A Microprocessor Based Thermocouple/Core Cooling Monitor for Pressurized Water Reactors

A Thermocouple/Core Cooling Monitor is described. The system provides a nuclear reactor operator with rapidly available, readily understandable data concerning the adequacy of cooling of the reactor core. The functions of the instrument are briefly described and inadequacies of earlier in-core thermocouple data presentation techniques are reviewed. Descriptions of the thermocouples, the reference junction boxes, and the data processing hardware and software are given. Operational experience to date is summarized.