The Control of Canadian Nuclear Reactors: An Account of Its Unique Features

Abstract

A truly Canadian approach to reactor control began to take shape in 1953 influenced, in no small way, by the NRX accident the previous December. The approach was dominated by safety, serviceability, and reliability concerns which along with many inherent characteristics of the heavy-water-moderated high-flux reactor lead to a series of unique developments emphasizing safety and automation. Multichannel control systems were introduced. Relatively rapid startup became a reality. New ways to control reactivity were explored. New types of neutron sensors became part of control system design. And finally the digital computer appeared. Its application was particularly unique.