Information Notice No. 83-42: Reactor Mode Switch Malfunctions
… is required at this time. Description of Circumstances: Susquehanna 1 Events: On March 22, 1983, Susquehanna Unit 1 … position, the group 1 isolation signal from low main steam line pressure (850 psig) should be bypassed. When the … in imprecise operation of the cam followers. General Electric was contacted and confirmed that problems existed …