This legislation has been repealed.
Where a bulk container
for the storage of liquid cyanides is connected to a processing plant,
manufacturing plant or some other consuming device —
Chief Inspector may, where he considers necessary, require that the design of
the delivery system to the plant incorporate a line pressure drop cut-out
switch to shut down the pump if a sustained low discharge pressure is
non-return valve shall be fitted in the discharge line to prevent any other
liquids from entering the container.