In our self-powered plant, water and steam sampling points are distributed across various locations. The cooling water for the cooling system typically uses industrial water, which, due to its high Ca2+ and Mg2+ content, is prone to forming CaCO3 and MgCO3 precipitates after absorbing heat. This leads to scaling in the cooling system and its associated cooling water pipes, affecting the cooling efficiency and making it impossible to obtain representative water and steam samples. Additionally, scaling necessitates the timely removal of scale by maintenance personnel, which increases their workload. During scale removal, the quality of the water and steam cannot be monitored. In severe cases, the cooling system may need to be upgraded, adding to maintenance costs. Moreover, the direct discharge of the cooled water after absorption results in water waste and a loss of thermal energy at the power plant, while also increasing the amount of wastewater discharged, impacting environmental protection and the plant's economic benefits. In summary, our plant operates 4 UG-75/3.82-M42 type circulating fluidized bed boilers paired with 3 N15-3.43/2 steam turbine units, which were put into operation in 2004 and underwent a technical transformation in 2005. The water and steam sampling points were changed from decentralized to centralized sampling, and the cooling water for the sampling cooling system was switched from industrial water to desalinated water. After more than a year of operation, the economic benefits have proven to be very substantial.