What is ISO 22946 about?
ISO 22946 provides specific requirements and guidance on the nuclear criticality safety of waste containing fissile nuclides, generated during normal operations. This document is intended to be used alongside and in addition to ISO 1709 .
ISO 22946 applies specifically to the nuclear criticality safety of solid nuclear wastes. It also applies to residual quantities of liquids and/or slurries that are either intimately associated with the solid nuclear waste materials or arise as a result of processing or handling the waste.
ISO 22946 does not apply to bulk or process liquids (including higher concentration process solutions) or irradiated or un-irradiated fuel elements.
NOTE The term fuel element is sometimes applied to fuel assembly, fuel bundle, fuel cluster, fuel rod, fuel plate, etc. All these terms are based on one or more fuel elements. A cylindrical fuel rod (sometimes referred to as a fuel pin) for a light-water reactor is an example of a fuel element.
All stages of the waste life cycle are within the scope of the document. ISO 22946 can...