SIST EN 14427:2022
(Main)LPG equipment and accessories - Transportable refillable composite cylinders for LPG - Design and construction
LPG equipment and accessories - Transportable refillable composite cylinders for LPG - Design and construction
This European Standard
- specifies minimum requirements for materials, design, construction, prototype testing and routine manufacturing inspections of fully wrapped composite cylinders with a water capacity from 0,5 litre up to and including 150 litres for liquefied petroleum gases (LPG) exposed to ambient temperatures, with a test pressure of at least 30 bar;
- is only applicable to cylinders which are fitted with a pressure relief valve (see 4.1.3);
- is applicable to cylinders with a liner of metallic material (welded or seamless) or non-metallic material (or a mixture thereof), reinforced by fibres of glass, carbon or aramid (or a mixture thereof);
- is also applicable to composite cylinders without liners.
Cylinders manufactured to this European Standard are suitable for temperatures down to −40 °C.
This European Standard does not address the design, fitting and performance of removable protective sleeves. Where these are fitted, the choice of material and sleeve performance should be considered separately.
Flüssiggas-Geräte und Ausrüstungsteile - Ortsbewegliche wiederbefüllbare vollumwickelte Flaschen aus Verbundwerkstoff für Flüssiggas (LPG) - Auslegung und Bau
Dieses Dokument
— legt Mindestanforderungen an Werkstoffe, Auslegung, Bau, Baumusterprüfungen und Prüfungen bei der Herstellung von vollumwickelten Flaschen aus Verbundwerkstoff mit einem Fassungsraum von 0,5 l bis einschließlich 150 l für Flüssiggas (LPG) mit einem Prüfdruck von mindestens 30 bar fest, die Umgebungstemperaturen ausgesetzt sind;
— gilt nur für Flaschen, die mit einem Sicherheitsventil ausgestattet sind (siehe 4.1.3);
— gilt für Flaschen mit einem Liner aus metallischem Werkstoff (geschweißt oder nahtlos) oder aus nichtmetallischem Werkstoff (oder einer Kombination aus beidem), der durch Fasern aus Glas, Kohlenstoff oder Aramid (oder einer Kombination daraus) verstärkt ist;
— gilt auch für Flaschen aus Verbundwerkstoff ohne Liner.
Nach diesem Dokument hergestellte Flaschen sind für Temperaturen von bis zu −40 °C geeignet.
Dieses Dokument behandelt nicht die Auslegung, das Anbringen und die Leistung von abnehmbaren Schutzhüllen. Wenn diese angebracht werden, sind die Werkstoffauswahl und die Leistung der Hülle getrennt zu betrachten.
Équipements pour gaz de pétrole liquéfiés et leurs accessoires - Bouteilles entièrement bobinées en matériau composite, transportables et rechargeables pour gaz de pétrole liquéfié (GPL) - Conception et fabrication
Le présent document :
— spécifie les exigences minimales relatives aux matériaux, à la conception, à la fabrication, aux essais de qualification de modèle et aux contrôles courants de production des bouteilles composites entièrement bobinées pour gaz de pétrole liquéfié (GPL), d'une capacité en eau comprise entre 0,5 l et 150 l inclus, exposées aux températures ambiantes, pour une pression d'essai d'au moins 30 bar ;
— s'applique uniquement aux bouteilles qui sont dotées d'une soupape de sécurité (voir 4.1.3) ;
— s'applique aux bouteilles munies d'un liner métallique (avec ou sans soudure) ou non métallique (ou constitué d'un mélange de ces matériaux), renforcé par des fibres de verre, de carbone ou d'aramide (ou un mélange de ces matériaux) ;
— s'applique également aux bouteilles composites sans liner.
Les bouteilles fabriquées selon le présent document sont adaptées à des températures pouvant descendre jusqu'à –40 °C.
Le présent document ne traite pas de la conception, du montage et des performances des enveloppes de protection amovibles. Lorsque celles-ci sont montées, il est attendu que le choix du matériau et les performances des enveloppes soient considérés séparément.
