In May 2017, Logitech Engineering assisted
MHO Infrastructure to certify a new
Stem Cutter machine for Pacific Aluminium
at the Boyne Island Smelter (BSL) to satisfy AS:4024 Category III machine safety compliance. By combining guarding
with proximity sensors and redundancy, the machine is now much safer to operate. A comprehensive risk assessment
and compliance test was conducted for every conceivable operating condition and failure mode.
Trapped Key Safety Interlocks are virtually fool-proof in preventing incorrect switching of electrical equipment, and controlling access to unsafe areas. Logitech Engineering can design Key Exchange systems and conduct a comprehensive risk assessment to suit any application. We have recently commissioned a smart loading bay lockout system which prevents trucks from moving while loading operations are in progress.
When working on any piece of electrical equipment, the objective is to always maintain two air-gaps.
Mechanically interlocked Earth Switches for MCCs are used when a feeder cell needs to be removed to access
out-going terminations, or to provide additional safety for workers by Earthing the feeder cables connected to downstream equipment.
High Voltage switching programs are mandatory for any HV switching task, but should always be supplemented by mechanical and electrical interlocking in cases of fault or switching errors.