1、BSI Standards PublicationBS EN 14570:2014LPG equipment and accessories Equipping of overgroundand underground LPG vesselsBS EN 14570:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 14570:2014. Itsupersedes BS EN 14570:2005 which is withdrawn.The UK particip
2、ation in its preparation 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. U
3、sers are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 79014 0ICS 23.020.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of
4、 theStandards Policy and Strategy Committee on 30 April 2014.Amendments issued since publicationDate Text affectedBS EN 14570:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14570 April 2014 ICS 23.020.30 Supersedes EN 14570:2005English Version LPG equipment and accessories - Equipping of o
5、verground 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 fr Flssiggas (LPG) This European Standard was approved by CEN on 4
6、 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 bibliographical references concerning such national standards may
7、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 of a CEN member into its own language and notified to
8、 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 Macedonia, France, Germany, Greece, Hungary, Iceland,
9、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 EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management
10、 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 14570:2014 EBS EN 14570:2014EN 14570:2014 (E) 2 Contents Page Foreword 4 Introduction .5 1 Scope 6 2 Normative references 6 3 Terms, de
11、finitions 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 and gaskets . 10 5 Operational functions . 10 5.1 General . 10 5.2 Pressure relief . 11 5.2.1 Ge
12、neral . 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 level gauge . 13 5.5.3 Overfill protection device . 13 5.6 Filling system 13 5.7 Vapour off-take 1
13、3 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 Earthing . 15 6 Equipping 15 6.1 General . 15 6.2 Screwed joints . 15 6.3 Flanged joints 15 7 C
14、hecking 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 BS EN 14570:2014EN 14570:2014 (E) 3 Annex A (informative) Examples of alternative means of over pressure protection
15、 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.2.2 Above ground pressure vessels 19 B.2.3 Underground/fully mounded pressure vessels 19 B.2.4 Semi
16、-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 BS EN 14570:2014EN 14570:2014 (E) 4 Foreword This document (EN 14570:2014) has been prepared by Technical Committee CEN/TC 286 “L
17、iquefied 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 October 2014, and conflicting national standards shall
18、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 responsible for identifying any or all such patent rights. This document supersedes EN 14570:2005. Th
19、is 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 relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. The main
20、 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 September 2006 included in new standard : paragraph 5.5.1 modified by addition of “or” at the end of t
21、he 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, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic
22、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. BS EN 14570:2014EN 14570:2014 (E) 5 Introduction This European
23、 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 user from legal obligations relating to health and safety at any stage. Protection of the environment is a
24、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, including expenditure of energy and during all phases from mining of raw materials, fabrication, packaging,
25、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 series. It has been assumed in the drafting of this European Standard that the execution of its provisions i
26、s entrusted to appropriately qualified and experienced personnel. All pressures are gauge pressure. BS EN 14570:2014EN 14570:2014 (E) 6 1 Scope This European Standard specifies requirements for the equipping of LPG pressure vessels, overground and underground, with a volume not greater than 13 m3man
27、ufactured 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 connections. This European Standard excludes the equipping of depot storage pressure vessels and refrigerated storage v
28、essels. 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 the edition cited applies. For undated references, the latest edition of the referenced document (including a
29、ny 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 751-3:1996, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and h
30、ot 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) having a volume not greater than 13 m - Design and manufacture EN 13175:2003+A2:2007, LPG equipment and acce
31、ssories - 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) pressure vessels EN 14071:2004, Pressure relief valves for LPG tanks - Ancillary equipment EN 14129:2004, Pr
32、essure 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 cylinder valves Manually operated (ISO 15995:2006) 3 Terms, definitions and abbreviations 3.1 Terms and definitio
33、ns 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 are assigned to UN 1011, UN 1075, UN 1965, UN 1969 or UN 1978 only and which consists mainly of propane, prop
34、ene, butane, butane isomers, butene with traces of other hydrocarbon gases BS EN 14570:2014EN 14570:2014 (E) 7 3.1.2 pressure vessel assembly of the pressure envelope (including the openings and their closures) and non-pressure-retaining parts attached directly to it 3.1.3 underground pressure vesse
35、l 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 fixed liquid level gauge control device, such as a dip tube in combination with a vent valve to indicate when a predet
36、ermined 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/or LPG cylinders for distribution 3.1.7 remotely operated operated from a point at least 3 m from the vessel 3.1.8
37、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 for decommissioning, maintenance or in case of an emergency) 3.1.10 vapour service delivery of LPG in its vapour p
38、hase 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 as liquid off-take. 3.1.12 connection boss, flange, pad provided at an opening for the purpose of attaching equip
39、ment 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 BS EN 14570:2014EN 14570:2014 (E) 8 3.1.14 shut-off valve valve to provide a leak-tight seal which is operated either manually, rem
40、otely 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, discharges fluid at a predetermined pressure 3.1.16 filler valve valve system for liquid fill service 3.1.17 overfill protecti
41、on 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 applications, the predetermined amount is 80 % of the water capacity. 3.1.18 mounded vessel pressure vessel above or partially un
42、derground 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 partially covered 3.1.20 pressure relief valve PRV self-closing valve which automatically, without the assistance of any
43、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 ADR. 3.1.21 non-return valve valve designed to close automatically to restrict reverse flow 3.1.22 excess flow valve val
44、ve 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 3.1.23 occasional liquid withdrawal valve normally blanked valv
45、e, 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 BS EN 14570:2014EN 14570:2014 (E) 9 3.1.25 cap component which seals a male connection 3.2 Abbreviations PRV Pressure Relief Va
46、lve PS Maximum allowable pressure PED Pressure Equipment Directive (Directive 97/23/EC) 1 PTFE Polytetrafluoroethylene 4 Pressure vessel equipment 4.1 General Pressure vessel connections, that are not in use or piped up during normal operation, shall be plugged or capped or blanked off (blind flange
47、). 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
48、of underground/mounded pressure vessels, when valves are below the ground/backfill level, the valves shall be enclosed in a suitable access chamber. 4.2 Selection of pressure vessel equipment The selection of pressure vessel equipment is related to the size of the pressure vessel and/or the complexi
49、ty of the operation, and shall match the level of safety required. Pressure vessel equipment shall be rated for the maximum allowable pressure (PS) of the pressure vessel. Pressure vessel equipment shall be selected to meet the design conditions of the pressure vessel and shall be in accordance with EN 13175 (or EN ISO 15995 for manual shut-off valves up to DN 25), EN 13799, EN 14071 and EN 14129, as appropriate. Normal service connections, where the passageway diameter into the pressure vessel is greater than 1,5 mm and up to 3 mm for liquid and 8 mm f
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