乌兰浩特城市燃气管道工程投产试运行方案乌兰浩特城市燃气管道工程置换投产试运行方案中油新兴能源产业集团有限公司乌兰浩特分公司二○○六年十一月Page1of37乌兰浩特城市燃气管道工程投产试运行方案目录1编制目的及依据................................................42乌兰浩特市燃气管道工程概况.....................................53投产范围.......................................................73.1线路部分.......................................................................................................................................73.2场站部分.......................................................................................................................................73.3阀井部分.......................................................................................................................................74投产总原则.....................................................84.1投产关键问题...............................................................................................................................84.2投产程序.......................................................................................................................................84.3注氮点的选择...............................................................................................................................84.4注氮量的确定...............................................................................................................................85组织机构及职责范围............................................105.1组织机构图.................................................................................................................................105.2各组人员及职责.........................................................................................................................106注氮及封存....................................................146.1注氮作业前准备工作.................................................................................................................146.2注氮作业要求及注意事项.........................................................................................................146.3注氮作业计划.............................................................................................................................156.4乌市CNG释放站注氮操作步骤...................................................................................................157置换升压......................................................187.1置换升压前的技术准备工作.....................................................................................................187.2置换升压期间乌兰浩特市城市燃气管道天然气进气量.........................................................187.3放空点确定.................................................................................................................................187.4氮气混气头到达各场站、阀室的预测时间表...........................................................................197.5气体界面检测方法.....................................................................................................................207.6场站、阀室置换操作步骤.........................................................................................................187.7升压与检漏...................................................................
