1、December 2014 Translation by DIN-Sprachendienst.English price group 17No 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).I
2、CS 23.060.40; 27.060.20; 75.200!%“2278897www.din.deDDIN EN 12186Gas infrastructure Gas pressure regulating stations for transmission and distribution Functional requirements;English version EN 12186:2014,English translation of DIN EN 12186:2014-12Gasinfrastruktur Gas-Druckregelanlagen fr Transport u
3、nd Verteilung Funktionale Anforderungen;Englische Fassung EN 12186:2014,Englische bersetzung von DIN EN 12186:2014-12Infrastructures gazires Postes de dtente rgulation de pression de gaz pour le transport et la distribution Prescriptions fonctionnelles;Version anglaise EN 12186:2014,Traduction angla
4、ise de DIN EN 12186:2014-12SupersedesDIN EN 12186:2006-01 andDIN EN 12186 Corrigendum1:2008-01www.beuth.deDocument comprises 41 pagesIn case of doubt, the German-language original shall be considered authoritative.12.14DIN EN 12186:2014-12 2 A comma is used as the decimal marker. National foreword T
5、his document (EN 12186:2014) has been prepared by Technical Committee CEN/TC 234 “Gas infrastructure” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the DIN-Normenausschuss Gastechnik (DIN Standards Committee Gas Technology), Working Committee NA 032-02-04 A
6、A Anlagentechnik. This standard contains the relevant functional requirements for gas pressure regulating stations, which form part of gas transmission or distribution systems including their safety devices. It is applicable to the design, construction, testing, commissioning, operation, maintenance
7、, documentation, decommissioning and disposal of materials and components. This standard includes safety requirements. This standard does not apply to gas pressure regulating stations commissioned prior to the publication of this standard. More detailed technical rules within the meaning of the scop
8、e of this standard are the DVGW-Arbeitsbltter G 491, G 493-1/2, G 495, G 498 and G 499 and the DVGW-Merkbltter G 440, G 442 and G 494. It is intended to include this standard in the body of technical rules and standards for gas issued by the DVGW Deutscher Verein des Gas- und Wasserfaches e.V. (Germ
9、an Technical and Scientific Association for Gas and Water). Amendments This standard differs from DIN EN 12186:2006-01 and DIN EN 12186 Corrigendum 1:2008-01 as follows: a) this standard has been technically revised, see Annex B; b) normative references and the Bibliography have been updated; c) the
10、 standard has been editorially revised. Previous editions DIN EN 12186: 2000-07, 2006-01 DIN EN 12186 Corrigendum 1: 2008-01 DIN EN 12186:2014-12 3 National Annex NA (informative) Bibliography DVGW body of technical rules and standards for gas Merkblnullter DVGW G 440, Explosionsschutzdokument fr An
11、lagen zur leitungsgebundenen Versorgung der Allgemeinheit mit Gas (Explosion protection document for plants and systems for public gas supply) DVGW G 442, Explosionsgefhrdete Bereiche an Ausblaseffnungen von Leitungen zur Atmosphre an Gasanlagen (Ex-Zones around blow outs) DVGW G 494, Schallschutzma
12、nahmen an Gerten und Anlagen zur Gas-Druckregelung und Gasmessung (Noise protection measures on devices and stations for pressure regulation and flow measurement) Arbeitsblnulltter DVGW G 491, Gas-Druckregelanlagen fr Eingangsdrcke bis einschlielich 100 bar Planung, Fertigung, Errichtung, Prfung, In
13、betriebnahme und Betrieb (Gas pressure regulating stations for inlet pressures up to and including 100bar Design, manufacture, construction, testing, commissioning, and operation) DVGW G 493-1, Qualifikationskriterien fr Planer und Hersteller von Gas-Druckregel- und Messanlagen sowie Biogas-Einspeis
14、eanlagen (Qualification criteria for designers and manufacturers of gas pressure regulating and gas measuring stations and biogas injection plants) DVGW G 493-2, Qualifikationskriterien fr Unternehmen zur Instandhaltung von Gasanlagen (Qualification criteria for companies for the maintenance of gas
15、installations) DVGW G 495, Gasanlagen Instandhaltung (Gas plants and systems Maintenance) DVGW G 498, Druckbehlter in Rohrleitungen und Anlagen zur leitungsgebundenen Versorgung der Allgemeinheit mit Gas (Pressure vessels in gas pipelines and systems for public gas supply) DVGW G 499, Erdgas-Vorwrmu
16、ng in Gasanlagen (Preheating plants for natural gas) DIN EN 12186:2014-12 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12186 October 2014 ICS 23.060.40; 27.060.20; 75.200 Supersedes EN 12186:2000English Version Gas infrastructure - Gas pressure regulating s
17、tations 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-Druckregelanlagen fr Transport und Verteilung - Funktionale Anforderu
18、ngen 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 standard without any alteration. Up-to-date lists and bibliographi
19、cal 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 responsibility
20、 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 Yugoslav Republic of
21、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 EUROPEN DE NORMALISATION
22、 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 EEN 12186:2014 (E) 2 Contents Page Foreword 4 1 Scope 6 2 Normative re
23、ferences 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 Environmental impact 13 6 Layout of the gas pressure regulating station 13 6.1
24、 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 supply . 17 8.3 Gas pre-heating . 17 8.4 Filters, separators, scrubbers . 18 8.5
25、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 Pipework 20 8.12 Welding 21 8.13 Instrumentation pipework 21 8.14 Stress analysis 22
26、 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 9.6 Venting pressure safety devices . 27 9.7 Pressure alarm system 27 9.8 Inst
27、rumentation . 27 9.9 Bypasses . 27 DIN EN 12186:2014-12 EN 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 12.2 Data . 30 12.3 Maintenance . 30 12.4 Training. 31 12.5 Work undertaken .
28、 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 the previous edition . 35 Bibliography 37 DIN EN 12186:2014-12 EN 12186:2014
29、 (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 standard, either by publication of an identical text or by endorsement, at t
30、he 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 and/or CENELEC shall not be held responsible for identifying any or all
31、 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 technical changes between this European Standard and the previous edit
32、ion. 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 of gas appliances, including transmission, distribution, storage, co
33、mpression, 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 assumed. The gas infrastructure is complex and the importance on safety
34、 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 requirements imposed by the legal structures of the member countries. A
35、s 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 Equipment Directive PED 11). However, standard pressure equipment instal
36、led 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 and the related Regulation (EC) No 715/2009 14 on conditions for acces
37、s 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/TC 234 evaluated the indicated EU legislation and amended this technic
38、al 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 regulating stations are covered in accordance with CEN Guide 4 and CEN/
39、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 member countries. This European Standard is intended to be applied in ass
40、ociation with these national standards and/or codes of practice setting out the basic principles as outlined in Clause 1 of this European Standard. DIN EN 12186:2014-12 EN 12186:2014 (E) 5 In the event of conflicts in terms of more restrictive requirements in national legislation/regulation with the
41、 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 appropriate, more restrictive national requirements; a national
42、 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former
43、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 the United Kingdom. DIN EN 12186:2014-12 EN 12186:2014 (E) 6 1 S
44、cope 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, operation and maintenance of gas pressure regulating stations
45、. 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 exceed 100 bar. For higher maximum upstream operating pressures
46、 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 conditions, EN 12279 applies. Basic system requirements for
47、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 Standards. NOTE For combined regulating and measuring station
48、s, 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. These facilities are covered by the appropriate European St
49、andards, 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 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 fo
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