SIST EN 12245:2022

Transportable gas cylinders - Fully wrapped composite cylinders

This document specifies minimum requirements for the materials, design, construction, prototype testing and routine manufacturing inspections of fully wrapped composite gas cylinders for compressed, liquefied and dissolved gases.
NOTE 1   For the purposes of this document, the word "cylinder" includes tubes (seamless transportable pressure receptacles of a water capacity exceeding 150 litres and of not more than 3 000 litres).
This document is applicable to cylinders that comprise a liner of metallic material (welded or seamless) or non-metallic material (or a mixture thereof), reinforced by a wound composite consisting of fibres of glass, carbon or aramid (or a mixture thereof) embedded in a matrix.
This document is also applicable to composite cylinders without liners.
This document is not applicable to gas cylinders which are partially covered with fibres and commonly called "hoop wrapped" cylinders. For hoop wrapped composite cylinders, see EN 12257.
NOTE 2   This document does not address the design, fitting and performance of removable protective sleeves. Where these are fitted, they are considered separately.
This document is primarily for compressed, liquefied and dissolved gases other than LPG.
NOTE 3   For dedicated LPG cylinders, see EN 14427.

Ortsbewegliche Gasflaschen - Vollumwickelte Flaschen aus Verbundwerkstoffen

Dieses Dokument legt Mindestanforderungen an die Werkstoffe, Gestaltung, Konstruktion, Prototyp-prüfungen und routinemäßigen Inspektionen während der Herstellung von vollumwickelten Gasflaschen aus Verbundwerkstoffen für verdichtete, verflüssigte und gelöste Gase fest.
ANMERKUNG 1   Für die Anwendung dieses Dokuments umfasst das Wort „Flasche“ Großflaschen (nahtlose, ortsbewegliche Druckbehälter mit einem Fassungsraum von mehr als 150 l und nicht mehr als 3 000 l).
Dieses Dokument gilt für Flaschen, die einen Liner aus metallischem Werkstoff (geschweißt oder nahtlos) oder nichtmetallischem Werkstoff (oder einer Kombination daraus) umfassen, der mit einem in einer Matrix eingebetteten Wickelverbund aus Glas-, Kohlenstoff- oder Aramidfasern (oder einer Kombination daraus) verstärkt ist.
Dieses Dokument gilt auch für Flaschen aus Verbundwerkstoffen ohne Liner.
Dieses Dokument gilt nicht für Gasflaschen, die teilweise mit Fasern eingehüllt sind und allgemein als „umfangsgewickelte“ Flaschen bezeichnet werden. Zu umfangsgewickelten Flaschen aus Verbundwerkstoffen siehe EN 12257.
ANMERKUNG 2   Dieses Dokument behandelt nicht die Konstruktion, Anbringung und Leistung von abnehmbaren Schutzhülsen. Sind derartige Schutzhüllen angebracht, werden sie separat betrachtet.
Dieses Dokument gilt hauptsächlich für verdichtete, verflüssigte und gelöste Gase, die kein Flüssiggas sind.
ANMERKUNG 3   Zu Flaschen speziell für Flüssiggas siehe EN 14427.

Bouteilles à gaz transportables - Bouteilles entièrement bobinées en matériaux composites

Le présent document spécifie les exigences minimales relatives aux matériaux, à la conception, à la construction, aux essais de prototype et aux contrôles courants de production, des bouteilles à gaz entièrement bobinées en matériaux composites pour gaz comprimés, liquéfiés et dissous.
NOTE 1   Pour les besoins du présent document, le mot « bouteille » englobe les tubes (conteneurs sous pression transportables d’une capacité en eau supérieure à 150 l, mais non supérieure à 3 000 l).
Le présent document s’applique aux bouteilles constituées d’un liner métallique (avec ou sans soudure), ou non métallique (ou constitué d’un mélange de ces matériaux), renforcé par un enroulement composite en fibres de verre, de carbone ou d’aramide (ou un mélange de ces matériaux) noyées dans une matrice.
Le présent document s’applique également aux bouteilles à gaz en composite sans liner.
Le présent document ne s’applique pas aux bouteilles à gaz partiellement recouvertes de fibres et couramment appelées « bouteilles frettées ». Pour les bouteilles frettées en matériaux composites, voir l’EN 12257.
NOTE 2   Le présent document ne traite pas de la conception, du montage et des performances des gaines de protection amovibles. Lorsque celles ci sont montées, elles sont considérées séparément.
Le présent document concerne principalement les gaz comprimés, liquéfiés et dissous autres que le GPL.
NOTE 3   Pour les bouteilles à GPL, voir l’EN 14427.

