PNO-I-86-028, on 860327,shutdown Commenced Due to Continuing Erratic Setpoint Drift of Static O-ring Differential Pressure Switches.Ring Low Level Scram Sensors Will Be Replaced & Minor Changes Made to Connecting Piping

Redirect to:

• PNO-I-86-028, on 860411,controlled Shutdown Initiated to Investigate Three Leaking Valves in LPCI Portion of RHR Sys. During Shutdown,Reactor Scrammed at Low Power When MSIVs Closed.Caused by Faulty Reactor Mode Switch