Reduction of Errors of the Conformity Assessment During the Visual Inspection of Electrical Devices

摘要

Visual inspection is the quality control with a significant share of human labor, so that it is prone to errors and mistakes during the assessment of compliance of product features with the requirements. In the visual inspection, controllers can commit two types of errors. Type I error means that a controller detects a defect that does not exist. This category is called the risk of the producer, as the producer runs the risk of rejection of good product. Type II error means that control does not detect a defect. This category is called the risk of the supplier, because the customer runs the risk of receiving a defective product. In the paper, results of research for identification and assessment of errors of conformity assessment of the product - electric switch - were presented. In the research to assess a visual inspection, the coefficient Attribute GR&R was used. Corrective actions in order to reduce the possibility of occurrence of these errors in the visual inspection of the device were proposed and implemented.