1、May 2011 Translation by DIN-Sprachendienst.English price group 29No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23
2、.020.30; 27.080; 27.200!$phu“1776982www.din.deDDIN EN 14276-1Pressure equipment for refrigerating systems and heat pumps Part 1: Vessels General requirements (includes Amendment A1:2011)English translation of DIN EN 14276-1:2011-05Druckgerte fr Klteanlagen und Wrmepumpen Teil 1: Behlter Allgemeine A
3、nforderungen (enthlt nderung A1:2011)Englische bersetzung von DIN EN 14276-1:2011-05Equipements sous pression pour systmes de rfrigration et pompes chaleur Partie 1: Rcipients Exigences gnrales (Amendement A1:2011 inclus)Traduction anglaise de DIN EN 14276-1:2011-05SupersedesDIN EN 14276-1:2006-09ww
4、w.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.8804.11 DIN EN 14276-1:2011-05 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 182 “Refrigerating systems, safety
5、and environmental requirements” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Kltetechnik (Refrigeration Technology Standards Committee), Working Group NA 044-00-01-05 AK Druckbehlter in Klteanlagen of Working Committee NA 044-00-01 AA S
6、icherheit und Umweltschutz. Amendments This standard differs from DIN EN 14276-1:2006-09 as follows: a) normative references have been updated; b) Subclause 7.3 “Manufacturing tolerances” has been modified; c) Table A.2 “Example of temperature application limits for materials” has been modified; d)
7、Table E.1 “Examples for test values of some refrigerants” has been modified. Previous editions DIN EN 14276-1: 2006-09 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14276-1:2006+A1 February 2011 ICS 23.020.30; 27.080; 27.200 Supersedes EN 14276-1:2006English Version Pressure equipment for r
8、efrigerating systems and heat pumps Part 1: Vessels General requirements Equipements sous pression pour systmes de rfrigration et pompes chaleur Partie 1: Rcipients Exigences gnrales Druckgerte fr Klteanlagen und Wrmepumpen Teil 1: Behlter Allgemeine Anforderungen This European Standard was approved
9、 by CEN on 24 May 2006 and includes Amendment 1 approved by CEN on 13 December 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists an
10、d bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management 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
11、responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same 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
12、, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Ma
13、nagement Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14276-1:2006+A1:2011: EEN 14276-1:2006+A1:2011 (E) 2 Contents Foreword 4Introduction . 51 Scope 62 Normative references 63 Term
14、s and definitions . 83.1 Definitions 83.2 Symbols, quantities and units 114 Materials . 134.1 General 134.2 Requirements for materials to be used for pressurised parts 144.3 Requirements for materials 144.4 Requirements for prevention of brittle fracture 154.5 Material documentation 164.6 Materials
15、for non-pressure retaining parts . 165 Pressure Vessel classification . 165.1 Category of vessel . 165.2 Fluid classification. 176 Design . 176.1 General 176.2 Corrosion and corrosion protection 176.3 Stress corrosion cracking 186.4 Loading . 186.5 Maximum allowable pressure PS 186.6 Design pressure
16、 Pd186.7 Calculation pressure P or Pc. 196.8 Design temperature td196.9 Minimum material temperature 196.10 Calculation temperature tc. 196.11 Joint coefficient . 206.12 Design stress . 216.13 Access and inspection openings, venting and draining provisions, filling and discharge provisions and handl
17、ing devices . 226.14 Methods for design 237 Manufacturing 287.1 General 287.2 Material traceability . 287.3 Manufacturing tolerances . 287.4 Permanent joints 287.5 Forming of pressure parts 33DIN EN 14276-1:2011-05 EN 14276-1:2006+A1:2011 (E) 3 7.6 Post weld heat treatment 347.7 Internal cleanness .
18、 347.8 Repairs/Reworks 347.9 Finishing operations . 348 Testing and inspection 358.1 Performance of inspection and testing . 358.2 Design documentation, review and approval . 358.3 Type approval 378.4 Calibration 378.5 Material . 378.6 Manufacturing 388.7 Non destructive testing . 388.8 Subcontracte
19、d elements . 388.9 Final inspection . 388.10 Marking . 398.11 Documentation . 40Annex A (normative) Alternative requirements for prevention of brittle fracture: Method according to temperature stress cases . 42Annex B (normative) Specification and approval of brazing procedures, brazers and brazing
20、operators 46Annex C (normative) Pressure testing 60Annex D (informative) Relations between the different pressures 64Annex E (normative) Experimental methods . 65Annex F (normative) Material characteristics for design 70Annex G (informative) Component classification in the sense of the Pressure Equi
21、pment Directive (PED) . 72Annex H (informative) Selection of module of conformity 73Annex I (normative) Grouping system for materials . 75Annex J (informative) DN System 77Annex K (normative) Specification and approval of expansion procedures and operators . 78Annex ZA (informative) Relationship bet
22、ween this European Standard and the Essential Requirements of EU Directive 97/23/EC . 84Bibliography 86DIN EN 14276-1:2011-05 EN 14276-1:2006+A1:2011 (E) 4 Foreword This document (EN 14276-1:2006+A1:2011) has been prepared by Technical Committee CEN/TC 182 “Refrigerat-ing systems, safety and environ
23、mental requirements”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2011, and conflicting national standards shall be withdrawn at the latest by A
24、ugust 2011. This document includes Amendment 1, approved by CEN on 2010-12-13. This document supersedes EN 14276-1:2006. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. Attention is drawn to the possibility that some of the elements of this docum
25、ent may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association to support Essential Requirements o
26、f EU Directive 97/23/EC concerning Pressure Equip-ment. For relationship with EU Directive 97/23/EC see informative Annex ZA, which is an integral part of this document. This document consists of the following parts under the general title “Pressure equipment for refrigerating systems and heat pumps
