Home

etaeval is an engineering company offerings its services mainly in the field of hydroelectric power plants and water supplies. We inspect efficiency of turbines, pumps, or plants using state of the art instruments and techniques. We have access to CFD and system simulation tools to enhance our services.

Our services include:

  • Efficiencymeasurements in hydroelectric power plants and water supplies
  • Transient simulations and measurements in hydroelectric power plants and water supplies
  • Expert opinion to measurements conducted by manufacturers or third-party companies

Utilities may benefit from our independence in their measuring tasks.


In our services we refer to the following standards:

  • IEC Standard 60041: Field acceptance tests to determine the hydraulic performance of hydraulic turbines, storage pumps and pump-turbines
  • IEC Standard 60193: Hydraulic turbines, storage pumps and pump-turbines – Model acceptance tests
  • IEC Standard 60545: Guide for commissioning, operation and maintenance of hydraulic turbines
  • IEC Standard 60609 Part 1 – 2: Hydraulic turbines, storage pumps and of pump-turbines – Cavitation pitting evaluation
  • IEC Standard 60805: Guide for commissioning, operation and maintenance of storage pumps and of pump-turbines operating as pumps
  • IEC Standard 60994: Guide for field measurement of vibrations and pulsations in hydraulic machines (turbines, storage pumps and pump-turbines)
  • IEC Standard 61364: Nomenclature for hydroelectric powerplant machinery
  • IEC Standard 61366 Part 1 – 7: Hydraulic turbines, storage pumps and of pump-turbines – Tendering documents
  • IEC Standard 62006: Hydraulic machines – Acceptance tests of small hydroelectric installations
  • IEC Standard 62097: Hydraulic machines, radial and axial – Performance conversion method from model to prototype
  • IEC Standard 62256: Hydraulic turbines, storage pumps and pump-turbines – Rehabilitation and performance improvement