Oprema in pribor za utekočinjeni naftni plin (UNP) - Premične, ponovno polnljive jeklenke iz kompozitnih materialov za UNP - Konstruiranje in izdelava
Ta evropski standard:
– določa minimalne zahteve za materiale, konstruiranje, izdelavo, preskušanje prototipov in rutinske proizvodne inšpekcijske preglede popolnoma obvitih jeklenk iz kompozitnih materialov s prostornino vode od 0,5 l do vključno 150 l za utekočinjeni naftni plin (UNP), izpostavljene temperaturam okolja, s preskusnim tlakom vsaj 30 barov;
– se uporablja le za jeklenke, ki so opremljene z varnostnim ventilom (glej točko 4.1.3);
– se uporablja za jeklenke z oblogo iz kovinskega materiala (varjenega ali nevarjenega) ali nekovinskega materiala (ali njegove mešanice), okrepljene s steklenimi vlakni, ogljikovimi ali aramidnimi (ali njuno mešanico);
– se uporablja tudi za jeklenke iz kompozitnih materialov brez oblog.
Jeklenke, proizvedene v skladu s tem evropskim standardom, so primerne za temperature do –40 °C.
Ta evropski standard ne obravnava konstruiranja, nameščanja in lastnosti odstranljivih zaščitnih ovitkov. Kadar so zaščitni ovitki nameščeni, naj bi se izbira materiala in lastnosti ovitkov obravnavale ločeno.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 14427:2022
01-september-2022
Nadomešča:
SIST EN 14427:2014
Oprema in pribor za utekočinjeni naftni plin (UNP) - Premične, ponovno polnljive
jeklenke iz kompozitnih materialov za UNP - Konstruiranje in izdelava
LPG equipment and accessories - Transportable refillable composite cylinders for LPG -
Design and construction
Flüssiggas-Geräte und Ausrüstungsteile - Ortsbewegliche wiederbefüllbare
vollumwickelte Flaschen aus Verbundwerkstoff für Flüssiggas (LPG) - Auslegung und
Bau
Équipements pour gaz de pétrole liquéfiés et leurs accessoires - Bouteilles entièrement
bobinées en matériau composite, transportables et rechargeables pour gaz de pétrole
liquéfié (GPL) - Conception et fabrication
Ta slovenski standard je istoveten z: EN 14427:2022
ICS:
23.020.35 Plinske jeklenke Gas cylinders
SIST EN 14427:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 14427:2022
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SIST EN 14427:2022
EN 14427
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2022
EUROPÄISCHE NORM
ICS 23.020.35 Supersedes EN 14427:2014
English Version
LPG equipment and accessories - Transportable refillable
composite cylinders for LPG - Design and construction
Équipements pour gaz de pétrole liquéfiés et leurs Flüssiggas-Geräte und Ausrüstungsteile -
accessoires - Bouteilles entièrement bobinées en Ortsbewegliche wiederbefüllbare vollumwickelte
matériau composite, transportables et rechargeables Flaschen aus Verbundwerkstoff für Flüssiggas (LPG) -
pour gaz de pétrole liquéfié (GPL) - Conception et Auslegung und Bau
fabrication
This European Standard was approved by CEN on 13 March 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 14427:2022 E
worldwide for CEN national Members.
