Affichage des articles dont le libellé est Process Flow Diagram. Afficher tous les articles
Affichage des articles dont le libellé est Process Flow Diagram. Afficher tous les articles

jeudi 24 juillet 2014

P&ID and PFD in the Document Control Flow

"Any change in the "PID" impacts your document control process" was the first mention I heard about the P&ID. From the information manager's side of the box, it could have been either a Plan Identifier or a Project Initiation Document, but obviously both were out of scope. Trying to sort this out, I eventually found a few useful resources explaining what a Piping & Instrumentation Diagram was and what it was used for.


To understand the links between the P&ID and his twin, the Process Flow Diagram (PFD) :

  • A detailed presentation from the engineer point of view, here, another about the main differences between P&ID and PFD, here

  • Multilingual (European) pages about P&IDs : this page lists the Oil & Gas instrument abbreviations, and this one provides an overview of the P&ID design and how to read it (tag numbers, loop identification, ...). 

  • See here the drawing symbols for P&ID, Isometric drawings and piping arrangement

  • To translate and understand the basic designs I usually refer to the Wikipedia pages, in English or french, or to universities websites such as the ETS canadian website.

Document Control processes, P&ID standards and software specifications

  • This presentation of a P&ID also introduces to basic line and instrument symbols

  • Useful checklists for P&IDs review and engineering packages review, here.

Compliance and control sheets : ISA and ISO standards :

ISA series
  • ANSI/ISA-5.1-2009 : Identification, Symbols and instrumentation

  • ISA-5.2-1976 (R1992) : Binary Logic Diagrams for Process Operations

  • ISA-5.3-1983 : Graphic Symbols for Distributed Control / Shared Display Instrumentation, Logic and Computer Systems

  • ANSI/ISA-5.4:1991 : Instrument Loop Diagrams

  • ISA-5.5:1995 : Graphic Symbols for Process Displays

  • Standard : ANSI/ISA-5.06.01-2007 : Functional Requirements documentation for Control Software Application

ISA data sheets :
  • ISA-20.00.03-2001 : Specification Forms for Process, Measurement and Control Instruments, Part 3, Form Requirements and Development Guidelines

  • ISA-TR20.00.01-2007 : Specification Forms for Process Measurement and Control Instruments, Part 1, General considerations

Former data sheets and the previous ISA standard (ISA-S20:1981 : Specification Forms for Process Measurement and Control Instruments, Primary Elements, and Control Valves)

Associated ISO series
  • ISO 14617-1:2005(R2010) : Graphical symbols for diagrams -- Part 1: General information and indexes

  • ISO 14617-1:2005 : Part 2-Part 17

  • And associated standards ICS 01.080.30

Management of process hazard :
  • OSHA : chemicals

  • API RP 750 : petroleum, offshore facilities

Former instrumentation standard if you deal with the archives :
  • SAMA

Document control software :

By designing links between the P&ID, the PFD and the Master Document Register inputs in the Enterprise Content Management System, you may secure your document control process and tame the changes in revision.
Research : Thomas Heer. Controlling Developement Processes. A Windows Workflow Foundation based framework for dynamic workflows and a testing review for .NET applications