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SLOVENSKI STANDARD
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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.
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
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 .
...