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SIST EN 14427:2022
EN 14427:2022 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
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 .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 Type 5 cylinders .15
4.4.3 Autofrettage .15
4.4.4 Manufacturing requirements for the finished cylinder .16
4.4.5 Neck ring .16
4.4.6 Cylinder stability .16
4.4.7 Establishment of rejection criteria .16
5 Cylinder and material tests .17
5.1 General .17
5.2 Test procedures and test requirements .18
5.2.1 Test No. 1 – Composite material tests .18
5.2.2 Test No. 2 – Liner material tests .19
5.2.3 Test No. 3 – Liner burst test (for metallic liners only) .20
5.2.4 Test No. 4 –Proof pressure test of finished cylinders .21
5.2.5 Test No. 5 – Cylinder burst test .22
5.2.6 Test No. 6 – Pressure cycle test .22
5.2.7 Test No. 7 – Artificial ageing test .23
5.2.8 Test No. 8 – Exposure to elevated temperature at test pressure .25
5.2.9 Test No. 9 – Cylinder body integrity impact tests .26
5.2.10 Test No. 10 – Drop test .30
5.2.11 Test No. 11 – Flawed cylinder test .31
5.2.12 Test No. 12 – Extreme temperature cycle test .31
5.2.13 Test No. 13 – Fire resistance test .33
5.2.14 Test No. 14 – Spike puncture test .34
5.2.15 Permeability test of Type 4 and 5 cylinders .35
5.2.16 Test No. 16 – Torque test .36
5.2.17 Test No. 17 – Neck strength test .36
5.2.18 Test No. 18 – Neck ring test .37
5.3 Failure to meet test requirements .37
5.3.1 Metallic liners .37
5.3.2 Complete cylinder .37
6 Marking .38
2
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SIST EN 14427:2022
EN 14427:2022 (E)
Annex A (normative) Prototype testing, design variant testing and production testing . 39
A.1 General . 39
A.2 Prototype testing . 39
A.2.1 General . 39
A.2.2 Definition of new design . 40
A.2.3 Prototype testing requirements . 41
A.3 Design variant testing . 43
A.3.1 General . 43
A.3.2 Definition of a design variant . 43
A.3.3 Design variant test requirements . 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.4.4 Composite materials batch tests and inspections. 50
A.4.5 Tests and inspections of the finished cylinder . 50
Bibliography . 54
3
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SIST EN 14427:2022
EN 14427:2022 (E)
European foreword
This document (EN 14427:2022) has been prepared by Technical Committee CEN/TC 286 “Liquefied
petroleum gas equipment 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 October 2022, and conflicting national standards shall
be withdrawn at the latest by October 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 14427:2014.
In comparison with the previous edition, the following technical modifications have been made:
— Introduction of cylinder types;
— Addition of criteria for design drawings;
— Establishment of rejection criteria;
— Addition of table – cylinder rejection criteria;
— Further update to 4.3.2.4, 5.2.6, 5.2.7, 5.2.9, 5.2.15, Annex A.
This document has been submitted for reference in:
— the RID [12]; and
— the technical annexes of the ADR [11].
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 can lead to temporary non-compliances with the clauses of
this document.
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.
4
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SIST EN 14427:2022
EN 14427:2022 (E)
Introduction
This document calls for the use of substances and procedures that can be injurious to health if adequate
precautions 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.
It has been assumed in the drafting of this document that the execution of its provisions is entrusted to
appropriately qualified and experienced people.
Protection of the environment is a key political issue in Europe and elsewhere, for CEN/TC 286 this is
covered in CEN/TS 16765 [5] and this Technical Specification should be read in conjunction with this
document. This Technical Specification provides guidance on the environmental aspects to be considered
regarding equipment and accessories produced for the LPG industry and the following is addressed:
a) design;
b) manufacture;
c) packaging;
d) use and operation; and
e) disposal.
All pressures are gauge pressure unless otherwise stated.
NOTE This document requires measurement of material properties, dimensions and pressures. All such
measurements are subject to a degree of uncertainty due to tolerances in measuring equipment, etc. It may be
beneficial to refer to the leaflet “Measurement uncertainty leaflet SP INFO 2000 27” [13].
5
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SIST EN 14427:2022
EN 14427:2022 (E)
1 Scope
This document:
— specifies minimum requirements for materials, design, construction, prototype testing and routine
manufacturing inspections of fully wrapped composite cylinders with a water capacity from 0,5 litre
up to and including 150 litres for liquefied petroleum gases (LPG) exposed to ambient temperatures,
with a test pressure of at least 30 bar;
— is only applicable to cylinders which are fitted with a pressure relief valve (see 4.1.3);
— is applicable to cylinders with a liner of metallic material (welded or seamless) or non-metallic
material (or a mixture thereof), reinforced by fibres of glass, carbon or aramid (or a mixture thereof);
— is also applicable to composite cylinders without liners.
Cylinders manufactured to this document are suitable for temperatures down to −40 °C.
This document does not address the design, fitting and performance of removable protective sleeves.
