SIST EN 17533:2025
(Main)Gaseous hydrogen - Cylinders and tubes for stationary storage
Gaseous hydrogen - Cylinders and tubes for stationary storage
This document specifies the requirements for the design, manufacture and testing of cylinders, tubes and other pressure vessels of steel, stainless steel, aluminium alloys or of non-metallic construction material. These are intended for the stationary storage of gaseous hydrogen of up to a maximum water capacity of 10 000 l and a maximum allowable working pressure not exceeding 1 100 bar, of seamless metallic construction (Type 1) or of composite construction (Types 2, 3 and 4), hereafter referred to as pressure vessels.
NOTE Additional requirements with regard to assemblies (manifolded cylinders and tubes and other pressure vessels) are not covered by this document.
This document is not applicable to Type 2 and 3 vessels with welded liners.
This document is not applicable to pressure vessels used for solid, liquid hydrogen or hybrid cryogenic-high pressure hydrogen storage applications.
This document is not applicable to external piping which can be designed according to recognized standards.
Gasförmiger Wasserstoff - Flaschen und Großflaschen zur ortsfesten Lagerung
Dieses Dokument legt die Anforderungen für die Auslegung, Herstellung und Prüfung von Flaschen, Großflaschen und sonstigen Druckbehältern aus Stahl, nichtrostendem Stahl, Aluminiumlegierungen oder nichtmetallischen Baustoffen fest. Diese sind für die ortsfeste Lagerung von gasförmigem Wasserstoff bis zu einem maximalen Fassungsraum von 10 000 l und einem höchstzulässigen Betriebsdruck von nicht mehr als 1 100 bar vorgesehen, weisen eine nahtlose metallische Bauart (Typ 1) oder Composite-Bauart (Typ 2, Typ 3 und Typ 4) auf und werden nachstehend als Druckbehälter bezeichnet.
ANMERKUNG Zusätzliche Anforderungen hinsichtlich Baugruppen (mit Sammelleitungen versehene Flaschen und Großflaschen sowie sonstige Druckbehälter) werden nicht durch dieses Dokument abgedeckt.
Dieses Dokument ist nicht anwendbar auf Behälter vom Typ 2 und Typ 3 mit geschweißten Linern.
Dieses Dokument ist nicht anwendbar auf Druckbehälter, die für Anwendungen zur Lagerung von festem Wasserstoff, flüssigem Wasserstoff oder Hybrid-Kryo-Hochdruck-Wasserstoff eingesetzt werden.
Dieses Dokument ist nicht anwendbar auf außenliegende Rohrleitungen, die nach anerkannten Normen ausgelegt werden können.
Hydrogène gazeux - Bouteilles et tubes pour stockage stationnaire
Le présent document spécifie les exigences en matière de conception, de fabrication et d’essai des bouteilles, tubes et autres récipients sous pression, en acier, acier inoxydable, alliages d’aluminium ou matériaux de construction non métalliques. Ces récipients sont destinés au stockage stationnaire de l’hydrogène gazeux jusqu’à une capacité maximale en eau de 10 000 l et une pression de service maximale admissible inférieure ou égale à 1 100 bar, de construction métallique sans soudure (Type 1) ou de construction composite (Type 2, Type 3 et Type 4), et sont appelés « récipients sous pression » dans la suite du document.
NOTE Le présent document ne couvre pas les exigences supplémentaires relatives aux assemblages (bouteilles et tubes reliés entre eux par une rampe et autres récipients sous pression).
Le présent document ne s’applique pas aux récipients de Type 2 et de Type 3 avec liner soudé.
Le présent document ne s’applique pas aux récipients sous pression utilisés pour le stockage de l’hydrogène solide, de l’hydrogène liquide ou les applications hybrides de stockage cryogénique à haute pression de l’hydrogène.
Le présent document ne s’applique pas aux tuyauteries extérieures qui peuvent être conçues conformément à des normes reconnues.
Plinasti vodik - Jeklenke in velike jeklenke za stacionarno shranjevanje
Ta dokument določa zahteve za načrtovanje, izdelavo in preskušanje jeklenk, velikih jeklenk indrugih tlačnih posod iz jekla, nerjavnega jekla, aluminijevih zlitin ali nekovinskih gradbenih materialov. Te jeklenke so namenjene stacionarnemu shranjevanju plinastega vodika z največjo vodno prostornino 10.000 l in največjim dovoljenim delovnim tlakom 1100 barov. Imajo nevarjeno kovinsko konstrukcijo (tip 1) ali kompozitno konstrukcijo (tipi 2, 3 in 4) in se v nadaljnjem besedilu imenujejo »tlačne posode«. OPOMBA: Dodatne zahteve glede sklopov (jeklenke, velike jeklenke in druge tlačne posode v zbiralniku) niso zajete v tem dokumentu. Ta dokument se ne uporablja za posode tipov 2 in 3 z varjenimi oblogami. Ta dokument se ne uporablja za tlačne posode, ki se uporabljajo za shranjevanje trdnega in tekočega vodika ali hibridnega kriogenskega vodika pod visokim tlakom. Ta dokument se ne uporablja za zunanje cevovode, ki jih je mogoče načrtovati v skladu s priznanimi standardi.
