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UNDER THE INFLUENCE OF ALCOHOL. Sufficient intoxicating liquor in the body system to cause impairment of faculties.
UNDERWRITER. An insurance company employee who accepts or rejects risks on behalf of the insurance company. More broadly, anyone who makes insurance contracts.
UNSAFE ACT. A departure from an accepted, normal, or correct procedure or practice which has in the past actually produced injury or property damage or has the potential for producing such loss in the future; an unnecessary exposure to a hazard; or conduct reducing the degree of safety normally present. Not every unsafe act produces an injury or loss but, by definition, all unsafe acts have the potential for producing future accident injuries or losses. An unsafe act may be an act of commission (doing something which is unsafe) or an act of omission (failing to do something that should have been done).
UNSAFE CONDITION. Any physical state which deviates from that which is acceptable, normal, or correct in terms of its past production or potential future production of personal injury and/or damage to property or things; any physical state which results in a reduction in the degree of safety normally present. It should be noted that accidents are invariably preceded by unsafe acts and/or unsafe conditions. Thus, unsafe acts and/or unsafe conditions are essential to the existence or occurrence of an accident.
UPPER EXPLOSIVE LIMIT (UEL). The maximum proportion of vapor or gas in air above which propagation of flame does not occur. The upper limit of the flammable or explosive range.
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