1、BSI Standards PublicationBS EN 16728:2016LPG equipment and accessories Transportable refillable LPGcylinders other than traditionalwelded and brazed steelcylinders Periodic inspectionBS EN 16728:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 16728:2016. To
2、gether with BS EN 1440:2016, it supersedes BS EN 1440:2008+A1:2012, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PVE/19, LPG containers and their associated fittings.A list of organizations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 this committee can be obtained on request to
3、 its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 85892 5 ICS 23.020.30 Compliance with a British Stan
4、dard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 16728:2016EUROPEAN STANDARD NORME EUROPENNE EUROP
5、ISCHE NORM EN 16728 March 2016 ICS 23.020.30 Supersedes EN 1440:2008+A1:2012English Version LPG equipment and accessories - Transportable refillable LPG cylinders other than traditional welded and brazed steel cylinders - Periodic inspection quipements pour GPL et leurs accessoires - Bouteilles tran
6、sportables et rechargeables pour GPL autres que celles en acier soud et bras - Contrle priodique Flssiggas-Gerte und Ausrstungsteile - Ortsbewegliche, wiederbefllbare Flaschen fr Flssiggas (LPG), ausgenommen geschweite und hartgeltete Stahlflaschen - Wiederkehrende Inspektion This European Standard
7、was approved by CEN on 2 January 2016. 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
8、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 responsibility of a CEN member into its own l
9、anguage 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 Republic of Macedonia, France, Germany, Gre
10、ece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG
11、CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16728:2016 EBS EN 16728:2016EN 16728:2016 (E) 2 Contents Page European foreword . 4 Introduction 5 1 Scope 6 2 No
12、rmative references 6 3 Terms and definitions . 7 4 Requirements for periodic inspection 8 4.1 General 8 4.2 Steel and aluminium cylinders . 8 4.3 Over-moulded cylinders . 8 4.4 Composite cylinders . 8 4.5 Rejected cylinders . 9 5 Inspections and tests 10 5.1 General . 10 5.2 External visual inspecti
13、on . 10 5.2.1 Preparation for external visual inspection. 10 5.2.2 Inspection procedure . 10 5.2.3 Rejection criteria 11 5.3 Proof pressure test 11 5.3.1 General . 11 5.3.2 Hydraulic proof pressure test 11 5.3.3 Pneumatic proof test and leak test 12 5.4 Check of the internal condition of the cylinde
14、r . 13 5.4.1 Welded aluminium and steel cylinders of alternative design and construction 13 5.4.2 Check of the internal condition of composite cylinders . 14 5.5 Inspection of cylinder threads 14 5.5.1 General . 14 5.5.2 Internal threads 14 5.5.3 External threads . 15 5.5.4 Damaged threads . 15 5.6
15、Inspection of valves . 15 6 Final operations 15 6.1 General . 15 6.2 Valving 15 6.3 Tare mass 15 6.4 Marking 15 6.5 Purging . 16 7 Repair of cylinders . 16 8 Records 16 Annex A (normative) Specific requirements for external visual inspection for welded steel LPG cylinders in accordance with EN 14140
16、 or equivalent standard . 17 A.1 General . 17 A.2 Procedure for establishing rejection criteria carbon steel cylinders . 17 A.3 Rejection criteria for stainless steel cylinders 19 BS EN 16728:2016EN 16728:2016 (E) 3 Annex B (normative) Specific requirements for external visual inspection of welded a
17、luminium LPG cylinders . 22 Annex C (normative) Specific requirements for visual inspection of composite LPG cylinders 25 C.1 Establishment of rejection criteria 25 C.1.1 General . 25 C.1.2 Procedure 25 C.2 Examples of rejection criteria 25 C.2.1 Cylinders without a metallic liner 25 C.2.2 Cylinders
18、 with a metallic liner . 30 Annex D (informative) Conditions for 15-year periodic inspection interval of welded steel cylinders manufactured before 1stJanuary 2015 . 33 D.1 General . 33 D.2 Concept of control. 33 D.3 Conditions . 33 Annex E (informative) Guidance on conditions for 10-year periodic i
19、nspection interval of composite cylinders . 35 Annex F (normative) Specific Periodic inspection procedure for over-moulded cylinders (OMC) 36 F.1 General . 36 F.1.1 Introduction 36 F.1.2 Valve 36 F.1.3 Marking and records . 36 F.2 Periodic inspection 36 F.2.1 General . 36 F.2.2 External visual inspe
20、ction . 37 F.2.2.1 General . 37 F.2.2.2 Sampling 37 F.2.2.2.1 General . 37 F.2.2.2.2 Peeling and corrosion test 37 F.2.2.2.3 Adhesion tests of the polyurethane material . 38 F.2.2.3 Test frequency . 38 F.2.3 Burst test 38 F.2.4 Rejection criteria and annual production sampling 38 F.2.5 Periodic insp
21、ection tests reports and records . 40 F.3 Lifetime 40 Annex G (informative) Example of an Over-Moulded Cylinder . 42 Bibliography . 44 BS EN 16728:2016EN 16728:2016 (E) 4 European foreword This document (EN 16728:2016) has been prepared by Technical Committee CEN/TC 286 “Liquefied petroleum gas equi
22、pment 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 2016, and conflicting national standards shall be withdrawn at the lates
23、t by September 2016. 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 in conjunction with EN 1440:2016 supersedes EN 1440
24、:2008+A1:2012 and deals with the periodic inspection requirements for transportable refillable LPG cylinders that are not covered by EN 1440. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This European Standard has be
25、en submitted for reference into the RID 1 and the technical annexes of the ADR 2. NOTE These regulations take precedence over any clause of this standard. It is emphasized that RID/ADR are being revised regularly at intervals of two years which may lead to temporary non- compliances with the clauses
26、 of this standard. 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 of Mac
27、edonia, 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 16728:2016EN 16728:2016 (E) 5 Introduction The primary objecti
28、ve of the periodic inspection of transportable refillable liquefied petroleum gas (LPG) cylinders is that, on the completion of the tests, the cylinders may be re-introduced into service for a further period of time. The new designs of LPG cylinders have led to the development of alternative methods
