27.29.22 Cylinder storage areas should not be permitted to become untidy or unclean. Ensure combustible matter is removed. 27.29.23 Cylinders exposed to a fire may explode and staff should not attempt to extinguish such a fire. Their action should be limited to extinguishing minor fires before they reach this stage. Do not allow dirt or foreign matter to enter seatings and threads of cylinder valves.
Clean fittings enable gas tight joints to be made and protect the mechanism of reducing valves.
Before attaching a regulator or other fitting to a cylinder valve, remove the seal and clear outlet by momentarily opening the cylinder valve. Do not test for leakage with a flame. Always use soapy water when testing valve sockets for leakage, and clean thoroughly on completion. 27.29.27 Cylinder valves must not be opened too quickly especially when connected to a manifold fitted with pressure reducing regulators. Valves must always be opened slowly and in their correct sequence.