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ISO 23467

Ice plug isolation of piping in nuclear power plant

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Organization: ISO
Publication Date: 1 November 2020
Status: active
Page Count: 22
ICS Code (Nuclear power plants. Safety): 27.120.20
scope:

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 nondestructive testing.

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 will be qualified separately.

Document History

ISO 23467
November 1, 2020
Ice plug isolation of piping in nuclear power plant
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...

References

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