Quality Mgt

Process Improvement Methodology
-Management responsibility
-dev process improvement plan
-determine process or area to examine
-Form and train Process/Quality Improvement team (need representation)
Team: use coarse tool
-Process flowchart (2 version, as it, & should be)
-check sheets and histogram
-Pareto analysis <-- (iterative)
-Fishbone chart --> steps)
Team: use fine tools
- Process control charts
- Run diagram
- scatter diagram
- failsafing
Team
-Determine process change
- Implement pilot process improvement
- Measure and evaluate results
-Repeat if result unsastisfactory; deploy full implementation if result satisfactory

PDCA or (PDSA) cycle
*also known as the Deming wheel, or deming/shewhart cycle or wheel
-4parts to the cycle
-Plan: document and analyze
-Do: implement "improvement"
-Check (or study): compare desire state
-Act: correct or standardized

Six Sigma

Started as a simple metric by Bill Smith working at Motorolla
Migrated to Allied signal (Honeywell)
Picked up by General Elecric
-Commitment by CEO Jack Welch in 1995

move from 3sigma to 6 sigma
1a = 32%
2a = 4.5%
3a = 0.3%
6a = 0.00034%

Defect- any mistake or error passed on to the customer
- general view any variation from specification
DPU (defect per unit)
- number of defect per unit of work
- ex: 3 lost bag/8000 customer = 0.000375

Statistics - Off-centering
Represents a shift in the process mean
Impossible to always keep the process mean the same time (this Would be perfection)
Does Not represent a change in specification
Control of shift within +-1.5 sigma of the targetr to keeps defect to a maximum of 3.4 per mil