Course Description

This Steam Turbine (ST) Unit Maintenance Refresher and Troubleshooting training is designed to reinforce and update the technical knowledge of engineers and technicians responsible for steam turbine operation and maintenance in power generation facilities. The program focuses on refreshing core turbine principles while addressing common maintenance challenges, operational abnormalities, and failure modes experienced during plant operation.

The course provides in-depth coverage of turbine components, lubrication and control systems, alignment, vibration, sealing systems, and auxiliary equipment. Emphasis is placed on preventive maintenance, condition monitoring, and systematic troubleshooting of mechanical, thermal, and operational issues. Practical case studies, failure analysis, and real operational scenarios are used to enhance diagnostic skills, reduce forced outages, and improve turbine reliability, efficiency, and service life.

Course Objectives

By the end of the training, participants will be able to:

Review steam turbine construction and operating principles

Understand turbine operating limits and protection systems

Apply best practices for preventive and corrective maintenance

Identify common steam turbine faults and degradation mechanisms

Diagnose vibration, lubrication, sealing, and performance issues

Improve turbine reliability, safety, and availability

Support effective outage planning and troubleshooting

Audience

This course is suitable for:

Steam Turbine Maintenance Engineers

Mechanical Engineers (Power Plants)

Operations Engineers and Shift Supervisors

Maintenance Technicians

O&M Personnel in Thermal and Combined-Cycle Power Plants

Prerequisites

Basic knowledge of steam turbine operation

Experience in power plant operations or mechanical maintenance

Familiarity with steam systems and rotating equipment (preferred)

Basic understanding of plant safety procedures

Course Content

Steam Turbine Fundamentals & Refresher

Steam turbine role in power generation

Types of steam turbines (impulse, reaction, condensing, backpressure)

Major components:

Rotor, blades, diaphragms, casing

Bearings and lubrication system

Glands and sealing systems

Operating principles and efficiency factors

Normal operating parameters and protection systems

Safety considerations and interlocks

Maintenance Practices & Degradation Mechanisms

Preventive vs predictive maintenance strategies

Bearing inspection and lubrication system maintenance

Alignment, clearances, and thermal expansion

Blade fouling, erosion, corrosion, and deposits

Seal and gland steam system maintenance

Valve maintenance (main stop valves, control valves)

Common degradation mechanisms:

Thermal fatigue

Vibration-induced damage

Oil contamination and degradation

Troubleshooting & Performance Improvement

Systematic troubleshooting methodology

Common steam turbine operational problems:

High vibration and noise

Bearing overheating

Oil system alarms and failures

Loss of efficiency and power output

Steam leakage and sealing issues

Interpretation of operating trends and alarms

Root cause analysis using real case studies

Best practices for start-up, shutdown, and load changes

Reliability improvement and life extension strategies

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