General Information
Relations
Overview
EN 17533:2025 - published by CEN - is the European standard that specifies requirements for the design, manufacture and testing of cylinders, tubes and other pressure vessels intended for the stationary storage of gaseous hydrogen. It applies to vessels of steel, stainless steel, aluminium alloys or non‑metallic construction with a maximum water capacity of 10 000 L and a maximum allowable working pressure (MAWP) up to 1 100 bar. Covered constructions include seamless metallic (Type 1) and composite (Types 2, 3 and 4) pressure vessels. The standard replaced EN 17533:2020 and provides technical rules and normative annexes for qualification and testing.
Note: EN 17533:2025 does not cover manifolded assemblies, Type 2/3 vessels with welded liners, solid/liquid hydrogen or hybrid cryogenic–high‑pressure storage, nor external piping.
Key Topics
- Scope and service conditions: MAWP, maximum/minimum temperature, maximum energy and defined pressure cycle life.
- Materials and compatibility: requirements for steels, stainless steels, aluminium alloys, fibre and matrix materials, and plastic liners.
- Design and stress analysis: burst pressure, test pressure, maximum defect sizing, protection of liners and bosses, and resistance to UV/humidity.
- Fatigue and cycle life methods: three accepted approaches - pressure cycling calculations (Annex A), fracture‑mechanics fatigue evaluation (Annex B) and performance testing (Annex C).
- Manufacturing and workmanship: forming, fibre winding, curing of resins, autofrettage for metallic vessels, and exterior environmental protection.
- Testing and acceptance criteria (Annex D): hydrogen compatibility, hydrogen sensitivity tests for metals, hydrostatic burst, ambient and extreme temperature pressure cycling, leak‑before‑break, bonfire, permeation and boss torque tests.
- Documentation and marking: required design drawings, material property data, manufacturing records and marking for traceability and certification.
Applications
EN 17533:2025 is essential for:
- Pressure vessel designers and manufacturers producing stationary hydrogen storage cylinders and tubes.
- Testing laboratories performing hydrogen compatibility, burst and cycle tests.
- Plant operators and system integrators specifying storage containers for hydrogen refueling stations, industrial gas plants, and energy storage installations.
- Certification bodies and regulators assessing conformity with European technical requirements.
Using EN 17533:2025 ensures safe, durable and traceable stationary hydrogen storage solutions that address high‑pressure performance, fatigue life and hydrogen‑specific material behaviours.
Related Standards
- Referenced transportable cylinder standards (used for pressure cycling methodology in Annex A)
- Material and testing standards cited in normative references (see EN 17533:2025 normative references for details)
Keywords: EN 17533:2025, gaseous hydrogen, stationary storage, hydrogen cylinders, pressure vessels, MAWP, pressure cycling, hydrogen compatibility, Type 1 Type 2 Type 3 Type 4.
Frequently Asked Questions
SIST EN 17533:2025 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Gaseous hydrogen - Cylinders and tubes for stationary storage". This standard covers: This document specifies the requirements for the design, manufacture and testing of cylinders, tubes and other pressure vessels of steel, stainless steel, aluminium alloys or of non-metallic construction material. These are intended for the stationary storage of gaseous hydrogen of up to a maximum water capacity of 10 000 l and a maximum allowable working pressure not exceeding 1 100 bar, of seamless metallic construction (Type 1) or of composite construction (Types 2, 3 and 4), hereafter referred to as pressure vessels. NOTE Additional requirements with regard to assemblies (manifolded cylinders and tubes and other pressure vessels) are not covered by this document. This document is not applicable to Type 2 and 3 vessels with welded liners. This document is not applicable to pressure vessels used for solid, liquid hydrogen or hybrid cryogenic-high pressure hydrogen storage applications. This document is not applicable to external piping which can be designed according to recognized standards.
This document specifies the requirements for the design, manufacture and testing of cylinders, tubes and other pressure vessels of steel, stainless steel, aluminium alloys or of non-metallic construction material. These are intended for the stationary storage of gaseous hydrogen of up to a maximum water capacity of 10 000 l and a maximum allowable working pressure not exceeding 1 100 bar, of seamless metallic construction (Type 1) or of composite construction (Types 2, 3 and 4), hereafter referred to as pressure vessels. NOTE Additional requirements with regard to assemblies (manifolded cylinders and tubes and other pressure vessels) are not covered by this document. This document is not applicable to Type 2 and 3 vessels with welded liners. This document is not applicable to pressure vessels used for solid, liquid hydrogen or hybrid cryogenic-high pressure hydrogen storage applications. This document is not applicable to external piping which can be designed according to recognized standards.
