Headquarters Daily Report OCTOBER 22, 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 - REGION IV OCTOBER 22, 1997 Licensee/Facility: Notification: Entergy Operations, Inc. MR Number: 4-97-0081 River Bend 1 Date: 10/22/97 St Francisville,Louisiana Acting Senior Resident Inspector Dockets: 50-458 BWR/GE-6 Subject: STARTUP FROM REFUELING OUTAGE Discussion: At 6:33 p.m. on October 21, 1997, the licensee synchronized the main generator to the grid, signifying completion of Refueling Outage 7 (which started on September 12, 1997). In addition to refueling activities, major work included the installation of redesigned emergency core cooling suction strainers (pursuant to NRC Bulletin 93-02) and initiation and testing of the alternate decay heat removal system. The alternate decay heat removal system is not safety related and can: (1) remove decay heat from the reactor coolant system during shutdown periods; (2) cool the suppression pool; and (3) filter and demineralize suppression pool water. Regional Action: The resident inspectors observed selected startup activities. Contact: Elmo E. Collins (817)860-8219 Mike Shannon (817)860-8218 _ REGION IV MORNING REPORT PAGE 2 OCTOBER 22, 1997 Licensee/Facility: Notification: Entergy Operations, Inc. MR Number: 4-97-0080 Arkansas Nuclear 1 Date: 10/22/97 Russelville,Arkansas Acting Senior Resident Inspector Dockets: 50-313 PWR/B&W-L-LP Subject: MAIN FEEDWATER PUMP TRIP Discussion: At approximately 7:02 p.m. on 10/21/97, Unit 1 was operating at 100 percent power when a trouble alarm was received for Main Feedwater Pump B. The Main Feedwater Pump B trip light was illuminated; however, the operators noted normal feedwater pump speed indication and a feedwater flow indication of zero. These inconsistencies led the operators to initiate manual actions because an automatic runback had failed to occur. These actions ensured the pump was tripped and the feedwater crossover valve and pressurizer spray valves were open. Following a pump trip at 100 percent power, the integrated control system (ICS) is designed to run reactor power back to 40 percent to prevent a reactor trip. The failure of the ICS runback was traced to a faulted relay, which has subsequently been replaced. This also caused the erroneous pump speed indication. The licensee is currently testing the B Main Feedwater Pump. Due to the mismatch between primary and secondary power, ICS cross-limits were reached and the trackdown function began to reduce reactor power. Approximately 55 percent power was reached by 7:07 p.m.; operators further reduced power to 40 percent by 7:40 p.m. Regional Action: Followup by resident inspectors. Contact: Jim Melfi (501)968-3290 Elmo Collins (817)860-8291 _