Self-Limiting Power Excursion Characteristics of Light Water Reactor, (III)Instrumentation for HTR-Pulse Operation

摘要

The Hitachi Training Reactor (HTR) provided with pulse operation capability was utilized for an experimental study on the excursion characteristics of light water reactors. Measurements were performed on reactor power, reactor period, released energy, fuel temperature, fuel cladding strain, pressure in water channel and water activities. The reliability of the instruments and devices employed was confirmed to be satisfactory through pulse operation tests repeated 300 times, with inserted reactivities up to 1.50 $, with reactor periods down to 15 msec, and hot spot fuel temperatures up to 1, 300°C. A description is also given of the instrumentation for the measure-ments and reactor operation.