SIST EN 17533:2025 is classified under the following ICS (International Classification for Standards) categories: 23.020.30 - Pressure vessels, gas cylinders; 23.020.35 - Gas cylinders; 71.100.20 - Gases for industrial application. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 17533:2025 has the following relationships with other standards: It is inter standard links to SIST EN 17533:2020. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 17533:2025 is associated with the following European legislation: EU Directives/Regulations: 2014/68/EU. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase SIST EN 17533:2025 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2025
Nadomešča:
SIST EN 17533:2020
Plinasti vodik - Jeklenke in velike jeklenke za stacionarno shranjevanje
Gaseous hydrogen - Cylinders and tubes for stationary storage
Gasförmiger Wasserstoff - Flaschen und Großflaschen zur ortsfesten Lagerung
Hydrogène gazeux - Bouteilles et tubes pour stockage stationnaire
Ta slovenski standard je istoveten z: EN 17533:2025
ICS:
23.020.35 Plinske jeklenke Gas cylinders
71.100.20 Industrijski plini Gases for industrial
application
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 17533
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2025
EUROPÄISCHE NORM
ICS 71.100.20 Supersedes EN 17533:2020
English Version
Gaseous hydrogen - Cylinders and tubes for stationary
storage
Hydrogène gazeux - Bouteilles et tubes pour stockage Gasförmiger Wasserstoff - Flaschen und Großflaschen
stationnaire zur ortsfesten Lagerung
This European Standard was approved by CEN on 7 April 2025.
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, Türkiye 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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17533:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 7
Introduction . 8
1 Scope . 9
2 Normative references . 9
3 Terms, definitions and symbols . 10
3.1 Terms and definitions . 10
3.2 Symbols . 15
4 Specified service conditions . 16
4.1 Maximum allowable working pressure . 16
4.2 Maximum allowable energy . 16
4.3 Maximum and minimum allowable temperature . 16
4.4 Pressure cycle life . 16
4.5 Methods to define the acceptable number of pressure cycles or fatigue behaviour for in
service performance . 16
4.5.1 General. 16
4.5.2 Method 1 - Pressure cycling calculation using design standards for transportable
applications – Method described in Annex A . 16
4.5.3 Method 2 - Fatigue evaluation using fracture mechanics – Method described in Annex B
(Type 1 and Type 2) . 16
4.5.4 Method 3 - Fatigue evaluation based on performance testing – Method described in
Annex C . 17
4.6 Service life . 17
5 Additional service conditions . 17
5.1 General. 17
5.2 Environmental conditions . 17
5.3 Fire conditions . 17
6 Information to be recorded . 17
6.1 General. 17
6.2 Statement of service . 17
6.3 Design, drawings and information . 18
6.4 Material property data . 19
6.5 Manufacturing data . 19
6.6 Retention of records . 19
7 Material properties . 20
7.1 Compatibility . 20
7.2 Steel. 20
7.3 Stainless steels . 20
7.4 Aluminium alloys . 20
7.5 Fibre material . 20
7.6 Matrix materials . 20
7.7 Plastic liner material . 20
8 Requirements for new design . 21
9 Minimum requirement for new designs . 21
9.1 Stress analysis . 21
9.1.1 General . 21
9.1.2 Burst pressure and fibre stress ratio (not applicable if Annex B is used) . 22
9.1.3 Test pressure. 22
9.1.4 Maximum defect size in metallic materials . 23
9.1.5 Protection liner and boss against corrosion . 23
9.1.6 Resistance to UV emissions . 23
9.1.7 Resistance to humidity . 23
9.1.8 Protective layer . 23
9.2 Construction and workmanship . 23
9.2.1 Materials . 23
9.2.2 Openings, neck threads, neck ring, foot ring, attachment for support . 24
9.2.3 Forming . 24
9.2.4 Fibre winding . 24
9.2.5 Curing of thermosetting resins . 25
9.2.6 Autofrettage . 25
9.2.7 Exterior environmental protection. 25
9.3 Production and batch tests . 26
9.3.1 Production tests . 26
9.3.2 Batch tests . 26
10 Markings . 29
11 Preparation for dispatch . 30
Annex A (informative) Pressure cycling calculation using design standards for transportable
applications . 31
A.1 General . 31
A.2 Requirements . 33
A.2.1 General requirements . 33
A.2.2 Specific requirements . 33
A.3 Marking . 35
A.4 Certificate . 36
A.5 Examples of calculation for PS (MAWP) . 36
A.5.1 Type 1 cylinder to EN ISO 9809-1 with P /P of 200/300 bar in Europe . 36
w h
A.5.2 Type 3 cylinder to ISO 11119-2 with P /P of 200/300 bar in Europe . 36
w h
A.5.3 Type 1 cylinder to EN ISO 9809-1 with P /P of 700/1 050 bar in Europe . 36
w h
A.5.4 Type 3 cylinder to ISO 11119-2 with P /P of 1 000/1 500 bar in Europe . 36
w h
A.6 Example of cycle life calculation . 37
