scope:

This document is intended to describe the qualification procedure of the tightness of hermetically sealed and closed components, joints and parts used in the refrigerating industry and fixed air conditioning. The sealed and closed components, joints and parts concerned are, in particular, the fittings, the bursting discs, the flanged or fitted assemblies. The tightness of flexible piping made from non metallic materials is dealt with in prEN 1736. Metal flexible piping are covered by this standard.
This document is intended to characterise their tightness, stresses met during their operations, following the fitting procedure specified by the manufacturer, and to specify the minimal list of necessary information to be provided by the supplier of a component to the person in charge of carrying out this procedure.
It specifies the level of tightness of the component, as a whole, and its assembly as specified by its manufacturer.
It applies to the hermetically sealed and closed components, joints and parts used in the refrigerating installations, including those with seals, whatever their material and their design are.
This document specifies additional requirements for mechanical joints that can be recognised as hermetically sealed joints.