AS/NZS ISO 11515:2025
Gas cylinders – Refillable composite reinforced tubes of water capacity between 450 l and 3 000 l – Design, construction and testing
Standard specifies the minimum requirements for the materials, design, construction and performance testing of composite tubes with water capacities between 450 l and 3 000 l for storage and conveyance of compressed or liquefied gases with test pressures up to and including 1 600 bar and a design life of at least 15 years.
This document is identical with, and has been reproduced from, ISO 11515:2022 Gas cylinders – Refillable composite reinforced tubes of water capacity between 450 l and 3000 l – Design, construction and testing.
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AS/NZS ISO 11515:2025 Refillable composite reinforced tubes of water capacity between 450 l and 3 000 l - Design, construction and testing
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Inspection and testing
6 Materials
6.1 Liner materials
6.2 Composite overwrap
7 Design and manufacture
7.1 General
7.2 Design submission
7.3 Manufacturing
8 Type approval procedure
8.1 General
8.2 Prototype tests
8.3 New design
8.4 Design variants
8.5 Type approval test procedures and criteria
8.5.1 General
8.5.2 Hydraulic proof pressure test
8.5.3 Hydraulic volumetric expansion test
8.5.4 Liner burst test
8.5.5 Tube burst test
8.5.6 Ambient cycle test
8.5.7 Environmental cycle test
8.5.8 Flaw test
8.5.9 Blunt impact test
8.5.10 Fire resistance test
8.5.11 Neck strength test
8.5.12 Leak test
8.5.13 Accelerated stress rupture test
8.5.14 Permeability test
8.5.15 Gas cycle test
8.5.16 Coatings test
8.5.17 Salt spray test
8.5.18 Acid environment test
8.5.19 Vacuum test
8.5.20 High velocity impact (gunfire) test
8.5.21 Glass transition temperature test
8.5.22 Resin shear strength test
8.6 Failure of type approval tests
9 Inspection and testing at time of manufacture
9.1 Liners for Type 2 and Type 3 tubes
9.2 Failure of load-sharing liner batch tests
9.3 Liners for Type 4 tubes
9.4 Failure of non-load sharing liner batch tests
9.5 Overwrap materials
9.6 Composite tube
9.7 Failure of batch tests
10 Tube marking
10.1 General
10.2 Additional marking
Annex A (informative) Example of a design approval certificate
Annex B (informative) Example of a test report
Annex C (normative) Ultrasonic inspection for seamless steel liners and metal tubing
Annex D (informative) Guidance for calculating permeation rates when using trace gases
Bibliography
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AS/NZS ISO 11515:2025 Refillable composite reinforced tubes of water capacity between 450 l and 3 000 l - Design, construction and testing
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Inspection and testing
6 Materials
6.1 Liner materials
6.2 Composite overwrap
7 Design and manufacture
7.1 General
7.2 Design submission
7.3 Manufacturing
8 Type approval procedure
8.1 General
8.2 Prototype tests
8.3 New design
8.4 Design variants
8.5 Type approval test procedures and criteria
8.5.1 General
8.5.2 Hydraulic proof pressure test
8.5.3 Hydraulic volumetric expansion test
8.5.4 Liner burst test
8.5.5 Tube burst test
8.5.6 Ambient cycle test
8.5.7 Environmental cycle test
8.5.8 Flaw test
8.5.9 Blunt impact test
8.5.10 Fire resistance test
8.5.11 Neck strength test
8.5.12 Leak test
8.5.13 Accelerated stress rupture test
8.5.14 Permeability test
8.5.15 Gas cycle test
8.5.16 Coatings test
8.5.17 Salt spray test
8.5.18 Acid environment test
8.5.19 Vacuum test
8.5.20 High velocity impact (gunfire) test
8.5.21 Glass transition temperature test
8.5.22 Resin shear strength test
8.6 Failure of type approval tests
9 Inspection and testing at time of manufacture
9.1 Liners for Type 2 and Type 3 tubes
9.2 Failure of load-sharing liner batch tests
9.3 Liners for Type 4 tubes
9.4 Failure of non-load sharing liner batch tests
9.5 Overwrap materials
9.6 Composite tube
9.7 Failure of batch tests
10 Tube marking
10.1 General
10.2 Additional marking
Annex A (informative) Example of a design approval certificate
Annex B (informative) Example of a test report
Annex C (normative) Ultrasonic inspection for seamless steel liners and metal tubing
Annex D (informative) Guidance for calculating permeation rates when using trace gases
Bibliography
AS/NZS ISO 11515:2025
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.