abhishreshthaa
Abhijeet S
BOTTLENECKS OF SIX SIGMA
1. Delays in project execution: There are often significant delays in Six Sigma projects and intermediate deliveries. One of the most frequent reasons is decision-making errors that lead to rework and time-consuming data collection activities. Other reasons are listed below in relation to Six Sigma project phases.
2. Faults in Project Phases
a) Define/Identify Phases
• Poor project selection and/or problem formulation.
• Non-exhaustive list of potential directions for change and/or for innovation.
• Underestimated secondary problems which may arise during and/or as a result of primary problem solving.
• Poor definition of alternative causes and effects and screening of significant inputs.
• Failures caused by narrowing the scope of the projects in the wrong direction.
b) Measure Phase
• Time-consuming data-collection and measurements.
• Lack and/or high variability of measurement systems.
• Failure in finding root cause.
c) Improve/Design Phase
• Lack of really productive and/or innovative ideas for improvements (upgrade to 4 sigma level and higher) or lack of competitive design or redesign.
• Time and labor consuming DOE.
d) Verify/Control Phases
• Non-systematic and non-exhaustive failure prediction
• These reasons lead not only to delays, but also increase the Cost of Poor Quality (COPQ) due to rework. Repeated idea collection, endless meetings and discussions, screening the alternatives, measurements and analysis also significantly deteriorate overall acceptance and support of further deployments.
• The need for additional efficient analytical techniques and tools, which not only accelerate the above decision-making activities but also make decision-making and problem-solving activities error-prone, increase their productivity and reduce cycle time, and increase Roll Throughput Yield of innovative and competitive solutions through the whole Six Sigma process, is apparent and urgent.
1. Delays in project execution: There are often significant delays in Six Sigma projects and intermediate deliveries. One of the most frequent reasons is decision-making errors that lead to rework and time-consuming data collection activities. Other reasons are listed below in relation to Six Sigma project phases.
2. Faults in Project Phases
a) Define/Identify Phases
• Poor project selection and/or problem formulation.
• Non-exhaustive list of potential directions for change and/or for innovation.
• Underestimated secondary problems which may arise during and/or as a result of primary problem solving.
• Poor definition of alternative causes and effects and screening of significant inputs.
• Failures caused by narrowing the scope of the projects in the wrong direction.
b) Measure Phase
• Time-consuming data-collection and measurements.
• Lack and/or high variability of measurement systems.
• Failure in finding root cause.
c) Improve/Design Phase
• Lack of really productive and/or innovative ideas for improvements (upgrade to 4 sigma level and higher) or lack of competitive design or redesign.
• Time and labor consuming DOE.
d) Verify/Control Phases
• Non-systematic and non-exhaustive failure prediction
• These reasons lead not only to delays, but also increase the Cost of Poor Quality (COPQ) due to rework. Repeated idea collection, endless meetings and discussions, screening the alternatives, measurements and analysis also significantly deteriorate overall acceptance and support of further deployments.
• The need for additional efficient analytical techniques and tools, which not only accelerate the above decision-making activities but also make decision-making and problem-solving activities error-prone, increase their productivity and reduce cycle time, and increase Roll Throughput Yield of innovative and competitive solutions through the whole Six Sigma process, is apparent and urgent.