15 Shop Safety • Keep a firm grip on portable power tools. • When possible, secure work pieces with a clamp or vise. • Keep bystanders away from moving machinery. • Store tools in a manner that prevents them from being damaged. Laser Safety Class 3B and 4 lasers emit amplified visible and non-visible light radiation and may cause immediate harm to eyes and skin. All users of Class 3B and 4 lasers must be pre-approved by the Laser Safety Officer and must adhere to the safety requirements outlined in the Laser Safety Manual. Refer to Laser Safety web page for more information. Lockout/Tagout (LOTO) Lockout/tagout (LOTO) procedures are required when unexpected energization of equipment duringmaintenance or service could cause injury. LOTO procedures are described in the ISU Lockout/Tagout Manual and must be performed by trained personnel authorized to perform maintenance or service on powered equipment. LOTO procedures are not required for work on equipment that can be unplugged and controlled from the power source. Machine Guarding Moving machine parts must be safeguarded to protect operators from injury. Belts, gears, shafts, fly wheels, chains, and other moving parts must be guarded to prevent contact with the operator. Guards must prevent individuals from coming into contact with the hazard, without creating additional hazards, or preventing the individual from performing routine tasks. If at any point a guard needs be removed, LOTO procedures must be followed and the guard replaced after performing the required task/maintenance. Noise As many pieces of shop equipment produce sound levels that can be damaging to hearing, hearing protection may be required during use. The shop supervisor must ensure that noise hazard areas or equipment requiring hearing protection have signs or are labeled. Refer to the ISU Hearing Conservation Manual for more information. Respiratory Hazards Fabrication, finishing, or painting operations may produce hazardous levels of airborne dust, particulates, or vapors. Engineering controls such as ventilation hoods or snorkels may be in place to mitigate these hazards. However, if these controls are not feasible, respirator If you notice that a guard is missing or damaged, contact the shop supervisor.