24.1 Where practicable, electrical equipment shall
not be installed in a space where petroleum vapour or other hydrocarbon
gas may accumulate. When equipment is installed in such a space it
shall comply with a recognised standard for prevention of ignition
of flammable atmosphere.
24.2 Any compartment which contains a gas consuming
appliance or any compartment into which flammable gas may leak or
accumulate, shall be provided with a hydrocarbon gas detector and
alarm. The detector and alarm shall be designed to comply with a
recognised standard for prevention of ignition of flammable atmosphere.