Technology
Leading the global power plant maintenance market with unrivaled technological capabilities
2026-07-29 22:08
Specialized Technology
Valve Safety Diagnosis
KEPCO KPS provides the highest-quality diagnosis, maintenance, and solution services for major safety-related valves, including Motor Operated Valves, MOV, and Air Operated Valves, AOV, installed in nuclear power plants and plant systems.
Based on many years of accumulated technologies and experience, the company supports stable periodic management and ensures valve operability.
Major Services
Motor Operated Valve, MOV, Engineering
- Review of system design criteria
- Analysis of valve vulnerable areas
- Analysis of valve voltage drop
- Analysis and evaluation of minimum required valve thrust and torque
- Analysis and evaluation of maximum allowable valve thrust and torque
- Analysis and resolution of thermal binding and pressure locking
- On-site valve diagnostic testing, analysis, and evaluation
- Valve maintenance consulting
- Verification of valve operability
Check Valve Engineering
- Thyristor, SCR: Measurement of forward conduction characteristics, forward blocking characteristics, reverse blocking characteristics, and temperature characteristics
- Power Diode: Measurement of forward conduction characteristics, reverse blocking characteristics, and temperature characteristics
- Power Transistor: Measurement of forward conduction characteristics, reverse blocking characteristics, and temperature characteristics
- Varistor: Withstand voltage characteristic test
- Passive Components: Characteristic testing of R, L, and C components, including impedance characteristics and frequency characteristics
Air Operated Valve, AOV, Engineering
- Analysis and evaluation of I/P operating integrity
- Analysis and evaluation of proper valve control conditions
- Analysis and evaluation of valve stem thrust
- Analysis and evaluation of valve positioner operating conditions
- Analysis and evaluation of valve packing load
- Analysis and evaluation of valve friction force
Engineering Consulting for Various Valves
- Consulting for system valves in nuclear power plants
- Consulting for system valves in hydro and thermal power plants
- Consulting related to various plant valves
Equipment
01
VOTES INFINITY , Universal Diagnostic System, VIPER20 (multipurpose valve diagnostic equipment by CRANE)
- Motor operated valve diagnosis
- Air operated valve diagnosis
- Check valve diagnosis
02
Quiklook (Teledyne)
- Motor operated valve diagnosis
03
VADA-1000(Valve Diagnostic Analizer, KEPCO KPS developed equipment)
- Valve internal leakage diagnosis
04
VADS-2000(Valve Analysis Diagnostic System, KEPCO KPS developed equipment)
- Motor operated valve diagnosis
- upgraded as multipurpose valve diagnostic equipment
05
MOVATS 3500 Equipment Signal Analysis Software
06
LIBERTY VOTES Equipment Signal Analysis Software
Major Projects
Safety Evaluation and Diagnosis Services for Power Operated Valves, MOV/AOV
- Kori Units 1, 2, 3, 4 / Shin-Kori Units 1, 2 / Hanbit Units 1, 2, 3, 4, 5, 6 / Hanul Units 1, 2, 3, 4, 5, 6 / Shin-Hanul Units 1, 2 / Wolsong Units 1, 2, 3, 4 / Shin-Wolsong Units 1, 2
- UAE BNPP Units 1, 2, 3, and 4
Safety Evaluation and Diagnosis Services for Check Valves
- Kori Unit 3, Hanbit Unit 1, Wolsong Unit 1
Technical Consulting
- Korea Hydro & Nuclear Power (KHNP) Headquarters
- KHNP nuclear power plants and Central Research Institute
- Korea Institute of Nuclear Safety (KINS)
- Korea Atomic Energy Research Institute (KAERI)
- Korea Institute of Machinery & Materials (KIMM)
- Ajou University and Chungnam National University, Departments of Mechanical Engineering, and others