Is AQL necessary for ISO 9001 receiving inspection?

[luciano]

Hello friends

In need some help to understand if I need AQL for incoming inspection or not for ISO 9001.
I am trying to implement ISO 9001 in the factory where I work, and I don't know what to do.
If I don't need AQL, how I will establish the appropriate sample for inspection.
If I need AQL, which is more proper.

Thank all of you very much.

[Jim Wynne]

Originally Posted by luciano

Hello friends

In need some help to understand if I need AQL for incoming inspection or not for ISO 9001.
I am trying to implement ISO 9001 in the factory where I work, and I don't know what to do.
If I don't need AQL, how I will establish the appropriate sample for inspection.
If I need AQL, which is more proper.

Thank all of you very much.

"AQL" (acceptable quality level) isn't necessarily related to sampling inspection; it can be applied as a result of sorting, for example. What do you do now to verify purchased material before use? Some companies do a lot of receiving inspection using standardized sampling plans (what you refer to as "AQL," I presume) and others little or none, opting instead to develop suppliers and rely on them to provide conforming material. There is no ISO requirement for receiving inspection, per se.

[luciano]

Originally Posted by Jim Wynne

"AQL" (acceptable quality level) isn't necessarily related to sampling inspection; it can be applied as a result of sorting, for example. What do you do now to verify purchased material before use? Some companies do a lot of receiving inspection using standardized sampling plans (what you refer to as "AQL," I presume) and others little or none, opting instead to develop suppliers and rely on them to provide conforming material. There is no ISO requirement for receiving inspection, per se.

Thank you Jim
I had some audits frome our costumers, and they ask me to show the criterions for incoming inspections. I don't have options to not verify the purchased material., and this inspections need to be veriy documented. I think, I can't verify 2000 part like 50000.
What do you suggest ?

Many, many thanks .

[Jim Wynne]

Originally Posted by luciano

Thank you Jim
I had some audits frome our costumers, and they ask me to show the criterions for incoming inspections. I don't have options to not verify the purchased material., and this inspections need to be veriy documented. I think, I can't verify 2000 part like 50000.
What do you suggest ?

Many, many thanks .

You didn't answer the question--what do you do now? What, if any, specific objections did your customers raise? What sort of problems do you have with acceptance of nonconforming material?

As a starting point, you should use the Cove's search function, starting with the threads listed towards the bottom of this page. There's lots of information here regarding sampling inspection and sampling plans.

[luciano]

Originally Posted by Jim Wynne

You didn't answer the question--what do you do now? What, if any, specific objections did your customers raise? What sort of problems do you have with acceptance of nonconforming material?

As a starting point, you should use the Cove's search function, starting with the threads listed towards the bottom of this page. There's lots of information here regarding sampling inspection and sampling plans.

Sorry because I din not answer to your question ?
Yesterday I had a free day, and I was not to work.

What I am doing now ? - to answer the question;

When I recive the suplly material I have a chekclist.
In my chekclist I am looking to:
1. If the material exist in my approved material list
2. if the supplier are approved
3. Documents (quality certificate)
4 I evaluate the conformity of quality certificate with tehnical characteristics
5 compare the material with master specimen
6 pack condition

(this is for plastic material . I work in a plastic mold injection factory)
For ather materials (pipes)
1.I masure diferent kind of dimensions
2 ...

But I don't know the proper sample size for quantity recived.

I had read the discution from forum.
Thank you for your time

[Johnson]

Hello,

I don't think AQL is a must. But it is a method which might be given up.
As an automotive supplier,the quality acceptance levl is zero. If one part is found with defect, the whole lot should be rejected no matter how large is the lot size.

I always use a fixed sample sie for receiving inspection. But th eacceptance cretiria is always zero !!! And there is no problem at all for customer auidtand the third aprty audit.

Best Regards,
Johnson Shao

[luciano]

Originally Posted by Johnson

Hello,

I don't think AQL is a must. But it is a method which might be given up.
As an automotive supplier,the quality acceptance levl is zero. If one part is found with defect, the whole lot should be rejected no matter how large is the lot size.

I always use a fixed sample sie for receiving inspection. But th eacceptance cretiria is always zero !!! And there is no problem at all for customer auidtand the third aprty audit.

Best Regards,
Johnson Shao

Thank you very much for your advice
My question is: How can I know the size of my sample to be relevant ?
Which are the rules to establish the size of my sample ?
Is percentage from the quantity recived ?

Best regards
God bless you



Thank you for your ansver

[Gert Sorensen]

Hi Luciano,

If you want to use AQL then this is what you need:

ISO 2859-1: Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptable quality limit (AQL) for lot-by-lot inspection.

Determine what quality level you can accept, and simply use the tables given in the standard to determine sample size and rejection criteria.

However, in order to help you further you need to elaborate a bit on what kind of raw materials you want to inspect. Is it compounds, foils, moulded items or?????