EN 1968:2002
(Main)Transportable gas cylinders - Periodic inspection and testing of seamless steel gas cylinders
Transportable gas cylinders - Periodic inspection and testing of seamless steel gas cylinders
This European Standard specifies 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 standard may also be applied to cylinders of less than 0,5 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 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.
Ortsbewegliche Gasflaschen - Wiederkehrende Prüfung von nahtlosen Gasflaschen aus Stahl
Diese Europäische Norm legt Anforderungen an die wiederkehrende Prüfung für nahtlose ortsbewegliche Gasflaschen aus Stahl (Einzelflaschen oder Flaschen von Bündeln) für verdichtete und verflüssigte Gase mit einem Fassungsraum von 0,5 l bis zu 150 l fest.
ANMERKUNG Soweit möglich, kann diese Norm auch auf Flaschen mit einem Fassungsraum von weniger als 0,5 l angewendet werden.
Diese Norm legt Anforderungen an die wiederkehrende Prüfung fest, um die Eignung der Gasflaschen für die weitere Nutzung zu bestätigen. Sie legt auch ein Verfahren zum freien Warenverkehr von bestehenden Gasflaschen zwischen den EU-Mitgliedsländern fest (siehe Anhang A).
Diese Norm ist nicht anzuwenden für wiederkehrende Prüfungen von Acetylen-Flaschen oder Verbund-Flaschen aus Stahl.
Bouteilles à gaz transportables - Contrôles et essais périodiques des bouteilles à gaz sans soudure en acier
La présente norme européenne traite des bouteilles à gaz transportables en acier sans soudure (bouteilles individuelles ou en cadres) destinées à des gaz comprimés et liquéfiés sous pression, d'une capacité en eau de 0,5 litre jusqu'à et y compris 150 litres.
NOTE La présente norme peut également s'appliquer, dans la mesure où la pratique le permet, aux bouteilles de contenance inférieure à 0,5 litre.
La présente norme fixe les exigences des contrôles et essais périodiques destinés à vérifier le bon état des bouteilles à gaz en vue de leur remise en service pour une période supplémentaire. Elle définit également une procédure de qualification des bouteilles à gaz existantes pour leur libre circulation entre les états membres de l'Union Européenne (voir annexe A).
Cette norme ne s'applique pas aux contrôles et essais périodiques des bouteilles d'acétylène ou des bouteilles en acier composites (entièrement bobinées ou frettées).
Premične plinske jeklenke - Periodični nadzor in preskus jeklenih jeklenk iz celega
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2002
3UHPLþQHSOLQVNHMHNOHQNH3HULRGLþQLQDG]RULQSUHVNXVMHNOHQLKMHNOHQNL]FHOHJD
Transportable gas cylinders - Periodic inspection and testing of seamless steel gas
cylinders
Ortsbewegliche Gasflaschen - Wiederkehrende Prüfung von nahtlosen Gasflaschen aus
Stahl
Bouteilles a gaz transportables - Contrôles et essais périodiques des bouteilles a gaz
sans soudure en acier
Ta slovenski standard je istoveten z: EN 1968:2002
ICS:
23.020.30 7ODþQHSRVRGHSOLQVNH Pressure vessels, gas
MHNOHQNH cylinders
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 1968
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2002
ICS 23.020.30
English version
Transportable gas cylinders - Periodic inspection and testing of
seamless steel gas cylinders
Bouteilles à gaz transportables - Contrôles et essais Ortsbewegliche Gasflaschen - Wiederkehrende Prüfung
périodiques des bouteilles à gaz sans soudure en acier von nahtlosen Gasflaschen aus Stahl
This European Standard was approved by CEN on 9 November 2001.
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 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 translation
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, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1968:2002 E
worldwide for CEN national Members.
