EN 14678-2-2007 en LPG equipment and accessories - Construction and performance of LPG equipment for automotive filling stations - Part 2 Components other than dispensers and insta.pdf

1、BRITISH STANDARD BS EN 14678-2:2007LPG equipment and accessories Part 2: Components other than dispensers and installation requirementsICS 75.200nullnull nullnullnullnullnullnullnull nullnullnullnullnullnullnull nullnullnull nullnullnullnullnullnullnullnullnullnull nullnullnullnullnullnull nullnull

2、nullnullnullnullnullnullnullnullnull nullnull nullnullnullnullnullnullnullnullnull nullnullnullConstruction and equipment forperformance of LPGautomotive fillingstations+A1:2012BS EN 14678-2:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on

3、 31 October 2007 ISBN 978 0 580 75820 1National forewordThis British Standard is the UK implementation of EN 14678-2:2007+A1:2012.The UK participation in its preparation was entrusted to Technical Committee PVE/19, LPG containers and their associated fittings.A list of organizations represented on t

4、his committee can be obtained on request to its secretary.This 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 immunity from legal obligations.+A1:2012It supersedes B

5、S EN 14678-2:2007, which is withdrawn.The British Standards Institution 2012. Publishedby BSI Standards Limited 2012.Amendments/corrigenda issued since publicationDate Comments 31 March 2012 Implementation of CEN amendment A1:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14678-2:2007+A1 F

6、ebruary 2012 ICS 75.200 Supersedes EN 14678-2:2007English Version LPG equipment and accessories - Construction and performance of LPG equipment for automotive filling stations - Part 2: Components other than dispensers and installation requirements quipements pour GPL et leurs accessoires - quipemen

7、ts devant tre utiliss dans les stations-service GPL - Partie 2 : Composants autres que les distributeurs, et exigences dinstallation Flssiggas-Gerte und Ausrstungsteile - Bau- und Arbeitsweise von Flssiggas-Gerten fr Autogas-Tankstellen - Teil 2: Bauteile, auer Zapfsulen, und Anforderungen an die Au

8、fstellung This European Standard was approved by CEN on 11 August 2007 and includes Amendment 1 approved by CEN on 26 December 2011. 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

9、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

10、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

11、public, Denmark, Estonia, Finland, 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

12、EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14678-2:2007+A1:2012: E2 Contents Page Foreword 31 Scope 42 Normative

13、 references 43 Terms and definitions .54 Requirements .64.1 General 64.2 Design pressure .74.3 Design temperature .74.4 Materials .74.5 Corrosion protection .74.5.1 General 74.5.2 Cathodic protection .84.6 Storage !pressure vessel“ 84.6.1 Design .84.6.2 Installation 94.6.3 Equipping .94.6.4 !Pressur

14、e vessel“ protection 94.7 Pumping units 94.7.1 General 94.7.2 Submersible pump.94.7.3 External pump . 104.8 Dispensers . 104.8.1 General . 104.8.2 Dispenser protection 104.8.3 Pipe and hose break protection 104.9 Pipe-work and connections . 104.9.1 Pipe-work . 104.9.2 Pipe joints and connections 114

15、.9.3 Jointing compounds 114.10 Valves and pressure indication . 114.10.1 Shut-off valves 114.10.2 Hydrostatic relief valves 124.10.3 Pressure indication. 124.11 Electrical installation 124.11.1 General . 124.11.2 Emergency Shut Down system (ESD) 124.12 Permanent remote assistance . 135 Signs 136 Tes

16、ting of the installation 136.1 Pressure test . 136.2 Leak test 136.3 Test interpretation 147 Commissioning of the installation 14Annex A (informative) Explanatory drawings 15Bibliography . 19BS EN 14678-2:2007+A1:2012EN 14678-2:2007+A1:2012 (E)3 Foreword This document (EN 14678-2:2007+A1:2012) has b

