prEN 14638-3

Overview

prEN 14638-3 is a European standard developed by CEN that specifies requirements for transportable gas cylinders. This part of the standard focuses on refillable welded receptacles made from carbon steel with a maximum capacity of 150 litres. The design of these cylinders is rigorously justified through finite element analysis and/or experimental methods, ensuring safety, durability, and performance under operational conditions.

The standard is essential for manufacturers, regulators, and users of transportable gas cylinders, providing a clear framework for the design and production of welded carbon steel cylinders used to store and transport gases safely.

Key Topics

• Transportable Gas Cylinders: The standard applies specifically to cylinders that are designed for mobility and refillability, addressing critical structural and safety aspects.
• Refillable Welded Receptacles: It covers welded cylinders capable of being refilled multiple times, emphasizing weld integrity and material robustness.
• Maximum Capacity Limit: Cylinders covered under this standard have a capacity not exceeding 150 litres, which is a common size for many industrial and medical gas applications.
• Material Specification: Cylinders must be constructed from carbon steel, chosen for its strength and weldability.
• Design Validation: Cylinder designs require justification through finite element analysis or experimental testing, ensuring that they meet strict safety and operational criteria.
• Safety and Compliance: The standard protects end-users by ensuring cylinders are manufactured to withstand pressure, handling stresses, and environmental factors without failure.

Applications

• Industrial Gas Storage: Used widely in manufacturing, welding, and chemical processes where gases like oxygen, nitrogen, or argon are stored and transported.
• Medical Gas Supply: Carbon steel cylinders compliant with this standard can be used to store medical gases in hospitals or emergency settings.
• Commercial and Laboratory Use: Suitable for laboratories and commercial enterprises that require reliable, transportable gas cylinders for various applications.
• Safe Transport: Compliance ensures cylinders meet safety standards for transportation by road, rail, or air, reducing risks during handling and transit.
• Refill Stations: Supports infrastructure for gas refilling and reuse, promoting environmental sustainability and cost-efficiency.

Related Standards

• EN 1785 - Transportable gas cylinders for high-pressure gases
• EN 12245 - Seamless steel cylinders for gases
• ISO 9809 - Gas cylinders-Refillable seamless steel gas cylinders-Design, construction and testing
• EN 13445 - Unfired pressure vessels applicable for gas cylinders manufacturing
• ADR - European Agreement concerning the International Carriage of Dangerous Goods by Road, regulating transport safety

Summary

prEN 14638-3 provides a robust framework for producing safe, reliable, and efficient refillable welded carbon steel gas cylinders up to 150 litres. By requiring design justification through finite element and experimental methods, this standard ensures that cylinders meet high safety and performance levels, benefiting industries and end-users alike. Compliance supports safer handling, transportation, and reuse of gas cylinders, aligning with international safety regulations and contributing to sustainable industrial practices.