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C. Operations which cannot be preformed with the guard in place must be C. Below is a list of do's and don'ts when welding and cutting. performed on a machine better suited for the operation. (1). Do keep gas cylinders away from heat,sparks,and flame. D. Floor pedals should be constructed so that they may not be accidentally (2). Do not attempt to mix gases in a cylinder. This should be done by the activated. supplier. E. All power driven machines should have the capability of being locked out (3). Do not attempt to fill cylinders yourself. so that the machine cannot be accidentally activated when service is (4). Do not use worn welding cables. being performed. (4). Do not use worn welding cables. F. The stop switch should be located where the operator can reach it while (5). Do not use gas pipes or electrical conduits as a ground for welding. operating the machine.Some machines should also have a brake to stop (6). Do not weld while standing in water. the machine's motion after the power has been turned off. D. When you have finished welding or cutting for the day: 6. Grinders (1). Shut off the valve at the tank. A. When operating any type of grinder,wear eye protection or a face shield. (2). Bleed the gas from the regulator and hoses. B. Before operating the grinder,make a visual inspection of the grinder for: (3). Coil hoses or cables carefully to prevent damage. (1). Cracked or chipped abrasive wheels. (4). Cleanup work areas. (2). Excessive or uneven wear.(Dressing the wheel may correct these problems if not too severe.) (3). Frayed cords. Personal Protective Equipment (4). Broken housings. C. Bench grinders must have a rest and a shield.The rest should be within 1. Eyes 118"of the grinding wheel. A. Protection should be worn if there is a chance that projectiles hazardous D. Never grind on the side of the grinding wheel. liquids,or other foreign matter can enter the eye. E. Do not use excessive pressure on the grinding wheel. B. Protection should match the hazard. F. Do not attempt to stop the grinding wheel with your hand. C. Hardened,shatterproof lenses should be worn when there is a chance 7. Cutting and Welding. that projectiles could enter the eye. Side shields should also be worn in A. All personnel performing welding activities should receive training and be these circumstances. certified by the supervisor. D. Splash goggles should be worn when working with hazardous liquid B. Before you begin welding or cutting you should do a visual inspection of materials. If an explosion or sudden release of energy is possible,then the inspection of the equipment you are to use.Below is a list of items for shatterproof lenses should be part of the protection. you to check. E. When working with equipment which produces ultraviolet radiation(UV), (1). Inspect compressed gas cylinders for any signs fatigue or abuse eyewear should be worn designed to filter out the UV radiation. which may cause the cylinders to be unsafe.Look for leaks around the F. Welder's glasses with tinting appropriate for the hazard should be worn neck and valve,inspect the threads,and look for and inspection date. during welding operations. (2). Open valve slowly to protect the regulator. G. Where there is a possibility that hazardous chemicals can be splashed (3). Open the slowly 1'/2 turns to allow quick closing. into one's eyes,contact lenses should not worn. (4). Inspect fuel and oxygen hoses each day.Look for: 2. Face (a). Cracks A. Full-face protection should be provided when hazardous liquid chemicals (b). Melted surface. are used,especially when there is a risk of explosion or high-energy (c). Contrast in color.(May indicate weak nose wall) chemical reactions. (5). Parallel sections of oxygen and fuel hoses should not be taped B. Protection should extend to cover the neck when projectiles or explosion together more than 4 inches of every 12 inches. could result. (6). Inspect the torch for. C. Where explosion are possible,shatterproof eyewear should be worn in (a). Leaking shutoff valve. addition to (b). Hose couplings. the full-face protection. (c). Tip connection. 3. Head (7). Remove all flammables from the area. A. Hard hats should be worn when there is a risk of materials falling from (8). Ensure adequate ventilation. above.