Where these are fitted, the choice of material and sleeve performance are expected to be considered
separately.
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 1442, LPG equipment and accessories - Transportable refillable welded steel cylinders for LPG - Design
and construction
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 Rm value of less than 1100 MPa
EN 12165, Copper and copper alloys - Wrought and unwrought forging stock
EN 12807, LPG equipment and accessories - Transportable refillable brazed steel cylinders for liquefied
petroleum gas (LPG) - Design and construction
EN 13110, LPG equipment and accessories - Transportable refillable welded aluminium cylinders for
liquefied petroleum gas (LPG) - Design and construction
EN 14140, LPG equipment and accessories - Transportable refillable welded steel cylinders for LPG -
Alternative design and construction
EN 14717, Welding and allied processes - Environmental check list
EN 14894, LPG equipment and accessories - Cylinder and drum marking
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)
6
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SIST EN 14427:2022
EN 14427:2022 (E)
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 1133-1, Plastics - Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR)
of thermoplastics - Part 1: Standard method (ISO 1133-1)
EN ISO 1133-2, Plastics - Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR)
of thermoplastics - Part 2: Method for materials sensitive to time-temperature history and/or moisture (ISO
1133-2)
EN ISO 1183-1, Plastics - Methods for determining the density of non-cellular plastics - Part 1: Immersion
method, liquid pycnometer method and titration method (ISO 1183-1)
EN ISO 1183-2, Plastics - Methods for determining the density of non-cellular plastics - Part 2: Density
gradient column method (ISO 1183-2)
EN ISO 1183-3, Plastics - Methods for determining the density of non-cellular plastics - Part 3: Gas
pyknometer method (ISO 1183-3)
EN ISO 2555, Plastics - Resins in the liquid state or as emulsions or dispersions - Determination of apparent
viscosity using a single cylinder type rotational viscometer method (ISO 2555)
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 9227:2017, Corrosion tests in artificial atmospheres - Salt spray tests (ISO 9227:2017)
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 9809-3, Gas cylinders - Design, construction and testing of refillable seamless steel gas cylinders and
tubes - Part 3: Normalized steel cylinders and tubes (ISO 9809-3)
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)
EN ISO 15512, Plastics - Determination of water content (ISO 15512)
7
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SIST EN 14427:2022
EN 14427:2022 (E)
EN ISO 16474-3:2021, Paints and varnishes - Methods of exposure to laboratory light sources - Part 3:
Fluorescent UV lamps (ISO 16474-3:2021)
ISO 3341, Textile glass — Yarns — Determination of breaking force and breaking elongation
ISO 8521, Glass-reinforced thermosetting plastic (GRP) pipes — Test methods for the determination of the
initial circumferential tensile wall strength
ISO 11357-3, Plastics — Differential scanning calorimetry (DSC) — Part 3: Determination of temperature
and enthalpy of melting and crystallization
ASTM D 2196, Test methods for rheological properties of non-newtonian materials by rotational
(Brookfield type) viscometer
ASTM D 2290A, Standard Test Method for Apparent Hoop Tensile Strength of Plastic or Reinforced Plastic
Pipe
ASTM D 2291, Standard practice for fabrication of ring test specimens for glass-resin composites
ASTM D 2343, Standard test method for tensile properties of glass fibre strands, yarns and rovings used in
reinforced plastics
ASTM D 2344, Standard test method for short-beam strength of polymer matrix composite materials and
their laminates
ASTM D 3418, Standard test method for transition temperatures and enthalpies of fusion and
crystallization of polymers by differential scanning calorimetry
ASTM D 4018, Standard test methods for tensile properties of continuous filament carbon and graphite fibre
tows
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
liquefied petroleum gas
LPG
low pressure liquefied 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 mainly of propane, propene, butane,
butane isomers, butene with traces of other hydrocarbon gases
3.2
ambient test temperature
temperature of surroundings varying between 10 °C and 35 °C (for test purposes only)
8
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SIST EN 14427:2022
EN 14427:2022 (E)
3.3
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
3.4
batch
quantity of fibres, pre-impregnated fibres or components of the matrix system homogeneous
quantity of material, identified and certified as such by the supplier
3.5
batch
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
3.6
batch
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
3.7
batch
quantity of finished cylinders, plus cylinders for destructive testing, of
the same nominal diameter, thickness, length and design
Note 1 to entry: The batch may contain different batches of liners, providing the batches are nominally the same
and have had the same treatment, fibres and matrix materials.
