INSPECTION ENTRY
This is a screen displaying the records of the
products that enter the quality control storage.
The materials that enter the storage are
obtained either directly from the suppliers or
our own production units. Each party of products
is subject to a control level in which they are
inspected. This control level is determined by
the system based on the past quality
performances of our suppliers or production
units. The sample size depends on the amount of
party and the control level. It is represented
with K and classified as follows in relation to
the importance of the characteristics of the
materials to be controlled:
K1 - the sample size for the most important
characteristics of the materials to be
controlled.
K2 - the sample size for moderately important
characteristics of the materials to be
controlled.
K3 - the sample size for less important
characteristics of the materials to be
controlled.
The characteristics of each materials that will
be controlled should be classified within the
framework of K1/2/3. After the characteristics
of each sample is controlled, the control values
and results found are entered into the control
form and control results page respectively.
INSPECTION PLAN
Inspection plan intends to show how Mipsis inspects the
lots. Inspection level act is a circular process composed of
acceptances, rejects and conditional acceptances. A separate
inspection plan may be applied to each customer and
materials. The better the quality performance of the
supplier, the less strict the inspection is. In other words,
more quality problems require more strict inspection. For
instance, if any materials of supplier A are accepted in 5
lots consecutively, next time the materials purchased from
this supplier is exposed to a "reduced inspection plan" .
The rejection of one lot makes it necessary to turn to a
"normal inspection plan" that is more detailed than the
reduced plan. "Tightened plan", on the other hand, is called
for a thorough inspection of the materials obtained from the
suppliers with poor past quality performance.
SAMPLING TABLE
In case the sampling table is not defined, default tables
defined for all products will be used. If the sampling table
is redefined for a specific product by pressing the "New
Sampling Table" button, nine tables will be added for each
of the inspection plans (tightened, normal, reduced) and the
importance of the characteristics (critical, moderate, low).
These tables can be customized according to your needs. For
more detailed information, please refer to Military Standard
MIL-STD-105E.
INSPECTION FORM
The control form includes detailed information about the
inspection carried out. It is not compulsory to fill out
that form. If the necessary definitions are given on the
product-characteristics section on the 'Descriptions' pages,
the control characteristics are created for each sample with
a click on the 'Prepare' button. During the control stage,
the acceptable values of each characteristics can be
displayed, and the values found and the results can be
entered.
INSPECTION RESULT
Results screen keeps all the decisions taken about the
controlled products in the quality control storage. In case
the products are rejected or conditionally accepted, the
failure codes and rates should be entered. If the party is
accepted, the rejected amount must be left out. Returned
Goods Despite all the inspection processes that products and
materials undergo, there can still be some defective goods
that can be returned by the customers, the firm of which we
are the supplier, or our own production unit. This screen
records in detail these defective materials and products
returned by these sources. If required, corrective action
request can be initiated.
PPM RATES
PPM (Parts per million) is a measurement used today by
customers to measure quality performance. One PPM means one
(defect or event) in a million or 1/1,000,0000!
There was a time when you were considered a pretty good
supplier when your defect rate was less than 1%, (10,000
PPM), then the expectation was increased to 0.1% or 1,000
PPM. Now the rate for most automotive components is targeted
at 25 PPM or 0.0025% .
PPM = 1,000,000*(Rejects+Returns)/Total Shipment