27、“: Part 1: Vessels General requirements Part 2: Piping General requirements According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following coun-tries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic,
28、Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. DIN EN 14276-1:2011-05 EN 14276-1:2006+A1:2011 (E) 5 Introdu
29、ction This standard recognises the unique nature of vessels for refrigerating systems or heat pumps and is intended to address the specific needs of the refrigeration and heat pump industry. This standard should be read in conjunction with the various parts of EN 13445. When the text of this standar
30、d modifies or supplements a clause within EN 13445, then this standard should pre-vail. Where this standard does not modify or supplement the requirements of a clause, the requirements of EN 13445 should prevail. The unique nature of a refrigerating system is defined as follows: a) the purpose of th
31、e refrigerating system is to extract and reject heat (this involves both cooling and heating); b) to operate the refrigerating system a pressure-imposing element (e.g. a compressor or an energy source) is necessary; c) the refrigerating system has a defined refrigerant charge in a closed circuit; d)
32、 the refrigerant has a chemical composition and purity defined in the relevant standards; e) the pressure of the refrigerant decreases when the temperature decreases (see typical curve in Annex A of this standard); f) due to the maximum temperature limit of 200 C and the maximum pressure limit of 64
33、 bar, the time depend-ant creep and fatigue due to pressure variation or vibrations are not significant design factors except for some materials such as aluminium, copper and titanium where the fatigue shall be taken into account; g) the risk of overpressure is due to: the pressure imposing element;
34、 an external heat source (e.g. fire or hot water); improper operation. h) the refrigerating system is designed to minimise refrigerant emissions and the ingress of contaminants. Only hermetic compressors are covered by this standard. DIN EN 14276-1:2011-05 EN 14276-1:2006+A1:2011 (E) 6 1 Scope This
35、European Standard specifies the requirements for material, design, manufacturing, testing and documentation for stationary pressure vessels intended for use in refrigerating systems and heat pumps. These systems are refer-enced in this standard as refrigerating systems as defined in EN 378-1. This E
36、uropean Standard applies to vessels including welded or brazed attachments up to and including the nozzle 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. This European Standard applies to pres
37、sure vessels with an internal pressure down to 1 bar, to account for the evacuation of the vessel prior to charging with refrigerant. This European Standard applies to both the mechanical loading conditions and thermal conditions as defined in EN 13445-3 associated with refrigerating systems. It app
38、lies to pressure vessels subject to the maximum allowable temperatures for which nominal design stresses for materials are derived using EN 13445-2 and EN 13445-3 or as specified in this standard. In addition vessels designed to this standard should have a maximum design tempera-ture not exceeding 2
39、00 C and a maximum design pressure not exceeding 64 bars. Outside of these limits, it is im-portant that EN 13445 be used for the design, construction and inspection of the vessel. Under these circum-stances it is important that the unique nature of refrigerating plant, as indicated in the introduct
40、ion to this standard, also be taken into account. It is important that pressure vessels used in refrigerating systems and heat pumps of category less than II as de-fined in Annex H comply with other relevant clauses of EN 378-2 for vessels. This European Standard applies to pressure vessels where th
41、e main pressure bearing parts are manufactured from metallic ductile materials as defined in Clause 4 and Annex I of this standard. This European Standard does not apply to vessels of the following types: vessels of riveted construction; multilayered, autofrettaged or prestressed vessels; vessels di
42、rectly heated by a flame; roll bond heat exchangers. 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 (includin
43、g any amendments) applies. EN 287-1:2004, Qualification test of welders Fusion welding Part 1: Steels !EN 378-1:2008+A1:2010, Refrigerating systems and heat pumps Safety and environmental requirements Part 1: Basic requirements, definitions, classification and selection criteria EN 378-2:2008+A1:200
44、9, Refrigerating systems and heat pumps Safety and environmental requirements Part 2: Design, construction, testing, marking and documentation EN 378-4:2008, Refrigerating systems and heat pumps Safety and environmental requirements Part 4: Op-eration, maintenance, repair and recovery“ EN 764-1:2004
45、, Pressure equipment Part 1: Terminology Pressure, temperature, volume, nominal size EN 764-2:2002, Pressure equipment Part 2: Quantities, symbols and units DIN EN 14276-1:2011-05 EN 14276-1:2006+A1:2011 (E) 7 EN 764-3:2002, Pressure equipment Part 3: Definition of parties involved EN 764-4:2002, Pr
46、essure equipment Part 4: Establishment of technical delivery conditions for metallic materials EN 764-5:2002, Pressure equipment Part 5: Compliance and inspection documentation of materials EN 837-1:1996, Pressure gauges Part 1: Bourdon tube pressure gauges Dimensions, metrology, require-ments and t
47、esting EN 910:1996, Destructive tests on welds in metallic materials Bend tests !EN 1005-2:2003+A1:2008, Safety of machinery Human physical performance Part 2: Manual handling of machinery and component parts of machinery“ !deleted text“ EN 1045:1997, Brazing Fluxes for brazing Classification and technical delivery conditions !EN 1173:2008, Copper and copper alloys Material condition designation“ EN 1418:1997, Welding personnel Approval testing of welding operators for fusion welding and resistance
