EN 12252-2014 en LPG equipment and accessories - Equipping of LPG road tankers《液化石油气设备及配件 液化气槽罐车的装备》.pdf

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1、BSI Standards PublicationBS EN 12252:2014LPG equipment and accessories Equipping of LPG roadtankersBS EN 12252:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12252:2014. Itsupersedes BS EN 12252:2012 which is withdrawn.The UK participation in its preparati

2、on was entrusted to TechnicalCommittee PVE/19, LPG containers and their associated fittings.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible f

3、or its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 82578 1ICS 43.080.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy a

4、nd Strategy Committee on 30 April 2014.Amendments issued since publicationDate Text affectedBS EN 12252:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12252 April 2014 ICS 43.080.10 Supersedes EN 12252:2012English Version LPG equipment and accessories - Equipping of LPG road tankers quipem

5、ents pour GPL et leurs accessoires - quipements des camions citernes pour GPL Flssiggas-Gerte und Ausrstungsteile - Ausrstung von Straentankwagen fr Flssiggas (LPG) This European Standard was approved by CEN on 9 February 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulation

6、s 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-CENELEC Management Centre or to any CEN member. Th

7、is 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 has the same status as the official versions. CEN mem

8、bers 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, Luxembourg, Malta, Netherlands, Norway, Poland, Portu

9、gal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN 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 fo

10、rm and by any means reserved worldwide for CEN national Members. Ref. No. EN 12252:2014 EBS EN 12252:2014EN 12252:2014 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .7 4 Requirements .9 4.1 General 9 4.2 Equipment 9 4.3 Valve access 10 5 Pr

11、essure vessel. 10 5.1 Design and manufacture 10 5.2 Mounting of pressure vessel on road tanker . 10 6 Pressure vessel accessories . 11 6.1 Required pressure vessel accessories 11 6.2 Optional pressure vessel accessories . 12 7 Vehicle LPG equipment 12 7.1 Mandatory LPG equipment 12 7.2 Optional LPG

12、equipment 13 8 Equipment specifications 14 8.1 Suitable materials . 14 8.2 Contents gauge . 15 8.3 Pressure gauge . 15 8.4 Temperature gauge. 15 8.5 Pump 16 8.6 Hoses . 16 8.7 Hose reel 16 8.8 Earth reel . 17 8.9 Metering system 17 8.10 Valves . 17 8.11 Pressure relief valves(PRV) . 17 9 Assembly .

13、17 9.1 General . 17 9.2 Welding 18 9.3 Flanged connections 18 9.4 Screwed connections . 18 9.5 External corrosion protection . 18 10 Inspection and testing 18 10.1 General . 18 10.2 Hydraulic pressure test 19 10.3 Leak test 19 11 Safety systems 19 11.1 General . 19 11.2 Emergency Shut-Down system(ES

14、D) . 20 12 General safety requirements . 20 Annex A (normative) Discharge rates for pressure relief valves-Discharge capacity . 21 Annex B (informative) Calculation of mountings of pressure vessel to the chassis . 23 Annex C (informative) Environmental Checklist 30 Bibliography . 31 BS EN 12252:2014

15、EN 12252:2014 (E) 3 Foreword This document (EN 12252:2014) has been 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

16、 of an identical text or by endorsement, at the latest by October 2014 and conflicting national standards shall be withdrawn at the latest by October 2014. 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 n

17、ot be held responsible for identifying any or all such patent rights. This document supersedes EN 12252:2012. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This document has been submitted for reference into the techn

18、ical annexes of the ADR 9. NOTE These regulations take precedence over any clause of this European Standard. It is emphasised that RID/ADR/ADN are being revised regularly at intervals of two years which might lead to temporary non-compliances with the clauses of this European Standard. The main tech

19、nical changes of this revision include: the update of definitions; the modification of requirements on the primary shut-off system (see 6.1.3); the modification of the general requirements on the safety system (see 11.1); the correction of an error in the flow calculation units (see Annex A). Accord

20、ing 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, Germany,

21、Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 12252:2014EN 12252:2014 (E) 4 Introduction This European Standard calls for the use of

22、substances and procedures that may be injurious to health and also the environment if adequate precautions are not taken. It refers only to technical suitability; it does not absolve the user from their legal obligations at any stage. Protection of the environment is a key political issue in Europe

23、and elsewhere around the world. Protection of the environment in this document is understood in a very broad sense. The phrase is used, for example, in relation to the total life-cycle aspects of a product on the environment, including expenditure of energy, and during all phases of its existence, f

24、rom mining of raw materials, fabrication, packaging, distribution, use, scrapping, recycling of materials, etc. NOTE 1 Annex C comprises an environmental checklist which highlights the clauses of this European Standard that address environmental issues. Provisions need to be restricted to a general

25、guidance. Limit values are specified in national laws. It is recommended that manufacturers develop an environmental management policy. For guidance see the ISO 14000 series 3, 4 and 5 It has been assumed in the drafting of this European Standard that the execution of its provisions is entrusted to

26、appropriately qualified and experienced people. All pressures are gauge pressures unless otherwise stated. NOTE 2 This European Standard requires measurement of material properties, dimensions and pressures. All such measurements are subject to a degree of uncertainty due to tolerances in measuring

27、equipment etc. It might be beneficial to refer to the leaflet “measurement uncertainty leaflet” SP INFO 2000 27 10. BS EN 12252:2014EN 12252:2014 (E) 5 1 Scope This European Standard specifies equipment and accessories for road tankers used for the transport of Liquefied Petroleum Gas (LPG) and iden