17、een prepared by Technical Committee CEN/TC 286 “Liquefied petroleum gas equipment and accessories”, the secretariat of which is held by NSAI. 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 August

18、 2012, and conflicting national standards shall be withdrawn at the latest by August 2012. 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 rig

19、hts. This document includes Amendment 1 approved by CEN on 2011-12-26. This document supersedes EN 14678-2:2007. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. EN 14678, LPG equipment and accessories Construction and performance of LPG equipment

20、for automotive filling stations consists of the following parts: Part 1: Dispensers Part 2: Components other than dispensers, and installation requirements According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this E

21、uropean Standard: Austria, Belgium, Bulgaria, Croatia, 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, Switzerland, T

22、urkey and the United Kingdom. BS EN 14678-2:2007+A1:2012 EN 14678-2:2007+A1:2012 (E)4 1 Scope This European Standard covers the installation requirements, on fixed LPG filling stations and on multi-fuel filling stations, for the automotive LPG equipment and components, which are required to safely d

23、ispense automotive LPG. This European Standard does not cover on-site and off-site safety distances. NOTE Users of this European Standard should be aware that National regulations may be in place covering all or some of the requirements of this European Standard. National regulations over-ride any r

24、equirement in this European Standard in the states where they apply. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced do

25、cument (including any amendments) applies. EN 549, Rubber materials for seals and diaphragms for gas appliances and gas equipment EN 751-2, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water Part 2: Non-hardening jointing compounds. EN 751-3, S

26、ealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water Part 3: Unsintered PTFE tapes EN 837-1, Pressure gauges Part 1: Bourdon tube pressure gauges Dimensions, metrology, requirements and testing EN 1092-1, Flanges and their joints Circular flanges

27、for pipes, valves, fittings and accessories, PN designated Part 1: Steel flanges EN 1983, Industrial valves Steel ball valves EN 10226-1, Pipe threads where pressure tight joints are made on the threads Part 1: Taper external threads and parallel internal threads Dimensions, tolerances and designati

28、on !EN 12542, LPG equipment and accessories Static welded steel cylindrical tanks, serially produced for the storage of Liquefied Petroleum Gas (LPG) having a volume not greater than 13 m Design and manufacture“ !EN 13445 (all parts), Unfired pressure vessels“ EN 13463-1, Non-electrical equipment fo

29、r potentially explosive atmospheres Part 1: Basic methodology and requirements. CEN/TS 13547, Industrial valves Copper alloy ball valves EN 13709, Industrial valves Steel globe and globe stop and check valves EN 13789, Industrial valves Cast iron globe valves EN 14570, Equipping of LPG tanks overgro

30、und and underground EN 14678-1:2006, LPG equipment and accessories Construction and performance of LPG equipment for automotive filling stations Part 1: Dispensers BS EN 14678-2:2007+A1:2012 EN 14678-2:2007+A1:2012 (E)5 EN 15257, Cathodic protection Competence levels and certification of cathodic pr

31、otection personnel EN 60079-10, Electrical apparatus for explosive gas atmospheres Part 10: Classification of hazardous areas (IEC 60079-10:2002) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. !3.1 Liquefied Petroleum Gas LPG one or more light h

32、ydrocarbons which are assigned to UN 1011, UN 1075, UN 1965, UN 1969 or UN 1978 only and which consists mainly of propane, propene, butane, butane isomers, butene with traces of other hydrocarbon gases NOTE For automotive LPG specification see EN 589.“ 3.2 non-return valve !valve designed to close a

33、utomatically to restrict reverse flow“ 3.3 excess flow valve valve designed to close automatically, with a small residual flow, when the fluid flow passing through it exceeds a predetermined value, and to re-open when the pressure differential across the valve has been restored below a certain value

34、 3.4 pressure relief valve self-closing valve which automatically, without the assistance of any energy other than that of the vapour concerned, discharges vapour at a predetermined pressure, and operates with a pop action 3.5 hydrostatic relief valve !self-closing valve which automatically, without

