1、BRITISH STANDARDBS EN 1968:2002Incorporating Amendment No. 1Transportable gas cylinders Periodic inspection and testing of seamless steel gas cylindersThe European Standard EN 1968:2002, with the incorportion of amendment A1:2005, has the status of a British StandardICS 23.020.30g49g50g3g38g50g51g60
2、g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 1968:2002This British Standard was published under the authority of the Standards Policy and Strategy Committee on
3、 25 March 2002 BSI 7 March 2006ISBN 0 580 39413 1National forewordThis British Standard is the official English language version of EN 1968:2002, including amendment A1:2005. It supersedes BS 5430-1:1990 which is withdrawn.The start and infish of text introduced or altered by CEN amendment is indica
4、ted in the text by tags . Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by . The UK participation in its preparation was entrusted by Technical Committee PVE/3, Gas containers, to Subcommittee PVE/3/7, Gas cylind
5、er (receptacle) operations, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in
6、the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible
7、 for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests infor
8、med; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 47 and a back cover.The BSI copyright date displayed in this document indicates when the document was
9、 last issued.Amendments issued since publicationAmd. No. Date Comments16052 March 2006 See national forewordEN 1968 February 2002 +A1 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM October 2005 ICS 23.020.30 English version Transportable gas cylinders - Periodic inspection and testing of seamless
10、 steel gas cylinders (includes amendment A1:2005) Bouteilles gaz transportables - Contrles et essais priodiques des bouteilles gaz sans soudure en acier(inclut lamendement A1:2005) Ortsbewegliche Gasflaschen - Wiederkehrende Prfung von nahtlosen Gasflaschen aus Stahl (enthlt nderung A1:2005) This Eu
11、ropean Standard was approved by CEN on 9 November 2001. Amendment A1 was approved by CEN on 26 August 2005. 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 alterat
12、ion. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the 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 translatio
13、n under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
14、Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2002 CEN All rights of exploitation in any form
15、 and by any means reserved worldwide for CEN national Members. Ref. No. EN 1968:2002 + A1:2005 EEN 1968:2002 (E)2ContentspageForeword3Introduction .41 Scope 52 Normative references 53 Intervals between periodic inspection and test64 List of procedures for periodic inspection and test.65 Identificati
16、on of cylinder and preparation for inspection and test .76 External visual inspection.77 Internal visual inspection88 Supplementary tests89 Inspection of cylinder neck.810 Pressure test or ultrasonic test911 Inspection of valve.1012 Final operations .1013 Rejection and rendering cylinder unserviceab
17、le12Annex A (informative) Gas cylinders manufactured according to National Regulations.13Annex B (normative) Inspection periods .15Annex C (normative) Description, evaluation of defects and conditions for rejection of seamless steelgas cylinders at time of visual inspection.16Annex D (normative) Pro
18、cedure to be adopted when a cylinder valve is suspected to be obstructed.20Annex E (normative) Proof pressure test of gas cylinders23Annex F (normative) Volumetric expansion testing of gas cylinders.24Annex G (normative) Ultrasonic test33Annex H (informative) Inspection and maintenance of valves and
19、 their connections: recommendedprocedures45Annex I (informative) List of commonly used gases corrosive to cylinder material.46Bibliography 47EN 1968:2002 (E) Foreword This document EN 1968:2002 has been prepared by Technical Committee CEN/TC 23 “Transportable gas cylinders“, the secretariat of which
20、 is held by BSI. 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 August 2002, and conflicting national standards shall be withdrawn at the latest by August 2002. In this standard the annexes B, C,
21、 D, E, F and G are normative and the annexes A, H and I are informative. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports the objectives of the framework Directives on Transport of Dangerous Goods. This Euro
22、pean Standard has been submitted for reference into the RID and/or the technical annexes of the ADR. Therefore in this context the standards listed in the normative references and covering basic requirements of the RID/ADR not addressed within the present standard are normative only when the standar
23、ds themselves are referred to in the RID and/or the technical annexes of the ADR. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, Fran
24、ce, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Foreword to amendment A1 This European Standard (EN 1968:2002/A1:2005) has been prepared by Technical Committee CEN/TC 23 “Transportable gas cylinders”,
25、the secretariat of which is held by BSI. This Amendment to the European Standard EN 1968:2002 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2006, and conflicting national satnadrds shall be withdrawn at the late
26、st by April 2006 According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
27、Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. 3EN 1968:2002 (E)4IntroductionThe principal aim of a periodic inspection and testing procedure is that at the completion of the test the cylindersmay
28、 be reintroduced into service for a further period of time.Experience of the inspection and testing of cylinders which is specified in this European Standard is an importantfactor when determining whether a cylinder should be returned into service.EN 1968:2002 (E)51 ScopeThis European Standard speci
29、fies the requirements for periodic inspection and testing of seamless steel transportable gas cylinders (single or those from bundles) intended for compressed and liquefied gases under pressure, of water capacity from 0,5 l up to 150 l. NOTE As far as practicable, this European Standard may also be
