Quality planning process, diagram

A diagram of the quality planning process is shown in Fig. 4. This planning process represents the first four steps in the continuous improvement cycle (Fig. 5), discussed in the section The Quality Improvement Process. ... 

The Lrststep is mainly to put together a plan and describe sequential process activities. For each process in the Low diagram, inputs and outputs are shown with a list of desired quality attributes and process variables or parameters. Once the entire process diagram is laid out, a systematic approach... 

Next the individual process steps are developed (design, calculations, tests, quality assurance measures). All of these activities enter the piping and instrumentation (P I) diagram, which later forms the basis for preparing the plant model, planning construction work, technical data sheets, and the safety and measurement and control concept. 

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