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1、BS EN 1594:2009 ICS 23.040.01; 75.200 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Gas supply systems Pipelines for maximum operating pressure over 16 bar Functional requirements Licensed CopyChinese University of Hong Kong, 11/04/2009 07:27, Uncontrolled C
2、opy, (c) BSI This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2009 BSI 2009 ISBN 978 0 580 62947 1 Amendments/corrigenda issued since publication DateComments BS EN 1594:2009 National foreword This British Standard is the UK impleme
3、ntation of EN 1594:2009. It supersedes BS EN 1594:2000 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee GSE/33, Gas supply. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not pur
4、port to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Licensed CopyChinese University of Hong Kong, 11/04/2009 07:27, Uncontrolled Copy, (c) BSI BS EN 1594:2009
5、EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1594 January 2009 ICS 23.040.01; 75.200Supersedes EN 1594:2000 English Version Gas supply systems - Pipelines for maximum operating pressure over 16 bar - Functional requirements Systmes dalimentation en gaz - Canalisations pour pression maximale
6、de service suprieure 16 bar - Prescriptions fonctionnelles Gasversorgungssysteme - Rohrleitungen fr einen maximal zulssigen Betriebsdruck ber 16 bar - Funktionale Anforderungen This European Standard was approved by CEN on 8 December 2008. CEN members are bound to comply with the CEN/CENELEC Interna
7、l 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 Management Centre or to any CEN member
8、. 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 Management Centre has the same status as the official versions. CEN members
9、 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, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Swi
10、tzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2009 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. N
11、o. EN 1594:2009: E Licensed CopyChinese University of Hong Kong, 11/04/2009 07:27, Uncontrolled Copy, (c) BSI BS EN 1594:2009 EN 1594:2009 (E) 2 Contents Page Foreword . 5 Introduction . 6 1 Scope 7 2 Normative references 9 3 Definitions, symbols and abbreviations . 10 4 Quality and management syste
12、ms 14 5 Safety and the environment . 15 5.1 Introduction 15 5.2 Appropriate safety measures . 15 5.3 Routing considerations 15 5.4 Line valve spacing 17 6 Pressure safety 17 6.1 Pressure levels 17 6.2 Normal operation . 17 6.3 Requirements for installation of pressure safety devices 17 6.4 Pipeline
13、with DP equal to or less than 40 bar and hoop stress equal to or less than 0,45 Rt 0,5 . 18 6.5 Pipeline with DP equal to or less than 24 bar and hoop stress equal to or less than 0,30 Rt 0,5 . 18 7 Design . 19 7.1 General . 19 7.2 Wall thickness determination. 20 7.3 Additional design requirements
14、21 7.4 Analysis of stress and strain . 22 7.5 Design report . 24 7.6 Land management and geotechnical studies 25 7.7 Depth of cover . 25 7.8 Casing pipes 26 7.9 Station design 26 7.10 Pipeline components 28 7.11 Pigging suitability . 28 7.12 Arrangements for venting 28 7.13 Corrosion protection . 29
15、 8 Materials and components . 31 8.1 General requirements . 31 8.2 Pipes . 34 8.3 Fittings 34 8.4 Flanged connections 34 8.5 Insulating connections . 35 8.6 Valves . 35 8.7 External and internal coatings . 35 8.8 End preparation . 35 9 Construction 35 9.1 General . 35 9.2 Execution of work . 36 9.3
16、Special crossings 42 9.4 Cleaning . 46 Licensed CopyChinese University of Hong Kong, 11/04/2009 07:27, Uncontrolled Copy, (c) BSI BS EN 1594:2009 EN 1594:2009 (E) 3 9.5 Testing 46 9.6 Acceptance 48 10 Operation and maintenance . 49 10.1 General . 49 10.2 Organisation 49 10.3 Operating and maintenanc
17、e instructions . 50 10.4 Emergency plan . 50 10.5 Records and documentation 51 10.6 Commissioning 51 10.7 Decommissioning 51 10.8 Recommissioning 51 10.9 Maintenance, modification and repair . 51 10.10 Abandonment 54 Annex A (informative) Settlement areas . 55 A.1 General . 55 A.2 Procedure . 55 A.3
18、 Construction settlement . 55 A.4 Strength calculation 56 A.5 Monitoring 60 A.6 Action in the event of the allowable/limit values being exceeded . 60 A.7 Literature 60 Annex B (informative) Mining subsidence . 61 B.1 General . 61 B.2 Procedure . 61 B.3 Strength calculation 61 B.4 Action in the event