3.8
batch
quantity of finished cylinders, plus cylinders for destructive testing,
of the same nominal diameter, thickness, length and design
3.9
burst pressure
highest pressure reached in a cylinder or liner during the relevant burst test
3.10
composite overwrap
fibres, or fibres embedded in a matrix taken together as a combined unit
3.11
elastomeric material
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
3.12
exterior coating
layer of clear or pigmented material applied to the cylinder as protection
9
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SIST EN 14427:2022
EN 14427:2022 (E)
3.13
fibre
strand
load-carrying part of the composite overwrap
EXAMPLE glass, aramid or carbon
3.14
fully wrapped composite cylinder
cylinder reinforced by wrapping to take both circumferential and longitudinal stress
Note 1 to entry: These are referred within this document as types 3, 4 and 5 (refer to 3.23, 3.24 and 3.25).
3.15
liner
metallic or non-metallic vessel that retains the LPG in the cylinder, but may also contribute to the
mechanical behaviour of the cylinder
Note 1 to entry: This is a load sharing liner.
3.16
neck ring
collar or ring with or without external threads, securely attached to the cylinder neck by means other
than welding, brazing or soldering
3.17
non-load sharing liner
liner made of material(s) with a stiffness (e-modulus) that is less than 1/10 of the fibre stiffness and is
intended only to prevent diffusion of LPG
3.18
non-metallic liner
liner made from thermoplastic, thermosetting, or elastomer material or a combination thereof
3.19
matrix
material which is used to bind and hold the fibres in place
3.20
thermoplastic
plastics capable of being repeatedly softened by increase of temperature and hardened by decrease of
temperature
3.21
thermoset
plastics which when cured by the application of heat or chemical means changes into a substantially
infusible and insoluble product
3.22
removable protective sleeve
external sleeve intended to provide protection to the cylinder during operation which is not an integral
part of the design, not permanently fixed to the cylinder but which can be removed during service without
destroying the sleeve without the use of special tools
10
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SIST EN 14427:2022
EN 14427:2022 (E)
3.23
permanent protective attachment
integral part of the cylinder design affixed to composite cylinders (type 2 to 5) covering part of or the
entire surface of the cylinder, providing functions during handling, transport, and use
3.24
Type 3 cylinder
fully wrapped cylinder with a load-sharing metal liner and composite reinforcement on both cylindrical
and dome ends
3.25
Type 4 cylinder
fully wrapped cylinder with a non-load sharing liner and composite reinforcement on both cylindrical
and dome ends
3.26
Type 5 cylinder
fully wrapped cylinder without a liner and with composite reinforcement on both the cylindrical portion
and the dome ends
3.27
major interruption
where a process is halted for more than 6 hours, due to an unscheduled event
EXAMPLE break down of production equipment needing replacement
4 Design and manufacture
4.1 General
4.1.1 Fully wrapped composite LPG cylinders may be manufactured with a metallic or non-metallic
liner or without a liner. The composite overwrap shall not be manufactured from two or more parts
joined together regardless of the joining methods (e.g. using adhesive).
The thicknesses of the cylinder, including any liner, shall be determined by satisfactory completion of the
performance tests described in Clause 5. No design calculations are required.
The cylinder may also include an external coating and/or additional parts such as valve shrouds/handles,
bases and permanent protective attachments. Where these are an integral part of the design, they shall
be permanently fixed to the cylinder such that
...