Annex B (normative) Design and calculation and cycle life definition by fracture mechanics (Type
1 and Type 2) . 38
B.1 Purpose and scope . 38
B.2 Methodology . 38
B.3 Exemption for low alloy steels . 38
Annex C (normative) Design evaluation based on performance testing . 39
C.1 Testing . 39
C.1.1 General. 39
C.1.2 Material tests . 39
C.1.3 Pressure vessel tests . 40
C.1.4 Qualification and design changes . 43
Annex D (normative) Test methods and acceptance criteria . 46
D.1 Hydrogen compatibility . 46
D.2 Hydrogen sensitivity tests for metals . 46
D.2.1 General. 46
D.2.2 Test method 1 – Fatigue testing of tensile specimens . 46
D.2.3 Test method 2 – Fatigue testing of disks . 48
D.3 Tensile properties of plastics . 49
D.4 Softening temperature of plastics . 49
D.5 Resin properties tests . 49
D.6 Hydrostatic burst pressure test . 49
D.7 Ambient temperature pressure cycling for cycle life definition . 50
D.7.1 Full amplitude pressure cycling . 50
D.7.2 Partial amplitude pressure cycling . 50
D.7.3 Alternative to D.7.1 and D.7.2 . 50
D.7.4 Parameters to be monitored and recorded . 51
D.8 Leak before break (LBB) test . 51
D.9 Bonfire test . 51
D.10 High strain impact test . 51
D.11 Accelerated stress rupture test . 51
D.12 Extreme temperature pressure cycling . 51
D.13 Permeation test . 52
D.14 Boss torque test . 52
D.15 Hydrogen gas cycling test (for Type 4 only) . 52
D.16 Hardness test . 53
D.17 Hydraulic test . 53
D.18 Leak test . 53
D.19 Coating tests . 53
D.20 Coating batch tests. 54
D.20.1 Coating thickness . 54
D.20.2 Coating adhesion . 54
D.21 Impact damage test (optional). 54
Annex E (informative) Verification of stress ratios using strain gauges . 55
Annex F (informative) Non-destructive examination (NDE) defect size by flawed pressure vessel
cycling . 56
Annex G (informative) Manufacturer’s information for handling, use and inspection of pressure
vessels . 57
G.1 General . 57
G.2 Distribution . 57
G.3 Reference to existing codes, standards and regulations . 57
G.4 Pressure vessel handling . 57
G.5 Installation . 57
G.6 Use of pressure vessels . 58
G.7 In-service inspection . 58
G.7.1 General . 58
G.7.2 Periodic re-qualification . 58
G.7.3 Pressure vessels having experienced impact damage . 58
G.7.4 Pressure vessels involved in fires . 58
Annex H (informative) Optional bonfire test . 59
H.1 General . 59
H.2 Cylinder test. 59
H.2.1 Cylinder set-up . 59
H.2.2 Fire source . 59
H.2.3 Temperature and pressure measurements . 59
H.2.4 General test requirements . 60
H.2.5 Test options . 60
H.3 PRD test . 60
H.4 Vent test . 61
H.5 System assessment . 61
H.5.1 Qualification limit envelope . 61
H.5.2 Service limit envelope . 61
H.5.3 Acceptable results . 61
H.6 Generation of a safety envelope and actual cylinder/PRD performance . 61
Annex I (informative) Information of factor of safety . 63
I.1 Purpose . 63
I.2 Background . 63
I.3 Recommended safety factor . 63
I.4 Discussion . 63
I.5 Conclusions . 65
I.6 Recommendations . 65
I.7 Further reading . 65
Bibliography . 66
European foreword
This document (EN 17533:2025) 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 2025, and conflicting national standards shall
be withdrawn at the latest by November 2025.
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 17533:2020.
— requirements for new design have been revised;
— addition of Figure A.1 Concept of Annex A;
— Annexes B and C have been revised.
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, Türkiye and the United
Kingdom.
Introduction
As the use of gaseous hydrogen evolves from the chemical industry into various emerging applications,
such as fuel for fuel cells, internal combustion engines and other speciality hydrogen applications, new
requirements are foreseen for seamless and composite pressure vessels, including higher number of
pressure cycles.
Requirements covering pressure vessels for stationary storage of compressed gaseous hydrogen are
listed in this document and are mainly intended to maintain or improve the level of safety for this
application.
1 Scope
This document specifies the requirements for the design, manufacture and testing of cylinders, tubes and
other pressure vessels of steel, stainless steel, aluminium alloys or of non-metallic construction material.
These are intended for the stationary storage of gaseous hydrogen of up to a maximum water capacity of
10 000 l and a maximum allowable working pressure not exceeding 1 100 bar, of seamless metallic
construction (Type 1) or of composite construction (Types 2, 3 and 4), hereafter referred to as pressure
vessels.
NOTE Additional requirements with regard to assemblies (manifolded cylinders and tubes and other pressure
vessels) are not covered by this document.
This document is not applicable to Type 2 and 3 vessels with welded liners.
