The Research On Schedule Management Optimization Of Overhaul Project In Heng Yi Plant

The overhaul of thermal power generating units is huge and complex project. The constitution of the task is complex and it requires a lot of manpower, material and financial resources. Without considering the factor of resource constraint and human behavior, most of the power plants at present still following traditional methods at overhaul project schedule management that causes the wastage of time and resources in overhaul, so then that produce great influences for enterprise on achieving profit targets. Facing the increasingly fierce competition, it’s an urgent and realistic problem for each power plant to figure out how to reduce the cost and shorten the construction period without sacrificing the quality.In this paper, the author takes participating in the implementation of the overhaul of#1generating units in HengYi plant as an example. Aiming at the problems emerged out during the project schedule management of#1generating units overhaul——like overlong program duration, unscientific configuration of resources or less thinking of human factor and so on。 Analyzing the defects of traditional method of project schedule management, the author present the critical chain method as a new project management way to execute overhaul schedule optimization strategy. Through the restriction theory, finding out that the restriction factor is of the limitation of the lifting devices and the human resource. Applying the critical chain method to lay down a reasonable working table with schedule estimation of50%achieving probability and release the safety time within every procedure to build buffer area, absorb critical chain and non critical chain uncertainty to resolve resource conflict, draw up a fifty days optimal schedule, and further compress one day through schedule optimization, and finally the author thereby made the overhaul period shortened by11days comparing with the sixty days of the traditional method of project schedule management.In this paper, critical chain buffer management method was firstly introduced in the unit overhaul of progress control. Comparing with the traditional control method, it’s more helpful to overhaul management to think as a whole as to execute effective process control. By monitoring the buffer Consumption, accurately judging the project schedule and selecting of reasonable time to take effective measures to pursue progress, it has improved efficiency and reduced cost, as then it made the enterprise seizing the initiative in the fierce competition in the market.There are some practical reference value and academic significance in the thesis for researching the way of project management during the overhaul, on which reasonably allocating resource、 eliminating uncertainty factor, effectively controlling process as to ensure the overhaul project finish on time and successful accomplishment of all kinds of targets. It can provide the basis for the realization of the method of critical chain project management in the similar enterprises’ management.