CEN/TC 182/WG 2 - Design and testing

This document specifies safety requirements, certain functional requirements, and marking of valves and other components with similar bodies, hereinafter called valves, for use in refrigerating systems including heat pumps.
This document includes requirements for valves with extension pipes.
This document describes the procedure to be followed when designing valve parts subjected to pressure as well as the criteria to be used in the selection of materials.
This document describes methods by which reduced impact values at low temperatures may be taken into account in a safe manner.
This document applies to the design of bodies and bonnets for pressure relief devices, including bursting disc devices, with respect to pressure containment but it does not apply to any other aspects of the design or application of pressure relief devices.
In addition, this document is applicable to valves with a maximum operating temperature not exceeding 200 °C and a maximum allowable pressure not exceeding 160 bar[1].
[1] 1 bar = 0,1 MPa.

1.1   This European Standard describes the calculation of mass flow for sizing pressure relief devices for components of refrigerating systems.
NOTE   The term "refrigerating system" used in this European Standard includes heat pumps.
1.2   This European Standard describes the calculation of discharge capacities for pressure relief valves and other pressure relief devices in refrigerating systems including the necessary data for sizing these when relieving to atmosphere or to components within the system at lower pressure.
1.3   This European Standard specifies the requirements for selection of pressure relief devices to prevent excessive pressure due to internal and external heat sources, the sources of increasing pressure (e.g. compressor, heaters, etc.) and thermal expansion of trapped liquid.
1.4   This European Standard describes the calculation of the pressure loss in the upstream and downstream line of pressure relief valves and other pressure relief devices and includes the necessary data.
1.5   This European Standard refers to other relevant standards in Clause 5.

This standard applies to positive displacement refrigerant compressors for stationary and mobile refrigerating systems and heat pumps defined in 3.1, hereafter called compressors.
It applies for compressors used in commercial and industrial appliances and with electrical energy supply including integral motors, up to 1 000 VAC and 1 500 VDC.
It applies to open drive, semi hermetic and hermetic motor compressors, which contain a positive compression function
This standard is not applicable to:
-   compressors used in household appliance for which EN 60335-2-34 applies;
-   compressors using water or air as refrigerant.
This standard does not deal with requirements for vibration and noise.
NOTE   Noise emission depends on the complete installation of the built-in compressors and the corresponding operating conditions.
For semi-hermetic and open drive compressors which include moving parts and for which the external envelope is primarily designed for mechanical loads, thermal loads (to limit the possible deformation due to temperature), stiffness of the structure (external mechanical loads and weight of the equipment), taking into account established safe industrial practice, it is considered that pressure is not a significant design factor.
Attached parts covering other functions e.g. oil separators, oil coolers, suction accumulators shall comply to EN 14276-1 or EN 13445-6 (cast iron) or prEN 13445-8:2003 (aluminium) or showing compliance to the relevant European requirements. This applies also to shells for hermetic compressors either welded or with any kind of permanent joint.
Requirements for compressors used in explosive atmospheres are not covered by this standard.
NOTE   For further guidance see EN 13463-1.
This standard deals with all significant hazards, hazardous situations and events relevant to compressors, when they are used as indented and under conditions for misuse which are reasonably foreseeable by the manufacturer (see Clause 4).
This standard

This document describes the calculation of:
—     mass flow for sizing pressure relief devices for parts of refrigerating systems;
—     discharge capacities for pressure relief valves and other pressure relief devices in refrigerating systems including the necessary data for sizing these when relieving to atmosphere or to part of the refrigerating system at lower pressure;
—     the pressure loss in the inlet and outlet lines of pressure relief valves and other pressure relief devices and includes the necessary data.
This document specifies the requirements for selection of pressure relief devices to prevent excessive pressure due to internal and external heat sources, the sources of increasing pressure (e.g. compressor, heaters, etc.) and thermal expansion of trapped liquid.
NOTE            The term "refrigerating system" used in this document includes heat pumps.