SLOVENSKI STANDARD
oSIST prEN 14427:2020
01-november-2020
Oprema in pribor za utekočinjeni naftni plin (UNP) - Premične, ponovno polnljive
jeklenke iz kompozitnih materialov za UNP - Konstruiranje in izdelava
LPG equipment and accessories - Transportable refillable composite cylinders for LPG -
Design and construction
Flüssiggas-Geräte und Ausrüstungsteile - Ortsbewegliche wiederbefüllbare
vollumwickelte Flaschen aus Verbundwerkstoff für Flüssiggas (LPG) - Gestaltung und
Konstruktion
Équipements pour gaz de pétrole liquéfiés et leurs accessoires - Bouteilles entièrement
bobinées en matériau composite,transportables et rechargeables pour gaz de pétrole
liquéfié (GPL) - Conception et fabrication
Ta slovenski standard je istoveten z: prEN 14427
ICS:
23.020.35 Plinske jeklenke Gas cylinders
oSIST prEN 14427:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 14427:2020
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oSIST prEN 14427:2020
DRAFT
EUROPEAN STANDARD
prEN 14427
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2020
ICS 23.020.35 Will supersede EN 14427:2014
English Version
LPG equipment and accessories - Transportable refillable
composite cylinders for LPG - Design and construction
Équipements pour gaz de pétrole liquéfiés et leurs Flüssiggas-Geräte und Ausrüstungsteile -
accessoires - Bouteilles entièrement bobinées en Ortsbewegliche wiederbefüllbare vollumwickelte
matériau composite,transportables et rechargeables Flaschen aus Verbundwerkstoff für Flüssiggas (LPG) -
pour gaz de pétrole liquéfié (GPL) - Conception et Gestaltung und Konstruktion
fabrication
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 286.
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 14427:2020 E
worldwide for CEN national Members.
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Contents
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Design and manufacture . 12
4.1 General . 12
4.2 Liner . 13
4.2.1 Metallic liners . 13
4.2.2 Non-metallic liners . 13
4.2.3 Design drawing . 14
4.3 Composite overwrap . 14
4.3.1 Materials . 14
4.3.2 Winding. 14
4.3.3 Type 5 Cylinders comprising two parts . 15
4.4 Finished cylinder . 15
4.4.1 Design drawings . 15
4.4.2 Type 5 Cylinders . 16
4.4.3 Autofrettage . 16
4.4.4 Manufacturing requirements for the finished cylinder . 17
4.4.5 Neck ring . 17
4.4.6 Cylinder stability . 17
4.4.7 Establishment of rejection criteria . 17
5 Cylinder and material tests . 18
5.1 General . 18
5.2 Test procedures and test requirements . 18
5.2.1 Test No. 1 – Composite material tests, including adhesives (where applicable) . 18
5.2.2 Test No. 2 – Liner material tests . 20
5.2.3 Test No. 3 – Liner burst test . 21
5.2.4 Test No. 4 –Proof pressure test of finished cylinders . 22
5.2.5 Test No. 5 – Cylinder burst test . 23
5.2.6 Test No. 6 – Pressure cycle test . 23
5.2.7 Test No. 7 – Artificial ageing test . 24
5.2.8 Test No. 8 – Exposure to elevated temperature at test pressure . 25
5.2.9 Test No. 9 – Cylinder body integrity impact tests . 26
5.2.10 Test No. 10 – Drop test . 30
5.2.11 Test No. 11 – Flawed cylinder test . 31
5.2.12 Test No. 12 – Extreme temperature cycle test . 31
5.2.13 Test No. 13 – Fire resistance test . 33
5.2.14 Test No. 14 – Spike puncture test . 34
5.2.15 Permeability test of Type 4 and 5 cylinders . 35
5.2.16 Test No. 16 – Torque test . 36
5.2.17 Test No. 17 – Neck strength test . 36
5.2.18 Test No. 18 – Neck ring test . 37
5.3 Failure to meet test requirements . 37
5.3.1 Metallic liners . 37
2
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5.3.2 Complete cylinder . 37
6 Conformity assessment . 38
7 Marking . 38
Annex A (normative) Prototype testing, design variant testing and production testing . 39
A.1 General . 39
A.2 Prototype testing . 39
A.2.1 General . 39
A.2.2 Definition of new design . 39
A.2.3 Prototype testing requirements . 40
A.2.4 Prototype testing certificate . 42
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 . 43
A.3.2.3 Equivalent Matrix . 43
A.3.2.4 Equivalent liner . 45
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 . 52
A.4.6 Batch acceptance certificate . 53
Annex B (informative) Examples of type approval and production testing certificates . 54
B.1 Type approval certificate – Type 3 cylinders . 54
B.2 Type approval certificate – Type 4 cylinders . 55
B.3 Type approval certificate – Type 5 cylinders . 56
B.4 Design variant approval certificate – Type 3 cylinders . 58
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B.5 Production test certificate . 59
Bibliography . 61
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European foreword
This document (prEN 14427:2020) has been prepared by Technical Committee CEN/TC 286 “Liquefied
petroleum gas equipment and accessories”, the secretariat of which is held by NSAI.
