Performance Prediction Diagnostic Tester (TVAT)
for Turbine Valve Actuators

• Power supply: 380 ~ 480VAC
• Tested pressure: 5 ~ 250 bar (max.)
• Dimensions (mm): 1200 x 1100 x 1750 (H)

※ Specifications are subject to change without notice.

• The "Performance Prediction Diagnostic Tester (TVAT) for Turbine Valve Hydraulic Actuators" has been certified by the Ministry of Industry and Commerce of the Ministry of Commerce, Industry and Energy (NEP).
  It is an innovative and the world's first developed product for power plant maintenance and diagnostic technology which has gone through successful power plant field tests.
• "Turbine Valve Hydraulic Actuators" of thermal power plants and nuclear power plants are important core devices that are installed to control the amount of steam supplied to the turbine, which requires high durability and reliability. It has significantly improved the serious problem of current power generation maintenance technology, which couldn’t diagnose its performance without separating the hydraulic actuator from the system.
• This product has been favorably received by Wolsung nuclear and thermal power plant in Korea with successful the field test.
• "Performance Prediction Diagnostic Tester (TVAT) for Turbine Valve Hydraulic Actuators ", is a portable device which enables easy access to the plant sites. Without disassembly of the turbine valve hydraulic actuator from the system, it is possible to diagnose the performance and to prevent the power plant from being turned off. Therefore, usage of TVAT will allow benefits of saving enormous maintenance cost, shortening the maintenance period and determining the replacement period. Stable supply of power shall be expected due to increased reliability of maintenance and improved power plant operation efficiency.

Present Problems and Countermeasures for Performance Prediction
Diagnostic Tester for Turbine Valve Actuators

• No checkup and predictive diagnosis on performance without separating the body are possible.
• It is difficult to secure the reliability of the maintenance due to the inability to get a full inspection within the maintenance period.
• After the maintenance, it is not possible to test the performance of the power plant itself.
• Delays in maintenance and enormous maintenance and diagnostics costs.
• Actual preventive maintenance is not possible through pre-defect check.