Date post: | 24-May-2015 |
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Engineering |
Upload: | idc-technologies |
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Practical Batch Management and Control (Including S88) for Industry
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S88 Nature
• Exciting?
• Constrained?– Don’t stray from
straight & narrow
• Conceptually difficult?– Subtle & critical
distinctions
• Transparent tools
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Software – Desirable Attributes?
• Efficient – no, No, NO!
• Effective – YES
• Clever?
• Modular
• Consistent
• Readable
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“ Please use the parameter duplication program to copy recipe formulae so that we can defer the mixer mass
value to the operator level “
Speak Batch Management Lingo?
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Universal model: Helps you understand/define the big picture Ties the detail in with the big picture Allows better communications
between staff with vendors
Reduce risk WRT planning, costing, project management Basis for better documentation Facilitates integration of different vendor offerings Facilitates configuration of system solutions
Batch Standard – Why Bother?
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S88 Approach
decompose into modules separate recipe from the equipment control emphasis on information flow between modules S88 is mostly about the control of control S88 does not discuss low level control, apart from the
modularization and definition of a state machine Distinction between Batch MANAGEMENT and
Batch CONTROL
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Consists of Followings Sections:
Scope Normative references Definitions Batch process & Equipment - Physical Model Batch Control Concepts - Procedural Model, Types of
Recipes Batch Control Activities & functions
ISA-S88.01 Batch Control - Part 1
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• Provides a data model for recipe, batch schedule, batch history, and equipment objects
• Provides data exchange formats for same• Provides language guidelines to support data exchange
between components of S88.01• Provides language guidelines for user representation of
procedural elements
ISA-S88.02 Batch Control - Part 2
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• Defines content and format of a general recipe• Defines methodology for conversion of a general or site
recipe to a master recipe
ISA-S88.03 Batch Control - Part 3
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S88 – NOT a compliance standard
• No S88 Police!
• No testing labs
• No certification
• Some vendors’ development pre S88– May be perfectly OK– Use of terms may not be consistent with S88
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ISA S88.01 Models
• Physical Model– Defines the batch process equipment
• Procedural Model – Defines the control that enables equipment to perform a
task
• Process Model– Defines the material processing requirements; processing
functionality NOT equipment
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Person Model?
• Physical: height, weight, eye colour, inside leg, hair, health etc.
• Ability: skills, hearing, eyesight, dexterity, speed, intelligence etc.
• Personality: extrovert, introvert, gentle, aggressive etc.
• Societal: family, wealth, class, reputation, standing, connections, occupation, interests
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DO YOU WANT TO KNOW MORE?
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