IEC 61468 pdf download Nuclear power plants – In-core instrumentation – Characteristics and test methods of self-powered neutron detectors 1Scope and object This International Standard applies to in-core neutron detectors and instrumentation which aredesigned for purposes important to safety: protection, control and information. lt is restricted tocharacteristics and test methods for self-powered neutron detectors (SPNDs).Self-poweredneutron detectors can be used for...