Within our self-powered plant, the steam-water sampling points are distributed across various locations. The cooling water for the cooling system typically utilizes industrial water, which, due to its high levels of Ca2+ and Mg2+ content, tends to form CaCO3 and MgCO3 precipitates upon absorbing heat. This leads to scaling within the cooling system and its associated water pipes, diminishing the cooling efficiency and preventing the collection of representative steam-water samples. Additionally, scaling necessitates the timely removal by maintenance personnel, thereby increasing their workload. During the scaling removal process, the quality of the steam-water cannot be monitored. In severe cases, the cooling system may require replacement, which adds to maintenance costs. Furthermore, the direct discharge of the cooled water after heat absorption results in water resource waste and a loss of thermal energy at the power plant, while also increasing the plant's wastewater discharge, impacting environmental protection and the economic benefits of the power plant. 1. An overview of our plant includes 4 UG-75/3.82-M42 type circulating fluidized bed boilers paired with 3 N15-3.43/2 steam turbine units. These units were put into operation in 2004 and underwent a technical transformation in 2005, converting the steam-water sampling points from decentralized to centralized. The cooling water for the steam-water sampling cooling system was switched from industrial water to desalinated water. After over a year of operation, it has proven to be economically very beneficial.