1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 16084:2011Refrigerating systems and heat pumps Qualification of tightness of components and jointsBS EN 16084:2011 BRITISH STANDARDNational forewordThis British Standard is
2、 the UK implementation of EN 16084:2011. The UK participation in its preparation was entrusted to T e c h n i c a l Committee RHE/18, Refrigeration safety.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include al
3、l the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 70558 8 ICS 27.080; 27.200 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Po
4、licy and Strategy Committee on 31 May 2011.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 16084:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16084 April 2011 ICS 27.080; 27.200 English Version Refrigerating systems and heat pumps - Qualification of tightness of comp
5、onents and joints Systmes de rfrigration et pompes chaleur - Qualification de ltanchit des composants et des jointsKlteanlangen und Wrmepumpen - Qualifizierung der Dichtheit der Bauteile und Verbindungen This European Standard was approved by CEN on 20 February 2011. CEN members are bound to comply
6、with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Ma
7、nagement Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
8、status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Port
9、ugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means
10、 reserved worldwide for CEN national Members. Ref. No. EN 16084:2011: EBS EN 16084:2011EN 16084:2011 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .54 Symbols 65 Test requirements 76 Requirements for hermetically sealed systems 117 Test procedures 117.1 Gener
11、al . 117.2 Sampling 117.3 Test temperature . 117.4 Tightness test 127.4.1 General . 127.4.2 Tightness control level . 137.5 Requirements for joints . 157.5.1 Test samples . 157.5.2 Torque 157.5.3 Reusable joint . 157.5.4 Requirements for hermetically sealed joints . 157.6 Pressure-temperature vibrat
12、ion tests (PTV) 167.6.1 General . 167.6.2 Samples . 167.6.3 Test method . 167.6.4 Method 1: Combined pressure-temperature cycle test with integrated vibration test 177.6.5 Method 2: Combined pressure-temperature cycle test with a separate vibration test . 187.7 Operation simulation 247.8 Freezing te
13、st 257.9 Additional pressure test for hermetically sealed joints 267.10 Vacuum Test 267.11 Compatibility Screening Test 277.11.1 General . 277.11.2 Test fluids 277.11.3 Test specimens . 277.11.4 Test setup parameters . 277.11.5 Test procedure 287.11.6 Pass/fail criteria for sealing elements 297.12 F
14、atigue test for hermetically sealed joints . 308 Test report . 309 Information to the user . 30Annex A (normative) Equivalent tightness control levels 31A.1 Calculation models . 31A.2 From volumetric flow to mass flow. 32A.3 Tightness control level stated as bubbles of air in unit time . 34Annex B (
15、informative) Test arrangements . 37Bibliography . 38BS EN 16084:2011EN 16084:2011 (E) 3 Foreword This document (EN 16084:2011) has been prepared by Technical Committee CEN/TC 182 “Refrigerating systems, safety and environmental requirements”, the secretariat of which is held by DIN. This European St
16、andard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2011, and conflicting national standards shall be withdrawn at the latest by October 2011. Attention is drawn to the possibility that some of the elements o
17、f this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European
18、 Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the U
19、nited Kingdom. BS EN 16084:2011EN 16084:2011 (E) 4 1 Scope This European Standard is intended to describe 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 EN 378.
20、 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 EN 1736. Metal flexible piping are covered by this standard. The requirements c
21、ontained 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 characterise their tightness stresses met during their operations, following the fitting procedure specified by the manufactu
22、rer, 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 h
23、ermetically sealed and closed components, joints and parts used in the refrigerating installations, including those with seals, whatever their material and their design are. This European Standard specifies additional requirements for mechanical joints that can be recognised as hermetically sealed j
24、oints. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 378-1:2008, Refr
25、igerating systems and heat pumps Safety and environmental requirements Part 1: Basic requirements, definitions, classification and selection criteria EN 1330-8:1998, Non-destructive testing Terminology Part 8: Terms used in leak tightness testing EN 1593, Non-destructive testing Leak testing Bubble
26、emission techniques EN 1736, Refrigerating systems and heat pumps Flexible pipe elements, vibration isolators, expansion joints and non-metallic tubes Requirements, design and installation EN 12284, Refrigerating systems and heat pumps Valves Requirements, testing and marking EN 12693, Refrigerating
27、 systems and heat pumps Safety and environmental requirements Positive displacement refrigerant compressors EN 13134, Brazing Procedure approval EN 13185:2001, Non-destructive testing Leak testing Tracer gas method EN 60068-2-6, Environmental testing Part 2-6: Tests Tests Fc: Vibration (sinusoidal)
28、(IEC 60068-2-6:2007) EN 60068-2-64, Environmental testing Part 2-64: Tests Test Fh: Vibration, broadband random and guidance (IEC 60068-2-64:2008) EN 60335-2-34, Household and similar electrical appliances Safety Part 2-34: Particular requirements for motor-compressors (IEC 60335-2-34:2002) BS EN 16
29、084:2011EN 16084:2011 (E) 5 EN ISO 175, Plastics Methods of test for the determination of the effects of immersion in liquid chemicals (ISO 175:2010) ISO 1817, Rubber, vulcanized Determination of the effect of liquids 3 Terms and definitions For the purposes of this document, the terms and definitio
