WG4 - Flow Analysis
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Last update : 13/09/2003

This working group acts under the World Batch Forum authority. The FBF supports its activity within the French community, which was a main contributor to the Flow Analysis methodology. 

This group is also in charge of the consensual translation of the ISA88 terminology in French.

Those who want to participate in a French Only environment may subscribe to the the corresponding subgroup.

Ce groupe de travail est établi sous le contrôle du World Batch Forum. Le FBF relaie ces travaux dans la communauté Francophone, qui a assure la principale contribution au développement de la méthode d'Analyse des Flux. 

Ce groupe prend également en charge l'établissement d'un consensus autour de la terminologie française de la norme ISA88.

 Ceux qui désirent participer dans un environnement francophone peuvent s'inscrire au sous-groupe corrrespondant.

Le groupe comprend environ 50 experts industriels dans les domaines de la Pharmacie, Agro-Alimentaire, Chimie, Cosmétique. Les pays suivants sont également représentés : France (15 membres), Afrique du Sud, Australie, Irlande, Royaume Unis, Hollande, Allemagne, Etats-Unis, Turquie

Purpose

Flow Analysis aims at supporting efficient plant processing equipment modularization in a way that simplifies modules interactions, improves operation safety and dramatically reduces exception handling overhead.

The purpose of this report is to develop an efficient methodology based on current practices and to introduce within the ISA-88 models the critical elements of this method to enforce physical and equipment procedural model design.

This work is intended to help people from process design, operation and process control communities to well understand these concepts and to communicate together, producing robust and safe applications on a consistent basis.

It should also help vendors to develop supporting tools based on consensual concepts.

Sponsors

These companies are actively supporting this work/

	French group chair, French contributions gathering and editing
	Supported the First draft editing
	Supported the Second draft editing
	Supported the Third draft editing

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Summary and Objectives

The ISA 88.00.01 standard does not provide much information for the specification of Control and Equipment modules boundaries. However, S88 provides more consistent guidelines to define the upper entities of process and procedural models.

Thus, many S88 implementation reports raise the issue of Process Cell breakdown into its lower level components (Units, Equipment Modules and Control modules). From the “Top-Down” to the “Bottom-Up” through the mixed approaches, each project involves user preferences through specific guidelines.

In 1988, RHONE POULENC began to develop a. formal control design methodology to ensure the operation safety of its hazardous chemical plants. The result was a method based on analytical check-up of material and energy flows to define elementary equipment entities and process functionalities definition. The benefits were inherent interlocks at the actuator level to enforce operation safety whatever is the operation mode and cross-contamination prevention.

The aim of this workgroup is to formally define the method as an S88 complementary guideline on a wider supporting basis, collecting the actual knowledge and involving fresh ideas from newcomers.  This work will help people from process design, operation and process control communities to well understand these concepts and to communicate together, producing robust and safe applications. It will also help vendors to develop supporting tools based on a consistent, mastered documentation.

Scope and deliverables

Subject to approval and agreement between interested parties, the following topics may be addressed:

• Publish a charter containing a mission and vision statement for the working group

• Develop a comprehensive report defining the basics of the method using S88 terminology

• Develop an extended set of process breakdown examples

• Produce a practical guideline to implement the method

• Define basic requirements for design and execution tools supporting the method

• Define data structures and / or attributes for communication between objects

• Define tests procedure to assess the level of compliance and completeness of a specified application or tool.

Copyright in the end result of this working group will reside with the WBF. It should be. However, it may be submitted to the ISA for producing an ISA 88 technical report or addition to the standard. In this case, the copyright will be reassigned to ISA.

Timescale

Hold...