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4.3 Non-Chemical Hazara <br /> The following table provides a checklist that is useful in identifying specific non- <br /> chemical hazards for the job tasks described in Section 3.2: <br /> TABLE 4-3 <br /> NON-CHEMICAL HAZARDS <br /> NO YES WHICH TASKS? <br /> Electrical hazard <br /> Overhead power lines X 3 <br /> Underground cable/power lines X <br /> Gas lines/Water lines X <br /> Equipment hazards <br /> Drilling X 3 <br /> Excavation X <br /> Machinery X 3 <br /> Heat exposure X 2, 3 <br /> Cold exposure X <br /> Oxygen deficiency X <br /> Confined spaces X <br /> Noise X 3 <br /> Ionizing X <br /> Non-ionizing radiation X 3 <br /> Lasers X <br /> Infrared X <br /> Ultraviolet X 2, 3 - suggest sunscreen <br /> if sunlight exposure is <br /> extensive. <br /> Fire X <br /> Safety <br /> Holes/ditches X 3 <br /> Steep grades/Uneven terrain X 3 <br /> Slippery surfaces X <br /> Unstable surfaces X <br /> Elevated work surfaces X <br /> Explosive Atmosphere X <br /> Shoring/Scaffolding X <br /> Other: <br /> 15 <br />