OSE571 Ocean Plant Design
Design Procedure and Key deliverables Concept Consolidation Production Availability
Design Basis (Philosophy)
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System Description Process Flow Diagram
Equipment Specification
Process Simulation
Equipment Design
Process Operation and Control Philosophy P&ID Safety Studies
Layout Risk Assessment HAZOP Caution: Not universally applicable Ocean Systems Engineering
Emergency Response (Escape Route, TR, Evacuation Means, Rescue Equipment, Emergency Power) Accident Mitigating Protection (Active/Passive Fire Protection, Fire/Blast Walls)
Accident: Fire/Explosion
Accident Controlling Protection (F&G Detection, ESD, Depressurization, Alarm)
Gas Leak Preventive Protection (Structural & Machinery Integrity, Relief, PSV) Basic Process Control (P, T, F, Surge, Back Pressure) Inherent Safety Design (Layout, Inventory, Leak, Ignition)
Layered Structure of Safety Systems against Fire and Explosion Ocean Systems Engineering
Workflow for Process Control System Description (W4)
Process Operation and Control Philosophy (W9)
P&ID (W11)
Functional Design Specification (W11)
Logic Diagram
Field Implementation
Ocean Systems Engineering
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The key document for operation and control
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Operation Philosophy
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Big picture of operation
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Operation modes defined
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Operation philosophy for each mode
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Safety instrumentations
Control Philosophy §
Detailed feature
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Unit-by-unit description
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Control loops defined
Ocean Systems Engineering
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Big picture of operation §
Working principles
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Degree of automation
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Number of operators required
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Operation modes defined
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Operation philosophy for each mode
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Safety instrumentations
Ocean Systems Engineering
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Big picture of operation
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Operation modes defined §
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Steady -
Operational cases: loading, offloading, etc.
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Capacity: Max, Normal, Min (turndown)
Dynamic -
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Shutdown
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Emergency shutdown
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Operation philosophy for each mode
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Safety instrumentations
Ocean Systems Engineering
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Big picture of operation
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Operation modes defined
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Operation philosophy for each mode §
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Governing philosophy only
Safety instrumentations
Ocean Systems Engineering
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Big picture of operation
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Operation modes defined
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Operation philosophy for each mode
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Safety instrumentations
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Causes and counter measures
Ocean Systems Engineering
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Detailed feature §
Subsystems (units), equipment, components
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Control targets and variables
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Set points
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Control and operation procedure
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Unit-by-unit description
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Control loops defined
Ocean Systems Engineering
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Detailed feature
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Unit-by-unit description
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Follow the main stream
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Describe the situation and circumstance where control is required
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Describe how to manipulate the components
Control loops defined
Ocean Systems Engineering
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Detailed feature
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Unit-by-unit description
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Control loops defined §
Controlled variables with set point
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Manipulated variables
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Disturbances
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Working mechanism
Ocean Systems Engineering
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Why about control of other subsystems like power generation? §
Utility: well proven, repeated design
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Process: specific to the facility à
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Well established control
Need to establish the control algorithm
Who will take care about the followings tasks including P&ID and logic diagram? §
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New design
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process eng neers
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Logic diagram
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Functional design specification (W11) to bridge them
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electrical engineers
Can we make it without knowledge of control theory? § §
Advanced controls
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very rare in real process industry (Why?)
Fundamental understanding of the process control
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enough
Ocean Systems Engineering
