1、July 2014Translation by DIN-Sprachendienst.English price group 12No 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).ICS 23
2、.020.30!%2“2159756www.din.deDDIN EN 14570LPG equipment and accessories Equipping of overground and underground LPG vessels;English version EN 14570:2014,English translation of DIN EN 14570:2014-07Flssiggas-Gerte und Ausrstungsteile Ausrstung von oberirdisch und unterirdisch aufgestellten Behltern fr
3、 Flssiggas (LPG);Englische Fassung EN 14570:2014,Englische bersetzung von DIN EN 14570:2014-07quipements et accessoires GPL quipement des rservoirs sous pression GPL ariens et enterrs;Version anglaise EN 14570:2014,Traduction anglaise de DIN EN 14570:2014-07SupersedesDIN EN 14570:2006-04www.beuth.de
4、In case of doubt, the German-language original shall be considered authoritative.Document comprises 24 pages06.14 DIN EN 14570:2014-072 A comma is used as the decimal marker. National foreword This document (EN 14570:2014) has been prepared by CEN/TC 286 “Liquefied Petroleum Gas equipment and access
5、ories” (Secretariat: NSAI, Ireland). The responsible German body involved in its preparation was the Normenausschuss Druckgasanlagen (Pressurized Gas Installations Standards Committee), Working Committee NA 016-00-06 AA Flssiggas-Gerte und Ausrstung; Spiegelausschuss zu CEN/TC 286. Amendments This s
6、tandard differs from DIN EN 14570:2006-04 as follows: a) terms and definitions have been updated to comply with the new provisions in CEN/TC 286/WG 11; b) the standard has been editorially revised. Previous editions DIN EN 14570: 2005-07, 2006-04 EN 14570 April 2014 ICS 23.020.30 Supersedes EN 14570
7、:2005English Version LPG equipment and accessories - Equipping of overground and underground LPG vessels quipements et accessoires GPL - quipement des rservoirs sous pression GPL ariens et enterrs Flssiggas-Gerte und Ausrstungsteile - Ausrstung von oberirdisch und unterirdisch aufgestellten Behltern
8、 fr Flssiggas (LPG) This European Standard was approved by CEN on 4 February 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
9、 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 any other language made by translation under the r
10、esponsibility 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
11、 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. CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000
12、Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14570:2014 EEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14570:201
13、4 (E) 2 Contents PageForeword 4 Introduction .5 1 Scope 6 2 Normative references 6 3 Terms, definitions and abbreviations 6 3.1 Terms and definitions .6 3.2 Abbreviations .9 4 Pressure vessel equipment 9 4.1 General 9 4.2 Selection of pressure vessel equipment .9 4.3 Screwed joints . 10 4.4 Seals an
14、d gaskets . 10 5 Operational functions . 10 5.1 General . 10 5.2 Pressure relief . 11 5.2.1 General . 11 5.2.2 Isolating devices and manifolds . 12 5.2.3 Vent pipes 12 5.3 Drainage . 12 5.4 Liquid removal system . 12 5.5 Maximum fill indication/control . 13 5.5.1 General . 13 5.5.2 Fixed liquid leve
15、l gauge . 13 5.5.3 Overfill protection device . 13 5.6 Filling system 13 5.7 Vapour off-take 13 5.8 Vapour return 13 5.9 Liquid off-take . 14 5.10 Liquid return 14 5.11 Temperature indication 14 5.12 Pressure indication. 14 5.13 Liquid level indication 14 5.14 Road tanker potential bonding 14 5.15 E
16、arthing . 15 6 Equipping 15 6.1 General . 15 6.2 Screwed joints . 15 6.3 Flanged joints 15 7 Checking and testing . 15 7.1 General . 15 7.2 Leak tightness . 16 7.3 Excess flow valve . 16 7.4 Completion and purging 16 8 Storage, handling and transportation. 16 9 Documentation 17 DIN EN 14570:2014-07E
17、N 14570:2014 (E) 3 Annex A (informative) Examples of alternative means of over pressure protection for underground/mounded pressure vessels . 18 Annex B (normative) Settings and discharge rates for PRVs and hydrostatic relief valves . 19 B.1 Setting . 19 B.2 Discharge rates 19 B.2.1 General . 19 B.2
18、.2 Above ground pressure vessels 19 B.2.3 Underground/fully mounded pressure vessels 19 B.2.4 Semi-mounded pressure vessels 20 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC 21 Bibliography 22 DIN EN 14570:2014-07EN 14570:20
19、14 (E) 4 Foreword This document (EN 14570:2014) 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 of an iden
20、tical 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 not be held
21、 responsible for identifying any or all such patent rights. This document supersedes EN 14570:2005. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationshi
22、p with EU Directive(s), see informative Annex ZA, which is an integral part of this document. The main modifications in comparison to EN 14570:2005 are: update of definitions taking into account the terminology document prepared by TC 286 WG11 (tanks replaced by pressure vessels ,etc); amendment A1
23、September 2006 included in new standard : paragraph 5.5.1 modified by addition of “or” at the end of the a) and b) paragraphs. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Be
24、lgium, 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, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Swit
25、zerland, Turkey and the United Kingdom. DIN EN 14570:2014-07EN 14570:2014 (E) 5 Introduction This European Standard calls for the use of substances and procedures that may be injurious to health if adequate precautions are not taken. It refers only to technical suitability and does not absolve the u
26、ser from legal obligations relating to health and safety at any stage. Protection of the environment is a key political issue in Europe and elsewhere. Protection of the environment is taken in a very broad sense. What is meant is the total life cycle aspects of, e.g. a product on the environment, in
27、cluding expenditure of energy and during all phases from mining of raw materials, fabrication, packaging, distribution, use, scrapping, recycling of materials, etc. It is recommended that companies using this European Standard develop an environmental management policy. For guidance see ISO 14000 se
