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Seamless Project Execution, from URS to Implementation and Maintenance
Since ISA S88 is widely used within the process industry, process engineers and automation engineers from the DCS vendors use a common terminology and structure to describe batch processes and production. Why not use this common language to create a DCS independent relational database, mapping the S88 plant model supporting the life-cycle of the project from (Unit Requirements specification (URS) to maintenance? Starting with the URS, data are entered in the database and over the subsequent project phases more and more details are added by the control engineers. The consequent use of types and instances together with the possibility to define rules for the later generation of software reduces the necessary input to a minimum. As just one database exists instead of several documents, data inconsistency is impossible. Later the DCS specific solutions are referenced to the system independent types in the database. The software for the DCS is generated, applying the rules set for the project. The implementation time and the number of faults is reduced dramatically. The content of the database is documented automatically through several standardized reports according to GMP guidelines, providing a secure way to fully comply with FDA requirements. Test documents are generated in a similar way.
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