Originally posted by AllenLee:
Could anybody tell me whether we need to conduct SPC control chart to control all of the Special Characteristics?
Nowhere in QS-9000 is a requirements to use SPC charts. What is required is that a company review the need for statistical techniques during the
APQP process (4.20).
I think there is an ever declining view that SPC and statistics are synonimous, they are not. SPC is a specific set of techniques, statistics cover a much larger scale.
Most of us have graphs and charts as part on management review. They are not SPC charts, but they are statistical charts as they contain numbers, trends, actions required etc...
On a more personal level, I believe all special characteristics need some type of control methodology that is determined during the preparation of the
FMEA and control plans. They do not have to be SPC, but SPC charts work well in identifying and verifying the process.
ASD...
[This message has been edited by Al Dyer (edited 03 August 2001).]