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BS EN 378-2:2016

BS EN 378-2:2016

$215.11

Refrigerating systems and heat pumps. Safety and environmental requirements – Design, construction, testing, marking and documentation

Published By Publication Date Number of Pages
BSI 2016 90
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This European Standard specifies the requirements for the safety of persons and property, provides guidance for the protection of the environment and establishes procedures for the operation, maintenance and repair of refrigerating systems and the recovery of refrigerants. The term “refrigerating system” used in this European Standard includes heat pumps. This Part 2 of this Standard is applicable to the design, construction and installation of refrigerating systems including piping, components and materials. It includes ancillary equipment not covered in FprEN 378-1:2016, FprEN 378-3:2016 or FprEN 378-4:2016 which is directly associated with these systems. It also specifies requirements for testing, commissioning, marking and documentation. Requirements for secondary heat transfer circuits are excluded except for any protection requirements associated with the refrigerating system. Ancillary equipment includes, for example, fans, fan motors, electrical motors and transmission assemblies for open compressor systems. This standard applies: a) to refrigerating systems, stationary or mobile, of all sizes except to vehicle air conditioning systems covered by a specific product standard, e.g. ISO 13043; b) to secondary cooling or heating systems; c) to the location of the refrigerating systems; d) to replaced parts and added components after adoption of this standard if they are not identical in function and in the capacity. Systems using refrigerants other than those listed in Annex E of FprEN-378 1:2016 are not covered by this standard. This standard does not apply to goods in storage. This standard is not applicable to refrigerating systems which were manufactured before the date of its publication as a European Standard except for extensions and modifications to the system which were implemented after publication. This standard is applicable to new refrigerating systems, extensions or modifications of already existing systems, and for existing stationary systems, being transferred to and operated on another site. This standard also applies in the case of the conversion of a system to another refrigerant type, in which case conformity to the relevant clauses of parts 1 to 4 of the standard shall be assessed.

