The impact on how hazards are recognized and assessed and how exposure is managed and how exposure is dangerous teaches that anything that enters the body has the potential to be harmful at a level deemed excessive. IH has a great influence on the control methods used from the design phase of a plant, factory or work area during the engineering phase to the training and administrative phase up to the correct use of protective devices, all done to create a safe working environment (Plog, 1988 ) in order of