30、applied to cylinders of less than 0,5 l water capacity and fortubes up to 3 000 l water capacity. This standard specifies the requirements for periodic inspection and testing to verify the integrity of such gas cylinders to be reintroduced into service for a further period of time. It also defines a
31、 procedure to qualify existing gas cylinders for free movement between member states of the European Union (see annex A). This standard does not apply to periodic inspection and testing of acetylene cylinders or composite (fully wrapped or hoop-wrapped) steel cylinders. 2 Normative referencesThis Eu
32、ropean Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate place in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publicatio
33、ns apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 473, Non destructive testing - Qualification and certification of NDT personnel - General principles.E
34、N 629-2, Transportable gas cylinders 25E taper thread for connection of valves to gas cylinders Part 2: Gauge inspection.EN 837-1, Pressure gauges Part 1: Bourdon tube pressure gauges Dimensions, metrology, requirements and testing.EN 837-3, Pressure gauges Part 3: Diaphragm and capsule pressure gau
35、ges Dimension, metrology, requirements and testing.EN 1089-1, Transportable gas cylinders Gas cylinder identification (excluding LPG) Part 1: Stampmarking.EN 1964-1, Transportable gas cylinders Specification for the design and construction of refillable transportable seamless steel gas cylinders of
36、water capacities from 0,5 litre up to and including 150 litres Part 1: Cylinders made of seamless steel with an Rmvalue of less than 1100 MPa.prEN 1964-2, Transportable gas cylinders Specification for the design and construction of refillable transportable seamless steel gas cylinders of water capac
37、ities from 0,5 litre up to and including 150 litres Part 2: Cylinders made of seamless steel with an Rmvalue of 1100 MPa and above.EN 1964-3, Transportable gas cylinders Specification for the design and construction of refillable transportable seamless steel gas cylinders of water capacities from 0,
38、5 litre up to and including 150 litres Part 3: Cylinders made of seamless stainless steel with an Rmvalue of less than 1100 MPa.EN 1795, Transportable gas cylinders (excluding LPG) Procedures for change of gas service.EN ISO 11114-1, Transportable gas cylinders Compatibility of cylinder and valve ma
39、terials with gas contents Part 1: Metallic materials (ISO 11114-1:1997). EN ISO 11114-2, Transportable gas cylinders Compatibility of cylinder and valve materials with gas contents Part 2: Non-metallic materials (ISO 11114-2:2000).EN 1968:2002 (E)6EN ISO 13341, Transportable gas cylinders Fitting of
40、 valves to gas cylinders (ISO 13341:1997).3 Intervals between periodic inspection and testIn order to ensure continued safe operation, cylinders shall be periodically submitted to inspection and test inaccordance with annex B. A cylinder shall fall due for a periodic inspection and test on its first
41、 receipt by a filler afterthe expiry of the interval in annex B.NOTE Table B.1 gives a list of the intervals between periodic inspections for some gases which complies with the currentRID/ADR regulations and also gives recommendations which could be subsequently adopted by the RID/ADR regulations.Pr
42、ovided the cylinder has been subjected to normal conditions of use and has not been subjected to abusive andabnormal conditions rendering the cylinder unsafe, there is no general requirement for the user to return a gascylinder before the contents have been used even though the test interval may hav
43、e lapsed. However it isrecommended that cylinders are retested within a period not exceeding twice the time interval.In the case of cylinders used for emergency purposes (e.g. fire extinguishers, breathing apparatus), it is theresponsibility of the person in possession (owner or user) to submit it f
44、or a periodic inspection within the intervalspecified in annex B or as specified in the relevant cylinder design standard/regulation, if this is shorter.4 List of procedures for periodic inspection and testThe inspection and test shall be carried out only by competent persons who shall ensure that t
45、he cylinders are fitfor continued safe use.NOTE A competent person is a person who has the necessary technical knowledge, experience and authority to assessand approve materials for use with gases and to define any special conditions of use that are necessary. Such a person will alsonormally be form
46、ally qualified in an appropriate technical discipline.Each cylinder shall be submitted to periodic inspection and test. The following procedures form the requirementsfor such inspection and test, and are explained more fully in later clauses:- identification of cylinder and preparation for inspectio
47、n and test (clause 5);- external visual inspection (clause 6);- internal visual inspection (clause 7);- supplementary tests (clause 8);- inspection of cylinder neck (clause 9);- pressure test or ultrasonic test (clause 10);- inspection of valve (clause 11);- final operations (clause 12);- rejection
48、and rendering cylinders unserviceable (clause 13).Where cylinders are manufactured according to National Regulations and are intended to be qualified under theTransportable Pressure Equipment Directive (TPED) for free movement and use between member states of theEuropean Union, additional requiremen
49、ts are specified in annex A.It is recommended that the above listed tests are performed in the suggested sequence. In particular the internalvisual examination (clause 7) should be carried out before the pressure test or ultrasonic test (clause 10).Cylinders which fail the inspection or tests shall be rejected (see clause 13). When, after the above tests, doubtsstill exist as to the extent of a defect or the condition of a cylinder, then additional tests may be performed inaccordance with clause 8, until such
