After completing this exercise, you will be able to:
• Create sampling procedures and sampling schemes.
Business Example
In your company, you want to determine the sample quantity that is proposed for the inspection using a suitable sampling procedure. You need a sampling procedure with the corresponding valuation mode for the different inspection types (attributive inspection, variable inspection). For certain inspections, you want to work with a fixed sample or a sample percentage.
Task:
Sampling procedures and sampling schemes
1. Creating a sampling procedure with a fixed sample.
Create a sampling procedure with the description SP01-## and a suitable short text. Use a fixed sample with the sample size n = 50 and a valuation mode that defines a valuation using attribute codes.
The sampling procedure is not used with inspection points. A stage change is possible. You do not need a control chart.
Hint: Use the pushbutton Sample to define the fixed sample size.
2. Creating a sampling procedure with a sample percentage
Create another sampling procedure with the description SP02-## and a suitable short text. Use the sample percentage as 5% and a valuation mode without valuation parameters.
The sampling procedure is not used with inspection points. A stage change is possible.
I n t e r n a l U s e S A P P a r t n e r O n l y I n t e r n a l U s e S A P P a r t n e r O n l y
for the inspections with the inspection severity Normal. Enter a sample size of your choice, an acceptance number (c1), and a rejection number (d1) for the following intervals.
Hint: Note that for automatic valuation during a single sampling inspection, the difference between the acceptance and rejection number must be exactly 1.
Lot size (to) Sample size c1 d1
100
1 000 10 000 Over 10,000
Hint: You should use a very large number, such as 10,000,000,000, as the last entry for the lot size. This is the maximum possible lot size that you can use.
Create a second sampling table (also without an AQL value) for an inspection with the inspection severity Reduced. Enter a sample size of your choice, an acceptance number, and a rejection number for the following intervals.
Lot size (to) Sample size c1 d1
100
1 000 10 000 Over 10,000
Hint: When you create the second sampling table, set the indicator With copy model so that the data from the first sampling table can be copied.
Then, you only have to change the sample size and the acceptance and rejection number.
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I n t e r n a l U s e S A P P a r t n e r O n l y I n t e r n a l U s e S A P P a r t n e r O n l y
PLM405 Lesson: Sample Determination
4. Creating a sampling procedure with a sampling scheme
Create another sampling procedure with the description SP03-## for an attributive inspection according to the number of nonconforming units. To do this, use sampling scheme S##.
The sampling procedure is not used with inspection points. A stage change is possible. You do not need a control chart.
The default inspection severity should be Normal. The sampling procedure must not be added to the allowed relationships.
I n t e r n a l U s e S A P P a r t n e r O n l y I n t e r n a l U s e S A P P a r t n e r O n l y
Solution 2: Sample Determination
Task:
Sampling procedures and sampling schemes
1. Creating a sampling procedure with a fixed sample.
Create a sampling procedure with the description SP01-## and a suitable short text. Use a fixed sample with the sample size n = 50 and a valuation mode that defines a valuation using attribute codes.
The sampling procedure is not used with inspection points. A stage change is possible. You do not need a control chart.
Hint: Use the pushbutton Sample to define the fixed sample size.
a) Logistics → Quality Management → Quality Planning → Basic Data → Sample → Sampling Procedure → Create (QDV1)
Enter the description SP01-## in the field Sampling procedure. ## is your group number. By choosing the Return key, the pushbutton Sampling procedure, or Enter, the Assignment screen appears. On this screen, you can define the short text for the sampling procedure, as well as the sampling type and valuation mode.
Field name or data class Values
Sampling type Fixed sample
Valuation mode Valuation according to char. attrib.
code
By choosing the F5 function key, the pushbutton Continue, or Enter, the Special Conditions screen appears. Since this exercise requires no further entries, you can skip to the next screen directly using the pushbutton Sample and enter the value 50 in the Sample size field.
Save your entries.
2. Creating a sampling procedure with a sample percentage
Create another sampling procedure with the description SP02-## and a suitable short text. Use the sample percentage as 5% and a valuation mode without valuation parameters.
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PLM405 Lesson: Sample Determination
The sampling procedure is not used with inspection points. A stage change is possible.
a) Logistics → Quality Management → Quality Planning → Basic Data → Sample → Sampling Procedure → Create (QDV1)
Enter the description SP02-## on the initial screen. On the assignment screen, enter a suitable short text for the sampling procedure, as well as the sampling type and valuation mode.
