A New Startup Range Neutron Monitor

In the early 1960´ s General Electric began producing a line of radiation monitoring equipment known as Integrated Nuclear Measurement and Control (INMAC). Recent advances in technology, especially in the area of microprocessors, now allows improved performance in the same physical package size. This paper describes a new family of radiation monitoring equipment known as Nuclear Measurement Analysis and Control (NUMAC). In these instruments all essential logic and timing are implemented through the use of Microcomputer cards. In order to provide a high assurance of operability, an optional microprocessor controlled Self Test System may be incorporated. The Self Test system continuously checks operability of all safety related functions. Other design features include highly modularized construction, an enhanced operator interface and upwards compatibility with present and future General Electric instrumentation and control products. Delivery of the NUMAC line of instruments is scheduled for the third quarter of 1984. This paper describes the requirements and design of the NUMAC line with emphasis on the Source Range Monitor (SRM).