![]() ![]() I was in a place where you are currently, trying to use Primavera and MS Project for Maintenance Planning. And since there seems to be agreement that MSP is not sufficiently robust for outage management, I guess that leaves Spider. To my knowledge, the only two software packages that compute Drag are Spider and the Sumatra Project Optimizer add-on to MS Project. With a Drag Cost on, for example, a nuclear plant refueling shutdown of over $1 million per day, Drag computation allows optimizing of both planned and actual (ABCP) schedules to optimize the template up front, and to identify useful adjustments when and if the CP changes during the shutdown. On shutdowns, where the process is usually one of optimization of a templated process over periodic iterations, Critical Path Drag computation is of huge value, allowing targeting of specific CP activities for crashing and/or fast tracking. Even here, Critical Path Drag (and Drag Cost) computation can be of great help. This should always be an important process, but it's often overlooked (or performed in half-assed fashion) on one-time projects. ![]() There is one further issue on shutdowns: the process of compressing and optimizing the schedule.
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