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石油化工企业主要是针对石油进行炼制和以石油、天然气为原料生产化工产品的企业~([1])。由于石油化工企业的原辅材料、产品和副产品大多为易燃、易爆,并易引起中毒的化学毒物,因此其生产装置大多采用露天布置,并实行机械化、自动化和连续化生产。鉴于石油化工企业的生产特点,作业人员多数只需在装置现场进行巡检作业,大多实行倒班制。与其他行
Petrochemical enterprises are mainly aimed at oil refining and oil and natural gas as raw materials to produce chemical products company ~ ([1]). Since most of the raw and auxiliary materials, products and by-products of petrochemical enterprises are chemical poisons that are flammable, explosive and apt to cause poisoning, most of their production facilities are arranged in the open air and mechanized, automated and continuous production. In view of the production characteristics of petrochemical enterprises, the majority of operators only need to carry out inspection operations on the installation site, most of them practicing the shift system. With other lines