1、October 2012 Translation by DIN-Sprachendienst.English price group 11No 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).IC
2、S 91.140.40!$“1919801www.din.deDDIN EN 12327Gas infrastructure Pressure testing, commissioning and decommissioning procedures Functional requirements;English version EN 12327:2012,English translation of DIN EN 12327:2012-10Gasinfrastruktur Druckprfung, In- und Auerbetriebnahme Funktionale Anforderun
3、gen;Englische Fassung EN 12327:2012,Englische bersetzung von DIN EN 12327:2012-10Infrastructures gazires Essais de pression, modes opratoires de mise en service et de mise hors service desrseaux Prescriptions fonctionnelles;Version anglaise EN 12327:2012,Traduction anglaise de DIN EN 12327:2012-10Su
4、persedesDIN EN 12327:2000-08www.beuth.deDocument comprises 21 pagesIn case of doubt, the German-language original shall be considered authoritative.10.12 DIN EN 12327:2012-10 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 234
5、“Gas infrastructures” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Gastechnik (Gas Technology Standards Committee), Working Committee NA 032-02-02 AA Gasverteilung. This European Standard describes common principles for pressure testing
6、, commissioning and decommissioning of gas infrastructures as covered by the functional European Standards of Technical Committee CEN/TC 234, see Annex B. They have been extracted from the detailed codes of practice and operating manuals in the member countries. This European Standard does not cover
7、 installation pipework which is covered by EN 1775. The specified procedures are applicable to strength testing, tightness testing and combined testing. Test pressure levels, test periods and acceptance criteria are not covered by this European Standard. Additional measures or different methods of t
8、esting, commissioning or decommissioning can be required by legislation of the individual member countries or at the discretion of the pipeline operator. In Germany, DVGW G 469, G 465-2 and G 466-1 apply to the gas infrastructure covered by the present standard. These technical rules contain detaile
9、d specifications supplementing the requirements of the present standard. This standard has been included in the body of technical rules and standards for gas issued by the DVGW Deutscher Verein des Gas- und Wasserfaches e.V. (German Technical and Scientific Association for Gas and Water). Amendments
10、 This standard differs from DIN EN 12327:2000-08 as follows: a) in the title of the German version, the term Empfehlung has been replaced by Anforderung (requirement); b) the standard has been revised in form and substance; c) in Subclause 4.1, further requirements for the pressure measurement equip
11、ment have been included. Previous editions DIN EN 12327: 2000-08 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12327 August 2012 ICS 91.140.40 Supersedes EN 12327:2000 English Version Gas infrastructure Pressure testing, commissioning and decommissioning procedures Functional requirements Inf
12、rastructures gazires Essais de pression, modes opratoires de mise en service et de mise hors service des rseaux Prescriptions fonctionnelles Gasinfrastruktur Druckprfung, In- und Auerbetriebnahme Funktionale Anforderungen This European Standard was approved by CEN on 24 May 2012. CEN members are bou
13、nd 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 bibliographical references concerning such national standards may be obtained on application to the C
14、EN-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 of a CEN member into its own language and notified to the CEN-CENELEC Management Centre
15、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 Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
16、Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012
17、 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12327:2012: E EN 12327:2012 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Terms and definitions .53.1 General terminology 63.2 Pressure related term
18、inology .74 Pressure testing .84.1 General .84.2 Classification of test methods .94.3 Hydrostatic testing 104.3.1 General 104.3.2 Hydrostatic test methods . 104.3.3 Water disposal . 114.4 Pneumatic testing 114.4.1 General 114.4.2 Pneumatic test methods 114.5 Leak detection . 124.6 Test report 125 Co
19、mmissioning and decommissioning 135.1 General/planning 135.2 Commissioning 145.3 Decommissioning 15Annex A (informative) Purging criteria . 16Annex B (informative) List of CEN/TC 234 European Standards 19DIN EN 12327:2012-10EN 12327:2012 (E) 3 Foreword This document (EN 12327:2012) has been prepared
20、 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 the latest by February 2013, and conflicting national standards
21、shall be withdrawn 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. This document supersedes EN 12327:2
22、000. 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 Yugoslav Republic of Macedonia, France
23、, 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 12327:2012-10EN 12327:2012 (E) 4 Introduction There is a complete suite of
24、functional standards prepared by CEN/TC 234, “Gas infrastructure“ to cover all parts of the gas infrastructure from the point of input of gas to the transmission system up to the inlet connection of the gas appliances, whether for domestic, commercial or industrial purposes. In addition, a new EN Wo
25、rk Item is being prepared by CEN/TC 234/WG 10, “Gas Service Lines“. In preparing this European Standard a basic understanding of gas supply by the user has been assumed. Gas infrastructures are complex and the importance on safety of their construction and use has led to the development of very deta
26、iled 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. DIN EN 12327:2012-10EN 12327:2012 (E) 5 1 Scope This European Standar
27、d describes common principles for pressure testing, commissioning and decommissioning of gas infrastructures as covered by the functional European Standards of the Technical Committee CEN/TC 234, see Annex B. They have been extracted from the detailed codes of practice and operating manuals in the m