19、 of the allowable/limit values being exceeded . 61 B.5 Monitoring 62 B.6 Literature 62 Annex C (informative) Frost heave 63 C.1 General . 63 C.2 Procedure . 63 C.3 Strength calculation 63 C.4 Other possible measures 63 C.5 Literature 64 Annex D (informative) Landslide areas . 65 D.1 General . 65 D.2
20、 Procedure . 65 D.3 Strength calculation 66 D.4 Possible action to prevent the allowable/limit values being exceeded . 66 D.5 Monitoring 67 D.6 Literature 67 Annex E (informative) Areas with high seismic risk . 68 E.1 General . 68 E.2 Procedure . 68 E.3 Strength calculation 69 E.4 Literature 70 Anne
21、x F (informative) Soil mechanics parameters 72 F.1 Parameters . 72 F.2 Soil engineering study 73 F.3 Literature 73 Annex G (informative) Bored/jacked crossings . 75 G.1 General . 75 G.2 Strength calculation 75 G.3 Literature 78 Annex H (informative) Allowable pulsation and vibration levels . 79 Lice
22、nsed CopyChinese University of Hong Kong, 11/04/2009 07:27, Uncontrolled Copy, (c) BSI BS EN 1594:2009 EN 1594:2009 (E) 4 H.1 Introduction 79 H.2 Pulsations 79 H.3 Pipe vibrations . 79 H.4 Induced effects 80 H.5 Literature 80 Annex I (informative) Allowable vibration levels from construction work -
23、blasting . 81 I.1 General . 81 I.2 Procedure . 81 I.3 Strength calculation 81 I.4 Literature 82 Bibliography 83 Licensed CopyChinese University of Hong Kong, 11/04/2009 07:27, Uncontrolled Copy, (c) BSI BS EN 1594:2009 EN 1594:2009 (E) 5 Foreword This document (EN 1594:2009) has been prepared by Tec
24、hnical Committee CEN/TC 234 “Gas infrastructures”, 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 July 2009, and conflicting national standards shall be w
25、ithdrawn at the latest by July 2009. 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. This document supersedes EN 1594:2000. There is a
26、 complete suite of functional standards prepared by CEN/TC 234 “Gas Supply“ to cover all parts of the gas supply system from the input of gas to the transmission system up to the inlet connection of the gas appliances, whether for domestic, commercial or industrial purposes. A list of the relevant f
27、unctional standards prepared by CEN/TC 234 is included in Clause 2 and the Bibliography of this document. CEN/TC 234 will continue its work updating this European Standard to the latest developments at regular intervals. In preparing this European Standard a basic understanding of gas supply by the
28、user has been assumed. Gas supply systems are complex and the importance on safety of their construction and use has led to the development of very detailed codes of practice and operating manuals in member countries. These detailed statements embrace recognised standards of gas engineering and spec
29、ific requirements imposed by legal structures of these member countries. This European Standard has been prepared under mandate M/017 given to CEN by the Commission of the European Communities and the European Free Trade Association. According to the CEN/CENELEC Internal Regulations, the national st
30、andards organizations of the following countries are bound to implement 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,
31、 Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed CopyChinese University of Hong Kong, 11/04/2009 07:27, Uncontrolled Copy, (c) BSI BS EN 1594:2009 EN 1594:2009 (E) 6 Introduction This European Standard describes the general functional requirements f
32、or gas supply through pipe systems and covers the pressure range greater than 16 bar maximum operating pressure (MOP) for steel systems. It gives normative and informative references for safe and secure gas supply systems. It applies to their design, construction, operation and the related aspects o
33、f safety, environment and public health, all in order to provide a safe and secure supply of gas. The requirements of this European Standard are based on safe gas engineering practice under conditions normally encountered in the gas industry. Requirements for all unusual conditions cannot be specifi
34、cally provided for, nor are all engineering and construction details prescribed. Existing industrial safety regulations applying to work areas, safety devices and safe work practices are not intended to be supplanted by this European Standard. Managers with responsibilities for the design, construct
35、ion and operation of gas supply systems should have regard to the guidance given in this European Standard and to other relevant standards. It is the responsibility of these managers and engineers to apply these functional requirements, supplemented with other proven good practice to the particular
