There are a number of words and phrases which are not in common use and, more problematically, there are a number which are in common use, but mean different things to different people. In this glossary, I define the sense in which I am using them in this book. This is intended to be the most commonly held meaning.

Basic Engineering Design Data (BEDD) Information compiled to allow conceptual design in petrochemical sector

Best Practice The consensus heuristics of practitioners

Block Flow Diagram (BFD) Academic approximation of a PFD

BS British Standard

CAD Computer-aided design/drawing

Capex Capital expenditure

Conceptual Design The initial stage of design; content varies between sectors

Consultancy A company which offers advice, ...

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