1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 13799:2012LPG equipment and accessories Contents gauges forLiquefied Petroleum Gas (LPG)pressure vesselsBS EN 13799:2012 BRITISH STANDARDNational forewordThis British Stand
2、ard is the UK implementation of EN 13799:2012. Itsupersedes BS EN 13799:2002 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PVE/19, LPG containers and their associated fittings.A list of organizations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 req
3、uest to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 68256 8ICS 23.020.30Compliance with a British S
4、tandard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2012.Amendments issued since publicationDate Text affectedBS EN 13799:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13799
5、March 2012 ICS 23.020.01 Supersedes EN 13799:2002English Version LPG equipment and accessories - Contents gauges for Liquefied Petroleum Gas (LPG) pressure vessels quipements et accessoires GPL - Jauges de niveau pour les rservoirs de GP Flssiggas-Gerte und Ausrstungsteile - Fllstandsanzeiger fr Dru
6、ckbehlter fr Flssiggas (LPG)This European Standard was approved by CEN on 14 January 2012. 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 l
7、ists 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 any other language made by translation und
8、er 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 Republic, Denmark, Estonia, Finland, France,
9、 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 EUROPEN DE NORMALISATION EUROPISCHES KOMIT
10、EE 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 13799:2012: EBS EN 13799:2012EN 13799:2012 (E) 2 Contents Page Foreword 4Introduction .51 Scope 62 Normative re
11、ferences 63 Terms and definitions .74 Operating conditions .85 Materials .85.1 General 85.2 Metallic materials .85.3 Non-metallic components .95.4 Lubricants, sealants and adhesives 96 Design General requirements 96.1 General 96.2 Seals . 106.3 Springs . 106.4 Threads 106.5 Flanges 117 Design Specif
12、ic requirements . 117.1 Contents gauge . 117.1.1 Float gauge 117.1.2 Rotary gauge . 117.1.3 Fixed liquid level gauge . 117.1.4 Slip tube gauge . 127.2 Dials for contents gauges 128 Design testing . 128.1 General . 128.2 Over-torquing deformation test . 138.3 External tightness test . 148.4 Internal
13、tightness test 148.5 Endurance test 158.6 Pressure strength test 158.7 Stress cracking test 158.7.1 General . 158.7.2 Mercurous nitrate immersion test . 168.7.3 Moist ammonia air stress cracking test . 168.8 Float pressure test 168.9 Dimensional inspection . 168.10 Function test . 168.11 Vacuum test
14、 . 168.12 Float Test . 168.13 Accuracy assessment 179 Production testing and inspection 1710 Marking 1711 Documentation 17Annex A (normative) Float gauge flange and gasket dimensions 19BS EN 13799:2012EN 13799:2012 (E) 3 Annex B (normative) Special low temperature requirements 22Annex C (normative)
15、Production testing and inspection . 23Annex D (informative) Vibration Testing 24D.1 General . 24D.2 Test samples 24D.3 Test method . 24D.4 Criteria for passing the test 25Annex E (informative) Environment checklist 26Bibliography 27BS EN 13799:2012EN 13799:2012 (E) 4 Foreword This document (EN 13799
16、:2012) has been prepared by Technical Committee CEN/TC 286 “LPG 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 September 2012
17、, and conflicting national standards shall be withdrawn at the latest by September 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 right
18、s. This document supersedes EN 13799:2002. 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 relationship with EU Directive(s), see informative Annex ZA, which i
19、s an integral part of this document. For the purposes of this standard, contents gauges are considered a pressure accessory in accordance with the Pressure Equipment Directive 97/23/EC in that they have a function additional to that of containing pressure. However, as they have a volume less than 0,
20、1 l and a maximum allowable pressure (PS) of 25 bar, they are designed and manufactured in accordance with sound engineering practice of a Member State in order to ensure safe use. This document is considered as a supporting European Standard for the Pressure Equipment Directive 97/23/EC. This docum
21、ent has been submitted for reference into the RID and/or in the technical annexes of the ADR. The major changes to this revision include: scope extended to include transportable equipment; gauge graduations and precision included; overfill Protection Device is deleted, now included in EN 13175; test
22、 requirement is included for non-metallic floats; torque test values have been changed; vacuum test and float test have been introduced; Annex C, production testing has been introduced; Annex D, vibration testing has been introduced; Annex E, environmental checklist has been introduced. According to
23、 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lat
24、via, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 13799:2012EN 13799:2012 (E) 5 Introduction Protection of the environment is a key political issue in Europe and around the world. It
25、 is described here in its broadest sense. However, the total life cycle aspects of a product on the environment for example is what is meant. This includes expenditure of energy during all phases: mining of raw materials, fabrication, packaging, distribution, use, scrapping, recycling of materials,
26、etc. NOTE Annex E indicates which clauses in this European Standard address environmental issues. Provisions have to be restricted to a general guidance. Limit values are specified in national laws. It is recommended that companies using this standard develop an environmental management policy. For
27、guidance see ISO 14000 series. BS EN 13799:2012EN 13799:2012 (E) 6 1 Scope This European Standard specifies minimum requirements for design and testing of contents gauges, which are directly connected to LPG transportable pressure vessels, LPG drums, LPG cylinders and static LPG pressure vessels abo
