IEC 60231D:1975

Applicable more particularly to instrumentation for pressurized water reactors. Deals in particular with measurements of neutron fluence rate (flux).
The IEC 60231 series of standards is no longer up-to-date and will not be revised by IEC. The standards are maintained for the time being for bibliographical purposes and because they were used in the past for the design of nuclear power plants which are still in operation.