ADR Courses

Class 2 - Gases

Mostly carried under pressure to save space, the pressure itself creates a danger if it is release suddenly. The force contained in a high-pressure gas cylinder can amount to several hundred tonnes. If a valve gets knocked off a cylinder, the escaping gas creates a jet that makes it take off like a rocket and can lead to devastating damage.
• Most gases are heavier than air. They can cause suffocation if they displace or dilute air in confined spaces. Some gases are refrigerated down to very low temperatures to make them liquefy. The extreme cold also creates a danger.

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