30、ns given in EN 1330-8:1998 and EN 378-1:2008 and the following apply. 3.1 mass flow rate Qmvalue of the leak mass flow rate at any point of the component NOTE The mass flow rate is expressed in grams (g) per year. 3.2 volume flow rate Q value of the leak volume flow rate at any point of the componen
31、t NOTE The volume flow rate is expressed in pascal cubic metres per second (Pam/s). 3.3 hermetically sealed system system in which all refrigerant containing parts are made tight by welding, brazing or a similar permanent connection which may include capped valves and capped service ports that allow
32、 proper repair or disposal and which have a tested tightness control level of less than 3 g per year under a pressure of at least a quarter of the maximum allowable pressure NOTE Sealed systems as defined in EN 378-1:2008 equal hermetically sealed systems. 3.4 product family group of products that h
33、ave the same function, same technology, and same material for each functional part and sealing materials 3.5 permanent joints means joints which cannot be disconnected except by destructive methods Adapted from the Pressure Equipment Directive 97/23/EC 3.6 reusable joint joint made without replacing
34、 the sealing material in general procedure NOTE In some cases the tube is used as sealing material (e.g. flared joint). 3.7 same base material material belonging to the same group as follows: steel group; aluminium and aluminium alloy group; or copper group NOTE Subgroups of these material groups ar
35、e considered to be same base materials (refer to EN 14276-2). BS EN 16084:2011EN 16084:2011 (E) 6 4 Symbols Symbols used in this standard are given in Table 1. Table 1 Symbols Symbol Denomination Unit DKrelPercentage deviation of the minimum and maximum torque from the average of the minimum and max
36、imum torque, (Kmax Kmin)/(Kmin+ Kmax) f Frequency of vibrations Hz KaveAverage torques of the respective joint standard Nm KmaxRequired maximum torques of the respective joint standard, if specified. Otherwise, the maximum torque values supplied by the manufacturer. Nm KminRequired minimum torques o
37、f the respective joint standard, if specified. Otherwise, the minimum torque values supplied by the manufacturer. Nm L Length of tube mm n Number of cycles in temperature and in pressure (method 1) n1Number of cycles in temperature and in pressure (method 2) n2Number of cycles in pressure n3Number o
38、f cycles in vibration ntotalTotal number of cycles in temperature and in pressure N Number of samples P Tightness test pressure bar PmaxMaximal pressure of cycle bar PminMinimal pressure of cycle bar PS Maximal allowable pressure bar PsetNominal set pressure of the device bar Q Volume flow rate Pam3
39、/s QmMass flow rate g/yr s Vibration displacement (peak to peak value) mm TmaxMaximal temperature of cycle C TminMinimal temperature of cycle C BS EN 16084:2011EN 16084:2011 (E) 7 5 Test requirements The required tests to be applied to component bodies and joint used in refrigerating systems and hea
40、t pumps are given in Table 2 and in Table 3. The following figures show in Figure 1 the principle of a component and a joint and their corresponding requirements in Table 2 or Table 3. a) According to Table 2 b) According to Table 2 c) According to Table 3 Key 1 joint 2 component body 3 pipe 4 compo
41、nent body joint 5 extension pipe Figure 1 Principle: component body-joint All component types and joints types shall be tested. When a component may be connected with different types of joints, one of these joints shall be tested with the component according to Table 2. The other possible types of j
42、oints shall be tested independently according to Table 3. BS EN 16084:2011BS EN 16084:2011EN 16084:2011 (E) 8 Table 2 Requirements for component bodies Components (including valves): Requirements Tightness test 7.4 PTV- test (pressure-temperature -vibration) 7.6 Operation simulation 7.7 Freezing tes
43、t 7.8 Chemical compatibility with materials 7.11 Vacuum test7.10 Additional test for hermetically sealed Pressure test 7.9 Fatigue test 7.12 Component bodies having only permanent body joints: brazing and welding Identical base materials YES NO NO NO NO NO NO NO Components having permanent body join
44、ts: brazing and welding Different base materials YES YES a NO NO NO NO NO NO Component bodies having other permanent body joints: e.g. glue, permanent compression fittings, expansion joints YES YES NO YES if operating temperature below 0 C YES if non metallic parts YES YES YES Component bodies with
45、non permanent body joints YES YES YES if any external stems, shaft seals or removable or replaceable parts YES if operating temperature below 0 C YES if non metallic parts YES Not applicable Not applicable aPTV tests are not required if destructive and non destructive tests of EN 13134 are caried ou
46、t. BS EN 16084:2011BS EN 16084:2011EN 16084:2011 (E) 9 Table 2 (continued) Components (including valves): Requirements Tightness test 7.4 PTV- test (pressure-temperature -vibration) 7.6 Operation simulation 7.7 Freezing test 7.8 Chemical compatibility with materials 7.11 Vacuum test7.10 Additional t
47、est for hermetically sealed Pressure test 7.9 Fatigue test 7.12 Capped valves and capped service ports for hermetically sealed systems YES YES YES YES if operating temperature below 0 C YES if non metallic parts YES YES YES Safety valves YES YES NO NO YES if non metallic parts Not applicable Not app
48、licable Not applicable Flexible piping Test according to EN 1736 By exception compressors that comply with the requirements of EN 12693 or EN 60335-2-34 only need to be subjected to the following test: joints connecting to other parts of the refrigerating systems; chemical compatibility test for all
49、 gaskets (sight glass, etc.). NOTE Other qualifications for this chemical compatibility done according to other standards are equivalent. BS EN 16084:201110 Table 3 Requirements for the joining of components Joints and parts Requirements Tightness test 7.4 PTV- test (pressure-temperature-vibration) 7.6 Operation simulation 7.7