Premične plinske jeklenke - Popolnoma obvite jeklenke iz kompozitnih materialov

Ta dokument določa minimalne zahteve za materiale, projektiranje, konstrukcijo, preskušanje prototipov in redne proizvodne preglede popolnoma obvitih plinskih jeklenk iz kompozitnih materialov za stisnjene, utekočinjene in raztopljene pline.
OPOMBA 1:   Za namene tega dokumenta izraz »jeklenka« vključuje cevi (nevarjene premične tlačne posode s prostornino vode več kot 150 litrov in največ 3000 litrov).
Ta dokument se uporablja za jeklenke, ki imajo oblogo iz kovinskega materiala (varjenega ali nevarjenega) ali nekovinskega materiala (ali njegove mešanice) in so ojačane s kompoziti, ki vsebujejo steklena, ogljikova ali aramidna vlakna (ali njihovo mešanico), vdelanimi v matrico.
Dokument se uporablja tudi za jeklenke iz kompozitnih materialov brez oblog.
Ta dokument se ne uporablja za plinske jeklenke, ki so delno prekrite z vlakni in običajno imenovane »obročasto obvite« jeklenke. Za jeklenke, obročasto obvite s kompozitno maso, glej standard EN 12257.
OPOMBA 2:   Ta dokument ne obravnava zasnove, nameščanja in lastnosti odstranljivih zaščitnih ovitkov. Če so ti nameščeni, se obravnavajo ločeno.
Ta dokument obravnava predvsem stisnjene, utekočinjene in raztopljene pline, razen utekočinjenega naftnega plina (UNP).
OPOMBA 3:   Za jeklenke, namenjene za utekočinjeni naftni plin, glej standard EN 14427.

General Information

• Status: Published
• Public Enquiry End Date: 01-Oct-2020
• Publication Date: 18-Aug-2022
• ICS: 23.020.35 - Gas cylinders
• Technical Committee: TLP - Pressure vessels
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 03-Aug-2022
• Due Date: 08-Oct-2022
• Completion Date: 19-Aug-2022
• Directive: 2008/68/EC - Directve 2008/68/EC of the European Parliament and of the council of 24 September 2008 on the inland transport of the dangerous goods
• Mandate: M/086 - Mandate to CEN for standardization in the field of transport of dangerous goods
• Ref Project: EN 12245:2022 - Transportable gas cylinders - Fully wrapped composite cylinders

Relations

• Replaces: SIST EN 12245:2009+A1:2012 - Transportable gas cylinders - Fully wrapped composite cylinders
• Effective Date: 01-Sep-2020

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 12245:2022
01-september-2022
Nadomešča:
SIST EN 12245:2009+A1:2012
Premične plinske jeklenke - Popolnoma obvite jeklenke iz kompozitnih materialov
Transportable gas cylinders - Fully wrapped composite cylinders
Ortsbewegliche Gasflaschen - Vollumwickelte Flaschen aus Verbundwerkstoffen
Bouteilles à gaz transportables - Bouteilles entièrement bobinées en matériaux
composites
Ta slovenski standard je istoveten z: EN 12245:2022
ICS:
23.020.35 Plinske jeklenke Gas cylinders
SIST EN 12245:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 12245:2022

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SIST EN 12245:2022


EN 12245
EUROPEAN STANDARD

NORME EUROPÉENNE

May 2022
EUROPÄISCHE NORM
ICS 23.020.35 Supersedes EN 12245:2009+A1:2011
English Version

Transportable gas cylinders - Fully wrapped composite
cylinders
Bouteilles à gaz transportables - Bouteilles Ortsbewegliche Gasflaschen - Vollumwickelte Flaschen
entièrement bobinées en matériaux composites aus Verbundwerkstoffen
This European Standard was approved by CEN on 17 January 2022.

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 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 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, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12245:2022 E
worldwide for CEN national Members.

