Automatic Digital Recording Of Hanford Reactor Outlet Water Temperatures

Instrumentation has been developed which automatically senses thermocouple voltages sequentially at a rate of three per second and records temperatures in digital form as received from an analog to digital converter. The temperatures are typed on a reactor face map and simultaneously coded into perforated tape; data from the coded tape are then transcribed on IBM cards in a form convenient for subsequent calculations. The nearly continuous display of tube power generation has given invaluable assistance in maintaining optimum pile power distributions and the coded data make possible many detailed studies of reactor dynamics, control, and reactivity balances.