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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Instrumentation Calculators

Measurement Uncertainty Calculator: Calculate Combined and Expanded Uncertainty Using GUM

Measurement Uncertainty Calculator - GUM Method #muc-wrap, #muc-wrap * { box-sizing: border-box !important; } #muc-outer { background: #eef2f8 !important; background-image: linear-gradient(rgba(15,23,42,0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(15,23,42,0.045)...
SIS/ESD

Shutdown Philosophy: Engineering Documentation for Process Safety and Emergency Shutdown Systems

Table of ContentsWhat is Shutdown Philosophy and Why is it Important? What Is a Shutdown Philosophy in Process Safety?Why Is Shutdown Philosophy Important in Engineering Projects?What Is the Shutdown Level Hierarchy?How Is a Shutdown Philosophy Developed?What Should a Shutdown Philosophy Document Include?Shutdown Philosophy and Cause...
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Instrumentation Questions

Quiz: Understanding LEL (Lower Explosive Limit) in Gas Detection

Discover the fundamentals of LEL (Lower Explosive Limit) gas detection through this comprehensive quiz....
Instrumentation Tools

Pressure Safety Relief Valve Basic Sizing Tool – Liquid Applications

Table of ContentsSafety Valve Sizing - Liquid ServiceFormula and Calculation for Pressure Safety Valve...
PLC

Retentive Timer On (RTO) in PLC Programming

Table of ContentsWhat is Retentive Timer On (RTO)?Components of an RTO TimerHow the RTO...
Industrial Automation

Steam Turbine Interlocks and Associated Protection Systems

Table of ContentsTurbine Trip Interlocks OverviewSteam Turbine Interlock Scenarios and Management  This document outlines critical...
PLC

Understanding Remote I/O in PLC Control Systems

Table of ContentsWhat is I/O in the PLC control System?What is Remote I/O?How Remote...
Checklist

Checklist for Conducting a Running Inspection of a Control Valve in a Process Area

Table of ContentsPreparationSafety PrecautionsWork Permit ProcessPart 1: Control Valve ActuatorPart 2: Control Valve PositionerPart...
PLC

Understanding ON Delay and OFF Delay Timers in PLC Programming

Table of ContentsON Delay Timer (TON)Ladder Diagram - ON Delay TimerProcess Scenario Example -...
Instrumentation Questions

Quiz on Control Valve Positioners

Control valve positioners are essential components in the field of instrumentation and control engineering....
Instrumentation Calculators

Frequency(Hz) to 4 to 20 mA Signal Conversion Calculator

Table of ContentsWhat is Frequency to Analog 4 to 20 mA Conversion?Frequency to Analog...
Installation Procedure

Best Practices for Impulse Tubing Installation

Table of ContentsSection 1: Material SelectionSection 2: Tubing Length and RoutingSection 3: Support and...
Instrumentation Calculators

Control Valve Kv to Cv Conversion Calculator

Table of ContentsControl Valve Kv to Cv Conversion CalculatorControl Valve KV and CV Definitions:Formula...
Checklist

Checklist: Preventive Maintenance Procedure for Closed Tank Wet Leg Level Measurement

Table of Contents Purpose of this ProcedureScope of this ProcedureDefinitionsResponsibilitiesSafety PrecautionsTools and Equipments Required for...
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Instrumentation Calculators

Measurement Uncertainty Calculator: Calculate Combined and Expanded Uncertainty Using GUM

Measurement Uncertainty Calculator - GUM Method #muc-wrap, #muc-wrap * { box-sizing: border-box !important;...
SIS/ESD

Shutdown Philosophy: Engineering Documentation for Process Safety and Emergency Shutdown Systems

Table of ContentsWhat is Shutdown Philosophy and Why is it Important? What Is a Shutdown...
Procedures

Hydraulic System Pressure Switch Troubleshooting: Step by Step Safe Procedure

Table of ContentsWhat Is a Hydraulic Pressure Switch and How Does It Work?Hydraulic Pressure...
Instrumentation Questions

Advanced PLC Interlock Troubleshooting Quiz for Process Industries | 25 Practical PLC Diagnostics Questions for Instrumentation and Automation Engineers

Why PLC Interlock Troubleshooting Matters in Modern Process Industries  Modern process industries depend on reliable...