Dehumidifiers are considered essential auxiliary equipment in nuclear power plants to enhance safety, efficiency, and the longevity of critical components. These devices are utilized in various sections of the plant, ensuring stable and long-lasting dry air conditions for essential processes.
Boric Acid Storage Tanks
Maintaining the correct concentration of enriched boric acid in nuclear power plants is crucial for reactor safety and efficiency. High humidity levels can lead to condensation inside boric acid tanks, causing dilution and compromising the reactor’s stability. A reliable dehumidifier helps preserve the effectiveness of boric acid, ensuring smooth reactor operation and long-term safety.
Changes in boric acid concentration due to uncontrolled humidity and condensation can also alter pH levels, increasing the risk of corrosion and reducing the acid's effectiveness. To prevent condensation in boric acid storage tanks, the use of dehumidifiers is a widely adopted practice in nuclear power plants.
For condensation prevention in boric acid tanks, which require a flow-based dehumidification system, Italian manufacturer TFT's AD series dehumidifiers are commonly preferred. The dehumidifier is connected near the manhole of the tank and operates at full capacity in manual mode. Regular acid sampling ensures that dilution has not occurred. Properly configured dehumidifiers, selected based on tank volume and airflow requirements, effectively prevent acid dilution and maintain system stability.
Corrosion Prevention During Maintenance and Long-Term Shutdowns
During long-term shutdowns (offload/shutdown periods), increased humidity in the turbine and generator areas can lead to micro-corrosion. Temporary dehumidifier usage during these periods plays a critical role in extending the lifespan and efficiency of these components.
For effective integration, the dehumidifier should receive a signal from the turbine’s main control panel to start producing dry air when the system shuts down. Additionally, a motorized damper should be installed to prevent backflow pressure from forcing humid air into the dehumidifier. To minimize micro-corrosion effects on turbine blades and maintain system integrity, dehumidifier integration should be carried out by experienced engineers.
We as NKT – Humidity Control Technologies, our expert engineering team provides the best industrial dehumidifier solutions for nuclear power plant in energy industry. We offer energy-efficient, high-performance solutions.
For more information, please contact us using the form below.