28、ries. It has been assumed in the drafting of this European Standard that the execution of its provisions is entrusted to appropriately qualified and experienced personnel. All pressures are gauge pressure. DIN EN 14570:2014-07EN 14570:2014 (E) 6 1 Scope This European Standard specifies requirements
29、for the equipping of LPG pressure vessels, overground and underground, with a volume not greater than 13 m3manufactured in accordance with EN 12542 or equivalent and have been hydraulically tested. The equipment covered by this European Standard is directly mounted onto the pressure vessel connectio
30、ns. This European Standard excludes the equipping of depot storage pressure vessels and refrigerated storage vessels. 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, only
31、 the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 751-2:1996, 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
32、751-3:1996, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water Part 3: Unsintered PTFE tapes EN 12542:2010, LPG equipment and accessories - Static welded steel cylindrical tanks, serially produced for the storage of Liquefied Petroleum Gas (LPG
33、) having a volume not greater than 13 m - Design and manufacture EN 13175:2003+A2:2007, LPG equipment and accessories - Specification and testing for Liquefied Petroleum Gas (LPG) tank valves and fittings EN 13799:2012, LPG equipment and accessories - Contents gauges for Liquefied Petroleum Gas (LPG
34、) pressure vessels EN 14071:2004, Pressure relief valves for LPG tanks - Ancillary equipment EN 14129:2004, Pressure relief valves for LPG tanks EN ISO 10497:2010, Testing of valves Fire type-testing requirements (ISO 10497:2010) EN ISO 15995:2010, Gas cylinders Specifications and testing of LPG cyl
35、inder valves Manually operated (ISO 15995:2006) 3 Terms, definitions and abbreviations 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1.1 liquefied petroleum gas LPG low pressure liquefied gas composed of one or more light hydrocarbons which
36、 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 DIN EN 14570:2014-07EN 14570:2014 (E) 7 3.1.2 pressure vessel assembly of the pressure envelope (including the open
37、ings and their closures) and non-pressure-retaining parts attached directly to it 3.1.3 underground pressure vessel pressure vessel below the surrounding ground level and completely covered 3.1.4 overground pressure vessel pressure vessel above the surrounding ground level and not covered 3.1.5 fixe
38、d liquid level gauge control device, such as a dip tube in combination with a vent valve to indicate when a predetermined liquid level has been reached or surpassed 3.1.6 depot storage vessel pressure vessel at an installation where LPG is stored before being transferred into road/rail tankers and/o
39、r LPG cylinders for distribution 3.1.7 remotely operated operated from a point at least 3 m from the vessel 3.1.8 drainage process of removal of residual vessel content 3.1.9 liquid removal withdrawal of LPG from the vessel for a purpose different from the normal use of the LPG (e.g. removal of LPG
40、for decommissioning, maintenance or in case of an emergency) 3.1.10 vapour service delivery of LPG in its vapour phase Note 1 to entry: Vapour service is also referred to as vapour off-take. 3.1.11 liquid service delivery of LPG in its liquid phase Note 1 to entry: Liquid service is also referred to
41、 as liquid off-take. 3.1.12 connection boss, flange, pad provided at an opening for the purpose of attaching equipment piping or pipe fittings 3.1.13 fail-safe shut-off valve valve that automatically returns to its safe position in case of actuating power failure or fire engulfment DIN EN 14570:2014
42、-07EN 14570:2014 (E) 8 3.1.14 shut-off valve valve to provide a leak-tight seal which is operated either manually, remotely or is self-closing 3.1.15 hydrostatic relief valve self-closing valve which automatically, without the assistance of any energy other than that of the fluid concerned, discharg
43、es fluid at a predetermined pressure 3.1.16 filler valve valve system for liquid fill service 3.1.17 overfill protection device OPD device designed to automatically reduce the filling rate to a minimal flow when the fill level reaches a predetermined amount Note 1 to entry: In automotive application
44、s, the predetermined amount is 80 % of the water capacity. 3.1.18 mounded vessel pressure vessel above or partially underground of which the part above the ground is completely covered 3.1.19 semi-mounded vessel pressure vessel above or partially underground of which the part above the ground is par
45、tially covered 3.1.20 pressure relief valve PRV 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 Note 1 to entry: This is known as a “safety valve” in AD
46、R. 3.1.21 non-return valve valve designed to close automatically to restrict reverse flow 3.1.22 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 ac
47、ross the valve has been restored below a certain value 3.1.23 occasional liquid withdrawal valve normally blanked valve, used for occasional liquid withdrawal which is designed to be opened by the engagement of a special connector valve 3.1.24 plug component which seals a female connection DIN EN 14
48、570:2014-07EN 14570:2014 (E) 9 3.1.25 cap component which seals a male connection 3.2 Abbreviations PRV Pressure Relief Valve PS Maximum allowable pressure PED Pressure Equipment Directive (Directive 97/23/EC) 1 PTFE Polytetrafluoroethylene 4 Pressure vessel equipment 4.1 General Pressure vessel con
49、nections, that are not in use or piped up during normal operation, shall be plugged or capped or blanked off (blind flange). A valve may be fitted between the connection and the plug or blind flange. Except for PRVs and level gauges, all operating valves shall be protected from unauthorised operations. This can be achieved by enclosure within a lockable valve cover, secure compound or other suitable means. In the case of underground/mounded pressure vesse