This document is not applicable to pressure vessels used for solid, liquid hydrogen or hybrid cryogenic-
high pressure hydrogen storage applications.
This document is not applicable to external piping which can be designed according to recognized
standards.
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 ISO 306, Plastics — Thermoplastic materials — Determination of Vicat softening temperature (VST)
(ISO 306)
EN ISO 527-2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and
extrusion plastics (ISO 527-2)
EN ISO 1519, Paints and varnishes — Bend test (cylindrical mandrel) (ISO 1519)
EN ISO 2808, Paints and varnishes — Determination of film thickness (ISO 2808)
EN ISO 2812-1, Paints and varnishes — Determination of resistance to liquids — Part 1: Immersion in
liquids other than water (ISO 2812-1)
EN ISO 2409, Paints and varnishes — Cross-cut test (ISO 2409)
EN ISO 6272-2, Paints and varnishes — Rapid-deformation (impact resistance) tests — Part 2: Falling-
weight test, small-area indenter (ISO 6272-2)
EN ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method (ISO 6506-1)
EN ISO 7225, Gas cylinders — Precautionary labels (ISO 7225)
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 9809-4, 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 (ISO 9809-4)
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 11114-4, 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 11439, Gas cylinders — High pressure cylinders for the on-board storage of natural gas as a fuel for
automotive vehicles (ISO 11439)
EN ISO 14130, Fibre-reinforced plastic composites — Determination of apparent interlaminar shear
strength by short-beam method (ISO 14130)
EN ISO 16474-1, Paints and varnishes — Methods of exposure to laboratory light sources — Part 1: General
guidance (ISO 16474-1)
EN ISO 16474-3, Paints and varnishes — Methods of exposure to laboratory light sources — Part 3:
Fluorescent UV lamps (ISO 16474-3)
ASTM D3170/D3170M-14, Standard Test Method for Chipping Resistance of Coatings
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology 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
stationary storage
pressurized storage in a fixed location for a fixed purpose that is not transported while pressurized
3.1.2
Type 1 pressure vessel
metal seamless cylindrical pressure vessel
Note 1 to entry: All metal multi-layered non-seamless vessels are not covered in this document. For reference,
several types of multi-layered pressure vessels are addressed by ASME BPVC Section VII and Chinese standards GB
150 and GB/T 26466.
3.1.3
Type 2 pressure vessel
hoop wrapped cylindrical pressure vessel with a load-sharing metal liner (3.1.12) and composite
reinforcement on the cylindrical part only
3.1.4
Type 3 pressure vessel
fully wrapped cylindrical pressure vessel with a load-sharing metal liner (3.1.12) and composite
reinforcement on both the cylindrical part and dome ends
3.1.5
Type 4 pressure vessel
fully wrapped cylindrical pressure vessel with a non-load-sharing liner (3.1.14) and composite
reinforcement on both the cylindrical part and the dome ends
3.1.6
finished pressure vessel
pressure vessel, which is ready for use, typical of normal production, complete with identification marks
and external coating including integral insulation specified by the manufacturer, but free from non-
integral insulation or protection
Note 1 to entry: In the framework of this document, a tube or a cylinder is a finished pressure vessel.
3.1.7
batch of pressure vessels
batch of liners
set of manufactured finished pressure vessels (3.1.6) or liners (3.1.12) subject to a manufacturing quality
pass/fail criterion based on the results of specified tests performed on a specified number of units from
that set
3.1.8
matrix
material that is used to bind and hold the fibres in place
3.1.9
composite overwrap
combination of fibres (including steel wire) and matrix (3.1.8)
3.1.10
thermoplastic material
plastic capable of being repeatedly softened by an increase of temperature and hardened by a decrease
of temperature
3.1.11
thermosetting material
material capable of being changed into a substantially infusible and insoluble product when cured by heat
or by other means, such as radiation and catalysts
Note 1 to entry: These materials are resins and include polymers such as polyesters, epoxides, acrylics, urethanes
and phenolics.
Note 2 to entry: The resins may incorporate non-fibrous fillers, flame-retardants, pigments and stabilizers.
[SOURCE: ISO 25762:2009, 3.2.1]
3.1.12
liner
inner portion of the composite cylinder, comprising a metallic or non-metallic vessel, whose purpose is
both to contain the gas and transmit the gas pressure to the fibres
3.1.13
load-sharing liner
liner (3.1.12) that has a burst pressure (3.1.33) of at least 5 % of the minimum burst pressure of the
finished composite cylinder
3.1.14
non-load-sharing liner
liner (3.1.12) that has a burst pressure (3.1.33) less than 5 % of the nominal burst pressure of the finished
composite cylinder
3.1.15
boss
dome shaped metallic component mounted on one end or on the two ends of a non-metallic liner (3.1.12)
with a neck providing an opening and/or an external element of mechanical support
3.1.16
autofrettage
pressure application procedure which strains the metal liner (3.1.12) past its yield point sufficiently to
cause permanent plastic deformation, resulting in the liner having compressive stresses and the fibres
having tensile stresses when at zero internal gauge pressure
3.1.17
autofrettage pressure
pressure within the overwrapped composite pressure vessel at which the required distribution of
stresses between the liner (3.1.12) and the composite overwrap (3.1.9) is established
3.1.18
pre-stress
process of applying autofrettage (3.1.16) or controlled tension winding (3.1.19)
3.1.19
controlled tension winding
process used in manufacturing composite pressure vessels with metal liners (3.1.12) by which
compressive stresses in the liner and tensile stresses in the composite overwrap (3.1.9) at zero internal
pressure are obtained by winding the reinforcing fibres under controlled tension
3.1.20
cycle amplitude
ratio of pressure increase to maximum pressure in a pressure cycle (3.1.21)
Note 1 to entry: Cycle amplitude is expressed in %.
