How lubricating oils and hydraulic fluids work in principle

• Viscosity and lubricant film formation
• Influence of speed, temperature and pressure

Mineral oils and synthetic oils – the difference

• Properties of mineral oils and their areas of application
• Advantages and disadvantages of synthetic oils in mobile applications
• Mineral oils or bio-oils: what is used where in hydropower plants and why

Lubricating oils for water turbines

• General tasks and requirements
• Bearing and gear lubrication
• Turbine types, their specific requirements and lubricating oil requirements
• Examples of oil types used

Hydraulic fluids for hydropower plants

• Tasks: control system, periphery (e.g. computer systems)
• General requirements for hydraulic fluids in hydropower plants
• Mineral and bio hydraulic fluids
• Examples of oil types used

Gear oils for hydropower plants

• When, where required: examples
• Tasks and requirements for gear oils
• Mineral (and bio) gear oils
• Examples of oil types used

Aging factors of lubricants

• Factors: base oil aging, additive consumption, impurities
• Causes and consequences of oil oxidation
• Additive consumption: antioxidants, wear protection, …

Oil purity and filtration

• Oil purity in practice: purity requirements for lubricating and hydraulic fluids in hydropower plants
• Basic principles and important characteristics of main and bypass filtration
• Effective removal of water and aging products (varnish)

Oil monitoring

• Application and oil type related aging parameters
• Sampling and scope of analysis
• Analytical methods and their significance
• Information on the oil sample
• Laboratory report

Evaluation of oil analyses based on examples

• Limit values and trend
• Consideration of the fresh oil reference
• Practical examples from the OELCHECK pool
• Group work
• Oil analyses for special problems – practical examples