ISO 21012:2018 specifies design, construction, type and production testing, and marking requirements for non-insulated cryogenic flexible hoses used for the transfer of cryogenic fluids within the following range of operating conditions: - working temperature: from -270 °C to +65 °C; - nominal size (DN): from 10 to 100. End fittings for mounting of any couplings are within the scope of this document, but the couplings are subject to other standards. ISO 21012:2018 is intended that the hose be designed and tested to satisfy the generally accepted rated pressure i.e. at least PR 40. Hoses may be then selected with a PR equal to or greater than the maximum allowable pressure (PS) of the equipment to which it is to be used.
Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
4.1 Design and construction
4.2 Materials
4.3 Cleanliness
4.4 Mechanical properties
5 Hose sample tests
5.1 General
5.2 Non-destructive tests and inspection
5.3 Destructive tests
6 Production testing
6.1 General
6.2 Pressure test
6.3 Leak test
7 Marking
8 Cleaning
9 Periodic examination
10 Test certificate
Annex A Typical hose assembly (informative)
Annex B Rolling bend cycling test for metallic hose assemblies and hose assemblies made of materials with a record of satisfactory use in cryogenic service (informative)
Annex C Rolling bend cycling test for hose assemblies constructed from materials or composites not commonly used in cryogenic service (informative)
Annex D Guidelines for periodic examination of transfilling hoses (informative)
Annex B Rolling bend cycling test for metallic hose assemblies and hose assemblies made of materials with a record of satisfactory use in cryogenic service (informative)
Annex C Rolling bend cycling test for hose assemblies constructed from materials or composites not commonly used in cryogenic service (informative)
Annex D Guidelines for periodic examination of transfilling hoses (informative)
ISO 10806:2003 Pipework -- Fittings for corrugated metal hoses
ISO 21010:2017 Cryogenic vessels -- Gas/material compatibility
ISO 21028-1:2016 Cryogenic vessels -- Toughness requirements for materials at cryogenic temperature -- Part 1: Temperatures below -80 degrees C
ISO 10806:2003 Pipework -- Fittings for corrugated metal hoses
ISO 21010:2017 Cryogenic vessels -- Gas/material compatibility
ISO 21028-1:2016 Cryogenic vessels -- Toughness requirements for materials at cryogenic temperature -- Part 1: Temperatures below -80 degrees C
ISO 23208:2017 Cryogenic vessels -- Cleanliness for cryogenic service
ISO 7369:2004 Pipework -- Metal hoses and hose assemblies -- Vocabulary