36、circumstances of each gas supply system. The designer, constructor or operator of pipeline systems is cautioned that this European Standard is not a design handbook or code of practice. Additional national or company standards describing the details are needed. These detailed standards should be in
37、line with the basic principles of this European Standard. In preparing this European Standard it was recognized that the suite of relevant European Standards is incomplete. Reference may be made where appropriate to international, national or other standards until relevant European Standards are ava
38、ilable. Licensed CopyChinese University of Hong Kong, 11/04/2009 07:27, Uncontrolled Copy, (c) BSI BS EN 1594:2009 EN 1594:2009 (E) 7 1 Scope This European Standard is applicable to pipelines with a maximum operating pressure (MOP) over 16 bar for the carriage of processed, non-toxic and non-corrosi
39、ve natural gas according to EN ISO 13686 in onland gas supply systems, where: pipeline elements are made of unalloyed or low-alloyed carbon steel; pipeline elements are joined by welds, flanges or mechanical couplings; the pipeline is not located within commercial or industrial premises as an integr
40、al part of the industrial process on these premises except for any pipelines and facilities supplying such premises; the design temperature of the system is between -40 C and 120 C inclusive. The standard applies to onshore pipeline systems from the point where the pipeline first crosses what is nor
41、mally accepted as battery limit between on and offshore, e.g.: first isolation valve; the base of steep sea shelf; above the high water/low water mark onto mainland; an island. The pipeline standard also applies to a pipeline system with a starting point onshore, also when parts of the pipeline syst
42、em on the mainland subsequently cross fjords, lakes etc. This European Standard does not apply to existing pipelines, in use prior to the publication of this European Standard, nor to modifications to existing pipelines. Gas supply systems covered by this European Standard begin after the gas produc
43、ers metering station. The functional demarcation of the pipeline system within a plant area will be determined from case to case. Generally speaking, this will be directly after the first isolating valve of the installation. This standard also describes the mechanical requirements for pipework in st
44、ations with a maximum operating pressure greater than 16 bar. Welding requirements are described in a special application standard on welding for gas supply systems EN 12732. Functional requirements for stations are given in: EN 1776, Gas supply systems - Natural gas measuring stations - Functional
45、requirements EN 1918-5, Gas supply systems - Underground gas storage - Part 5: Functional recommendations for surface facilities EN 12186, Gas supply systems - Gas pressure regulating stations for transmission and distribution - Functional requirements EN 12583, Gas supply systems - Compressor stati
46、ons - Functional requirements This European Standard specifies common basic principles for gas supply systems. Users of this European Standard should be aware that there may exist more detailed national standards and codes of practice in the CEN member countries. This European Standard is intended t
47、o be applied in association with these national standards and/or codes of practice setting out the above mentioned principles. In the event of conflicts in terms of more restrictive requirements in the national legislation/regulation with the requirements of this European Standard, the national legi
48、slation/regulation shall take precedence. Reference is made in this European Standard to relevant European and other recognized standards for products used to construct and operate gas supply systems. A schematic representation of pipelines for gas transmission is given in Figure 1. Licensed CopyChi
49、nese University of Hong Kong, 11/04/2009 07:27, Uncontrolled Copy, (c) BSI BS EN 1594:2009 EN 1594:2009 (E) 8 KEY Figure 1 Schematic representation of pipelines for gas supply over 16 bar PIPELINES COVERED BY THIS STANDARD STATIONS 1 2 3 P - WELL, PRODUCTION T - TREATMENT D ODORIZATION 4 S 1 -GAS RECEIVING 5 S 2 -VALVE STATION 6 S 3 -DELIVERY STATION 7 S 4 -COMPRESSOR STATION 8 S 5 -OTHER SUPPLY (E.G. FOR BLENDING) 9 S 6 -EXPORT OR IMPORT 10 S 7 -PRESSURE REGULATING 11 S 8 -DOMESTIC DISTRIBUTION 12 S 9 -INDUSTRIAL DISTRIBUTION 13 S10
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