PDF Catalog

PDF Pages PDF Title
4 Contents Page
10 1 Scope
2 Normative references
14 3 Terms, definitions and abbreviated terms
15 4 Significant hazards
5 Safety requirements
5.1 General safety and environmental requirements
5.1.1 General
5.1.2 Hazards to persons, property and environment
5.2 Safety requirements for components and piping
5.2.1 General requirements
17 5.2.2 Specific requirements
5.2.2.1 General
5.2.2.2 Tightness
18 5.2.2.3 Piping joints
5.2.2.4 Refrigerant liquid pumps
5.3 Miscellaneous components
5.3.1 Materials
5.3.1.1 General
5.3.1.2 Ferrous materials
19 5.3.1.3 Non-ferrous materials and their alloys (cast, forged, rolled and drawn)
20 5.3.1.4 Non-metallic materials
5.3.2 Testing
5.3.2.1 Tests
21 5.3.2.2 Strength pressure test for miscellaneous components
22 5.3.3 Marking
5.3.4 Documentation
23 6 Requirements for assemblies
6.1 General
24 6.2 Design and construction
6.2.1 General
6.2.2 Determination of the maximum allowable pressure
6.2.2.1 Maximum allowable pressure (PS)
26 6.2.2.2 Component maximum allowable pressure
6.2.2.3 Damage limitation requirements in the event of external fire
27 6.2.3 Piping
6.2.3.1 Foreseeable misuse of piping
6.2.3.2 Piping joints and fittings
29 6.2.3.3 Requirements for piping installed at site
31 6.2.3.4 Piping for accessories and measurements
32 6.2.3.5 Drain
6.2.4 Shut off devices
6.2.4.1 Isolating valves
6.2.4.2 Hand operated valves
6.2.4.3 Change of gland packing/seal
6.2.4.4 Oil drain that can be actuated during normal operation
6.2.4.5 Arrangement of shut-off devices
33 6.2.5 Protection devices
6.2.5.1 General
6.2.5.2 Safety switching devices for limiting the pressure
6.2.6 Application of protection devices
6.2.6.1 General
34 6.2.6.2 Protection of the refrigerating system against excessive pressure except in the event of external fire
38 6.2.6.3 Overflow valves
6.2.6.4 Isolation of pressure relief devices
6.2.6.5 Indication device for pressure relief devices
6.2.6.6 Arrangement of pressure relief devices for refrigerating systems
40 6.2.6.7 Arrangement of safety switching devices for limiting the pressure
6.2.6.8 Protection of the secondary cooling and heating system
41 6.2.7 Indicating and measuring instruments (monitoring)
6.2.7.1 General
6.2.7.2 Arrangement of refrigerant pressure indicators
6.2.7.3 Liquid level indicators
42 6.2.8 Liquid slugging in compressors
6.2.9 Electrical requirements
6.2.10 Protection against hot surfaces
6.2.11 Protection against moving parts
6.2.12 Vibration and drop test
6.2.12.1 General
43 6.2.12.2 Vibration test in the final transport packaging
6.2.12.3 Drop test in the final transport packaging
6.2.12.4 Drop test without transport packaging
44 6.2.12.5 Operation after drop test
6.2.12.6 Resonance test
45 6.2.13 Transport test
6.2.14 Protection against fire and explosion hazards
47 6.2.15 Requirements for ventilated enclosures
6.2.16 Electromagnetic compatibility and fields (EMC, EMF)
48 6.2.17 Noise
6.3 Testing
6.3.1 Tests
6.3.2 Strength pressure test
49 6.3.3 Tightness test
6.3.3.1 General
50 6.3.3.2 For self-contained systems with refrigerant charge less than 5 kg which are tested with refrigerant in the system
6.3.3.3 For systems not covered by 6.3.3.2
51 6.3.4 Test of the complete refrigerating system before putting it into operation
6.3.4.1 General
6.3.4.2 Inspection of refrigerating system
52 6.3.4.3 Checking of safety devices
6.3.4.4 Checking of refrigerant piping
6.3.4.5 Visual inspection of the complete installation
6.4 Marking and documentation
6.4.1 General
6.4.2 Marking
6.4.2.1 General
53 6.4.2.2 Refrigerating systems
6.4.2.3 Piping and valves
54 6.4.3 Documentation
6.4.3.1 Installation documentation
6.4.3.2 Instruction manual
55 6.4.3.3 On site information
56 6.4.3.4 Drawings
6.4.3.5 Logbook
57 Annex A (normative)Additional requirements for refrigerating systemscontaining R-717
A.1 Systems with a refrigerant charge above 50 kg
A.2 Systems with a refrigerant charge above 3 000 kg
A.3 Pumps
58 Annex B (normative)Determination of category for components and refrigerating system assemblies
B.1 General
B.2 Classification of the refrigerant
B.3 Determine the maximum allowable pressure of the assembly
B.4 Determine the state (liquid or gas) of the refrigerant
B.5 Determination of category of components
B.5.1 General
B.5.2 Pressure vessels and piping
62 B.5.3 Safety accessories
B.5.4 Joining of pressure equipment
65 B.6 Determination of category of the assembly
66 Annex C (normative)Requirements for intrinsic safety test
C.1 General
C.2 Determination of the maximum pressure during abnormal operation
C.2.1 Determination of the pressure at the high pressure side (Phis)
C.2.2 Determination of the pressure at the low pressure side (Plis)
67 C.2.3 Determination of Phis and Plis for reversible heat pumps
C.3 Strength pressure test
C.4 Test results
68 Annex D (normative)List of significant hazards
69 Annex E (informative)Assessment of assemblies for compliance with directive 2014/68/EU
70 Annex F (informative)Examples for arrangement of pressure relief devicesin refrigerating systems
73 Annex G (informative)Checklist for external visual inspection of the installation
75 Annex H (informative)Stress corrosion cracking
H.1 Introduction
H.2 Stress corrosion in copper
H.3 Stress corrosion in steel
76 H.4 Factors that influence stress corrosion cracking
H.4.1 General
H.4.2 Yield strength
H.4.3 Temperature
H.4.4 Oxygen content
H.4.5 Water content
H.4.6 Age of equipment
77 H.4.7 Avoiding stress corrosion cracking
H.4.8 Conclusions
78 Annex I (informative)Leak simulation test for A2L, A2, A3, B2L, B2, B3 refrigerants
80 Annex J (informative)Commissioning procedure
81 Annex K (informative)Information on effective ignition sources
83 Annex ZA (informative)Relationship between this European Standardand the Essential Requirements of EU Directive 2014/68/EU
85 Annex ZB (informative)Relationship between this European Standardand the Essential Requirements of EU Directive 2006/42/EC

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BS EN 378-2:2016
$215.11