scope:

This part of ISO 21009 specifies operational requirements forstatic vacuum insulated vessels designed for a maximum allowablepressure of more than 50 kPa (0,5 bar). It may also be used as aguideline for vessels designed for a maximum allowable pressure ofless than 50 kPa (0,5 bar). This part of ISO 21009 applies tovessels designed for cryogenic fluids specified in ISO 21009-1.Static cryogenic vessels are often partly equipped by themanufacturer, but may be installed or reinstalled by another party,such as the operator, user or owner. NOTE 1 For the installation ofthese vessels, additional requirements can apply; these are definedin specific regulations. NOTE 2 Some requirements of this standardcan be covered by local regulations, e.g. safety distances,occupational safety and health. Where there is a conflict betweenthe requirements of this International Standard and any applicablelocal regulation, the local regulation always takes precedence.