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Understanding CTP Process Drift: Operator Comparisons and Stabilization Techniques

This paper explores the concept of process drift by analyzing a specific CTP (Critical-to-Process) measure assessed by multiple operators over a consistent time frame across several days. It highlights variations in measurements taken by different operators on the same day, as well as the same operator on different days. The findings underscore the importance of recognizing process drift as an indicator of how well a process is aligned with its targets. Recommendations for stabilizing the process through corrective actions and standard operating procedures are also discussed.

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Understanding CTP Process Drift: Operator Comparisons and Stabilization Techniques

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  1. PROCESS DRIFT AN EXAMPLE OF SUBSTANCE OF PAPER AS CTP

  2. Process CTP Measured by Operator A Over a Period of Time – Day 1

  3. The Same CTP Measured By Operator B Over Same Time – Day 1

  4. The Same CTP Measured By Operator C Over Same Period Of Time the Same Day

  5. Same CTP Measured By Operator A on the 2nd Day Over The Same Period Of Time

  6. The Same CTP Measured on 2nd Day By Operator B Over Same Time

  7. The Same CTP Measured Over The Same Period Of Time on 2nd Day

  8. The Same CTP Measured By Operator A on the 3rd Day

  9. CTP Measured By Operator B the 3rd Day

  10. CTP Measured By Operator C on the 3rd Day Over Same Time

  11. OVERALL PROCESS

  12. OVERALL PROCESS

  13. CONCLUSIONS • One can look at the Process Variation • over a same period of time on the same day by different operators. • by the same operator at different periods of time on different days. • This is called Process Drift, which can provide an approximate estimate of how well the process is centered towards its target. • One can stabilize the process by taking corrective actions for special cause variations visiting the process by process standardization & standard operating procedures.

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