ISO 11119-2:2020/Amd 1:2023

Overview

ISO 11119-2:2020/Amd 1:2023 is an important amendment to the international standard governing the design, construction, and testing of refillable composite gas cylinders and tubes. Specifically, this standard applies to fully wrapped fibre reinforced composite gas cylinders and tubes with load-sharing metal liners, with capacities up to 450 liters. Published by the International Organization for Standardization (ISO), this amendment updates testing requirements to enhance safety, durability, and reliability in gas cylinder applications.

This standard focuses on composite gas cylinders used widely across various industries where lightweight, high-strength, and reliable gas storage solutions are critical. By aligning design and testing protocols with this standard, manufacturers can ensure compliance with internationally recognized best practices, improving product safety and performance.

Key Topics

• Cylinder Construction: Fully wrapped fibre reinforced composite cylinders combined with load-sharing metal liners, optimized for up to 450 liters capacity.
• Design Specifications: Materials and structural requirements to meet high safety and mechanical strength standards.
• Testing Procedures: Updated pressurization cycle testing:
  • Cylinders must withstand 3,000 cycles at two-thirds of test pressure without failure.
  • An additional 9,000 cycles continue until the cylinder fails by leakage or burst, determining pass/fail criteria.
• Safety Requirements: Strict criteria to prevent burst failures during endurance testing, ensuring higher operational integrity.
• Amendment Highlights: Revision of cycle testing parameters reflects advances in material technology and performance validation.

Applications

ISO 11119-2:2020/Amd 1:2023 is critical for manufacturers, quality control engineers, and safety regulators involved in the production and certification of composite gas cylinders used in:

• Industrial Gas Storage: For gases such as oxygen, nitrogen, and other compressed gases used in manufacturing processes.
• Medical Gas Delivery Systems: Lightweight and safe cylinders for hospital and emergency medical use.
• Transport and Logistics: Gas cylinders used in transportation requiring proven mechanical and pressure resistance.
• Energy Sector: Storage solutions for compressed natural gas (CNG) and hydrogen fuel applications.
• Firefighting and Safety Equipment: High-performance composite cylinders used in breathing apparatus and rescue systems.

Adopting this standard helps ensure that composite cylinders meet international safety criteria, reducing the risk of cylinder failures, protecting end users, and improving environmental sustainability through durable designs.

Related Standards

For comprehensive compliance in gas cylinder design, manufacturing, and testing, ISO 11119-2:2020/Amd 1:2023 should be considered alongside the following related standards:

• ISO 11119-1: Design, construction, and testing of refillable composite gas cylinders with non-load-sharing liners.
• ISO 11623: Specifications for fully wrapped composite cylinders with non-metallic liners.
• ISO 9809: Steel gas cylinders design and construction standards.
• ISO 2903: Gas cylinder valve specifications.
• ISO/IEC Directives, Part 1 and Part 2: Frameworks governing the development and editorial rules of ISO standards.

By aligning manufacturing and testing programs with these harmonized standards, organizations can achieve robust quality management and foster global interoperability in gas cylinder technologies.

Keywords: ISO 11119-2, composite gas cylinders, fibre reinforced cylinders, load-sharing metal liners, gas cylinder testing, pressurization cycles, refillable gas cylinders, gas storage safety, cylinder design standards, industrial gas storage, medical gas cylinders, lightweight gas cylinders