IEC 60568:2006 pertains to on-line in-core neutron detectors, along with their associated components and instrumentation, which are essential for reactor safety, including protection, information, or control purposes. The types of detectors commonly employed include direct current ionization chambers, fission ion chambers, and self-powered neutron detectors.
This standard offers guidance for designing in-core instrumentation aimed at measuring neutron fluence rates in thermal neutron reactors intended for power generation. The primary focus of this standard is on the general design considerations of on-line systems. For principles related to overall system design and neutron flux measurement, refer to IEC 61513.