FLAMMABLE & COMBUSTIBLE LIQUID STORAGE

While the dangers of flammable liquids are well known, combustible liquids can be as dangerous under certain conditions.

The vapour space in storage tanks is a Zone 0 are even for combustible liquids.

Should the ambient temperature approach the flash point of combustible liquid within 6 deg C, it has to be treated as if it were a flammable liquid.

AS/NZS 60079.10.1 includes classifications for flammable and combustible liquid storage.

AS 1940 requirements must also be met.

Vents from such vessels are sources of release, as are drains and vents (and sample points), as are flange and screwed joints.

Mists can form from small leaks under high pressures. These are treated in the same manner as vapours.