3.1.21
pressure cycle
pressure variation composed of one period of monotonic pressure increase up to a peak pressure
followed by one period of monotonic pressure decrease
Note 1 to entry: Pressure variations exclusively due to variations of ambient temperature are not counted as
pressure cycles.
3.1.22
full cycle
cycle of pressure amplitude between the maximum allowable working pressure (MAWP) (3.1.25) and
10 % of the MAWP
3.1.23
minimum allowable temperature
minimum temperature of any part of the pressure vessel for which it is designed
3.1.24
maximum allowable temperature
maximum temperature of any part of the pressure vessel for which it is designed
3.1.25
maximum allowable working pressure
MAWP (PS according to PED)
design pressure
maximum pressure to which the component is designed to be subjected to and which is the basis for
determining the strength of the component under consideration
Note 1 to entry: In the Pressure Equipment Directive (PED), PS is equal to the MAWP.
3.1.26
shallow pressure cycle
pressure cycle with an amplitude smaller than the amplitude of a full cycle
3.1.27
shallow pressure cycle life
maximum number of shallow pressure cycles (3.1.26) that the pressure vessel is designed to withstand in
hydrogen service
3.1.28
pressure cycle life
maximum number of pressure cycles (3.1.21) in hydrogen service that the pressure vessel is designed to
withstand in service
3.1.29
service life
maximum period for which the pressure vessel is designed to be in service based on fatigue life and stress
rupture characteristics of composite cylinders
Note 1 to entry: Service life is expressed in years.
Note 2 to entry: Service life usually depends on the pressure cycle (3.1.21) or other service conditions and
requirements from applicable standards. For composite cylinders, life in years is a requirement to address reliability
under stress rupture conditions, which is also an underlying basis for the required stress ratios (3.1.34).
3.1.30
stationary test pressure
TP
required pressure applied during a pressure test for the pressure vessel used in stationary service
Note 1 to entry: If Annex A is used, this is not to be confused with the test pressure (3.1.32) P used in e.g. the
h
EN ISO 9809 series for design purposes as transportable gas cylinder, see Figure A.1.
3.1.31
working pressure
settled pressure of a fully filled cylinder at a uniform temperature of 15 °C
Note 1 to entry: This term is normally used for transportable cylinders, see Annex A Figure A.1.
[SOURCE: ISO 11439:2013, 3.23, modified — Note 1 to entry has been added.]
3.1.32
test pressure
required pressure applied during a pressure test
3.1.33
burst pressure
highest pressure reached in a cylinder during a burst test
3.1.34
stress ratio
stress in fibre at specified minimum burst pressure (3.1.33) divided by stress at the MAWP (3.1.25)
3.1.35
pressure-activated pressure relief device
pressure-activated PRD
device designed to release pressure in order to prevent a rise in pressure above a specified value due to
emergency or abnormal conditions
Note 1 to entry: Pressure-activated PRDs may be either re-closing devices (such as valves) or non-re-closing
devices (such as rupture disks).
3.1.36
thermally activated pressure relief device
thermally activated PRD
device that activates by temperature to release pressure and prevent a pressure vessel from bursting due
to fire effects and which will activate regardless of the vessel pressure
3.1.37
design change
change in the selection of structural materials or dimensional change exceeding the tolerances as on the
design drawings
3.1.38
leakage
release of hydrogen through a crack, pore, or similar defect
Note 1 to entry: Permeation through the wall of a Type 4 pressure vessel that is less than the rates described in
D.13 is not considered a leakage.
3.1.39
operator
entity legally responsible for the use and maintenance of the vessel
3.2 Symbols
For the purposes of this document, the following terms and definitions apply.
ΔP difference between the minimum and the maximum of pressure during a given
i
actual pressure cycle (in bar)
ΔP maximum difference between the lower and the upper pressure during the cycling
max
pressure tests specified in the reference standard (in bar)
F design stress factor (ratio of equivalent wall stress at test pressure P to guarantee
h
minimum yield strength)
F hydrogen accelerating factor (see A.2.2.5), this factor is the multiplication factor to
a
be applied on equivalent cycles n calculation to take into account the ageing
eq
effect of H on cycling.
n number of cycles equivalent to full cycles (guaranteed in a given standard)
eq
n number of pressure cycle corresponding to ΔP
i i
P test pressure (in bar)
h
P working pressure (in bar)
w
a flaw size
N number of pressure cycles
C constant when fatigue is performed in hydrogen
H
ΔK range of the stress intensity factor during the fatigue cycle
R stress inten
...
