GlossaryEN1 min readUpdated: Jun 23, 2026

Compressed Gas Transport

Whenever compressed gases – substances stored in containers at pressures significantly above atmospheric level – enter the transport chain, a tightly regulated dangerous goods regime applies.

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Last updated: 23 June 2026Published: 19 June 2025

Source: https://en.wikipedia.org/wiki/Compressed_gas

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Definition & Explanation

Whenever compressed gases – substances stored in containers at pressures significantly above atmospheric level – enter the transport chain, a tightly regulated dangerous goods regime applies. Only approved pressure vessels are permitted: steel cylinders, composite bottles, or tanker vehicles fitted with certified valve and closure systems that must pass periodic re-qualification testing. The regulatory framework is mode-specific: road and rail fall under ADR and RID respectively, air freight under the IATA Dangerous Goods Regulations, and sea transport under the IMDG Code. Gas classification – flammable, toxic, asphyxiant, or oxidising – drives the entire compliance chain, determining the UN number, hazard labels, segregation requirements, and emergency response procedures. Drivers must hold valid dangerous goods training certificates, and the transport document – a dangerous goods declaration or shipper's declaration for air freight – must accompany the consignment throughout.