Kärnenergiteknik

This document specifies the minimum nuclear criticality safety training requirements for Operations Staff, Operations Supervisors, and Management. The requirement for the training of Operations Staff, Operations Supervisors and Management is identified in ISO–1709.

This document is applicable to areas, processes or facilities containing quantities of fissile nuclides in which nuclear criticality safety is required to be established, except for nuclear reactors where the core is fully loaded.

This document is not applicable to the transport of fissile materials outside the boundaries of nuclear establishments, nor for the response to a criticality accident. Training for response to a criticality accident is considered in ISO-11320.

This document specifies requirements for the ice plug technique with liquid nitrogen or dry ice as refrigerant (cryogenic medium) on metal pipes of nuclear power plants. The freezing liquid can be water or water mixture (e.g. boric acid mixture).

This document specifies technical requirements of ice plug generation, formation judgment and removal, measures before, during and after ice plugging and requirements for personnel and non-destructive testing.

This document is applicable for maintenance work, modification work and test inspections work when no other locking opportunity than ice plugging is available.

The application of the ice plug isolation technique is principally not allowed on cladded pipes or pipes with internal coatings. The application for pressure test is not in the scope of this document and should be qualified separate.