28、tifies the equipment that is considered necessary to ensure that filling, transportation and discharge operations can be carried out safely. It specifies the requirements for the assembly of the accessories and the vehicle LPG equipment to the road tanker. This European Standard also identifies addi

29、tional equipment and accessories that can be used on road tankers carrying LPG. This European Standard does not preclude the use of alternative designs, materials and equipment testing which provide the same or a higher level of safety. ADR 9 requires that such alternative technical codes be recogni

30、sed by the competent authority, provided that the minimum requirements of section 6.8.2 of ADR 9 are complied with. This European Standard does not apply to “tank-containers” or “battery-vehicles” used for the transport of LPG. 2 Normative references The following documents, in whole or in part, are

31、 normatively referenced in this document and are indispensable 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 549, Rubber materials for seals and diaphragms for ga

32、s appliances and gas equipment EN 558, Industrial valves Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems PN and Class designated valves EN 837-2, Pressure gauges Part 2: Selection and installation recommendations for pressure gauges EN 1012-1, Compressors a

33、nd vacuum pumps Safety requirements Part 1: Air compressors EN 1591-1, Flanges and their joints Design rules for gasketed circular flange connections Part 1: Calculation method EN 1762, Rubber hoses and hose assemblies for liquefied petroleum gas, LPG (liquid or gaseous phase), and natural gas up to

34、 25 bar (2,5 MPa) Specification EN 1983, Industrial valves Steel ball valves EN 1984, Industrial valves Steel gate valves EN 10025 (all parts), Hot rolled products of structural steels EN 10028 (all parts), Flat products made of steels for pressure purposes EN 10204:2004, Metallic products Types of

35、inspection documents EN 10216-1, Seamless steel tubes for pressure purposes Technical delivery conditions Part 1: Non-alloy steel tubes with specified room temperature properties EN 10217-1, Welded steel tubes for pressure purposes Technical delivery conditions Part 1: Non-alloy steel tubes with spe

36、cified room temperature properties BS EN 12252:2014EN 12252:2014 (E) 6 EN 12074, Welding consumables Quality requirements for manufacture, supply and distribution of consumables for welding and allied processes EN 12493, LPG equipment and accessories Welded steel pressure vessels for LPG road tanker

37、s Design and manufacture EN 12627, Industrial valves Butt welding ends for steel valves EN 12760, Valves Socket welding ends for steel valves EN 13175, LPG equipment and accessories Specification and testing for Liquefied Petroleum Gas (LPG) tank valves and fittings EN 13709, Industrial valves Steel

38、 globe and globe stop and check valves EN 13789, Industrial valves Cast iron globe valves EN 13799, LPG equipment and accessories Contents gauges for Liquefied Petroleum Gas (LPG) pressure vessels EN 14422, Clamp type coupling assemblies for liquefied petroleum gas (LPG) transfer hoses EN 14424, Hos

39、e fittings with screwed ferrules EN ISO 148-1, Metallic materials Charpy pendulum impact test Part 1: Test method (ISO 148-1) EN ISO 3834-2, Quality requirements for fusion welding of metallic materials Part 2: Comprehensive quality requirements (ISO 3834-2) EN ISO 3834-3, Quality requirements for f

40、usion welding of metallic materials Part 3: Standard quality requirements (ISO 3834-3) EN ISO 9606-1, Qualification testing of welders - Fusion welding - Part 1: Steels (ISO 9606-1) EN ISO 10497, Testing of valves Fire type-testing requirements (ISO 10497) EN ISO 14732, Welding personnel - Qualifica

41、tion testing of welding operators and weld setters for mechanized and automatic welding of metallic materials (ISO 14732) EN ISO 15609-1, Specification and qualification of welding procedures for metallic materials Welding procedure specification Part 1: Arc welding (ISO 15609-1) EN ISO 15614-1, Spe

42、cification and qualification of welding procedures for metallic materials Welding procedure test Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 15614-1) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 l

43、iquefied petroleum gas LPG low pressure liquefied gas composed of one or more light hydrocarbons 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 and butene with traces of other hydrocarbon gases BS EN 1225

44、2:2014EN 12252:2014 (E) 7 3.2 pressure vessel assembly of the pressure-retaining envelope (including the openings and their closures) and non-pressure-retaining parts attached directly to it 3.3 primary shut-off system valve or a series of valves attached to the pressure vessel which provides a meth

45、od of sealing off the flow from the pressure vessel 3.4 vehicle LPG equipment equipment and pipework on the road tanker which is in contact with LPG and forms part of the LPG operating system, shut-down system or safety system, but which is not directly connected to the pressure vessel and is not pa

46、rt of the automotive LPG system 3.5 accessories device connected to the system the main function of which is not for the storage or conveyance of LPG Note 1 to entry: Referred to as “service and structural equipment” in ADR 9. 3.6 thermowell permanently sealed pocket in the vessel/pipework for the t

47、emperature gauge 3.7 pipework pressure containing enclosure used for the conveyance of LPG, consisting of pipe, pipe fittings, valves and other accessories 3.8 road tanker vehicle with a fixed or demountable pressure vessel (tank) having only one compartment Note 1 to entry: Road tankers are referre

48、d to as fixed tanks (tank-vehicles) and demountable tanks in the ADR 9. 3.9 thermal expansion valve self-closing valve which automatically, without the assistance of any energy other than that of the fluid concerned, discharges fluid at a predetermined pressure 3.10 non-return valve valve designed t

49、o close automatically to restrict reverse flow 3.11 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 3.12 shut-off valve valve to provide a leak-tight seal which is operated either manually, remotely or is self-closing BS EN 12252:2014EN 12252:2014 (E) 8 3.13 pressure relief val