28、ember countries. This European Standard does not cover installation pipework which is covered by EN 1775. The specified procedures are applicable to strength testing, tightness testing and combined testing. Test pressure levels, test periods and acceptance criteria are not covered by this European S
29、tandard. Additional measures or different methods of testing, commissioning or decommissioning can be required by legislation of the individual member countries or at the discretion of the pipeline operator. This European Standard specifies common basic principles for gas infrastructure. Users of th
30、is European Standard should be aware that more detailed national standards and/or code of practice may exist in the CEN member countries. This European Standard is intended to be applied in association with these national standards and/or codes of practice setting out the above-mentioned basic princ
31、iples. In the event of conflicts in terms of more restrictive requirements in national legislation/regulation with the requirements of this European Standard, the national legislation/regulation should take precedence as illustrated in CEN/TR 13737 (all parts). CEN/TR 13737 (all parts) give: clarifi
32、cation of all legislations/regulations applicable in a member state; if appropriate, more restrictive national requirements; a national contact point for the latest information. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are i
33、ndispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 837-1, Pressure gauges Part 1: Bourdon tube pressure gauges Dimensions, metrology, requirements and tes
34、ting EN 837-2, Pressure gauges Part 2: Selection and installation recommendations for pressure gauges EN 837-3, Pressure gauges Part 3: Diaphragm and capsule pressure gauges Dimensions, metrology, requirements and testing 3 Terms and definitions For the purposes of this document, the following terms
35、 and definitions apply. DIN EN 12327:2012-10EN 12327:2012 (E) 6 3.1 General terminology 3.1.1 gas infrastructure pipeline systems including pipework and their associated stations or plants for the transmission and distribution of gas 3.1.2 authorized person competent person who is appointed to fulfi
36、l a given task on gas infrastructure 3.1.3 competent person person who is trained, experienced and approved to perform activities relating to gas infrastructures Note 1 to entry: Means of approval, if any, will be determined within each member country. 3.1.4 competent authority body authorized by th
37、e member country to ensure that the pipeline operator fulfils the requirements of this and other relevant standards 3.1.5 pipeline operator private or public organization authorized to design, construct and/or operate and maintain the gas infrastructure 3.1.6 pipework assembly of pipes and fittings
38、3.1.7 pipeline system of pipework with all associated equipment and stations up to the point of delivery Note 1 to entry: This pipework is mainly below ground but includes also aboveground parts. 3.1.8 point of delivery point of a gas network where the gas is transferred to the user Note 1 to entry:
39、 This can be at a means of isolation (e.g. at the outlet of a LPG storage vessel) or at a meter connection. Note 2 to entry: For this European Standard, the point of delivery is typically nominated by the distribution system operator and may be defined in National Regulations or Codes of Practice. 3
40、.1.9 strength test specific procedure to verify that the pipework and/or station meets the requirements for mechanical strength 3.1.10 tightness test specific procedure to verify that the pipework and/or station meets the requirements for tightness 3.1.11 combined test specific procedure to verify t
41、hat the pipework and/or station meets the requirements for mechanical strength and tightness DIN EN 12327:2012-10EN 12327:2012 (E) 7 3.1.12 lower explosive limit LEL concentration of flammable gas or vapour in air, below which the gas atmosphere is not explosive 3.1.13 commissioning activities requi
42、red to pressurise pipework, stations, equipment and assemblies with gas and to put them into operation 3.1.14 decommissioning activities required to take out of service any pipework, station, equipment or assemblies filled with gas and to disconnect them from the system 3.1.15 purging process for sa
43、fely removing air or inert gas from pipework and/or pipeline components and replacing it with gas, or the reverse process Note 1 to entry: A distinction is made between the following methods: direct purging is the displacement of air by gas or vice versa; indirect purging is the displacement of air
44、by inert gas followed by the displacement by gas or vice versa. Note 2 to entry: Alternatively by means of a barrier (a slug of inert gas or a pig) between the air and the gas or vice versa. 3.2 Pressure related terminology 3.2.1 design pressure DP pressure on which design calculations are based 3.2
45、.2 operating pressure OP pressure which occurs within a system under normal operating conditions 3.2.3 maximum operating pressure MOP maximum pressure at which a system can be operated continuously under normal operating conditions Note 1 to entry: Normal operating conditions are: no fault in any de
46、vice or stream. 3.2.4 maximum incidental pressure MIP maximum pressure which a system can experience during a short time, limited by the safety devices DIN EN 12327:2012-10EN 12327:2012 (E) 8 4 Pressure testing 4.1 General 4.1.1 The implementation of the requirements for pressure testing shall be pe
47、rformed by an authorized person. 4.1.2 The pressure of a strength test or combined test shall be higher than the maximum incidental pressure (MIP) of the system. The pressure of the tightness test, which will normally be carried out after the strength test, can be below the MIP of the system. The ti
48、ghtness test pressure shall be at least the operating pressure of the system where no previous strength test has been carried out, as in the case of: short extensions of existing pipework; and connections between new and existing systems, where joints are exposed for testing. All pressure levels are gauge pressures (relative pressures) measured at the prevailing atmospheric pressure. 4.1.3 A written procedure shall be prepared by the pipeline operator o