SIST EN 17533:2025 is a critical standard focusing on the design, manufacture, and testing requirements for cylinders, tubes, and other pressure vessels intended for the stationary storage of gaseous hydrogen. The standard specifies these requirements for various construction materials, including steel, stainless steel, aluminum alloys, and non-metallic materials, which allows for broad applicability in the hydrogen storage industry. One of the main strengths of this standard lies in its detailed specifications which cater to seamless metallic construction (Type 1) and composite construction (Types 2, 3, and 4) pressure vessels. By defining maximum water capacities of up to 10,000 liters and allowable working pressures not exceeding 1,100 bar, it establishes a clear framework ensuring safety and reliability for the storage of gaseous hydrogen. This ensures that manufacturers of pressure vessels adhere to stringent guidelines, which is vital in promoting safety in hydrogen storage applications. Moreover, the exclusion of additional assemblies and specific applications, such as those involving solid and liquid hydrogen or external piping, sharpens the focus on stationary gaseous hydrogen storage. This targeted approach enhances the relevance of the standard for manufacturers and safety regulators alike, ensuring that the specified requirements are pertinent to modern industrial applications without unnecessary complications from unrelated systems. Overall, SIST EN 17533:2025 represents a highly relevant and well-defined standard in the evolving landscape of hydrogen storage, with a clear emphasis on the safety, durability, and effectiveness of equipment designed for gaseous hydrogen applications. Its comprehensive scope and focused applicability ensure that it meets the essential needs of stakeholders in the hydrogen energy sector.
SIST EN 17533:2025 문서는 고정식 수소 저장을 위한 실린더 및 튜브의 설계, 제조, 성능 시험에 대한 명확한 요구사항을 규정하고 있습니다. 이 표준은 최대 10,000 리터의 물 용량을 가진 가스 상태의 수소를 저장하기 위한 스틸, 스테인리스 스틸, 알루미늄 합금 또는 비금속 재료로 제작된 압력 용기의 설계 및 시험을 포함합니다. 이 표준의 강점은 다양한 재질에 대한 명확한 기준을 제시하여 제작사들이 안전하고 효과적인 압력 용기를 설계할 수 있도록 돕는다는 점입니다. 또한, 최대 허용 작업 압력이 1,100 bar로 명시되어 있어, 사용자가 안정적인 수소 저장 솔루션을 확보할 수 있게 합니다. 비금속으로 제작된 압력 용기도 포함되어 있어, 혁신적인 재료를 활용한 고성능 저장 시스템 개발을 촉진합니다. 그러나 SIST EN 17533:2025 문서는 용접 내장재를 갖춘 Type 2 및 3 압력 용기, 고체 및 액체 수소 또는 하이브리드 극저온-고압 수소 저장 응용 범위에는 적용되지 않는다는 점을 주의할 필요가 있습니다. 이러한 제한 사항은 특정 조건에 맞추어 안전 기준을 유지하며, 외부 배관 설계는 기존에 잘 알려진 표준에 따라 진행해야 한다는 점을 강조합니다. 결론적으로, SIST EN 17533:2025는 고정식 수소 저장을 위한 기초적인 안전 기준과 설계 효율성을 제공하며, 이 분야의 안전성을 강화하는 데 중요한 역할을 합니다. 이런 점은 이 문서가 수소 경제 활성화에 기여하는 바를 잘 보여줍니다.