Contents
page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Intervals between periodic inspection and test.6
4 List of procedures for periodic inspection and test.6
5 Identification of cylinder and preparation for inspection and test .7
6 External visual inspection.7
7 Internal visual inspection.8
8 Supplementary tests.8
9 Inspection of cylinder neck.8
10 Pressure test or ultrasonic test.9
11 Inspection of valve.10
12 Final operations .10
13 Rejection and rendering cylinder unserviceable.12
Annex A (informative) Gas cylinders manufactured according to National Regulations.13
Annex B (normative) Inspection periods .15
Annex C (normative) Description, evaluation of defects and conditions for rejection of seamless steel
gas cylinders at time of visual inspection.16
Annex D (normative) Procedure to be adopted when a cylinder valve is suspected to be obstructed .20
Annex E (normative) Proof pressure test of gas cylinders.23
Annex F (normative) Volumetric expansion testing of gas cylinders.24
Annex G (normative) Ultrasonic test.33
Annex H (informative) Inspection and maintenance of valves and their connections: recommended
procedures.45
Annex I (informative) List of commonly used gases corrosive to cylinder material.46
Bibliography .47
Foreword
This document EN 1968:2002 has been prepared by Technical Committee CEN/TC 23 "Transportable gas
cylinders", the secretariat of which 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, 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 European 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 standards 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,
France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,
Sweden, Switzerland and the United Kingdom.
Introduction
The principal aim of a periodic inspection and testing procedure is that at the completion of the test the cylinders
may 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 important
factor when determining whether a cylinder should be returned into service.
1 Scope
This European Standard specifies 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 standard may also be applied to cylinders of less than 0,5 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 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 references
This European 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 publications 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.
EN 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 gauges — 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 water capacities from 0,5 litre up to and including 150 litres — Part 1: Cylinders made
of seamless steel with an R value of less than 1100 MPa.
m
prEN 1964-2, Transportable gas cylinders — Specification for the design and construction of refillable transportable
seamless steel gas cylinders of water capacities from 0,5 litre up to and including 150 litres — Part 2: Cylinders made
of seamless steel with an R value of 1100 MPa and above.
m
EN 1964-3, Transportable gas cylinders — Specification for the design and construction of refillable transportable
seamless steel gas cylinders of water capacities from 0,5 litre up to and including 150 litres — Part 3: Cylinders made
of seamless stainless steel with an R value of less than 1100 MPa.
m
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 materials 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 ISO 13341, Transportable gas cylinders — Fitting of valves to gas cylinders (ISO 13341:1997).
3 Intervals between periodic inspection and test
In order to ensure continued safe operation, cylinders shall be periodically submitted to inspection and test in
accordance with annex B. A cylinder shall fall due for a periodic inspection and test on its first receipt by a filler after
the 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 current
RID/ADR regulations and also gives recommendations which could be subsequently adopted by the RID/ADR regulations.
Provided the cylinder has been subjected to normal conditions of use and has not been subjected to abusive and
abnormal conditions rendering the cylinder unsafe, there is no general requirement for the user to return a gas
cylinder before the contents have been used even though the test interval may have lapsed. However it is
recommended 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 the
responsibility of the person in possession (owner or user) to submit it for a periodic inspection within the interval
specified 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 test
The inspection and test shall be carried out only by competent persons who shall ensure that the cylinders are fit
for continued safe use.
NOTE A competent person is a person who has the necessary technical knowledge, experience and authority to assess
and approve materials for use with gases and to define any special conditions of use that are necessary. Such a person will also
normally be formally qualified in an appropriate technical discipline.
Each cylinder shall be submitted to periodic inspection and test. The following procedures form the requirements
for such inspection and test, and are explained more fully in later clauses:
- identification of cylinder and preparation for inspection 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 and rendering cylinders unserviceable (clause 13).
Where cylinders are manufactured according to National Regulations and are intended to be qualified under the
Transportable Pressure Equipment Directive (TPED) for free movement and use between member states of the
European Union, additional requirements are specified in annex A.
It is recommended that the above listed tests are performed in the suggested sequence. In particular the internal
visual 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 r
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