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SIST EN 12245:2022
EN 12245:2022 (E)
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and symbols . 9
3.1 Terms and definitions . 9
3.2 Symbols . 11
4 Design and manufacture . 12
4.1 General. 12
4.2 Liner . 12
4.2.1 Metallic liners . 12
4.2.2 Non-metallic liners . 12
4.2.3 Design drawing . 13
4.2.4 Design of ends . 14
4.2.5 Neck ring . 14
4.3 Composite overwrap. 14
4.3.1 Materials . 14
4.3.2 Winding . 14
4.4 Finished cylinder . 15
4.4.1 Design drawings . 15
4.4.2 Cylinders without liner . 15
4.4.3 Autofrettage . 15
4.4.4 Manufacturing requirements for the finished cylinder . 16
5 Cylinder and material tests . 16
5.1 General. 16
5.2 Requirements and test methods . 16
5.2.1 Test 1 – Composite material tests, including adhesives (where applicable) . 16
5.2.2 Test 2 – Liner material tests . 17
5.2.3 Test 3 – Liner test (for metallic liners only) . 18
5.2.4 Test 4 – Pressure test of finished cylinders at ambient temperature . 20
5.2.5 Test 5 – Cylinder burst test . 20
5.2.6 Test 6 – Resistance to pressure cycles at test pressure (p ) and ambient temperature
h
. 21
5.2.7 Test 7 – Immersion in salt water . 23
5.2.8 Test 8 - Exposure to elevated temperature at test pressure . 24
5.2.9 Test 9 – Drop/Impact test . 24
5.2.10 Test 10 – Flawed cylinder test . 27
5.2.11 Test 11 – Extreme temperature cycle test . 29
5.2.12 Test 12 – Fire resistance test . 30
5.2.13 Test 13 – Permeability test of cylinders with non-metallic or without liners . 32
5.2.14 Test 14 – Liner collapse and blistering test (only for cylinders with non-metallic liners
for compressed gases) . 33
5.2.15 Test 15 – Test of compatibility of thermoplastic liners and matrix for type 5 cylinders
with air or oxidising gases . 33
5.2.16 Test 16 - Torque test (for taper threads only) . 34
5.2.17 Test 17 – Neck strength . 34
5.2.18 Test 18 – Cylinder stability . 35
5.2.19 Test 19 – Neck ring . 35
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SIST EN 12245:2022
EN 12245:2022 (E)
5.2.20 Test 20 – Shear stress calculation for parallel threads for steel liners and steel bosses
. 35
5.3 Failure to meet test requirements . 35
5.3.1 Metallic liners . 35
5.3.2 Finished cylinder . 35
6 Conformity evaluation . 36
7 Marking . 36
8 Operating instructions for cylinders with non-metallic liners . 37
Annex A (normative) Prototype, design variant and production testing . 38
A.1 General . 38
A.2 Prototype testing . 38
A.2.1 General . 38
A.2.2 Definition of new design . 38
A.2.3 Prototype testing requirements . 39
A.2.4 Prototype testing certificate . 39
A.3 Design variant testing . 43
A.3.1 General . 43
A.3.2 Definition of a design variant . 43
A.3.2.1 Conditions to be satisfied . 43
A.3.2.2 Equivalent fibre . 44
A.3.2.3 Equivalent matrix . 44
A.3.2.4 Equivalent liner . 44
A.3.2.5 Cylinder variant . 45
A.3.3 Design variant test requirements . 46
A.3.4 Design variant testing certificate . 46
A.4 Production testing . 49
A.4.1 General . 49
A.4.2 Production test requirements . 49
A.4.3 Liner batch tests and inspections . 49
A.4.3.1 Metallic liner . 49
A.4.3.2 Non-metallic liner . 50
A.4.4 Composite materials batch tests and inspections. 50
A.4.5 Tests and inspections of the finished cylinder . 50
A.4.5.1 Tests . 50
A.4.5.2 Inspections . 51
A.4.6 Batch acceptance certificate . 51
Annex B (informative) Examples of prototype approval and production testing certificates
. 52
B.1 Type approval certificate – composite cylinders with metallic liners . 52
B.2 Type approval certificate – composite cylinders with non-metallic liners . 53
3

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SIST EN 12245:2022
EN 12245:2022 (E)
B.3 Type approval certificate – composite cylinders without liners . 54
B.4 Design variant approval certificate – composite cylinders with metallic liners . 55
B.5 Production test certificate . 56
Annex C (informative) Example of high velocity impact (bullet) test . 58
C.1 Procedure . 58
C.2 Criteria . 58
C.3 Parameters to monitor and record . 58
Annex D (informative) Standardized test requirements for thermally activated pressure
relief devices . 59
D.1 General. 59
D.2 Cylinder test . 59
D.2.1 Cylinder set up . 59
D.2.2 Fire source . 59
D.2.3 Temperature and pressure measurements . 59
D.2.4 General test requirements . 60
D.2.5 Tests options . 60
D.2.5.1 Option A – Controlled release of pressure . 60
D.2.5.2 Option B – Fire until rupture . 60
D.3 PRD test . 60
D.4 Vent test . 60
D.5 System assessment . 61
D.5.1 Qualification limit envelope. 61
D.5.2 Service limit envelope . 61
D.5.3 Acceptable results . 61
Bibliography . 64

4

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SIST EN 12245:2022
EN 12245:2022 (E)
European foreword
This document (EN 12245:2022) 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 November 2022, and conflicting national standards shall
be withdrawn at the latest by November 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12245:2009+A1:2011.
This document has been submitted for reference in:
— the RID; and
— the technical annexes of the ADR.
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 of
this standard.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
5

