Tiêu chuẩn ISO 17020:2012 Inspection Standard Application Document

These criteria detail general principles of good inspection practice. Some clauses may not be relevant to particular industry groups or to small (e.g. one-person) operations.

There are many types of inspection activities that can be conducted. These include activities such as design verification, fabrication inspection, product inspection, installation inspection, commissioning inspection, in-service inspection, expediting, witnessing, consignment verification, quantity surveying, modelling and classification inspection. Inspection of processes includes personnel, facilities, technology and methodology. Interested parties are referred to the guidance documents identified in the opening paragraphs to this section.

Professional judgement is understood to entail decision making that is supported by a body of rigorous and objective analysis.

Identification of what is inspected and where in the process professional judgement is exercised, enables inspection activities to be discriminated from other activities, such as product approval schemes or personnel licensing systems.

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Các chỉ số năng lực quá trình: Cp, Cpk, Pp, Ppk - Ý nghĩa và cách thức sử dụng

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For many years industries have used Cp, Cpk, Pp and Ppk as statistical measures of process quality capability. Some segments in manufacturing have specified minimal requirements for these parameters, even for some of their key documents, such as advanced product quality planning and ISO/TS-16949. Six Sigma, however, suggests a different evaluation of process capability by measuring against a sigma level, also known as sigma capability. Incorporating metrics that differ from traditional ones may lead some companies to wonder about the necessity and adaptation of these metrics. It is important to emphasize that traditional capability studies as well as the use of sigma capability measures carry a similar purpose. Once the process is under statistical control and showing only normal causes, it is predictable. This is when it becomes interesting for companies to predict the current process’s probability of meeting customer specifications or requirements. Capability Studies Traditional...
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