This document will be submitted to the enquiry.
This document will supersede EN 14427:2014.
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
document.
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Introduction
This document calls for the use of substances and procedures that can be injurious to health if adequate
precautions 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.
It has been assumed in the drafting of this document that the execution of its provisions is entrusted to
appropriately qualified and experienced people.
Protection of the environment is a key political issue in Europe and elsewhere, for CEN/TC 286 this is
covered in CEN/TS 16765 [17] and this Technical Specification should be read in conjunction with this
standard. This Technical Specification provides guidance on the environmental aspects to be considered
regarding equipment and accessories produced for the LPG industry and the following is addressed:
a) design;
b) manufacture;
c) packaging;
d) use and operation; and
e) disposal.
All pressures are gauge unless otherwise stated.
NOTE This document requires measurement of material properties, dimensions and pressures. All such
measurements are subject to a degree of uncertainty due to tolerances in measuring equipment, etc. It may be
beneficial to refer to the leaflet “Measurement uncertainty leaflet SP INFO 2000 27” [14].
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1 Scope
This document
— specifies minimum requirements for materials, design, construction, prototype testing and routine
manufacturing inspections of fully wrapped composite cylinders with a water capacity from 0,5 litre
up to and including 150 litres for liquefied petroleum gases (LPG) exposed to ambient temperatures,
with a test pressure of at least 30 bar;
— is only applicable to cylinders which are fitted with a pressure relief valve (see 4.1.3);
— is applicable to cylinders with a liner of metallic material (welded or seamless) or non-metallic
material (or a mixture thereof), reinforced by fibres of glass, carbon or aramid (or a mixture thereof);
— is also applicable to composite cylinders without liners.
Cylinders manufactured to this document are suitable for temperatures down to −40 °C.
This document does not address the design, fitting and performance of removable protective sleeves.
Where these are fitted, the choice of material and sleeve performance should be considered separately.
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 1442, LPG equipment and accessories - Transportable refillable welded steel cylinders for LPG - Design
and construction
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 Rm value of less than 1100 MPa
EN 12165, Copper and copper alloys - Wrought and unwrought forging stock
EN 12807, LPG equipment and accessories - Transportable refillable brazed steel cylinders for liquefied
petroleum gas (LPG) - Design and construction
EN 13110, LPG equipment and accessories - Transportable refillable welded aluminium cylinders for
liquefied petroleum gas (LPG) - Design and construction
EN 14140, LPG equipment and accessories - Transportable refillable welded steel cylinders for LPG -
Alternative design and construction
EN 14717, Welding and allied processes - Environmental check list
EN 14894, LPG equipment and accessories - Cylinder and drum marking
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)
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EN ISO 175, Plastics - Methods of test for the determination of the effects of immersion in liquid chemicals
(ISO 175)
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 1133 (all parts), Plastics - Determination of the melt mass-flow rate (MFR) and the melt volume-
flow rate (MVR) of thermoplastics (ISO 1133)
EN ISO 1183-1, Plastics - Methods for determining the density of non-cellular plastics - Part 1: Immersion
method, liquid pycnometer method and titration method (ISO 1183-1)
EN ISO 1183-2, Plastics - Methods for determining the density of non-cellular plastics - Part 2: Density
gradient column method (ISO 1183-2)
EN ISO 1183-3, Plastics - Methods for determining the density of non-cellular plastics - Part 3: Gas
pyknometer method (ISO 1183-3)
EN ISO 2555, Plastics - Resins in the liquid state or as emulsions or dispersions - Determination of apparent
viscosity using a single cylinder type rotational viscometer method (ISO 2555)
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 3231, Paints and varnishes - Determination of resistance to humid atmospheres containing sulfur