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SIST EN 12245:2022
EN 12245:2022 (E)
Introduction
The purpose of this document is to provide a specification for the design, manufacture, inspection and
testing of refillable, transportable fully wrapped composite cylinders and tubes.
The specifications given are based on knowledge of, and experience with, materials, design requirements,
manufacturing processes and control during manufacture of cylinders and tubes in common use in the
countries of the CEN members.
6

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SIST EN 12245:2022
EN 12245:2022 (E)
1 Scope
This document specifies minimum requirements for the materials, design, construction, prototype testing
and routine manufacturing inspections of fully wrapped composite gas cylinders for compressed,
liquefied and dissolved gases.
NOTE 1 For the purposes of this document, the word “cylinder” includes tubes (seamless transportable pressure
receptacles of a water capacity exceeding 150 l and of not more than 3 000 l).
This document is applicable to cylinders that comprise a liner of metallic material (welded or seamless)
or non-metallic material (or a mixture thereof), reinforced by a wound composite consisting of fibres of
glass, carbon or aramid (or a mixture thereof) embedded in a matrix.
This document is also applicable to composite cylinders without liners.
This document is not applicable to gas cylinders which are partially covered with fibres and commonly
called “hoop wrapped” cylinders. For hoop wrapped composite cylinders, see EN 12257.
NOTE 2 This document does not address the design, fitting and performance of removable protective sleeves.
Where these are fitted, they are considered separately.
This document is primarily for compressed, liquefied and dissolved gases other than LPG.
NOTE 3 For dedicated LPG cylinders, see EN 14427.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 12862, Transportable gas cylinders - Specification for the design and construction of refillable
transportable welded aluminium alloy gas cylinders
EN 13322-1, Transportable gas cylinders - Refillable welded steel gas cylinders - Design and construction -
Part 1: Carbon steel
EN 13322-2, Transportable gas cylinders - Reffilable welded steel gas cylinders - Design and construction -
Part 2: Stainless steel
EN 14638-1, Transportable gas cylinders - Refillable welded receptacles of a capacity not exceeding 150
litres - Part 1: Welded austenitic stainless steel cylinders made to a design justified by experimental methods
EN 14638-3, Transportable gas cylinders - Refillable welded receptacles of a capacity not exceeding 150
litres - Part 3: Welded carbon steel cylinders made to a design justified by experimental methods
EN ISO 75-1, Plastics - Determination of temperature of deflection under load - Part 1: General test method
(ISO 75-1)
EN ISO 75-3, Plastics - Determination of temperature of deflection under load - Part 3: High-strength
thermosetting laminates (ISO 75-3)
EN ISO 527-1, Plastics - Determination of tensile properties - Part 1: General principles (ISO 527-1)
EN ISO 527-2, Plastics - Determination of tensile properties - Part 2: Test conditions for moulding and
extrusion plastics (ISO 527-2)
EN ISO 1183 (all parts), Plastics — Methods of determining the density and relative density of non-cellular
plastics (ISO 1183)
7

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SIST EN 12245:2022
EN 12245:2022 (E)
EN ISO 1628-3, Plastics - Determination of the viscosity of polymers in dilute solution using capillary
viscometers - Part 3: Polyethylenes and polypropylenes (ISO 1628-3)
EN ISO 2884-1, Paints and varnishes - Determination of viscosity using rotary viscometers - Part 1: Cone-
and-plate viscometer operated at a high rate of shear (ISO 2884-1)
EN ISO 3146, Plastics - Determination of melting behaviour (melting temperature or melting range) of semi-
crystalline polymers by capillary tube and polarizing-microscope methods (ISO 3146)
EN ISO 7866, Gas cylinders - Refillable seamless aluminium alloy gas cylinders - Design, construction and
testing (ISO 7866)
EN ISO 9809-1, Gas cylinders - Design, construction and testing of refillable seamless steel gas cylinders and
tubes - Part 1: Quenched and tempered steel cylinders and tubes with tensile strength less than 1 100 MPa
(ISO 9809-1)
EN ISO 9809-2, Gas cylinders - Design, construction and testing of refillable seamless steel gas cylinders and
tubes - Part 2: Quenched and tempered steel cylinders and tubes with tensile strength greater than or equal
to 1 100 MPa (ISO 9809-2)
EN ISO 10156, Gas cylinders - Gases and gas mixtures - Determination of fire potential and oxidizing ability
for the selection of cylinder valve outlets (ISO 10156)
EN ISO 10618, Carbon fibre - Determination of tensile properties of resin-impregnated yarn (ISO 10618)
EN ISO 11114-1, Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 1:
Metallic materials (ISO 11114-1)
EN ISO 11114-2, Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 2:
Non-metallic materials (ISO 11114-2)
EN ISO 11114-3, Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 3:
Autogenous ignition test for non-metallic materials in oxygen atmosphere (ISO 11114-3)
EN ISO 11114-4, Transportable gas cylinders - Compatibility of cylinder and valve materials with gas
contents - Part 4: Test methods for selecting steels resistant to hydrogen embrittlement (ISO 11114-4)
EN ISO 11114-5:2022, Gas cylinders — Compatibility of cylinder and valve materials with gas contents —
Part 5: Test methods for evaluating plastic liners (ISO 11114-5:2022)
EN ISO 11120, Gas cylinders - Refillable seamless steel tubes of water capacity between 150 l and 3000 l -
Design, construction and testing (ISO 11120)
EN ISO 11357-2, Plastics - Differential scanning calorimetry (DSC) - Part 2: Determination of glass
transition temperature and step height (ISO 11357-2)
EN ISO 13341, Gas cylinders - Fitting of valves to gas cylinders (ISO 13341)
EN ISO 14130, Fibre-reinforced plastic composites - Determination of apparent interlaminar shear strength
by short-beam method (ISO 14130)
ISO 3341, Textile glass — Yarns — Determination of breaking force and breaking elongation
ISO 6721-11, Plastics — Determination of dynamic mechanical properties — Part 11: Glass transition
temperature
ISO 9809-4, Gas cylinders — Design, construction and testing of refillable seamless steel gas cylinders and
tubes — Part 4: Stainless steel cylinders with an Rm value of less than 1 100 MPa
8

