The document discusses condition monitoring for steam turbines. It outlines several key points: 1. Condition monitoring methods for steam turbines include monitoring steam conditions and flow rates, vibration, lubrication conditions, bearing condition, rotor speed, noise levels, and auxiliary system operation. 2. Common failure modes of steam turbines include bearing failures from loss of lubrication or contamination, blade failures from foreign object damage or fatigue, and valve failures from solid particle damage or erosion. 3. Condition monitoring is important for identifying faults early to allow corrective action to save assets and avoid production losses. Monitoring methods help ascertain equipment condition while failure modes can be prevented through monitoring and preventive maintenance.

1. Condition Monitoring
for Steam Turbines
Presented by
Engr. Dr. Abdul Rehman Abbasi
Email: qurman2000@gmail.com
June 26, 2014

2. Motivation to Learn About this Topic
• Early (Just-In-time) Detection of
Faults/Abnormalities
• Corrective Action in Time to Save
Valuable Assets and Avoid Production
Losses

3. What we are going to discuss here:
1. (Steam) Turbine Operation-A Reminder
2. Identify the Monitoring Methods
3. Identify the Failure Modes

4. What does a turbine actually do?
• Steam in and Steam Out…..
• The steam comes in under a certain set of
pressure, temperature, and flow conditions;
and goes out under another set of pressure
temperature and flow conditions
• The change in steam conditions occurs
because we are using some of the energy in
the steam to rotate the turbine rotor

5. Condition Monitoring Methods
• Some common methods are:
– Steam Conditions and Flow Rates
– Vibration
– Lubrication Conditions
– Bearing Condition
– Rotor Speed
– Noise Level
– Auxiliary System Operation
Operating Limit is the Key

6. Selection of Vibration Measurement Points

7. Vibration Analysis: Standards

8. Probable Failure Modes
• Bearing failures from:
• Loss of lubrication
• Lubrication contamination
• Excessive load
• Overspeed protection
• Blade failures:
• Foreign object damage
• Erosion
• Fatigue
• Valve failures:
• Solid particle damage
• Erosion
• Fatigue
• Steam seal failures:
• Wear
• Erosion
• Corrosion
• Governor/Regulation failure
• Insulation failure
• Coupling failures
• Hydraulic system failure • Alignment Changes

9. Failure Modes

10. Failure Modes

11. Conclusion
• Condition monitoring of steam turbine is
critical to identify faults and provide remedies
• Condition monitoring methods are there to
ascertain equipment condition
• Failure modes could be prevented by
appropriate condition monitoring and
preventive measures