Objective: 

- Understand the operating constraints of steam turbines.

- Determine the causes of performance losses.

- Identify operating anomalies and maintenance consequences.

 

Target group: 

- This course is aimed at operators, foremen, technicians or engineers in operations, maintenance or process departments.

- Prerequisites: Introduction to rotating machines or equivalent experience.

- 8 to 10 people maximum per session.

 

Contents :

09:00 - 10:30 
OPERATION 

- Performance: steam characteristics, steam flow, power, efficiency.

- Influence of parameters: steam inlet temperature and pressure, exhaust pressure, rotation speed.

- Operating limits: steam temperature, exhaust pressure.

 

   o Material creep at intake

   o Exhaust condensation

   o Maximum continuous speed and overspeed 

 

10:30 - 10:45 
Break

 

10:45 - 12:15 
OPERATION 

- Steam turbine start-up

     o Operating constraints, casing and rotor reheating, rotor turning,

     o Checking safety systems and alarms 

- Operating point and operating limits:

     o Regulation: steam flow technology and control

     o Operating range, critical speeds, overspeed

     o Lubrication: oil circuit

- Protection and safety

     o Steam system: inlet and outlet 

     o Overspeed protection devices: mechanical, electronic

     o Radial vibration and axial displacement: principle, safety logic, acceptable limits

     o Lubrication circuit

 

12:15 - 13:15 
Lunch

 

13:15 - 15:15 
MALFUNCTION ANALYSIS

- Causes of efficiency losses : 

     o Steam quality: low enthalpy, soluble and insoluble deposits

     o Abnormal pressure drops, clogged suction filter

     o Condensation on last stages 

- Behavioral anomalies :

     o Abnormal rotor vibration

     o Abnormal heating of bearings

     o Abnormal axial displacement of rotor  

 

15:15 - 15:45 
Break

 

15:45 - 17:00 
MAINTENANCE ELEMENTS

 

- Rotor inspection: non-destructive, dimensional and geometric checks

- Dynamic rotor balancing

- Periodic validation of safety devices

 

Implementation / working method :

Interactive, one-day, face-to-face course. Powerpoint support will be shared at the start of the course in both paper and digital formats.

A questionnaire will be sent to trainees prior to the course in order to adapt the course content to participants' expectations as far as possible.

A course evaluation questionnaire will be distributed to participants at the end of the course.

 

Course language and materials
French