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EN 12300 for final CLEANING of cryo-tested valves

EN 12300 for final CLEANING of cryo-tested valves

EN 12300 for final CLEANING of cryo-tested valves

(OP)
Dear All,
          almost all the Customer Specifications about cryogenic testing of industrial valves assume  the form of an amendment and/or supplement to BS 6364 standard, an old one... but in many case the only one applicable, as of today!
          (See, for reference, also thread408-148535: Alternative to BS 6364 for cryo-testing? and thread774-127182: Cryogenic Test Bench for Valves...).

          Among the many updating and additions, some Customers insert requirements about the cleanliness of the valve after cryo-testing, summoning EN 12300 standard. As far as I know, that applies to "Cryogenic vessels - cleanliness for cryogenic service" and the latest edition is dated September 2006, but I couldn't read it yet...

          Is anybody able to give a quick summary of its contents?   
          In particular, what requirements may or may not be applied to valves?


Many THANKS in advance and regards,           'NGL

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