for Reasons locating processes close are far way from each other: Cleaning & Deburing with the Rotary shot blast may will create a lot of noise, and may also produce metallic dust. o Noise would result in hearing protection for all the workers in the proximity. Even with hearing protection, the annual dose of noise must be evaluated. o Metallic dust: Health hazard. Dust can: o Build up in lungs and irritate them, it may also be a carcinogenic, or be absorbed into the blood stream. o Get into all crevasse and wrinkles causing skin problems o Irritate eyes and cause long term eye damage from the presence of abrasive particles o Build up in sinuses and cause sinus problems The people working in the shot blast area will wear "space suits" so they can be breathing in clean air. http://www.globalsecurity.org/wmd/library/policy/army/fm/34/Fig1-3.gif http://www.defence.gov.au/defencemagazine/editions/200702/phot os/dsto5.jpg This level of personal protective equipment is inappropriate for the entire plant
Damage to machinery. Metallic dust can build up on electrical and electronic components. o Switches and relays can short-circuit o Switching mechanics and relay mechanisms can fail due to internal abrasion o Commutators on DC motors
o http://upload.wikimedia.org/wikipedia/commons/e/e0/Kom mutator_animiert.gif o Printed circuit board (controlling automated machinery) can mal-function requiring erratic operation and eventually complete failure of the electronic components o Electronic cooling fans get metallic dust in their bearings. Metallic dust damage precision machinery. o Metal Lathe carriage: o http://en.wikipedia.org/wiki/File:HwacheonCentreLathecarriage-mask_legend.jpg Metal Lathe tail stock: http://en.wikipedia.org/wiki/File:HwacheonCentreLathetailstock-mask_legend.jpg o Milling Machine: http://en.wikipedia.org/wiki/File:Makino-S33MachiningCenter-example.jpg Damage paint quality o Dust speckles make rough paint finish
Paint Booth location: o Explosive fumes created by paint or thinners used in paint, or cleaners used to remove grease from parts before painting. Not close to any machinery that produces sparks o Fumes created by Paint booth my irritate other workers o Traffic in area of paint booth can stir up dust o Man door or truck doors close to paint booth if opened, can disturb the flow of air around the booth Doors open can change the temperature around the paint booth, slowing down the cure time or making the paint not flow correctly on the parts. Metal cutting machines (band saw, lathe, milling machine, drill) o Coolant/lubricant ...