If you pull the parts off the top of the pile for the inspection sample, this is not random inspection. Select the parts randomly from the lot is critical to making a sound decision on the lot. With over 10,000 sampling possibilities, Snap Sampling Plans! guides you in selecting the correct AQL sampling plan. Establish the Sample Size, Accept and Reject Criteria Snap Sampling Plans! software fixes this. Changing parameters is very time consuming. Find your inspection criteria on Table D. Open the standard, review table A which takes you to table C which takes you to Table D. When changing the parameters, you increase the time to find your inspection sampling plan. Within the standards, for each different parameter, there are different tables. Again Snap Sampling Plans! simplifies the selections for the users. Without reading the standards or receiving training, the parameters can be confusing. Other parameters include defect percentage, sampling level, inspection level, and inspection type. Two of the common parameters for each plan is AQL percentage and lot size. Since the authors wrote each AQL sampling plan to cover a given inspection situation, each plan has different parameters. Snap Sampling Plans! quickly lets you select and apply the correct AQL sampling plan. These courses detail the major plans and elaborate on the AQL tables.įortunately, you don’t have to take a college course to learn this material. Some plans allow for defects (or inspection mistakes), some don’t.īecause of the complexity, there are college level courses that cover sampling theory. Some plans allow for reduction of inspection when defect levels decrease, some don’t. Some plans focus on safety related issues, while some cover major and minor features. Some plans were written for lot inspection, while some for production inspection. Authors established these plans based on different situations. There are many statistical AQL sampling plans. Are you inspecting parts for receiving inspection? Are you monitoring production? Do you know the history of defects for the material? Are inspecting for safety issues? Do you allow for defects during sampling? Probably the most difficult step of the sampling stages because selecting the correct AQL sampling plan depends on your situation. Snap Sampling Plans! software combines all the key industry standard attribute sampling plans into one place.
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