28、ve 0,5 l water capacity excluding those used for automotive containers. This European Standard does not apply to refineries or other process plants. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its applicat
29、ion. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 549:1994, Rubber materials for seals and diaphragms for gas appliances and gas equipment EN 751 -1:1996, Sealing materials for metal
30、lic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water Part 1: Anaerobic jointing compounds 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, Seali
31、ng materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water Part 3: Unsintered PTFE tapes EN 1092-1:2007, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 1: Steel flanges EN 1503-1:2000, Valves Materi
32、als for bodies, bonnets and covers Part 1: Steels specified in European Standards EN 1503-2:2000, Valves Materials for bodies, bonnets and covers Part 2: Steels other than those specified in European Standards EN 1503-3:2000, Valves Materials for bodies, bonnets and covers Part 3: Cast irons specifi
33、ed in European Standards EN 1503-4:2002, Valves Materials for bodies, bonnets and covers Part 4: Copper alloys specified in European Standards EN 1563:1997, Founding Spheroidal graphite cast irons EN 10270-3:2001, Steel wire for mechanical springs Part 3: Stainless spring steel wire EN 12165:2011, C
34、opper and copper alloys Wrought and unwrought forging stock EN 12420:1999, Copper and copper alloys Forgings EN 13906-1:2000, Cylindrical helical springs made from round wire and bar Calculation and design Part 1: Compression springs EN 60079-0, Explosive atmospheres Part 0: Equipment General requir
35、ements ISO 301:2006, Zinc alloy ingots intended for casting ISO 1817:2011, Rubber, vulcanized or thermoplastic Determination of the effect of liquids BS EN 13799:2012EN 13799:2012 (E) 7 ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance qualit
36、y limit (AQL) for lot-by-lot inspection ISO 6957:1988, Copper alloys Ammonia test for stress corrosion resistance ANSI/ASME B1.20.1 1983, Pipe threads, general purpose (inch); issued by American National Standards Institute in 1983 3 Terms and definitions For the purposes of this document, the follo
37、wing terms and definitions apply. 3.1 Liquefied Petroleum Gas LPG low pressure 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, butene with traces of other hy
38、drocarbon gases 3.2 contents gauge device to indicate the liquid level or contents in a pressure vessel 3.2.1 float gauge device to indicate the content of a vessel by means of a float on the liquid surface within the vessel 3.2.2 rotary gauge device which operates through a rotating action in order
39、 to assess the liquid level in a vessel by means of temporarily venting a limited amount of LPG, whereupon the change from liquid to vapour is detected 3.2.3 fixed liquid level gauge control device, such as a dip tube in combination with a vent valve to indicate when a predetermined liquid level has
40、 been reached or surpassed 3.2.4 slip tube device which operates through a linear action in order to assess the liquid level in a pressure vessel by means of temporarily venting a limited amount of LPG, where upon the change from liquid to vapour is detected 3.3 external tightness resistance to leak
41、age through the fitting to or from the atmosphere 3.4 internal tightness resistance to leakage to atmosphere across the valve seat or any other pressure containing component when the valve is closed 3.5 maximum allowable pressure maximum pressure for which the equipment is designed BS EN 13799:2012E
42、N 13799:2012 (E) 8 3.6 nominal diameter DN numerical designation of size, in millimetres, which is common to all components in a piping system other than components designated by outside diameters or by thread size Note 1 to entry: It is a convenient round number for reference purposes and is only l
43、oosely related to manufacturing dimensions. The nominal size is designated by DN followed by a number. 3.7 pressure vessel assembly of the pressure-retaining envelope (including the openings and their closures) and non-pressure-retaining parts attached directly to it 4 Operating conditions Contents
44、gauges designed in accordance with this standard shall be suitable for the following conditions: a minimum operating temperature of -20 C. In service, temperatures below this can be encountered during short periods, for example, when filling; for some parts of Europe and certain applications, temper
45、atures lower than -20 C can be encountered, for these conditions the requirements of Annex B shall be met; the maximum operating temperature is 65 C; the minimum pressure to which a gauge is normally exposed is 0 bar gauge. Vacuum conditions on the gauge, arising from butane at low temperature or ev
46、acuation of the pressure vessel can expose the device to a vacuum of 0,05 bar absolute. The maximum allowable pressure for a contents gauge is 25 bar. 5 Materials 5.1 General 5.1.1 All materials in contact with LPG shall be physically and chemically compatible with LPG under all the normal operating
47、 conditions for which the contents gauge is intended to be used. 5.1.2 Materials for gauge components shall be selected to give adequate strength in service. Materials selected shall adequately protect against other modes of failure such as atmospheric corrosion, brass dezincification, stress corros
48、ion or other material failure. 5.1.3 Alternative materials to those listed in 5.2 are not precluded, providing they comply with a standard or specification that ensures control of chemical and physical properties, and quality appropriate to the end use. 5.2 Metallic materials 5.2.1 Metallic material
49、s for gauges shall be steel, stainless steel, copper alloys, aluminium alloys, zinc alloys or other suitable materials. 5.2.2 For pressure containing components steel and stainless steels shall comply with EN 1503-1:2000 or EN 1503-2:2000, cast iron shall comply with EN 1503-3:2000 and copper alloys shall comply with EN 1503-4:2002. 5.2.3 Materials for steel flanges shall be in accord
