Compressed Gas Cylinder Storage

Hazard picture

Compressed gas cylinders carry a dual hazard: the contents themselves – flammable, oxidising, toxic or asphyxiating – and the mechanical energy stored in the compressed gas, which can be released instantly as a projectile or rocketing cylinder if the valve or shell is damaged. Where flammable and oxidising gases are stored together, even a small leak can create an explosive atmosphere.

Protection measures

Cylinders should be stored upright and secured against falling, fitted with valve protection caps when not in use, and segregated by gas group with adequate separation distance or physical partitioning between flammable and oxidising gases. Storage areas for flammable gases require a hazardous area classification with correspondingly rated electrical equipment and effective ventilation, since many gases are heavier or lighter than air and can accumulate at floor or ceiling level.

Insurance relevance

Because a cylinder failure can trigger both an immediate explosion and widespread contamination or a major fire, risk engineers pay particular attention during surveys to correct segregation of gas groups, protection against mechanical damage, and clear marking of empty and full cylinders. Missing segregation is treated as a clear warning sign of an inadequately managed hazardous materials risk.