Mechanical Chemical Engineering SERVICE & MAINTENANCE Electrical Instrumentation & Control O&M Service Domestic Track Records Main Client KHNP Project Name Hanbit NPP Water Treatment System #1~6 950MW*2/ 1000MW*4 Wolsong NPP Water Treatment System #1~6 700MW*4, 1000MW*2 Oseong CCPP GT 183MW*3, ST 284MW*1 Delivery Year 2019 ~ Present 2014~2019 2025 ~ Supplier Information • Optimal Energy Service Co., Ltd. Product Description: Leveraging state-of-the-art equipment and specialized personnel, we strive to optimize the operation and maintenance of power generation facilities. OES provides O&M services for nuclear power plant water treatment systems and TPPS. Specification: • American Society of Mechanical Engineers(ASME) • Korea Electric Power Industry Code(KEPIC) • American Society for Testing & Materials(ASTM) • American Welding Society(AWS) Domestic Track Records Main Client KHNP Other Company Project Name NPP Saeul NPP #3 Maintenance Supplier Information • Geumhwa Water Treatment Service Co., Ltd. O&M (Operation & Maintenance) Product Description: With proven O&M expertise in Korea’s nuclear power sector, GEUMHWA is expanding globally—ranging from industrial wastewater treatment in Vietnam to largescale sewage O&M projects—contributing to clients’ environmental policies and sustainable growth. Specification: • Continuously detects valve leakage in high-pressure, high-temperature systems using AE (Acoustic Emission) technology. • Piezoelectric sensors capture both low and highfrequency elastic waves and transmit them to the analysis system. • Features include real-time leak monitoring, 3D valve map display, 2-year data logging per valve, and early leak detection to prevent accidents and reduce maintenance costs. • Applicable to various valve types such as control, shutoff, safety, and check valves. Overseas Track Records Client (Country) UAE Project Name Barakah NPP #1~4 190 SERVICE & MAINTENANCE
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