the sample size to be inspect is always 1

[Former Member]

Hello !

I'm new in QM, I have an inspection plan without sampling procedure in the Characteristic control indicador, in the quality management view in material master, the material has the inspection type 01 and the 100%  inspection indicador is NOT checked. When the inspection lot is created in the sample view the sample size is the same that the inspection lot qty, but in the record result the sample to be inspected for a Characteristic is always 1.

Is it normaly or there are somethint that I'am forgeting to do in order to calculte the sample size to be inspected equal to the inspection lot qty?

Thanks a lot for your comments  and your help.

Vero

[anand_rao3 · Accepted solution]

Hi Vero,

If you don't maintain any sampling procedure in inspection plan then your sample size would be equal to lot quantity.

Now despite of whether you are using single or summerized recording, sample size remains same.

What is your lot quantity? What quantity you observe under "Inspect" column in QA32?

This quantity (under inspect column) must be equal to sample size that you observe in QA02 or QA03 under sample tab.

Are you using any alternate unit for inspection?

Regards,

Anand Rao

[Former Member · Accepted solution]

Hi Anand !

The sample size that I observe in QA02 is 10000 but in QA32 the quantity I observe under "Inspect" column is 1.

There aren't alternate unit for inspection only one is used.

Thank's for your coments

Vero

[former_member42743 · Accepted solution]

Again, since you are not using any sampling procedures what are you expectnig to see?  How can the system calculate the number of results to be anything BUT 1?  You are not giving it any information to calculate anything else.

Summarized recording means that you are telling the system you are only going to provide ONE result.  I.e. YOU are going to summarize whatever you are doing and provide one summarized result to the system.

So of course the number to inspect is going to be one.  What else can you expect the system to do?

FF

[anand_rao3 · Accepted solution]

Well I have different view here,

What I believe, summerized result recording means you need to input only 1 value under results column in QA32. That should not mean my sample size is 1. I tried this one, following is my observation.

I created Length as MIC with NO tick to sampling procedure. As a result of which system took lot quantity as sample size. i.e. 100 in my case. As I ticked this as summerized reading, I need to enter reading only once. The moment I enter my reading as 10.00 system caluates inspected column as 100 automatically.

Hence my conclusions are,

1. When I don't specify sampling procedure in inspection plan lot size becomes sample size
2. Sample size remains same irrespective of single or summerized result recording indicator.
3. If sample size is 100, for at least 1 MIC (The one to which sampling procedure is not assigned) inspect column should also figure out 100

Regards, AR

[former_member42743 · Accepted solution]

Anand,

I think we are saying the same thing.

I said because he used summarized recording the system is only expecting one result to be recorded, hence the "number to inspect" is one.  This is ONLY because he has no sampling procedure specified.  Had he used a sampling procedure, you are correct, the summarized recording has no affect on the sample size for the MIC.  My point was is that without a sampling procedure, and using summarized recording, what else could he expect other than a 1 in the units to inspect?  On what basis would anything else be proposed?  Had he used individual results he still would have only had to record one result since he didn't specify a sampling procedure.  But with larger scope set he COULD record more.  With summarized he can't.  Therefore, if he is picking summarized, why would he expect anything but to have a one for units to inspect without using a sampling procedure?

I said that the system is not really calculating a true sample size because he has not provided any sampling procedures for the system to do so.  Hence the inspection lot qty is the overall sample size.

He's basically not doing any sample calculations so I'm not sure exactly what he is looking for from SAP.

FF

[Former Member · Accepted solution]

Thanks I only wanted to understand witch shoud be the correct behaivor in the system.

Regards.

Vero

[former_member42743 · Accepted solution]

Forgive us if Anand an I got too deep into this!  We are both "into" QM and sometimes tend to get too deep into the finer nuances of the system!!!  We have known each a fairly long time and are friends so please don't interpret any animosity in what we say!

FF

PS>  I'd give him some of the points you awarded me.. He did some actual testing for you on this!

[anand_rao3 · Accepted solution]

Glad to know that Vero's doubts have clarified rather than points.  Keep posting! Regards

[former_member42743]

The inspection lot quantity is the amount of material subject to inspection, not necessarily the amount of material you are actually inspecting. 

The sample size should reflect the amount you are inspecting.  Since you have no sampling procedures and you have not specified 100% inspection or a percentage, the system is not really calculating an overall sample size, (sum of the all the material required per test).

Since you have summarized recording the system is only expecting one result.  Hence each MIC will show sample size of one.

Sounds like system is behaving as expected.

FF

[Former Member]

Is by chance you are using summerize result recording and not single result recording ? check the control indicator of MIC's.

You have not mentioned anything about the "sampling procedure" that you define against MIC in inspection char overview screen.

[Former Member]

I'm using summerize result recording .

I don't use samplling procedure.

Can you give me an idea please ?

[Former Member]

try and use Single result recording !