YOUR TECHNOLOGY PARTNER IN:
STATISTICAL PROCESS CONTROL
This page last updated on 03 July 2006.
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ROLES WE PLAY
OUR CONSULTING TOOLBOX
OUR MODUS OPERANDI
CIP vs. INNOVATION
LEAN CONCEPTS IMPLEMENTATION
9 KNOWLEDGE AREAS
METHODS TO OPTIMIZE
5 PHASES OF CHANGE
BEHAVIORS AND BELIEVES
We use different SPC techniques to
determine sustainable and continuous quality and reliability. The following
method divides the band between the Upper and Lower Limits into 6 equal
zones. The point distribution is used to determine the actual
condition, the current state. SPC is used to set up a Plan Of Action.
8 Tests to Determine Out Of
- Any points above the UCL or below the LCL
- 7 Points in a row going up or down
- 7 points in a row above or below the mean
- 2/3 points in a row in zone 3 or beyond
- 2/5 points in a row in zone 2 or beyond
- 3 points in a row in zone 2 or beyond
- More than 22/25 points in zone 1
- Less than 10 points out of 25 in zone 1
We consider the following 4
conditions to determine Machine/Process
Capability and Control:
- Condition A is ideal and
should always attempt to achieve. This condition is controlled and
- Condition B is acceptable,
but should be improved to obtain Condition A.
- Condition C is
uncertain. The condition is capable but out of control. This
condition need to be constantly supervised and adjusted to retain
control. Once the condition is in control, one can determine if
the condition follows A or B.
- Condition D is not capable an
out of control. To bring this condition back on track one will
need to define and implement specific measures. Once it is in
control, one could evaluate the capability. This condition can
only be used to forecast or predict the trend.
Our SPC Strategy:
measurement techniques and values
- Machine Capability
- Process Capability
- Plan Of Action,
P.O.Box 2715, Krugersdorp, 1740, Gauteng,
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customer specifications and requirements, when developing a new
Unique techniques to assure
sustainable and continuous quality and reliability."
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