HomeAuthorsPosts by Sundareswaran Iyalunaidu

Sundareswaran Iyalunaidu

With over 24 years of dedicated experience, I am a seasoned professional specializing in the commissioning, maintenance, and installation of Electrical, Instrumentation and Control systems. My expertise extends across a spectrum of industries, including Power stations, Oil and Gas, Aluminium, Utilities, Steel and Continuous process industries. Tweet me @sundareshinfohe
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Control Valve

Control Valve Passing Even When Fully Closed: Causes, Symptoms, Troubleshooting and Solutions

Table of ContentsUnderstanding Control Valve Passing and Why It HappensWhat Does It Mean When a Control Valve Is Passing?How a Control Valve Should Close Under Normal ConditionsCommon Symptoms of a Passing Control ValveMajor Causes of Control Valve PassingControl Valve Shutoff Performance by Valve TypeHow...
Instrumentation Calculators

Instrument Range Calculator | Calculate Span, Rangeability, Turndown Ratio & Calibration Range

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Instrumentation Calculators

Valve Actuator Sizing Calculator – Complete Engineering Guide for Torque, Safety Factor & Gear Ratio Selection

Valve Actuator...
Engineering Standards

IEC 61511 Safety Bypass And Override in Instrumentation and Control System Maintenance

Table of ContentsIEC 61511 Safety Bypass and OverrideUnderstanding Safety Bypass And Override In A...
Instrumentation Questions

PLC Programming Basics Quiz for Automation Engineers – Process Industries

Why Automation Engineers in Process Industries Should Master PLC Programming Basics This short, advanced quiz...
PLC

PLC Data Types Every Automation Engineer Must Know to Avoid Costly Programming Errors

Table of ContentsWhy PLC Data Types Matter in Real-World AutomationCommon PLC Programming Problems Caused...
SAT Activities

Control Valve Site Acceptance Test (SAT) Procedure – Step-by-Step Field Guide

Table of ContentsWhy a Thorough Control Valve  SAT MattersSAT Purpose and ScopePreparatory Activities -...
Instrumentation Calculators

Advanced Venturi Tube Flow Calculator – Formula, Working & Applications

Advanced Venturi...
Instrumentation Questions

Control Valve Hunting Troubleshooting – Advanced MCQ Quiz

What Is Control Valve Hunting? Control valve hunting is a common and expensive problem in...
Control Valve

ESDV vs EBDV – Fail Close vs Fail Open | Emergency Shutdown Valve vs Emergency Blowdown Valve

Table of ContentsEmergency Valves in Process Safety SystemsWhat is an ESDV (Emergency Shutdown Valve)?What...
PLC

PLC Permissive Logic Troubleshooting Procedure for Instrumentation Engineers

Table of ContentsWhy PLC Permissive Logic is Critical in Process PlantsWhat is PLC Permissive...
Engineering

JB Grouping in Industrial Automation and Instrumentation – Complete Practical Guide for EPC, Site and Commissioning Engineers

Table of ContentsJB Grouping in Process Industry Instrumentation SystemsWhat Is JB Grouping in Instrumentation...
Instrumentation Calculators

PLC Raw Count Calculator: Comparison with PLC Internal Scaling Blocks, Real-World Use Cases and Practical Benefits

Advanced PLC Raw Count Calculator @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700;800&display=swap'); :root{ --brand-500: #0b3c5d; --brand-600: #083047; --muted:...
Instrumentation Questions

Gas Turbine Start Interlock & Trip Test Procedure – Advanced Quiz

Why Gas Turbine Startup Interlocks and Trips are Critical Starting up a gas turbine is...
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Control Valve

Control Valve Passing Even When Fully Closed: Causes, Symptoms, Troubleshooting and Solutions

Table of ContentsUnderstanding Control Valve Passing and Why It HappensWhat Does It Mean When...
Instrumentation Calculators

Instrument Range Calculator | Calculate Span, Rangeability, Turndown Ratio & Calibration Range

<!-- Google Fonts (safe to keep as a inside a WordPress "Custom HTML"...
Communication

Profibus PA Communication Problems: Causes, Symptoms and Troubleshooting Guide

Table of ContentsOverview of Profibus PA Communication Challenges What is Profibus PA Communication?Definition of Profibus...
Engineering

FAT vs SAT vs SIT: Three Critical Tests That Determine Whether Your Plant Is Truly Ready for Startup

Table of ContentsIntroductionPurpose of Factory Acceptance TestingFactory Acceptance Test ObjectivesFactory Acceptance Test ObjectivesPLC FAT...