This European Standard applies to positive displacement refrigerant compressors for stationary and mobile refrigerating systems and heat pumps defined in 3.1, hereafter called compressors.
It applies for compressors used in commercial and industrial appliances and with electrical energy supply including integral motors, up to 1 000 VAC and 1 500 VDC.
It applies to open drive, semi hermetic and hermetic motor compressors, which contain a positive compression function.
This standard is not applicable to:
-   compressors used in household appliance for which EN 60335 2 34 applies;
-   compressors using water or air as refrigerant.
This European Standard does not deal with requirements for vibration and noise.
NOTE 1   Compressors for automotive comfort air conditioning systems can be developed according e.g. SAE J 639.
NOTE 2   Noise emission depends on the complete installation of the built-in compressors and the corresponding operating conditions.
For semi-hermetic and open drive compressors which include moving parts and for which the external envelope is primarily designed for mechanical loads, thermal loads (to limit the possible deformation due to temperature), stiffness of the structure (external mechanical loads and weight of the equipment), taking into account established safe industrial practice, it is considered that pressure is not a significant design factor.
Attached parts covering other functions e.g. oil separators, oil coolers, suction accumulators should comply to EN 14276 1 or EN 13445 6 (cast iron) or EN 13445 8 (aluminium) or showing compliance to the relevant European requirements. This applies also to shells for hermetic compressors either welded or with any kind of permanent joint.
Requirements for compressors used in explosive atmospheres are not covered by this standard.
NOTE 3   For further guidance see EN 13463-1.
This European Standard deals with all significant hazards, hazardous situations and events relevant to compressors, when they are used as intended and under conditions for misuse which are reasonably foreseeable by the manufacturer (see Clause 4).
This European Standard specifies safety requirements for the design, construction, manufacture and testing, documentation and marking of compressors, including integral accessories, e.g. shut-off valve, if necessary.
The requirements in this standard take account of the intended use, as defined in EN ISO 12100:2010, 3.12.
This standard relates to the compressor itself which is to be incorporated in a refrigerating system.
This standard is not applicable to compressors as defined in the scope which are manufactured before the date of publication as EN.

This European Standard applies to positive displacement refrigerant compressors for stationary and mobile refrigerating systems and heat pumps defined in 3.1, hereafter called compressors.
It applies for compressors used in commercial and industrial appliances and with electrical energy supply including integral motors, up to 1 000 VAC and 1 500 VDC.
It applies to open drive, semi hermetic and hermetic motor compressors, which contain a positive compression function.
This standard is not applicable to:
-   compressors used in household appliance for which EN 60335 2 34 applies;
-   compressors using water or air as refrigerant.
This European Standard does not deal with requirements for vibration and noise.
NOTE 1   Compressors for automotive comfort air conditioning systems can be developed according e.g. SAE J 639.
NOTE 2   Noise emission depends on the complete installation of the built-in compressors and the corresponding operating conditions.
For semi-hermetic and open drive compressors which include moving parts and for which the external envelope is primarily designed for mechanical loads, thermal loads (to limit the possible deformation due to temperature), stiffness of the structure (external mechanical loads and weight of the equipment), taking into account established safe industrial practice, it is considered that pressure is not a significant design factor.
Attached parts covering other functions e.g. oil separators, oil coolers, suction accumulators should comply to EN 14276 1 or EN 13445 6 (cast iron) or EN 13445 8 (aluminium) or showing compliance to the relevant European requirements. This applies also to shells for hermetic compressors either welded or with any kind of permanent joint.
Requirements for compressors used in explosive atmospheres are not covered by this standard.
NOTE 3   For further guidance see EN 13463-1.
This European Standard deals with all significant hazards, hazardous situations and events relevant to compressors, when they are used as intended and under conditions for misuse which are reasonably foreseeable by the manufacturer (see Clause 4).
This European Standard specifies safety requirements for the design, construction, manufacture and testing, documentation and marking of compressors, including integral accessories, e.g. shut-off valve, if necessary.
The requirements in this standard take account of the intended use, as defined in EN ISO 12100:2010, 3.12.
This standard relates to the compressor itself which is to be incorporated in a refrigerating system.
This standard is not applicable to compressors as defined in the scope which are manufactured before the date of publication as EN.

