EN 12186-2014 en Gas infrastructure - Gas pressure regulating stations for transmission and distribution - Functional requirements《天然气基础设施 气体压力调节站的传输和分配功能要求》.pdf

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1、BSI Standards PublicationBS EN 12186:2014Gas infrastructure Gaspressure regulating stations fortransmission and distribution Functional requirementsBS EN 12186:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12186:2014. It supersedes BS EN 12186:2000 which

2、is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GSE/33, Gas supply.A list of organizations represented on this committee can be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 purport to include all the necessary provisions of a contract. User

3、s are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 82491 3ICS 23.060.40; 27.060.20; 75.200Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published unde

4、r the authority of the Standards Policy and Strategy Committee on 31 October 2014.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 12186:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12186 October 2014 ICS 23.060.40; 27.060.20; 75.200 Supersedes EN 12186:200

5、0English Version Gas infrastructure - Gas pressure regulating stations for transmission and distribution - Functional requirements Infrastructures gazires - Postes de dtente rgulation de pression de gaz pour le transport et la distribution - Prescriptions fonctionnelles Gasinfrastruktur - Gas-Druckr

6、egelanlagen fr Transport und Verteilung - Funktionale Anforderungen This European Standard was approved by CEN on 13 September 2014. 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 sta

7、ndard without any alteration. Up-to-date lists 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

8、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 status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Re

9、public, Denmark, Estonia, Finland, Former Yugoslav 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. EUROPE

10、AN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12186:2014 EBS EN

11、12186:2014EN 12186:2014 (E) 2 Contents Page Foreword 4 1 Scope 6 2 Normative references 6 3 Terms, definitions, symbols and abbreviations .7 3.1 General 7 3.2 Station .8 3.3 Pressure, design and testing . 10 3.4 Pressure control . 11 3.5 Continuity of supply . 12 4 Quality and management system 13 5

12、 Environmental impact 13 6 Layout of the gas pressure regulating station 13 6.1 General . 13 6.2 Layout of the site 14 6.3 Site security . 14 7 Housings 14 7.1 General . 14 7.2 Requirements for housings . 15 7.3 Underground stations 16 8 Design of the station 17 8.1 General . 17 8.2 Continuity of su

13、pply . 17 8.3 Gas pre-heating . 17 8.4 Filters, separators, scrubbers . 18 8.5 Noise control . 18 8.6 Apertures and vent lines 18 8.7 Hazardous areas . 19 8.8 Lightning and earthing . 19 8.9 Cathodic protection and electrical isolation 20 8.10 Pressure control equipment and ancillaries 20 8.11 Pipew

14、ork 20 8.12 Welding 21 8.13 Instrumentation pipework 21 8.14 Stress analysis 22 8.15 Standard pressure equipment . 23 8.16 Isolating valves . 23 9 Pressure control . 23 9.1 General . 23 9.2 Pressure regulating system . 24 9.3 Pressure safety system 24 9.4 Safety shut-off devices 26 9.5 Monitors . 26

15、 9.6 Venting pressure safety devices . 27 9.7 Pressure alarm system 27 9.8 Instrumentation . 27 9.9 Bypasses . 27 BS EN 12186:2014EN 12186:2014 (E) 3 10 Testing 27 10.1 General . 27 10.2 Pressure testing 28 10.3 Reporting 28 11 Commissioning 29 12 Operation and maintenance . 29 12.1 General . 29 12.

16、2 Data . 30 12.3 Maintenance . 30 12.4 Training. 31 12.5 Work undertaken . 31 12.6 Fire fighting 31 13 Decommissioning and disposal 31 13.1 Decommissioning 31 13.2 Disposal 32 Annex A (informative) Glossary. 33 Annex B (informative) Significant technical changes between this European Standard and th

17、e previous edition . 35 Bibliography 37 BS EN 12186:2014EN 12186:2014 (E) 4 Foreword This document (EN 12186:2014) has been prepared by Technical Committee CEN/TC 234 “Gas infrastructure”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standar

18、d, either by publication of an identical text or by endorsement, at the latest by April 2015 and conflicting national standards shall be withdrawn at the latest by April 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN an

19、d/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12186:2000. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. Annex B provides details of significant t

20、echnical changes between this European Standard and the previous edition. There is a complete suite of functional standards prepared by CEN/TC 234 “Gas Infrastructure“ to cover all parts of the gas infrastructure from the input of gas into the on-shore transmission network up to the inlet connection

21、 of gas appliances, including transmission, distribution, storage, compression, pressure regulation and metering, installation, injection of non-conventional gases, gas quality issues and others. In preparing this European Standard, a basic understanding of gas infrastructure by the user has been as

22、sumed. The gas infrastructure is complex and the importance on safety of its construction and use has led to the development of very detailed codes of practice and operating manuals in the member countries. These detailed statements embrace recognized standards of gas engineering and the specific re

23、quirements imposed by the legal structures of the member countries. As gas pressure regulating stations for transmission and distribution are specifically designed for pipelines, they are considered as annexed equipment, and as such are excluded from the scope of the Directive 97/23/EC (Pressure Equ

24、ipment Directive PED 11). However, standard pressure equipment installed in these stations, e.g. gas pressure regulators, safety valves, valves, filters, heat exchangers, vessels, is covered by the directive 15. Directive 2009/73/EC 13 concerning common rules for the internal market in natural gas a

25、nd the related Regulation (EC) No 715/2009 14 on conditions for access to the natural gas transmission networks also aim at technical safety (security) including technical reliability of the European gas system. These aspects are also in the scope of CEN/TC 234 standardization. In this respect CEN/T