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SIST EN 12245:2022
EN 12245:2022 (E)
ASTM D 2196-18e1, Standard test method for rheological properties of non-Newtonian materials by
rotational (Brookfield) viscosimeter
ASTM D 2290-19a, Standard test method for apparent hoop tensile strength of plastic or reinforced plastic
pipe
ASTM D 2291/D 2291M-16, Standard practice for fabrication of ring test specimens for glass-resin
composites
ASTM D 2344/D 2344M-16, Standard test method for short-beam strength of polymer matrix composite
materials and their laminates
ASTM D 4018-17, Standard test methods for properties of continuous filament carbon and graphite fiber
tows
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the following terms, definitions and symbols apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1.1
ambient temperature
temperature of surroundings varying between 10 °C and 35 °C (for test purposes only)
3.1.2
autofrettage
pressure application procedure which strains the metal liner past its yield point sufficiently to cause
permanent plastic deformation, and results in the liner having compressive stresses and the fibres having
tensile stresses when at zero internal gauge pressure
[SOURCE: EN ISO 10286:2021, 3.3.4 – “yield strength” has been replaced with “yield point”]
3.1.3
batch
homogeneous quantity of material,
identified and certified a
...

SLOVENSKI STANDARD
oSIST prEN 12245:2020
01-september-2020
Premične plinske jeklenke - Popolnoma obvite jeklenke iz kompozitnih materialov
Transportable gas cylinders - Fully wrapped composite cylinders
Ortsbewegliche Gasflaschen - Vollumwickelte Flaschen aus Verbundwerkstoffen
Bouteilles à gaz transportables - Bouteilles entièrement bobinées en matériaux
composites
Ta slovenski standard je istoveten z: prEN 12245
ICS:
23.020.35 Plinske jeklenke Gas cylinders
oSIST prEN 12245:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 12245:2020

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oSIST prEN 12245:2020


DRAFT
EUROPEAN STANDARD
prEN 12245
NORME EUROPÉENNE

EUROPÄISCHE NORM

September 2020
ICS 23.020.35 Will supersede EN 12245:2009+A1:2011
English Version

Transportable gas cylinders - Fully wrapped composite
cylinders
Bouteilles à gaz transportables - Bouteilles Ortsbewegliche Gasflaschen - Vollumwickelte Flaschen
entièrement bobinées en matériaux composites aus Verbundwerkstoffen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 23.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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 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, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12245:2020 E
worldwide for CEN national Members.

