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23/30467036 DC BS EN 12693. Refrigerating systems and heat pumps. Safety and environmental requirements. Positive displacement refrigerant compressors, 2023
- 41_e_stf (6).pdf [Go to Page]
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and symbols [Go to Page]
- 3.1 Terms and definitions
- 3.2 Symbols
- 4 List of significant hazards
- 5 Safety requirements and/or protective measures [Go to Page]
- 5.1 General
- 5.2 Protection of moving parts
- 5.3 Safety to prevent loss of stability
- 5.4 Safety during handling
- 5.5 Safety to prevent rupture or bursting [Go to Page]
- 5.5.1 General
- 5.5.2 Pressure requirements
- 5.5.3 Design and Materials [Go to Page]
- 5.5.3.1 Materials
- 5.5.3.2 Materials certificates
- 5.5.3.3 Design
- 5.5.4 Sight glasses
- 5.5.5 Application of pressure relief devices [Go to Page]
- 5.5.5.1 Protection against discharge shut off valve closed
- 5.5.5.2 Protection against standstill pressure higher than operating pressure
- 5.6 Electrical safety [Go to Page]
- 5.6.1 General
- 5.6.2 Classification
- 5.6.3 Determination of current ratings
- 5.6.4 Protection against access to live parts
- 5.6.5 Connecting devices
- 5.6.6 Provisions for earthing
- 5.6.7 Internal wiring
- 5.6.8 High potential test
- 5.6.9 Insulating materials
- 5.6.10 Motor compressors protection devices
- 5.7 Measures to reduce emissions of substances
- 6 Verification of safety requirements and/or protective measures [Go to Page]
- 6.1 General
- 6.2 Type test [Go to Page]
- 6.2.1 General
- 6.2.2 Strength test
- 6.2.3 Pressure relief device
- 6.2.4 Verification of electrical safety [Go to Page]
- 6.2.4.1 High potential test
- 6.2.4.2 Requirements on motor protection
- 6.2.5 Lifting points
- 6.3 Individual test [Go to Page]
- 6.3.1 General
- 6.3.2 Strength test [Go to Page]
- 6.3.2.1 General
- 6.3.2.2 Individual strength test A
- 6.3.2.3 Individual strength test B
- 6.3.3 Test for tightness
- 6.3.4 Verification of electrical safety
- 7 Marking, graphical symbols, written warnings [Go to Page]
- 7.1 General
- 7.2 Marking
- 7.3 Graphical symbols, written warnings and information [Go to Page]
- 7.3.1 Lifting points
- 7.3.2 Pressurizing the housing
- 7.3.3 Lubricant charge
- 8 Appropriate manufacturing procedures
- 9 Documentation and information for the user [Go to Page]
- 9.1 General
- 9.2 Instruction handbook
- Annex A (normative)Procedure for the design of a refrigerant compressor by calculation [Go to Page]
- A.1 Calculation method [Go to Page]
- A.1.1 General
- A.1.2 Strength values for the design calculation
- A.1.3 Documentation [Go to Page]
- A.1.3.1 General
- A.1.3.2 Material properties
- A.2 Design stress to be used for the calculation [Go to Page]
- A.2.1 Design stress for main pressure bearing parts
- A.2.2 Design calculation of screws, fasteners, nuts and bolts
- Annex B (normative)Experimental design method for refrigerant compressors [Go to Page]
- B.1 Experimental design method [Go to Page]
- B.1.1 General
- B.1.2 Choice and verification of material properties
- B.1.3 Procedure for the experimental design method
- B.1.4 Testing at maximum allowable design test pressure PF
- B.1.5 Testing at minimum burst test pressure PTest
- B.1.6 Documentation
- B.2 Determination of maximum allowable design test pressure PF
- B.3 Determination of the minimum burst test pressure PTest
- B.4 Correction for the actual wall thickness
- Annex C (normative)Determination of the allowable pressure at the maximum operating temperature [Go to Page]
- C.1 Relation of the allowable pressure and higher temperatures [Go to Page]
- C.1.1 General
- C.1.2 Documentation
- C.2 Determination of the maximum allowable pressure at higher temperatures
- Annex D (normative)Determination of the allowable pressure at minimum operating temperature — Requirements to avoid brittle fracture [Go to Page]
- D.1 Relation of the allowable pressure and lower temperatures [Go to Page]
- D.1.1 General
- D.1.2 Requirements of materials and proof of material properties
- D.1.3 Documentation
- D.2 Determination of the maximum allowable pressure at the minimum operating temperature
- D.3 Determination of the maximum allowable pressure at the minimum operating temperature on the basis of an empirical method (tmin-Method) [Go to Page]
- D.3.1 General
- D.3.2 Determining tmin 100, tmin 75 and tmin 25
- D.3.3 Welded constructions
- D.3.4 Determination of the safety factor
- D.3.5 Material test and documentation
- D.4 Determination of the minimum operating temperature TSmin based on reference thickness eB [Go to Page]
- D.4.1 General
- D.4.2 Temperature adjustment
- D.4.3 Determining design reference temperature TR
- D.5 Determination of screws, fasteners, nuts and bolts below – 10 °C
- Annex E (informative)Compilation of material characteristics of often used materials
- Annex F (informative)Basic design criteria for refrigerant compressors [Go to Page]
- F.1 General
- F.2 Compressor capability against technical performance [Go to Page]
- F.2.1 Design, dimensioning and manufacturing rules
- F.2.2 Choice of material
- F.3 Compressor capability against user requirements [Go to Page]
- F.3.1 Design, dimensioning and manufacturing rules
- F.3.2 Choice of material
- Annex ZA (informative)Relationship between this European Standard and the essential requirements of EU-Directive 2006/42/EC aimed to be covered [Go to Page]