Process Controls for Industrial Facility Systems
Course Description
Process control is the active manipulation of industrial process variables such as temperature, pressure, flow, and liquid level to maintain a desired operating condition. Think of it as the central nervous system of a chemical plant or refinery-without it, operators would be constantly chasing deviations, and quality would be highly inconsistent. Process control ensures that facility systems operate safely, efficiently, and within environmental and product quality specifications. When effective, it prevents equipment damage, reduces off-spec product, and cuts energy waste. Conversely, poor control leads to safety incidents, high operating costs, and regulatory fines. Process control applies equally to continuous processes like crude oil distillation and batch processes like pharmaceutical reactor mixing. The ultimate goal is always the same: minimize the difference between the measured process variable and the desired setpoint, and do so quickly without excessive oscillation.
What you'll learn in this course?
By the end of this course, learners will be able to:
Identify the key components of a process control loop and explain their functions in industrial facility systems.
Differentiate between common control strategies including feedback, feedforward, cascade, and ratio control.
Perform basic PID controller tuning using Ziegler-Nichols and other empirical methods.
Interpret piping and instrumentation diagrams (P&IDs) in relation to control system design.
Apply safety instrumented system (SIS) principles and understand Safety Integrity Level (SIL) allocation.
Troubleshoot common process control issues such as valve hysteresis, deadband, and oscillation.
SECTION 1 - INTRODUCTION TO PROCESS CONTROL (Slides 4-12)
Process control is the active manipulation of industrial process variables such as temperature, pressure, flow, and level to maintain a desired operating condition.
It ensures that industrial facility systems operate safely, efficiently, and within environmental and product quality specifications.
Prerequisites
Basic engineering knowledge and familiarity with industrial systems and engineering units
Course Curriculum
- What is Process Control in Industrial Facilities?
- Key Process Variables in Industrial Systems
- Open-Loop vs. Closed-Loop Control Systems
- The Concept of Setpoint, Process Variable, and Error
- Industrial Example: Boiler Drum Level Control
- Disturbances and Their Impact on Control
- Stability and Response in Process Control
- Common Industrial Processes Requiring Control
- Economic Importance of Good Process Control
- The Basic Feedback Control Loop (Five Components)
- Sensors and Transmitters: Measuring Process Variables
- Controllers: From Pneumatic to Digital
- Final Control Elements: Control Valves
- Control Loop Representation on P&IDs
- Reading P&ID Symbols for Controls
- Example P&ID Walkthrough: Tank Level Control
- Direct vs. Reverse Acting Controllers
- Signal Transmission Standards in Industry
- Loop Tuning Basics: Why It’s Necessary
- Feedback Control: The Foundation
- Feedforward Control: Anticipating Disturbances
- Cascade Control: Two Controllers, One Loop
- Ratio Control: Maintaining Proportions
- Split-Range Control: One Controller, Two Valves
- Selective (Override) Control
- Adaptive Control: Self-Tuning Systems
- Model Predictive Control (MPC) Overview
- Choosing the Right Control Strategy
- Industrial Case Study: Distillation Column Control
- The PID Algorithm: Three Terms Explained
- Proportional-Only Control: Limitations
- Proportional-Integral (PI) Control: Most Common in Industry
- Proportional-Integral-Derivative (PID) Control
- Ziegler-Nichols Open-Loop Tuning Method
- Ziegler-Nichols Closed-Loop (Ultimate Gain) Method
- Lambda Tuning (Internal Model Control)
- Practical Tuning Procedure for Plant Engineers
- Common Tuning Mistakes to Avoid
- Auto-Tuners and Adaptive Tuning
- Programmable Logic Controllers (PLCs) in Process Control
- Distributed Control Systems (DCS) for Large Facilities
- SCADA Systems for Remote and Geographically Dispersed
- Human-Machine Interface (HMI) Design Principles
- Alarm Management ISA-18.2 Standard
- Industrial Communication Protocols for Control
- Cybersecurity Basics for Industrial Control Systems
- Introduction to Safety Instrumented Systems (SIS)
- Safety Integrity Level (SIL) Defined
- Layers of Protection Analysis (LOPA)
- SIS vs. BPCS: Key Differences
- Common SIS Applications in Industrial Facilities
- Proof Testing and SIS Maintenance
- Troubleshooting Common Control Problems- Problem: Loop
- Using Process Trends to Diagnose Issues
- Course Summary (Slide 1 of 1 for Section 7)
- Assessment Instructions
- Process Controls for Industrial Facility Systems