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oSIST prEN 12245:2020
prEN 12245:2020 (E)
Contents Page
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and symbols . 9
3.1 Terms and definitions . 9
3.2 Symbols . 11
4 Design and manufacture . 11
4.1 General. 11
4.2 Liner . 12
4.2.1 Metallic liners . 12
4.2.2 Non-metallic liners . 12
4.2.3 Design drawing . 12
4.2.4 Design of ends . 13
4.2.5 Neck ring . 13
4.3 Composite overwrap. 13
4.3.1 Materials . 13
4.3.2 Winding . 14
4.4 Finished cylinder . 14
4.4.1 Design drawings . 14
4.4.2 Cylinders without liner . 14
4.4.3 Autofrettage . 15
4.4.4 Manufacturing requirements for the finished cylinder . 15
5 Cylinder and material tests . 15
5.1 General. 15
5.2 Requirements and test methods . 16
5.2.1 Test 1 – Composite material tests, including adhesives (where applicable) . 16
5.2.2 Test 2 – Liner material tests . 17
5.2.3 Test 3 – Liner burst test at ambient temperature (for metallic liners only) . 18
5.2.4 Test 4 – Pressure test of finished cylinders at ambient temperature . 18
5.2.5 Test 5 – Cylinder burst test . 19
5.2.6 Test 6 – Resistance to pressure cycles at test pressure (p ) and ambient
h
temperature . 19
5.2.7 Test 7 – Immersion in salt water . 21
5.2.8 Test 8 - Exposure to elevated temperature at test pressure . 22
5.2.9 Test 9 - Drop test . 22
5.2.10 Test 10 – Flawed cylinder test . 25
Figure 4 — Flaw detail . 25
5.2.11 Test 11 – Extreme temperature cycle test . 26
5.2.12 Test 12 – Fire resistance test . 28
5.2.13 Test 13 – Pneumatic cycle test (only for cylinders with non-metallic liners) . 29
5.2.14 Test 14 – Permeability test of cylinders with non-metallic or without liners . 30
5.2.15 Test 15 – Test of compatibility of thermoplastic liners with air or oxidising gases . 31
5.2.16 Test 16 - Torque test . 31
5.2.17 Test 17 – Neck strength . 32
5.2.18 Test 18 – Cylinder stability . 32
5.2.19 Test 19 – Neck ring . 32
5.3 Failure to meet test requirements . 32
5.3.1 Metallic liners . 32
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5.3.2 Finished cylinder . 32
6 Conformity evaluation . 33
7 Marking . 33
8 Operating instructions . 34
8.1 General . 34
8.2 Cylinders with non-metallic liners . 34
Annex A (normative) Prototype, design variant and production testing . 35
A.1 General . 35
A.2 Prototype testing . 35
A.2.1 General . 35
A.2.2 Definition of new design . 35
A.2.3 Prototype testing requirements . 36
A.2.4 Prototype testing certificate . 37
A.3 Design variant testing . 39
A.3.1 General . 39
A.3.2 Definition of a design variant . 39
A.3.3 Design variant test requirements . 41
A.3.4 Design variant testing certificate . 41
A.4 Production testing . 44
A.4.1 General . 44
A.4.2 Production test requirements . 44
A.4.3 Liner batch tests and inspections . 44
A.4.4 Composite materials batch tests and inspections. 45
A.4.5 Tests and inspections of the finished cylinder . 45
A.4.6 Batch acceptance certificate . 46
Annex B (informative) Examples of prototype approval and production testing
certificates . 47
B.1 Type approval certificate – composite cylinders with metallic liners . 47
B.2 Type approval certificate – composite cylinders with non-metallic liners . 48
B.3 Type approval certificate – composite cylinders without liners . 49
B.4 Design variant approval certificate – composite cylinders with metallic liners . 50
B.5 Production test certificate . 51
Annex C (informative) Example of high velocity impact (bullet) test . 53
C.1 Procedure . 53
C.2 Criteria . 53
C.3 Parameters to monitor and record . 53
Annex D (informative) Standardized test requirements for thermally activated pressure
relief devices . 54
D.1 General . 54
D.2 Cylinder test. 54
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D.2.1 Cylinder set up . 54
D.2.2 Fire source . 54
D.2.3 Temperature and pressure measurements . 54
D.2.4 General test requirements . 55
D.2.5 Tests options . 55
D.3 PRD test . 55
D.4 Vent test . 55
D.5 System assessment . 56
D.5.1 Qualification limit envelope. 56
D.5.2 Service limit envelope . 56
D.5.3 Acceptable results . 56
Annex E (informative) Explanation on the permeability test (Test 14) . 59
Bibliography . 60

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European foreword
This document (prEN 12245:2020) has been prepared by Technical Committee CEN/TC 23
“Transportable gas cylinders”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.


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Introduction
The purpose of this document is to provide a specification for the design, manufacture, inspection and
testing of refillable, transportable fully wrapped composite cylinders.
The specifications given are based on knowledge of, and experience with, materials, design requirements,
manufacturing processes and control during manufacture of cylinders in common use in the countries of
the CEN members.
Regulations require that the maximum service pressure (maximum developed pressure at 65 °C) does
not exceed the test pressure. Consequently the safety factor is applied to the test pressure when the
cylinder is intended for general service.

