Oak Ridge Research Reactor quarterly report, April, May, and June 1984

The ORR operated at an average power level of 29.9 MW for 83.3% of the time during this period. The reactor was shut down on five occasions, one of which was unscheduled. Reactor downtime needed for refueling and checks was normal. The reactor remained available for operation 93.4% of the time. Maintenance activities, both mechanical and instrument, were essentially routine in nature. Special tests completed during the quarter included results of flux measurements in the HFED experiment, cycles 167-D and 168-A, and results of reactivity worth measurements of MFE-4A Hf core sleeve as installed in core position E-3. In-service inspection completed during the quarter included the internal and external inspection of the pool heat exchanger