It is true that this improvement can increase the security degree during start-up shutdown procedure, decrease the pollution to the environment, prevent operation construction accident from occurring and meet the demands of HSE management system. 这些改进能够提高开停工过程的安全性,减轻对环境的污染,可以避免开停工过程中生产操作事故和施工作业事故的发生,完全适应安全、健康与环境(HSE)管理要求。