Method of scheduling that considers limitation resources when creating project schedule and buffers to protect project completion date
The method of scheduling that considers limited resources and buffers to protect project completion date is called Critical Chain Project Scheduling (CCPS).
In CCPS, the project schedule is created by identifying the critical chain, which is the longest sequence of tasks that determines the project duration. Unlike traditional project scheduling methods that focus on task dependencies and estimates, CCPS considers the availability of limited resources and buffers.
Limited resources include people, equipment, and materials that are essential for completing project tasks. These resources may not be available in unlimited quantities, and their constraints can impact the project schedule. CCPS takes into account resource availability and allocates them optimally to maximize the project efficiency.
Buffers are added to protect the project completion date from uncertainties, delays, and variations in task durations. CCPS incorporates two types of buffers: project buffer and feeding buffers.
- Project Buffer: It is placed at the end of the critical chain to protect the project completion date. The size of the buffer is determined based on the level of uncertainty and typically derived from statistical analysis. Project buffers absorb any delays that may occur within the critical chain, ensuring that the project is on track to finish as planned.
- Feeding Buffers: These buffers are placed at the interfaces between non-critical chain tasks and the critical chain tasks. They safeguard the critical chain from resource constraints and variations in task durations in non-critical paths. Feeding buffers help ensure a smooth flow of work towards the critical chain, reducing the chances of delays and bottlenecks.
By considering limited resources and incorporating buffers, CCPS provides a realistic and robust project schedule that minimizes the risk of delays and maximizes project efficiency. It improves resource utilization, enables better resource allocation, and protects the project completion date, enhancing overall project success.