dioxide (ISO 3231)
EN ISO 7866, Gas cylinders - Refillable seamless aluminium alloy gas cylinders - Design, construction and
testing (ISO 7866)
EN ISO 9227, Corrosion tests in artificial atmospheres - Salt spray tests (ISO 9227)
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 9809-3, Gas cylinders - Design, construction and testing of refillable seamless steel gas cylinders and
tubes - Part 3: Normalized steel cylinders and tubes (ISO 9809-3)
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 14245, Gas cylinders - Specifications and testing of LPG cylinder valves - Self-closing (ISO 14245)
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EN ISO 15995, Gas cylinders - Specifications and testing of LPG cylinder valves - Manually operated (ISO
15995)
EN ISO 15512, Plastics - Determination of water content (ISO 15512)
EN ISO 16474-3:2013, Paints and varnishes - Methods of exposure to laboratory light sources - Part 3:
Fluorescent UV lamps (ISO 16474-3)
ISO 1637, Wrought copper and copper alloy rod and bar — Technical conditions of delivery
ISO 3341, Textile glass — Yarns — Determination of breaking force and breaking elongation
ISO 4587, Adhesives — Determination of tensile lap-shear strength of rigid-to-rigid bonded assemblies
ISO 8521, Glass-reinforced thermosetting plastic (GRP) pipes — Test methods for the determination of the
initial circumferential tensile wall strength
ISO 11357-3, Plastics — Differential scanning calorimetry (DSC) — Part 3: Determination of temperature
and enthalpy of melting and crystallization
ASTM D 2196, Test methods for rheological properties of non-newtonian materials by rotational
(Brookfield type) viscometer
ASTM D 2290, Test method for apparent hoop tensile strength of plastics and reinforced plastic by split disk
method
ASTM D 2291 Standard practice for fabrication of ring test specimens for glass-resin composites
ASTM D 2343, Standard test method for tensile properties of glass fibre strands, yarns and rovings used in
reinforced plastics
ASTM D 2344, Standard test method for short-beam strength of polymer matrix composite materials and
their laminates
ASTM D 3418, Standard test method for transition temperatures and enthalpies of fusion and
crystallization of polymers by differential scanning calorimetry
ASTM D 4018 Standard test methods for tensile properties of continuous filament carbon and graphite fibre
tows
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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 http://www.electropedia.org/
3.1
liquefied petroleum gas
LPG
low pressure liquefied 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 mainly of propane, propene, butane,
butane isomers, butene with traces of other hydrocarbon gases
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3.2
ambient test temperature
temperature of surroundings varying between 10 °C and 35 °C (for test purposes only)
3.3
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
3.4
batch
of fibres, pre-impregnated fibres or components of the matrix system homogeneous quantity of
material, identified and certified as such by the supplier
3.5
batch
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
3.6
batch
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
3.7
batch
quantity of up to 200 finished cylinders, plus cylinders for destructive
testing, of the same nominal diameter, thickness, length and design
Note 1 to entry: The batch may contain different batches of liners, providing the batches are nominally the same
and have had the same treatment, fibres and matrix materials.
3.8
batch
quantity of up to 200 finished cylinders, plus cylinders for destructive
testing, of the same nominal diameter, thickness, length and design
3.9
burst pressure
highest pressure reached in a cylinder or liner during the relevant burst test
3.10
composite overwrap
fibres, or fibres embedded in a matrix taken together as a combined unit
3.11
elastomeric material
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
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3.12
exterior coating
layer of clear or pigmented material applied to the cylinder as protection
3.13
fibre
strand
load-carrying part of the composite overwrap e.g. glass, aramid or carbon
3.14
fully wrapped composite cylinder
cylinder reinforced by wrapping to take both circumferential and longitudinal stress
Note
...
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