1.1 This European Standard specifies the requirements for material, design, manufacturing, testing and
documentation for stationary piping intended for use in refrigerating systems, heat pumps and secondary
cooling and heating systems. These refrigerating systems and heat pump systems are referenced in this
standard as refrigerating systems as defined in EN 378-1.
1.2 This European Standard applies to piping including welded or brazed attachments up to and including
the flanges, screwed, welded or brazed connectors or to the edge to be welded or brazed at the first
circumferential joint connecting piping or other elements.
1.3 This European Standard applies to the selection, application and installation of safety accessories
intended to protect the piping during the various phases of the refrigeration cycle.
1.4 This European Standard applies to the following piping:
heat exchanger consisting of piping for the purpose of cooling or heating air where piping aspects are
predominant;
piping incorporated into an assembly (e.g. self contained system, condensing unit);
field erected piping.
1.5 This European Standard applies to piping with an internal pressure down to – 1 bar, to account for the
evacuation of the piping prior to charging with refrigerant.
1.6 This European Standard applies to both the mechanical loading conditions and thermal conditions as
defined in EN 13480-3 associated with refrigerating systems. It applies to piping subject to the maximum
allowable temperatures for which nominal design stresses for materials are derived using EN 14276-1 or as
specified in this European Standard. In addition piping designed to this standard needs to have a maximum
design temperature not exceeding 200 °C and a maximum design pressure not exceeding 64 bar. Outside of
these limits, EN 13480 should be used for the design construction and inspection of the piping. Under these
circumstances the unique nature of a refrigerating plant, as indicated in the introduction of EN 14276-1, needs
also to be taken into account.
1.7 This European Standard applies to piping where the main pressure bearing parts are manufactured
from metallic ductile materials as defined in Clause 4 and in EN 14276-1.
EN 14276-2:2007 Referenced Document
EN 10204:2004 Metallic products - Types of inspection documents*， 2024-04-19 Update
EN 10246-9 Non-Destructive Testing of Steel Tubes - Part 9: Automatic Ultrasonic Testing of the Weld Seam of Submerged Arc Welded Steel Tubes for the Detection of Longitudinal and/or Transverse Imperfections
EN 1289:1998 Non-destructive testing of welds Penetrant testing of welds Acceptance levels Includes amendments A1: 2002 and A2:2003
EN 1435:1997 Non-destructive testing of welds Radiographic testing of welded joints Includes amendments A1:2002 and A2:2003
EN 1653:1997 Copper and copper alloys - Plate, sheet and circles for boilers, pressure vessels and hot water storage units
EN 1712:1997 Non-destructive testing of welds Ultrasonic testing of welded joints Acceptance levels Includes Amendments A1:2002 and A2:2004
EN 1714:1997 Non-destructive testing of welds Ultrasonic testing of welded joints Incorporates Amendments A1:2002 and A2:2003
EN 378-1:2000 Refrigerating Systems and Heat Pumps - Safety and Environmental Requirements - Part 1: Basic Requirements@ Definitions@ Classification and Selection Criteria
EN 378-2:2000 Refrigerating Systems and Heat Pumps - Safety and Environmental Requirements - Part 2: Design, Construction, Testing, Marking and Documentation
EN 378-3:2000 Refrigerating Systems and Heat Pumps - Safety and Environmental Requirements - Part 3: Installation Site and Personal Protection
EN 378-4:2000 Refrigerating Systems and Heat Pumps - Safety and Environmental Requirements - Part 4: Operation@ Maintenance@ Repair and Recovery
EN 571-1:1997 Non-Destructive Testing - Penetrant Testing - Part 1: General Principles
EN 583-4:2002 Non-destructive testing Ultrasonic examination Part 4: Examination for discontinuities perpendicular to the surface Includes Amendment A1:2003
EN 764-1:2004 Pressure equipment - Part 1: Terminology - Pressure, temperature, volume, nominal size Supersedes EN 764:1994
EN 970:1997 Non-Destructive Examination of Fusion Welds - Visual Examination
EN 14276-2:2007 history
2020EN 14276-2:2020 Pressure equipment for refrigerating systems and heat pumps - Part 2: Piping - General requirements
2011EN 14276-2:2007+A1:2011 Pressure equipment for refrigerating systems and heat pumps - Part 2: Piping - General requirements
2007EN 14276-2:2007 Pressure equipment for refrigerating systems and heat pumps - Part 2: Piping - General requirements