ISO 14903:2017
Refrigerating systems and heat pumps - Qualification of tightness of components and joints

Standard No.

ISO 14903:2017

Release Date

2017

Published By

International Organization for Standardization (ISO)

Latest

ISO 14903:2017

Scope

This document provides the qualification procedure for type approval of the tightness of hermetically sealed and closed components, joints and parts used in refrigerating systems and heat pumps as described in relevant parts of ISO 5149. The sealed and closed components, joints and parts concerned are, in particular, fittings, bursting discs, flanged or fitted assemblies. The tightness of flexible piping made from non-metallic materials is dealt with in ISO 13971. Metal flexible piping are covered by this document. The requirements contained in this document are applicable to joints of maximum DN 50 and components of internal volume of maximum 5 l and maximum weight of 50 kg. This document is intended to characterize 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 recognized as hermetically sealed joints.

ISO 14903:2017 Referenced Document

• EN 12263:1998 Refrigerating systems and heat pumps - Safety switching devices for limiting the pressure - Requirements and tests
• EN 12693:2008 Refrigerating systems and heat pumps - Safety and environmental requirements - Positive displacement refrigerant compressors
• EN 13134:2000 Brazing - Procedure approval
• EN 13185:2001 Non-destructive testing - Leak testing - Tracer gas method
• EN 14276-1:2006 Pressure equipment for refrigerating systems and heat pumps - Part 1: Vessels - General requirements (Incorporates Amendment A1: 2011)
• EN 14276-2:2007 Pressure equipment for refrigerating systems and heat pumps - Part 2: Piping - General requirements
• EN 1593:1999 Non-destructive testing - Leak testing - Bubble emission techniques
• EN 1779:1999 Non-destructive testing - Leak testing - Criteria for method and technique selection
• EN 378-1:2016 Refrigerating systems and heat pumps - Safety and environmental requirements Part 1: Basic requirements@ definitions@ classification and selection criteria
• EN 378-2:2016 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 2: Design@ construction@ testing@ marking and documentation
• EN 378-3:2016 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 3: Installation site and personal protection
• EN 378-4:2016 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation@ maintenance@ repair and recovery
• IEC 60068-2-64:2008 Environmental testing - Part 2-64: Tests - Test Fh: Vibration, broad-band random and guidance
• IEC 60068-2-6:2007 Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal)
• IEC 60335-2-34:2012 Household and similar electrical appliances - Safety - Part 2-34: Particular requirements for motor-compressors
• ISO 13971:2012 Refrigeration systems and heat pumps - Flexible pipe elements, vibration isolators, expansion joints and non-metallic tubes - Requirements and classification
• ISO 175:2010 Plastics - Methods of test for the determination of the effects of immersion in liquid chemicals
• ISO 1817:2015 "Rubber, vulcanized or thermoplastic - Determination of the effect of liquids"
• ISO 18517:2015 Rubber, vulcanized or thermoplastic - Hardness testing - Introduction and guide
• ISO 48:2010 Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD)
• ISO 5149-1:2014 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 1: Definitions, classification and selection criteria
• ISO 5149-2:2014 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 2: Design, construction, testing, marking and documentation
• ISO 5149-3:2014 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 3: Installation site
• ISO 5149-4:2014 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation, maintenance, repair and recovery
• ISO 7619-1:2010 Rubber, vulcanized or thermoplastic - Determination of indentation hardness - Part 1: Durometer method (Shore hardness)

ISO 14903:2017 history

• 2017 ISO 14903:2017 Refrigerating systems and heat pumps - Qualification of tightness of components and joints
• 2012 ISO 14903:2012 Refrigerating systems and heat pumps - Qualification of tightness of components and joints