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  • Final Elements
    • Control Valves
    • On-Off Valves
  • Field Instruments
    • Flow
    • Pressure
    • Level
    • Temperature
    • Process Analyzers
  • Control System
  • Functional Safety
  • Cyber Security
  • Risk Assessment
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  • Personal Growth
  • Process Knowledge
  • Back To Basics
  • Quiz
  • Instrumentation Q & A
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Resources

Functional Acceptance Test (FAT) Check List

Thermowells – FAT Check List

Thermowells – FAT Check List

Formats,Resources
Thermowell – Factory Acceptance Test (FAT) Checklist Factory Acceptance Test (FAT) Report...
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pH and Conductivity Analysers – FAT Check List

pH and Conductivity Analysers – FAT Check List

Formats,Resources
Orifice Plates and Restriction Orifice – FAT Check List

Orifice Plates and Restriction Orifice – FAT Check List

Formats,Resources
Displacer/Radar Level Transmitter with a Level Bridle – FAT Check List

Displacer/Radar Level Transmitter with a Level Bridle – FAT Check List

Formats,Resources
Analyzer House with HVAC – FAT Check List

Analyzer House with HVAC – FAT Check List

Formats,Resources
Analyser with Sampling system and Cabinet – FAT Check List

Analyser with Sampling system and Cabinet – FAT Check List

Formats,Resources
Flow Metering Skids – FAT Check List

Flow Metering Skids – FAT Check List

Formats,Resources

Instrumentation Deliverables Formats

Instrument Datasheet – Comprehensive I&C Engineering Checklists for EPC Projects

Instrument Datasheet – Comprehensive I&C Engineering Checklists for EPC Projects

Resources,Tools and Calculators
Universal Instrument Datasheet — Final Self-Verification Checklist Universal Instrument Datasheet —...
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Technical Bid Evaluation (TBE) – Comprehensive I&C Engineering Checklists for EPC Projects

Technical Bid Evaluation (TBE) – Comprehensive I&C Engineering Checklists for EPC Projects

Resources
Material Requisition (MR) – Comprehensive I&C Engineering Checklists for EPC Projects

Material Requisition (MR) – Comprehensive I&C Engineering Checklists for EPC Projects

Resources
Functional Logic Diagrams – Comprehensive I&C Engineering Checklists for EPC Projects

Functional Logic Diagrams – Comprehensive I&C Engineering Checklists for EPC Projects

Resources
Installation Detail Drawings – Comprehensive I&C Engineering Checklists for EPC Projects

Installation Detail Drawings – Comprehensive I&C Engineering Checklists for EPC Projects

Resources
Loop Diagrams – Comprehensive I&C Engineering Checklists for EPC Projects

Loop Diagrams – Comprehensive I&C Engineering Checklists for EPC Projects

Resources
Hook-Up Drawings (Pneumatic/Electric) – Comprehensive I&C Engineering Checklists for EPC Projects

Hook-Up Drawings (Pneumatic/Electric) – Comprehensive I&C Engineering Checklists for EPC Projects

Resources

Vendor Documents Review Guilines

A Interactive Guide for Instrument Engineer on Reviewing Orifice Plate Sizing Calculations

A Interactive Guide for Instrument Engineer on Reviewing Orifice Plate Sizing Calculations

Field Instrumentation,FLow,Resources
Interactive SPA: EPC Guide to Orifice Plate Sizing Review 5-Step EPC Guide to Orifice Plate Sizing...
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How to Review Orifice Plate Sizing received from Manufacturers: An Instrumentation Engineer Guide

How to Review Orifice Plate Sizing received from Manufacturers: An Instrumentation Engineer Guide

Field Instrumentation,FLow,Resources
How to review Anti-Surge Control Valve Designs from Compressor Vendor – Guide for a EPC/Engineering Contractor

How to review Anti-Surge Control Valve Designs from Compressor Vendor – Guide for a EPC/Engineering Contractor

Resources
Dont Miss this During Review: An Interactive Anti-Surge Valve Checklist for Engineering Consultants

Dont Miss this During Review: An Interactive Anti-Surge Valve Checklist for Engineering Consultants

Resources

Other Formats

Format for Instrument Index document in oil and gas sector

Format for Instrument Index document in oil and gas sector

Resources
A comprehensive format and guide for an Instrument Index document, commonly implemented using a...
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Format for IO List (DCS/IPS/FGS) document in oil and gas sector

Format for IO List (DCS/IPS/FGS) document in oil and gas sector

Resources
Format for Alarm and Trip Settings document in oil and gas sector

Format for Alarm and Trip Settings document in oil and gas sector

Resources
SIL Workshop Preparation: The Complete Checklist for Instrument Engineers

SIL Workshop Preparation: The Complete Checklist for Instrument Engineers

Resources
The Ultimate HAZOP Preparation Checklist for Instrument Engineers (2025)

The Ultimate HAZOP Preparation Checklist for Instrument Engineers (2025)

Resources
Construction Hazard Identification (HAZID) Workshop Format

Construction Hazard Identification (HAZID) Workshop Format

HAZOP Risk Assessment,Resources
Standard Bow-tie workshop worksheet format

Standard Bow-tie workshop worksheet format

HAZOP Risk Assessment,Resources

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Welcome to InstruNexus, a specialized platform created by engineers with real-world experience in the oil and gas industry.

We are a core team of professionals, each bringing over 20 years of expertise in engineering, design, instrumentation, control systems, and project execution across upstream, midstream, and downstream oil and gas sectors.

Our work is guided by a respected industry veteran with over 40 years of leadership experience, whose insights and mentorship ensure technical excellence, project reliability, and client satisfaction in everything we do.

At InstruNexus, our goal is to provide practical knowledge, engineering tools, training resources, and expert insights to support engineers, technical professionals, and students in advancing their careers and improving project outcomes.

Whether you’re developing a brownfield project, optimizing plant instrumentation, or preparing for interviews, we are your go-to engineering knowledge partner.

  • Final Elements
    • Control Valves
    • On-Off Valves
  • Field Instruments
    • Flow
    • Pressure
    • Level
    • Temperature
    • Process Analyzers
  • Control System
  • Functional Safety
  • Cyber Security
  • Risk Assessment
  • Resources
  • Personal Growth
  • Process Knowledge
  • Back To Basics
  • Quiz
  • Instrumentation Q & A
  • Tools and Calculators
  • Games
  • Contact Us
  • Downloads
  • Final Elements
    • Control Valves
    • On-Off Valves
  • Field Instruments
    • Flow
    • Pressure
    • Level
    • Temperature
    • Process Analyzers
  • Control System
  • Functional Safety
  • Cyber Security
  • Risk Assessment
  • Resources
  • Personal Growth
  • Process Knowledge
  • Back To Basics
  • Quiz
  • Instrumentation Q & A
  • Tools and Calculators
  • Games
  • Contact Us
  • Downloads
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