Headquarters Daily Report DECEMBER 01, 1997 *************************************************************************** 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 DEC. 01, 1997 Licensee/Facility: Notification: Part 21 Database MR Number: H-97-0147 General Electric Date: 12/01/97 Subject: Part 21 - Discrepancy between turbine control valve closing rate design requirement and system vendor manual Discussion: VENDOR: General Electric PT21 FILE NO: 97-83-0 DATE OF DOCUMENT: 10/29/97 ACCESSION NUMBER: 9711030239 SOURCE DOCUMENT: LETTER REVIEWER: PECB, J. Carter NEW ISSUE. The Clinton licensee reports a discrepancy between the GE design requirement and the vendor manual for the closing rate of the turbine control valves. _ HEADQUARTERS MORNING REPORT PAGE 2 DECEMBER 1, 1997 Licensee/Facility: Notification: Part 21 Database MR Number: H-97-0148 Limitorque Date: 12/01/97 Subject: Part 21 - Defective T-drains on environmentally qualified motor operated valves Discussion: VENDOR: Limitorque PT21 FILE NO: 97-84-0 DATE OF DOCUMENT: 11/17/97 ACCESSION NUMBER: SOURCE DOCUMENT: EN 33273 REVIEWER: PECB, N. Fields NEW ISSUE. The Indian Pt. 2 licensee reports defective T-drains on environmentally qualified motor operated valves. The T-drains were not drilled through and would act as pipe plugs rather than pipe drains. _ REGION IV MORNING REPORT PAGE 3 DECEMBER 1, 1997 Licensee/Facility: Notification: Omaha Public Power District MR Number: 4-97-0091 Ft Calhoun 1 Date: 12/01/97 Fort Calhoun,Nebraska SRI via telephone Dockets: 50-285 PWR/CE Subject: FIRE IN RELAY IN PRESSURIZER LEVEL CIRCUITRY Discussion: At approximately 5 a.m. (CST) on November 29, operators in the control room detected an odor similar to an electrical component overheating. During the subsequent investigation, at approximately 5:15 a.m., Relay AI4A-K11, inside control room Panel CB1,2,3 caught fire. It was extinguished within one minute with a hand-held fire extinguisher. Failure of this relay caused pressurizer level controller Channel X to fail low and resulted in the isolation of the letdown system. Operators selected the alternate channel of level control and restored letdown to service. The relay was subsequently replaced and the pressurizer level control system was restored to normal operation. The failed relay was a continuously energized, 120 VAC, General Electric relay, Model CR120A. The licensee is evaluating the cause of the relay failure and any generic implications. Regional Action: The resident inspectors are monitoring the licensee's followup actions. Contact: Wayne Walker (402)426-9611 William Johnson (817)860-8148 _ REGION IV MORNING REPORT PAGE 4 DECEMBER 1, 1997 Licensee/Facility: Notification: Wolf Creek Nuclear Oper. Corp. MR Number: 4-97-0092 Wolf Creek 1 Date: 12/01/97 Burlington,Kansas Senior Resident Inspector Dockets: 50-482 PWR/W-4-LP Subject: RESTART FROM REFUELING OUTAGE Reportable Event Number: 33325 Discussion: At 5:39 a.m. (CST), on December 1, 1997, the main generator output breakers were closed, ending the ninth refueling outage for Wolf Creek Generating Station. Major work accomplished during the outage included upgrade of the fuel transfer mechanism; seal replacement on a reactor coolant pump; replacement of the motor, pump, and seal on a second reactor coolant pump; overhaul of the turbine-driven auxiliary feedwater pump; inspection of Steam Generators A and D; refurbishment of a low pressure turbine and a main feedwater pump; and integrated safeguards testing. The reactor was taken critical at 10:17 p.m. on November 27 but was returned to Mode 3 at 2:45 a.m. on November 28 due to noise on a channel of the reactivity computer during physics testing. The reactor was taken critical again at 5:18 a.m. on November 28. At 2:37 p.m. on November 29, a reactor trip occurred from approximately 7 percent reactor power when an intermediate range channel spiked high (Event Notification 33325). The channel spiking was determined to be the result of the detector compensation voltage being set high in the normal range, causing unexpected spikes in detector output. The voltage was adjusted downward and the reactor was restarted at 6:22 p.m. on November 30. Regional Action: The resident inspectors are monitoring the licensee's followup activities, including the setting and adjusting of intermediate range compensating voltage. Contact: J. F. Ringwald (316)364-8653 W. D. Johnson (817)860-8148 _