Major Gas Cylinder Leaks

A major gas leak can be caused by plant failure, or by a pipe or bursting disc rupturing.

A bursting disc is a quick pressure release system which ruptures if the pressure in the cylinder rises above a certain limit. It is designed to release the contents so that the cylinder itself does not burst.

If a bursting disc ruptures there will be a sudden loud noise and a plume of white vapour as the gas is released. Also, the cylinder may fall over.

If there is a major gas leak, take the following steps:

First:

• if you can do so without entering the cellar, turn off the gas supply

Then:

• inform all staff and evacuate the affected area

• call for assistance – dial 999 and ask for the Fire and Rescue Service

• do not let anyone go into the cellar – under any circumstances – until you are sure it is safe to do so (emergency service personnel may enter if using self-contained breathing apparatus)

• open all outside doors and windows to ventilate the area

• close all doors to passages leading to any area where carbon dioxide could accumulate

• leave the cellar refrigeration switched on – the fans will help to disperse the gas

• if a bursting disc has ruptured, the cylinder surface temperature will be below freezing – do not touch a frosted cylinder without wearing protective gloves