29、 of inspection. This European Standard has been prepared to reflect the current methodology for periodic inspection of LPG cylinders, and is based on extensive operating experience. This European Standard calls for the use of substances and procedures that can be injurious to health if adequate prec
30、autions 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 key political issue in Europe and elsewhere, for CEN/TC 286 this is covered in CEN/TS 16765 3, and this T
31、echnical Specification should be read in conjunction with this standard. It has been assumed in the drafting of this European Standard that the execution of its provisions is entrusted to appropriately qualified and experienced people. Where judgements are called for, it has been assumed that they a
32、re made by competent persons who have been specifically trained for the tasks. BS EN 16728:2016EN 16728:2016 (E) 6 1 Scope This European Standard specifies procedures for periodic inspection and testing, for transportable refillable LPG cylinders with a water capacity from 0,5 l up to and including
33、150 l. This European Standard is applicable to the following: welded steel LPG cylinders manufactured to an alternative design and construction, see EN 14140 or equivalent standard; welded aluminium LPG cylinders, see EN 13110 or equivalent standard; composite LPG cylinders, see EN 14427 or equivale
34、nt standard; over-moulded cylinders designed and manufactured according to EN 1442 or EN 14140, see Annex F. NOTE The requirements of RID/ADR take precedence over those of this standard in the case of cylinders complying with that regulation, including pi marked cylinders. This European Standard doe
35、s not apply to cylinders permanently installed in vehicles. 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 la
36、test edition of the referenced document (including any amendments) applies. EN 837-1:1996, Pressure gauges Part 1: Bourdon tube pressure gauges Dimensions, metrology, requirements and testing EN 837-3:1996, Pressure gauges Part 3: Diaphragm and capsule pressure gauges Dimensions, metrology, requirem
37、ents and testing EN 1442, LPG equipment and accessories Transportable refillable welded steel cylinders for LPG Design and construction EN 10028-7, Flat products made of steels for pressure purposes Part 7: Stainless steels EN 12816, LPG equipment and accessories Transportable refillable LPG cylinde
38、rs Disposal EN 13110, LPG equipment and accessories Transportable refillable welded aluminium cylinders for liquefied petroleum gas (LPG) Design and construction EN 14140:2014, LPG equipment and accessories Transportable refillable welded steel cylinders for LPG Alternative design and construction E
39、N 14427:2014, LPG equipment and accessories Transportable refillable fully wrapped composite cylinders for LPG Design and construction EN 14894, LPG equipment and accessories Cylinder and drum marking EN 14912, LPG equipment and accessories Inspection and maintenance of LPG cylinder valves at time o
40、f periodic inspection of cylinders BS EN 16728:2016EN 16728:2016 (E) 7 EN ISO 4628-3:2003, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 3: Assessment of degree of rusting (ISO 4628-3:200
41、3) EN ISO 14245, Gas cylinders Specifications and testing of LPG cylinder valves Self-closing (ISO 14245) EN ISO 15995, Gas cylinders Specifications and testing of LPG cylinder valves Manually operated (ISO 15995) ISO 2859-1:1999, Sampling procedures for inspection by attributes Part 1: Sampling sch
42、emes indexed by acceptance quality limit (AQL) for lot-by-lot inspection ISO 16269-6:2014, Statistical interpretation of data Part 6: Determination of statistical tolerance intervals 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 competent a
43、uthority authority or authorities or any other body or bodies designated as such in each State and in each specific case in accordance with domestic law 3.2 competent person person which by combination of appropriate qualification, training, experience, and resources, is able to make objective judgm
44、ents on the subject 3.3 inspection body independent inspection and testing body approved by the competent authority 3.4 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
45、mainly of propane, propene, butane, butane isomers, butene with traces of other hydrocarbon gases 3.5 over-moulded cylinder OMC coated steel or stainless steel cylinder with a non removable over-moulded protective case in polyurethane or material which provides equivalent protection. 3.6 over-moulde
46、d cylinders inspection lot production of cylinders from a single over-moulding company, using inner cylinders manufactured by one manufacturer, within one calendar year BS EN 16728:2016EN 16728:2016 (E) 8 3.7 periodic inspection activities carried out at defined intervals, such as examining, measuri
47、ng, testing or gauging the characteristics of a pressure vessel and comparing these with specified requirements 3.8 protective casing layer of protective material which gives mechanical protection which, either cannot be removed without destroying it or is only removable with special tools or is bon
48、ded to the cylinder wall Note 1 to entry: This definition can be applied to cylinders with over-moulded layers or with separate casings. 3.9 tare mass sum of the mass of the empty cylinder, the mass of the valve including a dip tube where fitted, and the mass of all other parts that are permanently
49、attached to the cylinder when it is being filled, e.g. fixed valve guard 4 Requirements for periodic inspection 4.1 General The interval between periodic inspections shall be dependent on the content of a written scheme. Periodic inspections/tests shall be carried out by a competent person under the control of an inspection body based on a written scheme and in accordance with the procedures specified in Table 1. NOTE 1 A written scheme describes work procedures, criteria, responsibilities and other mi
