How to Select a Statistically Valid Sampling Plan

H

hitesh

#1
Hi,

If any body can provide me incoming raw material inspection procedure which requires use of statical sampling inspection plan, I will appreciate it.

Sincerely,
Hitesh
 
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H

hitesh

#3
Re: Incoming Raw Material Inspection Procedure

Hi Harry,

Thanks for your feed back. I have verified "Incoming" and "Receiving" threads but I could not find any incoming inspection sampling procedure which uses statical sampling plan.

Please let me know if you have a procedure shows how to select AQL and Inspection Level for each particular group of product.

Regards,
Hitesh
 

Jim Wynne

Staff member
Admin
#4
Re: Incoming Raw Material Inspection Procedure

Hi Harry,

Thanks for your feed back. I have verified "Incoming" and "Receiving" threads but I could not find any incoming inspection sampling procedure which uses statical sampling plan.

Please let me know if you have a procedure shows how to select AQL and Inspection Level for each particular group of product.

Regards,
Hitesh
"Raw material" covers an awful lot of different types of commodities, so the type of procedures you're looking for will be unique to each organization. Determining requirements for receiving inspection is a matter of risk analysis, which will also be different for your company than it is for mine.

You need to familiarize yourself with the general concept of acceptance sampling, the various standard sampling plans available, and then determine what level of risk is acceptable for each type of incoming commodity you're dealing with. There's lots of information available here about receiving inspection and sampling plans. You can start with the list of related threads at the bottom of this page, and also use the Cove "Search" function.
 
H

hitesh

#5
Re: Incoming Raw Material Inspection Procedure

Hi Jim,

I am familiar with ISO 2859 series of standards. We have decided to use ISO 2859 -1 and ISO 2859-2 for our inspection purpose.

When you say "Risk" that the company is willing to take, do you mean risk in terms of AQL/LQ value?

Sincerely,
Hitesh
 

Jim Wynne

Staff member
Admin
#6
Re: Incoming Raw Material Inspection Procedure

Hi Jim,

I am familiar with ISO 2859 series of standards. We have decided to use ISO 2859 -1 and ISO 2859-2 for our inspection purpose.

When you say "Risk" that the company is willing to take, do you mean risk in terms of AQL/LQ value?

Sincerely,
Hitesh
I mean the risk you're willing to assume that using sampling plan x, "good" material will be rejected or bad material will be accepted.

Added in Edit: I just realized that this is an issue regarding medical devices, and I know next to nothing about those requirements. There may be specific sampling requirements that I'm unaware of.
 
Last edited:
H

hitesh

#8
Re: Incoming Raw Material Inspection Procedure

Thank Harry,

Yes, I am looking for how to select validated statical sampling plan and more specifically what AQL values are used most commonly in Medical Device Manufacturing Industry for Incoming Inspection.

Sincerely,
Hitesh
 
S

sshankle

#9
Re: Incoming Raw Material Inspection Procedure

The sampling plan parameters (such as AQL) you select will be based on the specifics for your company and the item(s) you are inspecting.

Another thing for your consideration is that AQL is producers risk. In medical devices it may be more apropriate to use LTPD (consumers risk) as your most critical parameter for basing your plan, but again this is situation specific.

I hope that helps...

Scott
 
H

hitesh

#10
Re: Incoming Raw Material Inspection Procedure

Thanks Mark,

I agree with you but the benefit of using AQL is that you can apply switching rules.

Sincerely,
Hitesh
 
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