Legacy Jaquet T401 replaced with a 2oo3 high-integrity Overspeed Detection System for reliable turbine protection.
Industry
Power Generation
Client / End User
Nam Theun 2 Power Company Limited
Country
Laos
Solution
Turbomachinery Control System
Istec SpeedSys 200 · 2-out-of-3 (2oo3) Voting Architecture · SCADA & Engineering Workstation Integration
Scope of Work
- Engineering, supply, and installation of new ODS panel to replace legacy Jaquet T401 system
- Configuration of Istec SpeedSys 200 modules for accurate turbine speed measurement and protection
- Implementation of redundant 2-out-of-3 (2oo3) voting structure for high-reliability overspeed protection
- Integration of ODS panel with existing SCADA and Engineering Workstation (EWS) systems
- Execution of functional testing, trip simulation, and system performance verification
- Commissioning support for smooth system transition with minimal disruption
Results
- Improved reliability and accuracy of turbine overspeed protection
- Enhanced safety through high-integrity 2oo3 redundancy structure
- Increased system maintainability compared to legacy solution
- Seamless integration with existing control and monitoring systems
- Minimal disruption during upgrade and commissioning
500+
Installed bases
30+
Years of engineering