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1 Scope
This document specifies minimum requirements for the materials, design, construction, prototype testing
and routine manufacturing inspections of fully wrapped composite gas cylinders for compressed,
liquefied and dissolved gases.
NOTE 1 For the purposes of this document, the word “cylinder” includes tubes (seamless transportable pressure
receptacles of a water capacity exceeding 150 l and of not more than 3 000 litres).
This document is applicable to cylinders that comprise a liner of metallic material (welded or seamless)
or non-metallic material (or a mixture thereof), reinforced by a wound composite consisting of fibres of
glass, carbon or aramid (or a mixture thereof) embedded in a matrix.
This document is also applicable to composite cylinders without liners.
This document is not applicable to gas cylinders which are partially covered with fibres and commonly
called “hoop wrapped” cylinders. For hoop wrapped composite cylinders, see EN 12257.
NOTE 2 This document does not address the design, fitting and performance of removable protective sleeves.
Where these are fitted, they are considered separately.
This document is primarily for compressed, liquefied and dissolved gases other than LPG.
NOTE 3 For dedicated LPG cylinders, see EN 14427.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 12862, Transportable gas cylinders — Specification for the design and construction of refillable
transportable welded aluminium alloy gas cylinders
EN 13322-1, Transportable gas cylinders — Refillable welded steel gas cylinders — Design and construction
— Part 1: Carbon steel
EN 13322-2, Transportable gas cylinders — Refillable welded steel gas cylinders — Design and construction
— Part 2: Stainless steel
EN 14638-1, Transportable gas cylinders — Refillable welded receptacles of a capacity not exceeding
150 litres — Part 1: Welded austenitic stainless steel cylinders made to a design justified by experimental
methods
EN 14638-3, Transportable gas cylinders — Refillable welded receptacles of a capacity not exceeding
150 litres — Part 3: Welded carbon steel cylinders made to a design justified by experimental methods
EN ISO 75-1, Plastics — Determination of temperature of deflection under load — Part 1: General test
method (ISO 75-1)
EN ISO 75-3, Plastics — Determination of temperature of deflection under load — Part 3: High-strength
thermosetting laminates (ISO 75-3)
EN ISO 527-1, Plastics — Determination of tensile properties — Part 1: General principles (ISO 527-1)
EN ISO 527-2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and
extrusion plastics (ISO 527-2)
EN ISO 1183 (all parts), Plastics — Methods of determining the density and relative density of non-cellular
plastics
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EN ISO 1628-3, Plastics — Determination of the viscosity of polymers in dilute solution using capillary
viscometers — Part 3: Polyethylenes and polypropylenes (ISO 1628-3)
EN ISO 2884-1, Paints and varnishes — Determination of viscosity using rotary viscometers — Part 1: Cone-
and-plate viscometer operated at a high rate of shear (ISO 2884-1)
EN ISO 3146, Plastics — Determination of melting behaviour (melting temperature or melting range) of
semi-crystalline polymers by capillary tube and polarizing-microscope methods (ISO 3146)
EN ISO 3341, Textile glass — Yarns — Determination of breaking force and breaking elongation
EN ISO 7866, Gas cylinders — Refillable seamless aluminium alloy gas cylinders — Design, construction and
testing (ISO 7866)
EN ISO 9809-1, Gas cylinders — Refillable seamless steel gas cylinders — Design, construction and testing
— Part 1: Quenched and tempered steel cylinders with tensile strength less than 1 100 MPa (ISO 9809-1)
EN ISO 9809-2, Gas cylinders — Refillable seamless steel gas cylinders — Design, construction and testing
— Part 2: Quenched and tempered steel cylinders with tensile strength greater than or equal to 1 100 MPa
(ISO 9809-2)
EN ISO 9809-4, Gas cylinders — Refillable seamless steel gas cylinders — Design, construction and testing
— Part 4: Stainless steel cylinders with an Rm value of less than 1 100 MPa (ISO 9809-3)
EN ISO 10156, Gas cylinders — Gases and gas mixtures — Determination of fire potential and oxidizing
ability for the selection of cylinder valve outlets (ISO 10156)
EN ISO 10618, Carbon fibre — Determination of tensile properties of resin-impregnated yarn (ISO 10618)
EN ISO 11114-1, Gas cylinders — Compatibility of cylinder and valve materials with gas contents —
Part 1: Metallic materials (ISO 11114-1)
EN ISO 11114-2, Gas cylinders — Compatibility of cylinder and valve materials with gas contents —
Part 2: Non-metallic materials (ISO 11114-2)
EN ISO 11114-3, Gas cylinders — Compatibility of cylinder and valve materials with gas contents —
Part 3: Autogenous ignition test in oxygen atmosphere (ISO 11114-3)
EN ISO 11114-4, Transportable gas cylinders — Compatibility of cylinder and valve materials with gas