35、 the assistance of any energy other than that of the fluid concerned, discharges fluid at a predetermined pressure“ 3.6 shear valve normally open valve activated by impact, which closes both sides of the break point to prevent flow and remains closed after activation 3.7 shut-off valve valve to prov

36、ide a leak-tight seal which is operated either manually, remotely or is self-closing 3.8 contents gauge !device to indicate the liquid level or contents in a pressure vessel“ 3.9 !mounded vessel pressure vessel above or partially underground of which the part above the ground is completely covered“

37、3.10 !underground vessel vessel below the surrounding ground level and completely covered“ BS EN 14678-2:2007+A1:2012 EN 14678-2:2007+A1:2012 (E)6 3.11 !overground vessel pressure vessel above the surrounding ground level and not covered“ 3.12 submersible pump pump which is completely or partially i

38、mmersed in the liquid LPG 3.13 external pump pump which is installed on the LPG delivery pipe-work 3.14 hazardous area !area in which an explosive atmosphere is or may be present, in a quantity such as to require special precautions for the construction and installation of equipment and use of appar

39、atus“ 3.15 dispenser delivery and measuring unit for LPG in the liquid phase (see EN 14678-1) 3.16 breakaway coupling coupling which separates at a predetermined section when required and each separated section contains a self closing shut-off valve which seals automatically 3.17 break point weakene

40、d section in a pipe or fitting intended to break when excessive force is applied 3.18 installer person or organization who, by qualification, training, experience and resources assumes technical responsibility for the installation of an LPG filling station !3.19 unattended filling station self-servi

41、ce filling station that is not supervised by on-site personnel“ !3.20 pressure vessel assembly of the pressure-retaining envelope (including the openings and their closures) and non-pressure-retaining parts attached directly to it“ 4 Requirements 4.1 General The design of the installation shall take

42、 into account stresses resulting from internal and external loads such as pressure, thermal expansion, contraction and vibration. The installer shall be provided with a drawing of the layout of the installation on which the hazardous areas are shown including their classification in accordance with

43、EN 60079-10. Only components suitable for the selected hazardous area shall be installed. All components required for operational and emergency purposes shall be easily accessible. BS EN 14678-2:2007+A1:2012 EN 14678-2:2007+A1:2012 (E)7 All remotely operated shut-off valves shall be of the normally

44、closed type. All equipment and components shall be installed according to the manufacturers instructions and tested according to the procedures described in Clause 6 and Clause 7. Overground equipment shall be: secured to prevent excessive movement of pipes; located to reduce the possibility of impa

45、ct damage from vehicles or mobile equipment; protected with bollards or barriers, where necessary. 4.2 Design pressure The design pressure for the parts subject to pressure, other than the !pressure vessel“ and its pressure relief valve, shall be at least 2 500 kPa (25 bar). 4.3 Design temperature T

46、he maximum design temperature shall be + 40 C. The minimum design temperature shall be 20 C. For operating conditions outside the above range, different design temperature(s) shall be agreed with the manufacturer and suitably marked. 4.4 Materials Materials in contact with LPG shall be compatible wi

47、th automotive LPG. Materials exposed to corrosive environments shall be corrosion resistant or protected against corrosion. Other materials used shall meet the design requirements of this European Standard. Non-conductive materials exposed to potentially explosive atmospheres, which are susceptible

48、to electrostatic charge, shall comply with EN 13463-1. NOTE 1 Further information on electrostatics is given in CENELEC Report CLC/TR 50404. All elastomeric materials in contact with LPG shall be compatible with automotive LPG and shall not distort, harden or adhere to other components to such an ex

49、tent as to impair the function of those components. Rubber materials shall conform to EN 549. NOTE 2 For guidance see EN ISO 11114-2. 4.5 Corrosion protection 4.5.1 General 4.5.1.1 Pipe-work, pipe fittings and components shall be constructed from materials which shall not be degraded by the external environment in which the material is used (e