLY ISSUE Reportable Event Number: 28334 Discussion: During the implementation of a design change that addressed isolation of non-safety inputs from safety-related power, the licensee discovered that removing one power supply from service in a diode auctioneered configuration would trip the other in-service power supply. Detailed troubleshooting of all the SSPS power supplies and the regulation circuits showed that age degradation of filter capacitors, latent manufacturing defects (such as wire stands or "cat whiskers" that had the potential to short circuit boards, and metal vs. phenolic spacers that could cause circuit shorts), and random component failures (such as random transistor burn-out upon breaker closure) were present. In addition, three design issues were uncovered and resolved, including an under capacity resistor (0.5 W vs. 1.0 W) that was incorporated in the circuit design; the determination that the general warning alarm does not indicate system degradation, but rather, catastrophic system failure; and the finding that some breakers in newly acquired power supplies have different nomenclature than the vendor's (Balser) catalog relative to instantaneous trip (though both were later found to refer to a trip time of less than 50 milliseconds). The licensee-determined root cause of the SSOS vulnerability was that appropriate preventive maintenance had not been performed since SSPS installation. All four power supply chassis in Unit 2 SSPS have been changed out with spares from PSE&G and other utilities. Three power supply chassis in Unit 1 SSPS have been interchanged with Unit 2; the fourth chassis is a spare from another utility. All installed power supplies have passed detailed tests developed by the licensee which covered overvoltage, overcurrent, ripple, and voltage regulation. The acceptance criteria for the tests were in consonance with the original Westinghouse speicfications. Regional Action: Region based inspection and assessment of the licensee's design change and root-cause effort, relative to the power supply problems, continues. The region will provide input for generic communications on this matter. Contact: John White (610)337-5114 John Calvert (610)337-5194 PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION III FEBRUARY 10, 1995 Licensee/Facility: Notification: Commonwealth Edison Co. MR Number: 3-95-0013 Byron 2 Date: 02/10/95 Byron,Illinois E-MAIL Dockets: 50-455 PWR/W-4-LP Subject: UNIT 2 REACTOR SHUTDOWN FOR REFUELING OUTAGE Reportable Event Number: N/A Discussion: On February 10, 1995, at 1:37 a.m. (CST), Unit 2 main generator was taken off line, commencing the cycle 5 (B2R05) refueling outage. At 3:00 a.m. (CST) the reactor was shutdown (Mode 3). The outage is scheduled to last 45 days. Major work activities include, main turbine and generator inspections, eddy current inspection of steam generator tubes, 10 year maintenance/inspection of 2A diesel generator, 18 month inspection on 2B diesel generator, motor operator valve inspections, and core refueling. During this outage there are several major modifications to be performed including, core exit thermocouple connector replacement, completion of the process computer upgrade, and phase I of the natural draft cooling tower conversion from cross flow to counter flow. Regional Action: Information Only Contact: LEWIS F. MILLER (708)829-9629 PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION III FEBRUARY 10, 1995 Licensee/Facility: Notification: Agreement State License MR Number: 3-95-0014 Interstate Nuclear Services Date: 02/09/95 Osceola,Iowa TELECON - IOWA DEPT PUBLIC HEALTH License No: 0172-1-20-NL Subject: FIRE IN NUCLEAR LAUNDRY Reportable Event Number: N/A Discussion: Region III received a call from a representative of the Iowa Department of Public Health who reported a fire at Interstate Nuclear Services, a licensed nuclear laundry located in Osceola, Iowa. The fire, which occurred shortly after midnight on February 9, 1995, appears to have begun in a receptacle containing used protective clothing worn by laundry employees. According to the state representative, the fire burned protective clothing and some electrical wiring in the area rendering the facility's ventilation system and air sampling system inoperable. Local fire department personnel responded wearing full SCBAs and quickly extinguished the fire. Smoke from the fire was contained within the building. Radiation measurements in restricted and unrestricted areas indicated no contamination in unexpected locations. No contamination was detected on firefighters and other respondents, on emergency equipment used at the scene, or in areas outside the laundry building. Water from the firefighting efforts is contained in a holding tank which will be sampled prior to water release. The State Fire Marshall is continuing to investigate the cause of the fire. The laundry is shut down until the investigation is complete and the damaged electrical system is repaired. The licensee's radiation safety staff is continuing its radiological assessment of the fire. The Iowa Department of Public Health is monitoring the licensee's assessment and will review the incident during an onsite inspection the week of February 13, 1995. Regional Action: Region III will be notified of the State's findings. The Office of State Programs and NMSS were informed of this incident. Contact: JIM LYNCH (708)829-9818