26、C 234 evaluated the indicated EU legislation and amended this technical standard accordingly, where required and appropriate. In this edition of EN 12186 environmental aspects relevant to the design, construction and testing, operation and maintenance, decommissioning and disposal of gas pressure re

27、gulating stations are covered in accordance with CEN Guide 4 and CEN/TR 16388. This European Standard specifies common basic principles for the gas infrastructure. Users of this European Standard should be aware that more detailed national standards and/or codes of practice can exist in the CEN memb

28、er countries. This European Standard is intended to be applied in association with these national standards and/or codes of practice setting out the basic principles as outlined in Clause 1 of this European Standard. BS EN 12186:2014EN 12186:2014 (E) 5 In the event of conflicts in terms of more rest

29、rictive requirements in national legislation/regulation with the requirements of this standard, the national legislation/regulation takes precedence as illustrated in CEN/TR 13737-1 and CEN/TR 13737-2. CEN/TR 13737 gives: clarification of all legislations/regulations applicable in a member state; if

30、 appropriate, more restrictive national requirements; a national contact point for the latest information. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cro

31、atia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav 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

32、the United Kingdom. BS EN 12186:2014EN 12186:2014 (E) 6 1 Scope This European Standard contains the relevant functional requirements for gas pressure regulating stations, which form part of gas transmission or distribution systems. It is applicable to the design, materials, construction, testing, op

33、eration and maintenance of gas pressure regulating stations. This European Standard does not apply to gas pressure regulating stations commissioned prior to the publication of this standard. The stations covered by this European Standard have a maximum upstream operating pressure which does not exce

34、ed 100 bar. For higher maximum upstream operating pressures this standard should be used as a guideline. If the inlet pipework of the station is a service line and the maximum upstream operating pressure does not exceed 16 bar and the design flow rate is equal to or less than 200 m3/h under normal c

35、onditions, EN 12279 applies. Basic system requirements for gas pressure regulating stations are contained in this European Standard. Requirements for individual components (valves, regulators, safety devices, pipes, etc.) or installation of the components are contained in the appropriate European St

36、andards. NOTE For combined regulating and measuring stations, the additional requirements of EN 1776 can apply. The requirements in this European Standard do not apply to the design and construction of auxiliary facilities such as sampling, calorimetering, odorization systems and density measuring.

37、These facilities are covered by the appropriate European Standards, where existing, or other relevant standards. The requirements of this European Standard are based on good gas engineering practice under conditions normally encountered in the gas industry. Requirements for unusual conditions cannot

38、 be specifically provided for, nor are all engineering and construction details prescribed. The requirements in this European Standard are based on the physical and chemical data of gaseous fuels including non-conventional gases in accordance with Table 1 of EN 437:2003+A1:2009 for first and second

39、family gases. Additional requirements in the case of gaseous fuels heavier than air and/or sour gases are not covered by this European Standard. The objective of this European Standard is to ensure the safe operation of such stations. This does not, however, relieve all concerned of the responsibili

40、ty for taking the necessary care and applying effective quality management during the design, construction and operation. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references,

41、only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 334, Gas pressure regulators for inlet pressures up to 100 bar EN 437:2003+A1:2009, Test gases - Test pressures - Appliance categories EN 1127-1, Explosive atm

42、ospheres - Explosion prevention and protection - Part 1: Basic concepts and methodology EN 1594, Gas infrastructure - Pipelines for maximum operating pressure over 16 bar - Functional requirements BS EN 12186:2014EN 12186:2014 (E) 7 EN 1775, Gas supply - Gas pipework for buildings - Maximum operatin

43、g pressure less than or equal to 5 bar - Functional recommendations EN 10204, Metallic products - Types of inspection documents EN 12007-1, Gas infrastructure - Pipelines for maximum operating pressure up to and including 16 bar - Part 1: General functional requirements EN 12327, Gas infrastructure

44、- Pressure testing, commissioning and decommissioning procedures - Functional requirements EN 12732, Gas infrastructure - Welding steel pipework - Functional requirements EN 13463-1, Non-electrical equipment for use in potentially explosive atmospheres - Part 1: Basic method and requirements EN 1438

45、2, Safety devices for gas pressure regulating stations and installations - Gas safety shut-off devices for inlet pressures up to 100 bar EN 15001-1, Gas Infrastructure - Gas installation pipework with an operating pressure greater than 0,5 bar for industrial installations and greater than 5 bar for

46、industrial and non-industrial installations - Part 1: Detailed functional requirements for design, materials, construction, inspection and testing EN 16348, Gas infrastructure - Safety Management System (SMS) for gas transmission infrastructure and Pipeline Integrity Management System (PIMS) for gas

47、 transmission pipelines - Functional requirements EN 60079-10-1, Explosive atmospheres - Part 10-1: Classification of areas - Explosive gas atmospheres EN 60079-14, Explosive atmospheres - Part 14: Electrical installations design, selection and erection EN 62305-1, Protection against lightning - Par

48、t 1: General principles EN 62305-2, Protection against lightning - Part 2: Risk management EN 62305-3, Protection against lightning - Part 3: Physical damage to structures and life hazard EN 62305-4, Protection against lightning - Part 4: Electrical and electronic systems within structures CEN/TS 15

49、399, Gas Supply Systems - Guidelines for Management systems for Gas Distribution Network 3 Terms, definitions, symbols and abbreviations For the purposes of this document, the following terms, definitions, symbols and abbreviations apply. 3.1 General 3.1.1 authorized person competent person who is appointed to fulfil a given task on gas pressure regulating stations Note 1 to entry: The appointment procedure is defined in each member country. 3.1.2 competent person person who is trained, experienced and approved to perform activities relating to gas pressu