Process Analysis

Process Analysis

1. Process Analysis Techniques

   • Qualitative analysis
     • 1.1.Purposes of Qualitative Analysis
       • A)Identify and eliminate waste
         • Valued-added analysis
           • A. Value-Added Analysis
             • Decorticate the process into steps
               • Classify each step into:
                 • Value-adding (VA): Produces value or satisfaction to the customer.
                 • Business value-adding (BVA): Necessary or useful for the business to run smoothly, or required due to the regulatory environment, e.g. checks, controls
                   • Non-value-adding (NVA) – everything else including handovers, delays and rework
             • B. Issue Register
               • Purpose: to categorise identified issues as part of as-is process modelling
                 • Usually a table with the following columns (possibly others): issue number name Description/explanation Impact: Qualitative vs. Quantitative Possible solution
               • Techniques for issue analysis
                 • Cause-effect diagrams Why-why diagrams Pareto charts
                   • pateto charts: Useful to prioritize a collection of issues or factors behind an issue
         • 7+1 Sources of Waste
           • Unnecessary Transportation (send, receive)
             • Inventory (large work-in-process)
               • Motion (drop-off, pick-up, go to)
                 • Waiting (waiting time between tasks)
                   • Over-Processing (performing what is not yet needed or might not be needed)
                     • Over-Production (unnecessary cases)
                       • Defects (rework to fix defects)
                         • Resource underutilization (idle resources)
       • B)Identify, understand and prioritize issues
         • Issue register
           • Root-cause analysis (e.g. cause-effect diagrams)
             • Pareto analysis

2. Quantitative Analysis

   • Quantitative Flow Analysis Queuing Theory Process Simulation