Zero Defects

"Zero Defects" is a notional quality standard developed by Phil Crosby. Although applicable to any type of enterprise, it has been primarily adopted within industry supply chains wherever large volumes of components are being purchased (common items such as nuts and bolts are good examples).The principles of the methodology are four-fold:Quality is conformance to requirements.Defect prevention is preferable to quality inspection and correction.Zero Defects is the quality standard.Quality is measured in monetary terms – the Price of Nonconformance (PONC) Every product or service has a requirement: a description of what the customer needs. When a particular product meets that requirement, it has achieved quality, provided that the requirement accurately describes what the enterprise and the customer actually need. This technical sense should not be confused with more common usages that indicate weight or goodness or precious materials or some absolute idealized standard. In common parlance, an inexpensive disposable pen is a lower-quality item than a gold-plated fountain pen. In the technical sense of Zero Defects, the inexpensive disposable pen is a quality product if it meets requirements: it writes, does not skip nor clog under normal use, and lasts the time specified.
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A performance standard and methodology developed by Philip B. Crosby that states if people commit themselves to watching details and avoiding errors, they can move closer to the goal of zero.