Defines safety colours, safety signs and other warning indications which will aid in prevention of accidents, indication of health hazards, and location and identification of first aid and fire-fighting equipment. Defines meaning and application of colours and other indications which are recommended for identification of pipes conveying fluids in liquid or gaseous conditions; and identification of conduit and ducting enclosing electric services. Makes provision for identification of contents of industrial gas cylinders. Approved electrical safety Standard.