six big losses

**Six Big Losses** is **the classic TPM loss categories covering downtime, speed, and quality-related productivity erosion** - They provide a standardized framework for OEE loss analysis. **What Is Six Big Losses?** - **Definition**: the classic TPM loss categories covering downtime, speed, and quality-related productivity erosion. - **Core Mechanism**: Losses are grouped into breakdowns, setup/adjustment, minor stops, speed loss, startup rejects, and production rejects. - **Operational Scope**: It is applied in manufacturing-operations workflows to improve flow efficiency, waste reduction, and long-term performance outcomes. - **Failure Modes**: Incomplete loss capture weakens prioritization and improvement focus. **Why Six Big Losses Matters** - **Outcome Quality**: Better methods improve decision reliability, efficiency, and measurable impact. - **Risk Management**: Structured controls reduce instability, bias loops, and hidden failure modes. - **Operational Efficiency**: Well-calibrated methods lower rework and accelerate learning cycles. - **Strategic Alignment**: Clear metrics connect technical actions to business and sustainability goals. - **Scalable Deployment**: Robust approaches transfer effectively across domains and operating conditions. **How It Is Used in Practice** - **Method Selection**: Choose approaches by bottleneck impact, implementation effort, and throughput gains. - **Calibration**: Map every production event to one of the six categories with audit checks. - **Validation**: Track throughput, WIP, cycle time, lead time, and objective metrics through recurring controlled evaluations. Six Big Losses is **a high-impact method for resilient manufacturing-operations execution** - They anchor structured loss-elimination programs in manufacturing.