SIST EN 12245:2022/oprA1:2026

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 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.

Ortsbewegliche Gasflaschen - Vollumwickelte Flaschen aus Verbundwerkstoffen

Bouteilles à gaz transportables - Bouteilles entièrement bobinées en matériaux composites

Premične plinske jeklenke - Popolnoma obvite jeklenke iz kompozitnih materialov - Dopolnilo A1

Ta dokument določa minimalne zahteve za materiale, oblikovanje, konstrukcijo, prototipno testiranje in redne proizvodne preglede popolnoma ovitih kompozitnih plinskih jeklenk za stisnjene, utekočinjene in raztopljene pline.
OPOMBA 1 Za namene tega dokumenta beseda "jeklenka" vključuje cevi (brezšivne prenosne tlačne posode z vodno kapaciteto, ki presega 150 l in ne več kot 3 000 l).
Ta dokument velja za jeklenke, ki vsebujejo oblogo iz kovinskega materiala (varjenega ali brezšivnega) ali nekovinskega materiala (ali njihove mešanice), ojačano z navitim kompozitom, sestavljenim iz vlaken stekla, ogljika ali aramida (ali njihove mešanice), vgrajenih v matrico.
Ta dokument velja tudi za kompozitne jeklenke brez oblog.
Ta dokument ne velja za plinske jeklenke, ki so delno prekrite z vlakni in se običajno imenujejo "hoop wrapped" jeklenke. Za "hoop wrapped" kompozitne jeklenke glejte EN 12257.
OPOMBA 2 Ta dokument ne obravnava oblikovanja, pritrditve in delovanja odstranljivih zaščitnih rokavov. Kjer so ti nameščeni, se obravnavajo ločeno.
Ta dokument je namenjen predvsem stisnjenim, utekočinjenim in raztopljenim plinom, razen LPG.
OPOMBA 3 Za namensko izdelane LPG jeklenke glejte EN 14427.

General Information

• Status: Not Published
• Public Enquiry End Date: 01-Jun-2026
• ICS: 23.020.35 - Gas cylinders
• Technical Committee: TLP - Pressure vessels
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 08-Apr-2026
• Due Date: 26-Aug-2026
• Directive: Not Harmonized2008/68/EC - Directive 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/TDG - Standards for referencing in the RID-ADR
• Ref Project: EN 12245:2022/prA1 - Transportable gas cylinders - Fully wrapped composite cylinders

Relations

• Revises: SIST EN 12245:2022 - Transportable gas cylinders - Fully wrapped composite cylinders
• Effective Date: 01-May-2026

Overview

SIST EN 12245:2022/oprA1:2026 is a European standard developed by CEN, focusing on the specifications for transportable gas cylinders known as fully wrapped composite cylinders. This standard outlines the minimum requirements for materials, design, construction, prototype testing, and routine manufacturing inspections for these types of cylinders, which are used to safely contain and transport compressed, liquefied, and dissolved gases.

Fully wrapped composite cylinders addressed by this standard include those with metallic or non-metallic liners, reinforced through composite winding with fibers such as glass, carbon, or aramid. Additionally, the standard extends to linerless composite cylinders. Notably, SIST EN 12245:2022/oprA1:2026 is not applicable to cylinders that are only partially covered by fiber wrap, commonly referred to as “hoop wrapped” cylinders, which are addressed by EN 12257. The standard also excludes removable protective sleeves and is not intended for dedicated LPG cylinders, which should comply with EN 14427.

Key Topics

• Material Selection and Requirements

  • Metallic and non-metallic liners, or their combinations, for optimal strength and compatibility
  • Use of composite fibers (glass, carbon, aramid) embedded in a matrix for reinforcement

• Design and Construction

  • Specifications for wall thickness, composite winding patterns, and integration of liners
  • Emphasis on construction to prevent gas leakage and ensure mechanical integrity

• Testing and Inspection

  • Detailed procedures for prototype testing, including burst tests and resistance to pressure cycles
  • Routine manufacturing inspections: visual, dimensional, weight, and capacity checks
  • Requirements for marking compliance and batch testing frequencies

• Safety Criteria

  • Specific burst pressure criteria to ensure cylinder integrity under pressure
  • Procedures for testing resistance to impact, fire, temperature cycles, and chemical compatibility

• Exclusions

  • Not applicable to hoop wrapped cylinders (EN 12257)
  • LPG applications require compliance with EN 14427

Applications

Fully wrapped composite cylinders governed by SIST EN 12245:2022/oprA1:2026 are essential in a variety of industries and applications, where lightweight and high-strength gas storage is required:

• Industrial Gases: Used for transportation and storage of industrial gases such as nitrogen, oxygen, and hydrogen.
• Medical Sector: Provides portable oxygen solutions for home care and ambulance use.
• Scuba Diving: Ensures safe, high-pressure storage of breathing gases for underwater activities.
• Firefighting and Rescue: Lightweight composite cylinders improve mobility for emergency personnel.
• Automotive and Aerospace: Utilized in fuel systems for vehicles powered by compressed natural gas (CNG) or hydrogen.

The use of composite materials makes these cylinders significantly lighter than traditional steel cylinders, improving safety, handling, and efficiency in transport and field applications.

Related Standards

Organizations and manufacturers working with gas cylinders should be aware of the following interconnected standards:

• EN 12257: Guidelines for hoop wrapped composite gas cylinders and tubes, which are only partially fiber-reinforced.
• EN 14427: Specifications for dedicated LPG composite cylinders.
• ISO 11119 Series: International standards for gas cylinders made of composite materials.
• EN ISO 9809: Standards for seamless steel gas cylinders.

By adhering to SIST EN 12245:2022/oprA1:2026, stakeholders ensure compliance with European regulations, achieve high levels of safety, and support efficient, reliable use of fully wrapped composite gas cylinders across multiple industries. Awareness of related standards helps ensure comprehensive compliance and compatibility in gas cylinder applications.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2026
Premične plinske jeklenke - Popolnoma obvite jeklenke iz kompozitnih materialov -
Dopolnilo A1
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/prA1
ICS:
23.020.35 Plinske jeklenke Gas cylinders
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
EN 12245:2022
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
April 2026
ICS 23.020.35
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 amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 23.

This draft amendment A1, if approved, will modify the European Standard EN 12245:2022. If this draft becomes an amendment,
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration.

This draft amendment 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, Türkiye 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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12245:2022/prA1:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Modification to 5.2.4.3 “Parameters to monitor during the test” . 4
2 Modification to 5.2.10.2 “Procedure” . 4
3 Modification to 5.2.10.3 “Criteria” . 4
4 Modification to A.2.4 “Prototype testing certificate” . 4
European foreword
This document (EN 12245:2022/prA1:2026) 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.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States s
...