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Sa Morita BroEhers Service Stadion 13 Msscb 7, 1992 L L M f - Cold Stress LCold stress is a particular concern when field activities are performed while the air temperatures at the site are below 40°F. If winds are blowing at S mph or grater Land/or the weather is damp or wet, cold stress is even more of a potential hazard. Donning of appropriate clothing, having warm shelter readily available, carefully scheduling work and rest periods, and monitoring workers` physical conditions are precautions that will be taken to prevent cold stress. Cold injury (frostbite and hypothermia) may occur if cold stress is not prevented. As a preventive measure, the body core temperature must not drop below 96.8°F. Pain in the extremities is the first early sign of cold stress. Severe shivering sets in when the body core temperature drops below 95"F. If this occurs, work will stop immediately and the affected worker(s) will take a warming break of sufficient duration that the signs and symptoms of cold stress go away. L ,Noise Heavy equipment, such as drilling rigs and excavators, may produce loud noise. The effects of noise can include, but may not be limited to: • Physical damage to the ear, pain, and temporary and./or permanent hearing loss. L • Communication interference that may increase potential hazards due to the inability to warn of dangers and the proper safety precautions to be taken. OSHA regulation 29 CFR Part 1910.95 describes an effective hearing conservation program that must be administered whenever noise exposures equal or exceed an 8- hour, time-weighted average sound level of 85 dBA (decibels on the A-weighted scale). In addition, if workers are subjected to noise exceeding an 8-hour, time- weighted average sound level of 90 dBA, feasible administrative or engineering controls must be utilized. L L i EB-8101-1 9203-E016.WP