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工伤事故源于生产现场人和物两个方面的隐患,如人流和物流中的隐患未能消除,两个流动线路轨迹相交叉的“点”就是发生事故的“时空”。人流中的隐患(即人的不安全动作或行为)、机械和物质危害是构成能量逆流中的不安全状态。如图1,左图是逻辑“或(OR)门”连接“人为失误”和“机械事故”两个事件,其中人或物的事件有一个发生,事故就会发生;右图是逻辑“与(AND)门”连接“人为失误”和“安全装置故障”两事件,只有两事件同时发生,才能发生。
Work-related accidents originate from the hidden dangers of people and objects on the production site. For example, hidden faults in people flow and logistics can not be eliminated. The “point” where two mobile lines intersect is the “space-time” of the accident. Human potential hazards (ie, human unsafe actions or behaviors), mechanical and material hazards constitute an unsafe condition in the energy countercurrent. As shown in Figure 1, the left picture shows the logical OR of the two events “human error” and “mechanical accident”, in which one of the events happened to the person or object and the accident will happen; (AND) Doors “to connect” human error “and” safety device failure "two events, only two events occur at the same time, to happen.