bottleneck analysis

**Bottleneck analysis** is the **identification and quantification of the process step that limits total system throughput** - it ensures improvement efforts focus on the true constraint instead of optimizing non-limiting operations. **What Is Bottleneck analysis?** - **Definition**: Analytical method to locate the resource with highest sustained utilization and queue pressure. - **Indicators**: Persistent upstream queue, high overtime at one tool group, and starvation downstream. - **Scope**: Can be applied at workstation, module, line, or full value-stream level. - **Output**: Constraint map, throughput impact estimate, and prioritized improvement plan. **Why Bottleneck analysis Matters** - **Maximum Leverage**: Improving the bottleneck yields direct gains in overall output. - **Waste Avoidance**: Improving non-bottleneck assets often creates more WIP, not more throughput. - **Investment Accuracy**: Capital and engineering effort can be directed to highest system return. - **Schedule Reliability**: Constraint stability improves delivery predictability across product mix. - **Continuous Focus**: As constraints shift, regular analysis keeps optimization aligned with reality. **How It Is Used in Practice** - **Flow Data Review**: Analyze utilization, queue time, and effective capacity by process step. - **Constraint Validation**: Confirm candidate bottleneck through line observation and what-if simulation. - **Action Sequence**: Exploit, protect, and elevate the bottleneck before expanding non-constraints. Bottleneck analysis is **the discipline that aligns improvement work with system physics** - output grows fastest when teams solve the true throughput limiter first.