1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 12212:2012Petroleum, petrochemicaland natural gas industries Hairpin-type heat exchangers(ISO 12212:2012)BS EN ISO 12212:2012 BRITISH STANDARDNational forewordThis Brit
2、ish Standard is the UK implementation of EN ISO12212:2012.The UK participation in its preparation was entrusted to TechnicalCommittee PSE/17/-/6, Processing equipment and systems forpetroleum and natural gas industries.A list of organizations represented on this committee can beobtained on request t
3、o its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 66141 9ICS 27.060.30; 75.180.20Compliance with a Brit
4、ish Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2012.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12212 August
5、 2012 ICS 75.180.20; 27.060.30 English Version Petroleum, petrochemical and natural gas industries - Hairpin-type heat exchangers (ISO 12212:2012) Industries du ptrole et du gaz naturel - changeurs thermiques en pingle cheveux (ISO 12212:2012) Erdl-, petrochemische und Erdgasindustrie - Haarnadel -W
6、rmetauscher (ISO 12212:2012) This European Standard was approved by CEN on 27 April 2012. CEN members are bound to comply 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 li
7、sts and 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 unde
8、r the 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, Former Y
9、ugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EURO
10、PEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12212:2012: EBS EN ISO 12212:2012EN ISO 12212:2012 (E) 3 Foreword Thi
11、s document (EN ISO 12212:2012) has been prepared by Technical Committee ISO/TC 67 “Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries“ in collaboration with Technical Committee CEN/TC 12 “Materials, equipment and offshore structures for petroleum, pe
12、trochemical and natural gas industries” the secretariat of which is held by AFNOR. 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 February 2013, and conflicting national standards shall be withdr
13、awn at the latest by February 2013. Attention is drawn to the possibility that some of the elements of 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,
14、 the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, La
15、tvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 12212:2012 has been approved by CEN as a EN ISO 12212:2012 without any modification. BS EN ISO 12212:2
16、012ISO 12212:2012(E) ISO 2012 All rights reserved iiiContents Page Foreword . v Introduction vi 1 Scope 1 2 Normative reference 1 3 Terms and definitions . 1 4 General . 3 5 Proposal information required . 4 6 Drawings and other required data . 4 6.1 Outline drawings and other supporting data 4 6.2
17、Information required after outline drawings are reviewed 5 6.3 Reports and records . 6 7 Design . 7 7.1 Design temperature . 7 7.2 Design pressure 7 7.3 Cyclic design . 7 7.4 Shell 8 7.5 Front closure 8 7.6 Rear closure . 10 7.7 Tube bundle . 11 7.8 Nozzles and other connections . 14 7.9 Shell suppo
18、rts 18 7.10 Gaskets . 19 7.11 Flanged external girth joints 19 7.12 Cladding for corrosion allowance . 19 8 Materials . 20 8.1 General . 20 8.2 Requirements for carbon steel in sour or wet hydrogen sulfide service 20 8.3 Gaskets . 20 8.4 Tubes 20 9 Fabrication . 21 9.1 Shells 21 9.2 Tubes 21 9.3 Wel
19、ding . 21 9.4 Heat treatment . 22 9.5 Dimensional tolerances 22 9.6 Gasket contact surfaces other than nozzle flange facings . 23 9.7 Tube-to-tubesheet joints . 23 9.8 Assembly 24 10 Inspection and testing 24 10.1 Quality assurance 24 10.2 Quality control . 24 10.3 Pressure testing 26 10.4 Nameplate
20、s and stampings 26 11 Preparation for shipment 27 11.1 Protection . 27 11.2 Identification 27 BS EN ISO 12212:2012ISO 12212:2012(E) iv ISO 2012 All rights reserved12 Supplemental requirements .28 12.1 General 28 12.2 Design .28 12.3 Examination 28 Annex A (informative) Recommended practices .30 Anne
21、x B (informative) Hairpin heat exchanger checklist 32 Annex C (informative) Hairpin heat exchanger data sheets .34 Bibliography 45 BS EN ISO 12212:2012ISO 12212:2012(E) ISO 2012 All rights reserved vForeword ISO (the International Organization for Standardization) is a worldwide federation of nation
22、al standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Internatio
23、nal organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rule
24、s given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at l
25、east 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 12212 was prepared by Technical Committee ISO/TC 6
26、7, Materials, equipment and offshore structures for petroleum, petrochemical and natural industries, Subcommittee SC 6, Processing equipment and systems. BS EN ISO 12212:2012ISO 12212:2012(E) vi ISO 2012 All rights reservedIntroduction It is necessary that users of this International Standard be awa
27、re that further or differing requirements can be needed for individual applications. This International Standard is not intended to inhibit a vendor from offering, or the purchaser from accepting, alternative equipment or engineering solutions for the individual application. This can be particularly
28、 applicable where there is an innovative or developing technology. Where an alternative is offered, it is the responsibility of the vendor to identify any variations from this International Standard and provide details. This International Standard requires the purchaser to specify certain details an
29、d features. A bullet () at the beginning of a clause or subclause indicates a requirement for the purchaser to make a decision or provide information (for information, a checklist is provided in Annex B). In this International Standard, where practical, US Customary (USC) or other units are included