SIST EN 17533:2025は、定置型水素貯蔵用のシリンダーおよびチューブに関する標準であり、特にガス状水素の貯蔵を目的とした設計、製造および試験の要件を定めています。この標準は、最大水容量10,000リットルおよび最大作業圧力1,100バールを超えない高圧容器をカバーしており、シームレス金属製（タイプ1）および複合材料製（タイプ2、3、4）に分類されるフレームワークを提供します。 この標準の強みは、多様な材料（鉄鋼、ステンレス鋼、アルミニウム合金、非金属）での設計と製造を体系的に規定している点にあります。これにより、異なる用途や条件に応じた高圧容器の信頼性と安全性を確保することができます。また、具体的な圧力バリエーションに基づいた技術的要件を明確にすることで、業界の標準化と品質向上を促進しています。 重要な点として、本標準は、溶接ライナー付きのタイプ2および3の容器には適用されないこと、固体および液体水素やハイブリッド低温・高圧水素貯蔵用アプリケーションの容器にも適用されないことが明記されています。このことから、対象となる用途が明確に限定され、ユーザーに対して具体的なガイダンスを提供しています。 この標準の関連性は、高圧水素の定置型貯蔵システムがますます重要視される現代において、特にクリーンエネルギーの分野で、その需要が高まる中で一層高まっています。水素経済の進展に伴い、この手引きは安全で効率的な貯蔵技術の導入を支援し、産業全体の安定性と進歩に寄与することが期待されます。
Die Norm SIST EN 17533:2025 ist ein grundlegendes Dokument, das spezifische Anforderungen für die Konstruktion, Herstellung und Prüfung von Druckbehältern, darunter Zylinder und Rohre, für die stationäre Speicherung von gasförmigem Wasserstoff festlegt. Der Geltungsbereich dieser Norm umfasst sowohl metallische Konstruktionen aus Stahl, Edelstahl und Aluminiumlegierungen als auch nichtmetallische Materialien. Die Norm definiert klare Vorgaben für Druckbehälter mit einem maximalen Wasserinhalt von 10.000 Litern und einem zulässigen Höchstbetriebsdruck von 1.100 bar. Ein wesentlicher Vorteil dieser Norm liegt in ihrer Fähigkeit, eine einheitliche Grundlage für die Entwicklung und den Betrieb von Druckbehältern zu schaffen. Dies ist insbesondere im Hinblick auf die Sicherheitsanforderungen von Bedeutung, da die Norm spezielle Kriterien für nahtlose metallische Konstruktionen (Typ 1) sowie für Verbundkonstruktionen (Typen 2, 3 und 4) enthält. Durch die klare Definition dieser Typen wird die geforderte Qualität und Sicherheit in der stationären Wasserstoffspeicherung gewährleistet. Die Norm SIST EN 17533:2025 ist besonders relevant in der sich rasant entwickelnden Wasserstoffwirtschaft, die zunehmend an Bedeutung gewinnt. Der Fokus auf die stationäre Speicherung von gaseförmigem Wasserstoff spielt eine zentrale Rolle, um die Effizienz und Sicherheit in diesem Bereich zu fördern. Besonders hervorzuheben ist, dass die Norm nicht für bestimmte Anwendungen wie die Speicherung von festem oder flüssigem Wasserstoff oder hybride kryogene Hochdruckanwendungen gilt, wodurch der Anwendungsbereich klar eingegrenzt wird. Zusammenfassend lässt sich sagen, dass die Norm SIST EN 17533:2025 durch ihre umfassenden Vorgaben und die klaren Richtlinien für die Konstruktion und den Betrieb von Druckbehältern für gasförmigen Wasserstoff eine wichtige Rolle im internationalen Standardisierungsprozess spielt. Ihre Relevanz für die Sicherheit und Effizienz in der Wasserstoffspeicherung ist unbestreitbar und bietet eine wertvolle Grundlage für die Umsetzung zeitgemäßer Technologien in diesem Sektor.
Le document SIST EN 17533:2025 établit des exigences précises pour la conception, la fabrication et les tests des cylindres, tubes et autres récipients sous pression destinés au stockage stationnaire de l'hydrogène gazeux. Ce standard s'applique à des récipients métalliques en acier, en acier inoxydable, en alliages d'aluminium ou en matériaux non métalliques, avec une capacité d'eau maximale de 10 000 litres et une pression de service maximale de 1 100 bars. En se concentrant sur les constructions métalliques sans soudure (Type 1) et les constructions composites (Types 2, 3 et 4), le document couvre une large gamme d’applications dans le domaine du stockage de l'hydrogène. Les forces majeures de cette norme résident dans sa capacité à établir des critères de sécurité rigoureux et une méthodologie de test claire pour les installations de stockage. En définissant les spécifications techniques nécessaires pour garantir l'intégrité structurelle et la sécurité des récipients sous pression, le document contribue à minimiser les risques associés à l'utilisation de l'hydrogène gazeux, un vecteur de transition énergétique prometteur. De plus, la norme SIST EN 17533:2025 est particulièrement pertinente dans le contexte actuel de la recherche sur des solutions énergétiques durables. En favorisant le développement d’infrastructures sûres pour le stockage de l'hydrogène, elle encourage l'innovation dans le secteur énergétique et aide les industries à conformer leurs pratiques aux exigences de sécurité modernes. Cependant, il est important de noter que certaines exigences supplémentaires concernant les assemblages, comme les cylindres et tubes manifolds, ne sont pas couvertes par ce document. De plus, cette norme ne s'applique pas aux récipients de Type 2 et 3 avec doublures soudées, ni aux récipients utilisés pour l’hydrogène solide, liquide ou les applications de stockage cryogéniques-haute pression. Ce champ d'application clairement défini contribue à éviter toute confusion quant à l'utilisation de la norme et garantit qu'elle reste pertinent pour les technologies et applications spécifiques pour lesquelles elle a été élaborée. En résumé, le SIST EN 17533:2025 représente un avancement significatif dans les normes de stockage stationnaire de l'hydrogène, avec une attention particulière portée sur la sécurité, la qualité et l'innovation. Ce standard est un atout essentiel pour le secteur, permettant de soutenir le développement durable et l'adoption de l'hydrogène comme source d'énergie de demain.
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