ISO 21012:2006 pdf download.Cryogenic vessels - Hoses.
3.6
DN (nominal size)
alphanumeric desagnation of size for components of a papework system, is used for reference purposes
NOTE It compnses the letters ON foflowed by a dimensionless whole number that Is lndir.c5y rotated to the physicot sAze. I, millwnetres, o( the bore or outside cameter of the end connections.
(ISO 6708:1995, definition 21]
3,7
rated pressure
PR
of a hose: lowest Maximum Allowable working Pressure (MAWP) of any component of the hose at 20 C
rated minimum temperature
lowest temperature to which the hose assembly is rated by the manufacturer
3.9
cyclic life
minmiixn number of complete cycles which, at the test conditions, the hose assembly is designed to withstand without failure
4 General requirements
4.1 Design and construction
A hose is typically made from corrugated metal, from stñp steel. The corrugation may be parallel or helical.
If elastomers or composites are used, additional requirements shall be applied in accordance with 5.3.2.2.
A braid is commonly fitted over the hose, This generally consists of woven wire in one or two layers in stainless steel, or a high strength copper alloy. It may have a cover that shall be compatible with the surroundings and with the conveyed fluid.
End fittings shall be designed as a ngid seal to the ends of a hose to ensure:
— abghtflttothehose;
— a strong joint between the braid, hose and end fitting to stabilize the hose against elongation at rated pressure,
Fittings for corrugated metal hose assemblies shall conform to ISO 10806. An area for marking shall be provided on one of the end fittings.
All joming methods used in corrugated hose assemblies shall be qualified. Manual welds shall be in accordance with applicable standards.
DN (nominal size)
alphanumeric desagnation of size for components of a papework system, is used for reference purposes
NOTE It compnses the letters ON foflowed by a dimensionless whole number that Is lndir.c5y rotated to the physicot sAze. I, millwnetres, o( the bore or outside cameter of the end connections.
(ISO 6708:1995, definition 21]
3,7
rated pressure
PR
of a hose: lowest Maximum Allowable working Pressure (MAWP) of any component of the hose at 20 C
rated minimum temperature
lowest temperature to which the hose assembly is rated by the manufacturer
3.9
cyclic life
minmiixn number of complete cycles which, at the test conditions, the hose assembly is designed to withstand without failure
4 General requirements
4.1 Design and construction
A hose is typically made from corrugated metal, from stñp steel. The corrugation may be parallel or helical.
If elastomers or composites are used, additional requirements shall be applied in accordance with 5.3.2.2.
A braid is commonly fitted over the hose, This generally consists of woven wire in one or two layers in stainless steel, or a high strength copper alloy. It may have a cover that shall be compatible with the surroundings and with the conveyed fluid.
End fittings shall be designed as a ngid seal to the ends of a hose to ensure:
— abghtflttothehose;
— a strong joint between the braid, hose and end fitting to stabilize the hose against elongation at rated pressure,
Fittings for corrugated metal hose assemblies shall conform to ISO 10806. An area for marking shall be provided on one of the end fittings.
All joming methods used in corrugated hose assemblies shall be qualified. Manual welds shall be in accordance with applicable standards.