contents — Part 4: Test methods for selecting metallic materials resistant to hydrogen embrittlement
(ISO 11114-4)
EN ISO 11120, Gas cylinders — Refillable seamless steel tubes of water capacity between 150 l
and 3000 l — Design, construction and testing (ISO 11120)
EN ISO 11357-2, Plastics — Differential scanning calorimetry (DSC) — Part 2: Determination of glass
transition temperature and glass transition step height (ISO 11357-2)
EN ISO 13341, Gas cylinders — Fitting of valves to gas cylinders (ISO 13341)
EN ISO 13769, Gas cylinders — Stamp marking (ISO 13769)
EN ISO 14130, Fibre-reinforced plastic composites — Determination of apparent interlaminar shear
strength by short-beam method (ISO 14130)
ISO 6721-11, Plastics — Determination of dynamical mechanical properties — Part 11: Glass transition
temperature
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ASTM D 2196-18e1, Test methods for rheological properties of non-newtonian materials by rotational
(Brookfield) viscosimeter
ASTM D 2290-19a, Test methods for rheological properties of non-newtonian materials by rotational
(Brookfield) viscosimeter
ASTM D 2291/D 2291M-16, Test methods for rheological properties of non-newtonian materials by
rotational (Brookfield) viscosimeter
ASTM D 2344/D 2344M-16, Standard Test Method for Short-Beam Strength of Polymer Matrix Composite
Materials and Their Laminates
ASTM D 4018-17, Standard Test Methods for Properties of Continuous Filament Carbon and Graphite Fiber
Tows
3 Terms, definitions and symbols
For the purposes of this document, the following terms, definitions and symbols apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Terms and definitions
3.1.1
ambient temperature
temperature of surroundings varying between 10 °C and 35 °C (for test purposes only)
3.1.2
autofrettage
pressure application procedure which strains the metal liner past its yield point sufficiently to cause
permanent plastic deformation, and results in the liner having compressive stresses and the fibres having
tensile stresses when at zero internal gauge pressure
[SOURCE: EN ISO 10286:2015, definition 557]
3.1.3
batch (of fibres, pre-impregnated fibres or components of the matrix system)
homogeneous quantity of material, identified and certified as such by the supplier
3.1.4
batch (of metallic liners)
quantity of liners of the same nominal diameter, thickness, length and design, made successively from the
same material cast and subjected to the same heat treatment for the same length of time
3.1.5
batch (of non-metallic liners)
quantity of liners of the same nominal diameter, thickness, length and design, made successively from the
same batch of materials and subjected to the same manufacturing process
3.1.6
batch (of finished cylinders with liners)
quantity of up to 200 finished cylinders, plus cylinders for destructive testing, of the same nominal
diameter, thickness, length and design which may contain different batches of liners (providing the
batches are nominally the same and have had the same treatments), fibres and matrix materials
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3.1.7
batch (of finished cylinders with no liners)
production quantity of up to 200 finished cylinders, plus cylinders for destructive testing, of the same
nominal diameter, thickness, length and design
3.1.8
burst pressure
highest pressure reached in a cylinder or liner during the relevant burst test
[SOURCE: EN ISO 10286:2015, definition 732, modified — “or liner” has been added.]
3.1.9
composite overwrap
fibres and matrix taken together as a combined unit
3.1.10
cylinder without liner
cylinder having no liner and consisting wholly of the composite winding
3.1.11
elastomer
material which at ambient temperature can be stretched repeatedly to at least twice its original length
and will return with force to approximately its original length immediately upon release of the stress
3.1.12
exterior coating
layer of clear or pigmented material applied to the cylinder as protection or for cosmetic purposes
3.1.13
fibre or strand
load-carrying part of the composite overwrap e.g. glass, aramid or carbon
3.1.14
fully wrapped cylinder
cylinder reinforced by wrapping to take both circumferential and longitudinal stress
3.1.15
liner
metallic or non-metallic vessel that contains the gas but may also contribute to the mechanical behaviour
of the cylinder
[SOURCE: EN ISO 10286:2015, definition 246 modified]
3.1.16
non-load sharing liner
liner that has a burst pressure less than 5 % of the nominal burst pressure of the finished composite
cylinder
3.1.17
non-metallic liner
liner made from thermoplastic, thermosetting or elastomer material
3.1.18
matrix
material that is used to bind and hold the fibres in place
[SOURCE: EN ISO 10286:2015, definition 245]
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3.1.19
permanent protective attachment
integral part of the cylinder design permanently affixed to composite cylinders, covering part of or the
entire surface of the cylinder, providing functions durin
...