Most of the importers use General Inspection Level II to inspect a batch of product and Special Inspection Levels are reserved for special test led on products such as torn test, high pot test, strength test, etc So now, let's consider 10 units ordered by an importers who chosse General Inspection levels II.
In the table 1 you get L as sampling size code letters. Now by reporting this letter in the table 2, you get , which is how many pieces have to be inspected over 10 to represent statistically the quality of the batch of 10 piecs. Products we inspect Our company Our methodology Coverage location Career. In order to learn how this method determines how many pieces are selected, let's work on an example: Considering a production of 10 units.
Sampling Size Code Letters. Lot size. General Inspection Levels. A major defect is likely to result in failure when the part is used but it does not cause a hazardous or an unsafe condition. Compared to the other inspection levels, it has normal inspection costs and normal customer protection. When in doubt, start with this inspection level.
Level III. Select this level when inspecting features that could cause critical defects. A critical defect causes a hazardous or unsafe condition. This inspection level provides the best protection to the customer. When using this plan you will encounter the highest inspection costs.
Select this level when the act of inspection damages or destroys the inspection part. Use this inspection level only if the inspection costs are extremely severe to your company. It provides the lowest protection to your customer. A minor defect will not prevent the parts usability for its intended purpose. Useful for inspection of features with major importance.
A major defect is likely to result in failure when the part is used but the failure does not cause hazardous or unsafe condition. When using this plan you will encounter lower inspection cost. Use this plan when inspecting features that could cause critical defects. Critical causes a hazardous or unsafe condition. When using this plan you will encounter lower inspection costs.
If you purchase Snap Sampling Plans! The software is easy to use and includes other sampling plans too! As a bonus, I include the complete Mil Std e document with the software download. This page features a sample size calculator and discusses many elements that you need to consider when you determine sample size.
Learn about AQL Sampling. Page describes the step by step solution to implementing an inspection sampling plan.
Is attribute sampling confusing? Do you want to know the different types of sampling? This article discusses attribute plans. Download Today.
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