1、BS EN ISO25457:2008ICS 75.180.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPetroleum,petrochemical andnatural gas industries Flare details forgeneral refinery andpetrochemical service(ISO 25457:2008)Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 11/
2、06/2009 07:51, Uncontrolled Copy, (c) BSIThis British Standard was published under theauthority of the StandardsPolicy and StrategyCommittee on BSI 2009ISBN 978 0 580 55996 9Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 25457:2008National forewordThis British Standard is the U
3、K implementation of EN ISO 25457:2008.The UK participation in its preparation was entrusted to TechnicalCommittee PSE/17/-/6, Processing equipment and systems for petroleumand natural gas industries.A list of organizations represented on this committee can be obtained onrequest to its secretary.This
4、 publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.28 February2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 11/06/2009 07:51
5、, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 25457December 2008ICS 75.180.20English VersionPetroleum, petrochemical and natural gas industries - Flaredetails for general refinery and petrochemical service (ISO25457:2008)Industries du ptrole, de la ptrochimie et d
6、u gaz naturel -Dtails sur les torches dusage gnral dans les raffinerieset dans les usines ptrochimiques (ISO 25457:2008)Erdl-, petrochemische und Erdgasindustrie - Fackeln frden allgemeinen Betrieb in Raffinerien undpetrochemischen Service (ISO 25457:2008)This European Standard was approved by CEN o
7、n 11 December 2008.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 and bibliographical references concerning such nationalstandards may
8、 be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN
9、Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, N
10、orway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form
11、and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 25457:2008: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 11/06/2009 07:51, Uncontrolled Copy, (c) BSIBS EN ISO 25457:2008EN ISO 25457:2008 (E) 3 Foreword This document (EN ISO 25457:2008) has been prepared by Tech
12、nical Committee ISO/TC 67 “Materials, equipment and offshore structures for petroleum and natural gas industries“ in collaboration with Technical Committee CEN/TC 12 “Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries” the secretariat of which is hel
13、d 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 June 2009, and conflicting national standards shall be withdrawn at the latest by June 2009. Attention is drawn to the possibility that
14、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, the national standards organizations of the following countries are bound to i
15、mplement this European Standard: Austria, Belgium, Bulgaria, 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, Switzerl
16、and and the United Kingdom. Endorsement notice The text of ISO 25457:2008 has been approved by CEN as a EN ISO 25457:2008 without any modification. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 11/06/2009 07:51, Uncontrolled Copy, (c) BSIBS EN ISO 25457:2008ISO 25457:2008(E) ISO 2008 All ri
17、ghts reserved iiiContents Page Foreword .v Introductionvi 1 Scope1 2 Normative references1 3 Terms and definitions .2 4 Design.8 4.1 Introduction8 4.2 System design .10 4.3 Process definition .10 4.4 Types of flares .11 4.5 Flare burners13 4.6 Mechanical design.13 4.7 Pilots.14 4.8 Pilot-ignition sy
18、stems .16 4.9 Pilot-flame detection .16 4.10 Piping17 4.11 Auxiliary components.17 5 Mechanical details Elevated flares18 5.1 Mechanical design Design loads 18 5.2 Design details 21 5.3 Materials of construction22 5.4 Welding.22 5.5 Inspection.23 5.6 Surface preparation and protection 23 5.7 Attachm
19、ents.23 5.8 Aircraft warning lighting.24 5.9 Platforms and ladders.24 6 Mechanical details Enclosed-flame flare25 6.1 Combustion chamber25 6.2 Burners.25 6.3 Burner piping .26 6.4 Pilots.26 6.5 Wind fence .27 6.6 Radiation shielding .27 Annex A (informative) Flare equipment overview28 A.1 Types of f
20、lares and components .28 A.2 Flare burner42 A.3 Pilots.53 A.4 Ignition equipment 58 A.5 Flame-detection equipment68 A.6 Verification test72 A.7 Purge-gas conservation seals .73 A.8 Knockout drums and liquid seals75 A.9 Blowers and drivers 76 A.10 Blower staging and control equipment.80 A.11 Pressure
21、-staging equipment84 A.12 Flow and pressure sensing equipment.88 Annex B (informative) Components of multi-burner staged flare equipment 90 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 11/06/2009 07:51, Uncontrolled Copy, (c) BSIBS EN ISO 25457:2008ISO 25457:2008(E) iv ISO 2008 All rights
22、reservedB.1 Burners .90 B.2 Pilots .91 B.3 Ignition equipment.91 B.4 Flame-detection equipment91 B.5 Buoyancy and velocity seals91 B.6 Manifolds 92 B.7 Operations 92 B.8 Maintenance .92 B.9 Troubleshooting.92 Annex C (informative) Enclosed-flame flares.93 C.1 Purpose.93 C.2 General description .93 C
23、.3 Operating considerations for enclosed-flame flares .100 C.4 Maintenance .104 C.5 Troubleshooting.105 Annex D (informative) Instructions for flare data sheets 106 D.1 Introduction106 D.2 General information forms Instructions .108 D.3 Elevated-flare forms Instructions114 D.4 Enclosed-flare forms I
24、nstructions.116 Annex E (informative) Flare data sheets.118 E.1 SI units 118 E.2 USC units118 Bibliography 119 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 11/06/2009 07:51, Uncontrolled Copy, (c) BSIBS EN ISO 25457:2008ISO 25457:2008(E) ISO 2008 All rights reserved vForeword ISO (the Inte
25、rnational Organization for Standardization) is a worldwide federation of national 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
26、 been established has the right to be represented on that committee. International 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 s
27、tandardization. International Standards are drafted in accordance with the rules 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
