Course Description

The Gas Turbine Generator (GTG) H2 Analyzer Calibration training course is a specialized technical program designed for maintenance and instrumentation professionals working in power generation facilities. Hydrogen is used as the primary coolant in large turbine generators due to its superior heat transfer properties, but it also poses significant safety risks. The analyzer continuously monitors hydrogen purity, air content, and carbon dioxide levels during both normal operation and gas changeover procedures. This course provides comprehensive instruction on the physical principles of thermal conductivity measurement, which is the fundamental operating principle behind most industrial hydrogen analyzers. Participants will gain experience in calibrating analyzers across three critical measurement ranges: 0-100% H2 in CO2 for purging, 0-100% Air in CO2 for air replacement, and 80-100% H2 in Air for normal operational monitoring. The training emphasizes proper calibration techniques using zero and span gases, troubleshooting common failures, and ensuring compliance with OEM specifications and safety standards. By the end of the course, technicians will be capable of independently performing accurate calibrations that directly impact generator efficiency, operational safety, and equipment longevity.

Course Objectives

Upon completion of this training, participants will be able to:

Understand the physical principle of thermal conductivity and its application in hydrogen measurement

Perform proper calibration procedures across all three operational ranges (H2 in CO2, Air in CO2, H2 in Air)

Correctly select and handle zero and span calibration gases

Configure and operate microprocessor-controlled analyzers

Identify and correct cross-interference issues in gas measurements

Diagnose common failures and perform preventive maintenance

Interpret display results and apply correction factors based on measurements from other gas analyzers

Follow safety protocols for hydrogen service equipment

Document calibration activities in compliance with industry standards

Audience

The course is designed for :

Service Personnel: Technicians responsible for maintaining and servicing hydrogen analyzers in power plants

Commissioning Engineers: Engineers involved in initial setup and startup of gas turbine generators

Configuring Engineers: Professionals who configure analyzer parameters and measurement ranges

Operators and Users: Plant operators who monitor hydrogen purity readings and perform routine calibration checks

Maintenance Supervisors: Personnel overseeing generator maintenance activities

Prerequisites

Basic Knowledge of Gas Analysis: Understanding of fundamental gas analysis principles and applications

General Electrical Engineering Knowledge: Familiarity with electrical circuits, signals (4-20 mA), and basic troubleshooting

Experience w

Course Content

Module 1: Principles of Operation

Physical principle of thermal conductivity

Thermal conductivities of different gases (H2, Air, CO2)

Thermistor technology and sensor operation

Comparison with other gas analyzer types

Module 2: Analyzer Hardware Architecture

Structure and function of microprocessor-controlled analyzers

Pneumatic structure of the analyzer

Pneumatic structure of the sample preparation system

Gas flow paths and pressure regulation

Module 3: Calibration Theory and Procedures

Understanding the three critical measurement ranges:

Zero gas calibration: CO2 and Air applications

Span gas calibration: High-purity H2 requirements

Two-point calibration methodology

Calibration frequency and acceptance criteria

Module 4: Software and Parameter Configuration

The software interface and its parameters

X-interference and types of correction

Correction via measurements of other gas analyzers

Setting alarm thresholds (low purity, high purity, purge mode)

Module 5: Applications and Special Considerations

Turbo Generator application specifics

Calculation and display of results

Gas changeover procedures (air to CO2 to H2 and reverse)

Environmental factors affecting readings

Module 6: Maintenance and Troubleshooting

Preventive maintenance procedures

Failure diagnosis and remedy

Sensor replacement and verification

Pneumatic leak detection and repair

Electronics troubleshooting

Module 7: Safety and Documentation

Hydrogen safety protocols

Lockout/tagout procedures

Calibration certificate preparation

Record keeping requirements

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