抄録
In some major companies in Japan, many inappropriate manners in quality assurance such as rewriting inspection data, producing and delivering products those are not satisfy customer requirements have been occurred recently. And those inappropriate manners deteriorated reliability and safety of those products, and the sales of those products fell down and also the presidents of those companies were forced to leave from their position in some cases. The research group for high reliability and safety of JSQC have been investigating and studying about those inappropriate manners in quality assurance. In the former report, four companies were picked up and investigated causes of inappropriate manners in those companies. And then, the causes of inappropriate manners were classified into 5 groups such as human, equipment, quality control system, management of quality control and culture of company and compliance.
This report describes the investigated results of those four groups and proposes the check points to prevent predictable problems of inappropriate manners.