28、 for voting. Publication as an International Standard requires approval by at least 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
29、 all such patent rights. ISO 25457 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, Subcommittee SC 6, Processing equipment and systems. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 11/06/20
30、09 07:51, Uncontrolled Copy, (c) BSIBS EN ISO 25457:2008ISO 25457:2008(E) vi ISO 2008 All rights reservedIntroduction Users of this International Standard should be aware that further or differing requirements may be needed for individual applications. This International Standard is not intended to
31、inhibit a vendor from offering, or the purchaser from accepting, alternative equipment or engineering solutions for the individual application. This may be particularly applicable where there is innovative or developing technology. Where an alternative is offered, the vendor should identify any vari
32、ations from this International Standard and provide details. In International Standards, the SI system of units is used. Where practical in this International Standard, US Customary units are included in brackets for information. A bullet (z) at the beginning of a clause or subclause indicates that
33、either a decision is required or further information is to be provided by the purchaser. This information should be indicated on data sheets (see examples in Annex E) or stated in the enquiry or purchase order. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 11/06/2009 07:51, Uncontrolled Cop
34、y, (c) BSIBS EN ISO 25457:2008INTERNATIONAL STANDARD ISO 25457:2008(E) ISO 2008 All rights reserved 1Petroleum, petrochemical and natural gas industries Flare details for general refinery and petrochemical service 1 Scope This International Standard specifies requirements and provides guidance for t
35、he selection, design, specification, operation and maintenance of flares and related combustion and mechanical components used in pressure-relieving and vapour-depressurizing systems for petroleum, petrochemical and natural gas industries. Although this International Standard is primarily intended f
36、or new flares and related equipment, it is also possible to use it to evaluate existing flare facilities. Annexes A, B and C provide further guidance and best practices for the selection, specification and mechanical details for flares and on the design, operation and maintenance of flare combustion
37、 and related equipment. Annex D explains how to use the data sheets provided in Annex E; it is intended that these data sheets be used to communicate and record design information. 2 Normative references The following referenced documents are indispensable for the application of this document. For d
38、ated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles Specifications and test methods ISO 2408:2004, Steel wire ropes for g
39、eneral purposes Minimum requirements ISO 8501-1:2007, Preparation of steel substrates before application of paints and related products Visual assessment of surface cleanliness Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of pr
40、evious coatings ISO 10684, Fasteners Hot dip galvanized coatings ISO 13705:2006, Petroleum, petrochemical and natural gas industries Fired heaters for general refinery service ISO 15156 (all parts), Petroleum and natural gas industries Materials for use in H2S-containing environments in oil and gas
41、production ISO 23251, Petroleum, petrochemical and natural gas industries Pressure-relieving and depressuring systems EN 1092-1:2007, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 1: Steel flanges Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA
42、 STANDARDS, 11/06/2009 07:51, Uncontrolled Copy, (c) BSIBS EN ISO 25457:2008ISO 25457:2008(E) 2 ISO 2008 All rights reservedEN 10264-2:20021), Steel wire and wire products Steel wire for ropes Part 2: Cold drawn non alloy steel wire for ropes for general applications EN 12385-10, Steel wire ropes Sa
43、fety Part 10: Spiral ropes for general structural applications API RP 2A WSD:20002), Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms Working Stress Design ASME B16.5-20033), Pipe Flanges and Flanged Fittings ASME STS-1, Steel Stacks ASTM A 123/A123M4), Standard
44、 Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products ASTM A 143/A143M, Standard Practice for Safeguarding Against Embrittlement of Hot-Dip Galvanized Structural Steel Products and Procedure for Detecting Embrittlement ASTM A 153/A153M, Standard Specification for Zinc Coat
45、ing (Hot-Dip) on Iron and Steel Hardware ASTM A 384/A384M, Standard Practice for Safeguarding Against Warpage and Distortion During Hot-Dip Galvanizing of Steel Assemblies ASTM A 385, Standard Practice for Providing High-Quality Zinc Coatings (Hot-Dip) ASTM A 475-03, Standard Specification for Zinc-
46、Coated Steel Wire Strand ASTM A 586-04, Standard Specification for Zinc-Coated Parallel and Helical Steel Wire Structural Strand ASTM B 633, Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel NACE MR0103:075), Materials Resistant to Sulfide Stress Cracking in Corrosive Pe
47、troleum Refining Environments SSPC SP 6/NACE No. 36), Joint Surface Preparation Standard: Commercial Blast Cleaning 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 air seal purge reduction device device used to minimize or eliminate the intru
48、sion of air back into the riser from the exit EXAMPLE Buoyancy seal, orifice seal, velocity seal. 1) Comit Europen de Normalisation, 36, rue de Stassart, B-1050 Brussels, Belgium. 2) American Petroleum Institute, 1220 L Street, N.W., Washington, D.C. 20005, USA. 3) American Society of Mechanical Eng
49、ineers, 3 Park Avenue, New York, NY 10017, USA. 4) American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, USA. 5) NACE International, P.O. Box 218340, Houston, TX 77218-8340, USA. 6) The Society for Protective Coatings, 40 24th Street, 6th Floor, Pittsburgh, PA 15222-4643, USA. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 11/06/2009 07:51, Uncontrolled Copy, (c) BSIBS EN ISO 25457:2008ISO 25457:2008(E) ISO 2008 All rights reserved 33.2 assist g