1.1   This European Standard describes the calculation of mass flow for sizing pressure relief devices for components of refrigerating systems.
NOTE   The term "refrigerating system" used in this European Standard includes heat pumps.
1.2   This European Standard describes the calculation of discharge capacities for pressure relief valves and other pressure relief devices in refrigerating systems including the necessary data for sizing these when relieving to atmosphere or to components within the system at lower pressure.
1.3   This European Standard specifies the requirements for selection of pressure relief devices to prevent excessive pressure due to internal and external heat sources, the sources of increasing pressure (e.g. compressor, heaters, etc.) and thermal expansion of trapped liquid.
1.4   This European Standard describes the calculation of the pressure loss in the upstream and downstream line of pressure relief valves and other pressure relief devices and includes the necessary data.
1.5   This European Standard refers to other relevant standards in Clause 5.

This European Standard specifies safety requirements, safety factors, test methods, test pressures and marking of liquid level indicating devices, referred to throughout this standard as level indicators, for use in refrigerating systems and heat pumps.
It applies to devices connected to refrigerant vessels (e.g. on high-pressure liquid receivers, intercoolers and low-pressure receivers) and to devices connected to other parts of a refrigerating system (e.g. oil-level sight glasses on a compressor).
This European Standard applies to those types of level indicators that are direct and indirect reading devices (e.g. sight glasses, frosting tubes), and includes electrical and pneumatic indicators.
This European Standard describes the procedure to be followed when designing (by calculation or by an experimental design method) level indicator parts subjected to pressure as well as the criteria to be used for the selection of materials.
This European Standard applies to the design of level indicators with respect to pressure containment and describes methods by which the reduced impact values at lower temperatures may be taken into account in a safe manner.
It also gives guidance on some aspects of application and installation.

This European Standard specifies safety requirements, safety factors, test methods, test pressures used and marking of refrigerating valves and other components with similar bodies, hereinafter called valves, for use in refrigerating systems.
It describes the procedure to be followed when designing (by calculation or by an experimental design method) valve parts subjected to pressure as well as the criteria to be used in the selection of materials.
The standard describes methods by which reduced impact values at low temperatures may be taken into account in a safe manner.
This standard applies to the design of bodies and bonnets for pressure relief devices, including bursting disc devices, with respect to pressure containment but it does not apply to any other aspects of the design or application of pressure relief devices.

1.1   This European Standard describes the calculation of mass flow for sizing pressure relief devices for components of refrigerating systems.
NOTE   The term "refrigerating system" used in this European Standard includes heat pumps.
1.2   This European Standard describes the calculation of discharge capacities for pressure relief valves and other pressure relief devices in refrigerating systems including the necessary data for sizing these when relieving to atmosphere or to components within the system at lower pressure.
1.3   This European Standard specifies the requirements for selection of pressure relief devices to prevent excessive pressure due to internal and external heat sources, the sources of increasing pressure (e.g. compressor, heaters, etc.) and thermal expansion of trapped liquid.
1.4   This European Standard describes the calculation of the pressure loss in the upstream and downstream line of pressure relief valves and other pressure relief devices and includes the necessary data.
1.5   This European Standard refers to other relevant standards in Clause 5.

This European standard describes requirements and tests for liquid level indicating devices used in refrigerating systems and heat pumps. It applies to devices connected to refrigerant vessels (e.g. on high-pressure liquid receivers, intercoolers and low-pressure separators) and to devices connected to other parts of a refrigerating system (e.g. oil-level sight glasses on a compressor).

Modification of the requirements regarding external heat
sources, calculation of backpressure compensating valves with respect to reduced
stroke depending on pressure ratio and the design of upstream and downstream
lines.

1.1 This European Standard describes the calculation of mass flow for sizing pressure relief devices for components of refrigerating systems. Note: The term "refrigerating system" used in this standard includes heat pumps. 1.2 This European Standard describes the calculation of discharge capacities for pressure relief valves and other pressure relief devices in refrigerating systems including the necessary data for sizing these when relieving to atmosphere or to components within the system at lower pressure.

This European Standard describes requirements, design and installation of flexible pipe elements (e.g. metallic flexible pipe, metallic flexible tube, non-metallic flexible tube, expansion joint) used in the refrigerant circuits of refrigerating systems and heat pumps. It does not apply to flexible pipes that are only occasionally stressed beyond the elastic limit, e.g. during repair work, or to joints which are free to rotate or hinge.