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Quality Costs also known as the "cost of unquality" Where every department can contibute to the compnay losses |
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1. Must use the cost of quality (Both good and bad quality) as the driving force for decision making.
2. Must include the use of statistical methods for controlling the process and task-oriented teams to solve problems.
But the problems to be solved and the priority of solving problems is based on quality costs.
1. Identify "quality" losses
2. Begin corrective action
3. Achieve cost reductions
4. Increase productivity
5. Improve customer relations
Q.C. Terminology To |
$ To Upper Management |
|
$ $ $ |
__________________ $ Profit/Loss |
Key Point: To best communicate quality problems and results of quality studies to management and production talk with the universal language $$$$.
Prevention
Appraisal
Internal Failure
External Failure
Manufacturer |
Prevention |
Appraisal |
Internal Failure |
External Failure |
All "Quality" Magazine June, 1977 |
10.% |
26.% |
43. % |
21.% |
U.S. Steel Bar & Plate Division Gary Works 1981 |
1.5% |
16.% |
79.5% |
3.% |
Fisher Body Metal Fabrication 1982 |
6.% |
14.% |
73.% |
7.% |
Heavy Equipment Mfg. 1984 |
10.% |
Combined | 26.% |
64.% |
Manufacturer |
% of Sales |
Opt. % of Sales |
Quality Costs/yr. |
Annual Improvement $./yr. |
"Crosby" |
15.% |
5.% |
||
U.S. Steel |
17.% |
5.% |
$1.7 Billion |
$750. Million |
Detroit Diesel Allison |
10.% |
5.% |
$300. Million |
$150. Million |
Fisher Body Division |
10.% |
5.% |
$26. Million | $13. Million |
Many quality costs studies have shown that in addition to the "normal", known costs of poor quality (i.e. scrap and rework) many hidden costs are caused by poor quality.
These costs are hidden because the typical cost accounting system classifies them by the type of cost, not by their cause.
Some studies show that in the typical manufacturing company for each known $1 of scrap and rework there is an additional $6 to $7 in "hidden" costs.
Assume a company has a 10% scrap rate.
For every 100 parts it ships it must produce, at least in part, 111.
If through the use of SPC the scrap rate can be lowered to 3%, then 8 fewer parts must be produced to ship every 100 parts in the order.
This improvement in quality has a net effect that is the same as a productivity and capacity increase of 7%. This is in addition to the associated reduction in quality costs.
Assumptions . . .
Two ways to raise your profits:
Increase sales and reduce costs.
Much additional sales and costs savings are necessary to generate the additional $100 profit?
Using Additional Sales
$2000.00 X .05 = $100
Conclusion: You must generate $2000.00 in sales to make an additional $100 after taxes.
Using Cost Reduction
$149.25 X (1 - .33) = $100
Conclusion: You must only save $149.25 to make an additional $100 after taxes.
Which is easier to do, sell an additional $2000.00, or save $149.25?