The regulatory requirement to measure the gamma radiation levels during accident conditions inside a reactor containment building is discussed. Mineral insulated cables for post accident service In this paper it is presented the result of the analysis of the mechanical and electrical properties of several types of mineral insulated cables and also the design, manufacture, sealing, cable ends and their applications to nuclear detectors of various types. The electrical signal, either a pulse or a current, is transmitted along the cable at high temperature, pressure and radiation and should not be influenced by electromagnetic interfereces from the environment. In-core and out-of-core neutron detectors for reactor and safety control systems are usually connected by means of mineral insulated cables. International Nuclear Information System (INIS)Ĭalvo, W.A.P. Development mineral insulated cables for nuclear instrumentation of reactors