Field name or data class Values
Sampling type Sample percentage
Valuation mode Without valuation params
By choosing the F5 function key, the pushbutton Continue, or Enter, the Special Conditions screen appears. Since this exercise requires no further entries, you can skip to the next screen directly using the pushbutton Sample and enter the value 5 in the Sample percentage field.
Save your entries.
3. Creating a sampling scheme
You want to determine the sample size dependent on the inspection lot quantity.
To do this, create a sampling scheme with the description S## for an attributive inspection. The first sampling table should be used without the AQL value for the inspections with the inspection severity Normal. Enter a sample size of your choice, an acceptance number (c1), and a rejection number (d1) for the following intervals.
Hint: Note that for automatic valuation during a single sampling inspection, the difference between the acceptance and rejection number must be exactly 1.
I n t e r n a l U s e S A P P a r t n e r O n l y I n t e r n a l U s e S A P P a r t n e r O n l y
Lot size (to) Sample size c1 d1
100
1 000 10 000 Over 10,000
Hint: You should use a very large number, such as 10,000,000,000, as the last entry for the lot size. This is the maximum possible lot size that you can use.
Create a second sampling table (also without an AQL value) for an inspection with the inspection severity Reduced. Enter a sample size of your choice, an acceptance number, and a rejection number for the following intervals.
Lot size (to) Sample size c1 d1
100
1 000 10 000 Over 10,000
Hint: When you create the second sampling table, set the indicator With copy model so that the data from the first sampling table can be copied.
Then, you only have to change the sample size and the acceptance and rejection number.
a) Creating a sampling scheme: Logistics ? Quality Management ? Quality Planning ? Basic Data ? Sample ? Sampling Scheme ? Create (QDP1) On the initial screen, enter the description S## in the field Sampling scheme. ## is your group number. By choosing the Return key, the pushbutton Sampling scheme, or Enter, the Header Data screen appears.
On this screen, you can define the short text for the sampling scheme, as well as the valuation parameters and the assignment of sampling tables.
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I n t e r n a l U s e S A P P a r t n e r O n l y I n t e r n a l U s e S A P P a r t n e r O n l y
PLM405 Lesson: Sample Determination
Field name or data class Values
Valuation parameters Attributive insp.
Sampling tables for Insp. severities
By choosing the F5 function key, the pushbutton Continue, or Enter, the dialog box for choosing inspection severities appears. Choose the inspection severity Normal inspection using the input help for your first sampling table in the field New. Enter sampling plans in the view for creating the sampling table. For example:
Lot size (to) Sample size c1 d1
100 3 0 1
1 000 5 1 2
10 000 8 2 3
Over 10,000 10 5 6
Create an additional sampling table for the inspection severity Reduced inspection. To do this, choose the pushbutton Other table and select the corresponding inspection severity using the input help. If you want to copy entries from the first table, you must set the indicator With copy model. You can now define the sampling plan for the Reduced inspection. For example:
Lot size (to) Sample size c1 d1
100 2 0 1
1 000 4 0 1
10 000 6 1 2
Over 10,000 8 4 5
I n t e r n a l U s e S A P P a r t n e r O n l y I n t e r n a l U s e S A P P a r t n e r O n l y
Create another sampling procedure with the description SP03-## for an attributive inspection according to the number of nonconforming units. To do this, use sampling scheme S##.
The sampling procedure is not used with inspection points. A stage change is possible. You do not need a control chart.
The default inspection severity should be Normal. The sampling procedure must not be added to the allowed relationships.
a) Logistics → Quality Management → Quality Planning → Basic Data → Sample → Sampling Procedure → Create (QDV1)
Enter the description SP03-## in the field Sampling procedure. ## is your group number. By choosing the Return key, the pushbutton Sampling procedure, or Enter, the Assignment screen appears. On this screen, you can define the short text for the sampling procedure, as well as the sampling type and valuation mode.
Field name or data class Values
Sampling type Use sampling scheme
Valuation mode Attributive inspection nonconf. units By choosing the F5 function key, the pushbutton Continue, or Enter, the Special Conditions screen appears. Enter sampling scheme S##, which you created in exercise 3, Creating a sampling scheme in the Sampling scheme field. The sampling scheme S## has 2 sampling tables for different inspection severities. If you choose the pushbutton Additional data, the inspection severities are displayed, and you can choose a sampling table using the input help.
Save your entries.
Hint: Answer the query regarding “allowed relationships” with NO.
I n t e r n a l U s e S A P P a r t n e r O n l y I n t e r n a l U s e S A P P a r t n e r O n l y
PLM405 Lesson: Sample Determination