近年来,塑料部主要化工装置创造了一系列的长周期运转新记录,非计划停车次数显著下降.3PP装置运转率从2002年的85.11%提高到2003年的97%,4PE装置从2002年的79.89%提高到2003年的91%.各装置长周期运行的实现,为塑料部产品实物量、各项技术经济指标水平的提升,以及生产成本的下降提供了有力保障. In recent years, a series of long-period operation records have been created by the major chemical plants in the plastics industry, with a significant reduction in the number of unplanned stops. The operation rate of 3PP units increased from 85.11% in 2002 to 97% in 2003, 79.89% to 91% in 2003. The realization of the long cycle operation of each unit provides a powerful guarantee for the physical quantity of plastic products, the improvement of various technical and economic indicators, and the reduction of production costs.