A Buffered-State Front Line Approach in Multi-tier Supplier Collaborative Project Controlling

Abstract Buffers of critical chain method have been used in multi-tier supplier collaborative project for a time. But there is still no good way to connect these buffers with current task execution information to better balance the resource using with time using. A new project deviation identification method called buffered state front line (Buffered-SFL) synthesized both the advantage state front line and the critical chain buffer. Buffered-SFL method synthesized both the advantage state front line and the critical chain buffer. By adapting the state front line, resource using and buffer corrosion can be observed on a single graph. The situations of buffer using, scenario descriptions in Buffered-SFL applications and complete effecting scope analysis for project planning delay and rescheduling are discussed in detail. This method helps to reduce the negative effects in general deviation correcting methods and make better decisions according to the deviation analysis.