GB 15146.10-2001

This standard specifies safety requirements for the use of fixed neutron absorbers (such as neutron poison plates or rods) to control criticality in storage, handling, and processing of fissile materials outside nuclear reactors. It is applied in nuclear fuel cycle facilities, laboratories, and waste management operations where fissile materials like uranium or plutonium are present, ensuring that neutron-absorbing materials are properly designed, installed, and maintained to prevent accidental chain reactions. The standard provides criteria for absorber selection, placement, and performance verification under normal and accident conditions.