30、 in parentheses for information. BS EN ISO 12212:2012INTERNATIONAL STANDARD ISO 12212:2012(E) ISO 2012 All rights reserved 1Petroleum, petrochemical and natural gas industries Hairpin-type heat exchangers 1 Scope This International Standard specifies requirements and gives recommendations for the me
31、chanical design, materials selection, fabrication, inspection, testing and preparation for shipment of hairpin heat exchangers for use in the petroleum, petrochemical and natural gas industries. Hairpin heat exchangers include double-pipe and multi-tube type heat exchangers. 2 Normative reference Th
32、e 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. ISO 15156 (all parts), Petroleum and natural gas in
33、dustries Materials for use in H2S-containing environments in oil and gas production ISO 23251, Petroleum, petrochemical and natural gas industries Pressure-relieving and depressuring systems ASME B16.51), Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard NACE MR01032), M
34、aterials Resistant to Sulfide Stress Cracking in Corrosive Petroleum Refining Environments NACE SP0472, Methods and Controls to Prevent In-Service Environmental Cracking of Carbon Steel Weldments in Corrosive Petroleum Refining Environments TEMA3), Standards of the Tubular Exchanger Manufacturers As
35、sociation 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 cyclic service process operation with periodic variation in temperature, pressure and/or flowrate 1)ASME International, 3 Park Avenue, New York, NY 10016-5990, USA. 2) NACE Internation
36、al, P.O. Box 218340, Houston, TX 77218-8340, USA.3)Tubular Exchanger Manufacturers Association, 25 North Broadway, Tarrytown, NY 10591, USA. BS EN ISO 12212:2012ISO 12212:2012(E) 2 ISO 2012 All rights reserved3.2 double-pipe single pipe within a shell 3.3 effective heat transfer area outside surface
37、 area of the tubes that contributes to heat transfer including finned surface area (if any) 3.4 full-penetration weld welded joint that results in weld metal through the entire thickness of the components being joined 3.5 front closure closure that connects the tube side to purchasers tube side pipi
38、ng and fixes the tube bundle or element to the shell 3.6 hairpin heat exchanger double-pipe (pipe-in-pipe) or multi-tube heat exchanger of two-leg bundle where each leg has its own separate shell NOTE Figure 1 shows typical components of a hairpin heat exchanger. 3.7 heat exchanger unit one or more
39、heat exchangers arranged in series or parallel for a specified service that work together to perform the intended duty 3.8 hydrogen service service that contains hydrogen at a partial pressure exceeding 700 kPa (100 psi) absolute 3.9 item number purchasers identification number for a hairpin heat ex
40、changer 3.10 minimum design metal temperature lowest metal temperature at which pressure-containing elements can be subjected to design pressure EXAMPLES Ambient temperature or process fluid temperature. 3.11 multi-tube multiple tubes within a shell 3.12 pressure design code recognized pressure vess
41、el standard specified or agreed by the purchaser EXAMPLES ASME BPVC, Section VIII; EN 13445 (all parts). 3.13 rear closure closure used at the return end of the heat exchanger which covers the u-bends 3.14 sealing ring special gasket that provides a seal on the OD of tubesheet and the shell/tube sid
42、e flange BS EN ISO 12212:2012ISO 12212:2012(E) ISO 2012 All rights reserved 33.15 hairpin section one U-tube element with two shell legs 3.16 seal-welded tube-to-tubesheet joint weld of unspecified strength applied between the tubes and tubesheets for the sole purpose of reducing the potential for l
43、eakage 3.17 strength-welded tube-to-tubesheet joint welded so that the design strength is equal to, or greater than, the axial tube strength specified by the pressure design code 3.18 structural welding code recognized structural welding code specified or agreed by the purchaser 3.19 tube bundle ass
44、embly of U-tubes, tube sheet and baffles where the tubes can be plain or finned Key 1 shell 4 rear closure 2 front closure 5 tube side connection 3 support 6 shell side connection Figure 1 Typical components of a hairpin heat exchanger 4 General 4.1 The pressure design code shall be specified or agr
45、eed by the purchaser. Pressure components shall comply with the pressure design code and the supplemental requirements in this International Standard. 4.2 Where the use of TEMA is specified within this International Standard, the heat-exchanger construction shall conform to TEMA, Class R, unless ano
46、ther TEMA class is specified. 4.3 Hairpin exchangers typically do not require expansion joints. However, it can be necessary to evaluate some units to assess the requirement for an expansion joint. For such cases, the purchaser and vendor shall agree to all relevant design, fabrication, inspection a
47、nd testing requirements. BS EN ISO 12212:2012ISO 12212:2012(E) 4 ISO 2012 All rights reserved 4.4 The vendor shall comply with the applicable local regulations specified by the purchaser. 4.5 Annex A includes recommended mechanical and design details for information. 4.6 Annex B provides a checklist
48、 that can be used by the purchaser to ensure that bulleted items in this International Standard are addressed. 4.7 The purchaser shall specify whether the service is designated as sour in accordance with ISO 15156 (all parts) for oil and gas production facilities and natural gas sweetening plants, o
49、r designated as wet hydrogen sulfide service in accordance with NACE MR0103 for other applications (e.g. petroleum refineries, LNG plants and chemical plants), in which case all materials in contact with the process fluid shall meet the requirements of the applicable standard to mitigate potential for sulfide stress cracking (SSC). Identification of the complete set of materials, qualification, fabrication and testing specifications to prevent in-service environmental cracking is the responsibility of the user (purchaser). NOTE
