Classification of defects: The listing of possible defects of a unit, classified according to their seriousness. Note: Commonly used classifications: class A, class B, class C, class D; or critical, major, minor and incidental; or critical, major and minor. Definitions of these classifications require careful preparation and tailoring to the product(s) being sampled to ensure accurate assignment of a defect to the proper classification. A separate acceptance sampling plan is generally applied to each class of defects.
Commonly TIC industry adopted 3 types of defect classifications which included Critical, Major, Minor defect.
Critical Defect = Not Allowed
Defects that could result in hazardous or unsafe conditions for individuals using or maintaining the product, as well as defects that contravene legal regulations.
Functional defects reducing the usability or strength of the product as well as obvious visual defects that would reduce the sales value.
Defects that will not reduce the use of the product, but may influence the sale.
General guideline for determining major or minor defects at arm’s length
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