【HaiChuan’s Best Practices】The use of new laser rust-removal technology for tank surfaces helps to reduce safety risks and increase construction speed

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On February 19, 2024, the Maoming Petrochemical upgrading project commenced the rust removal work on the outer surface of the fire water tank in Loop 1 Water Treatment Plant V102. An operator held a spray gun and moved along the outer wall of the tank, wiping away rust spots wherever he went. Previously, the V101 tank had its rust removal completed on January 21. Both rust removal operations utilized the new green construction technology of laser rust removal, effectively solving the problem of dust generation at the construction site. Common methods for rust removal from large water tanks include chemical rust removal and sandblasting; these methods involve risks such as hot work, as well as environmental issues related to wastewater and dust treatment. Laser rust removal enables immediate drying and prevents rust from reappearing; the handheld laser gun is equipped with a safety knob to effectively reduce risks. Laser rust removal is a non-abrasive, contact-free, and heat-free method for removing rust; it does not damage the substrate, causes no secondary pollution, and effectively eliminates environmental hazards. In addition, the efficiency of sandblasting for rust removal is 10 square meters per hour, while that of laser rust removal is 14 square meters per hour, **increasing the construction speed. To ensure the safety and effectiveness of laser rust removal, the project management department of Maoming Petrochemical and the contractor Wujian Company thoroughly analyzed the potential risks associated with the construction process. Through numerous investigations, on-site inspections, and tests, they developed a detailed construction plan. At the same time, they strictly ensure safety during the construction process, implement the requirements of the \"1+5+2\" key work plan, and assign personnel to carry out supervision and inspection around the clock, throughout the entire process, and in all aspects, to guarantee the high-quality completion of the laser rust removal work. “Green construction isn’t as unattainable as one might think; as long as we keep environmental protection in mind, we can always find ways to solve problems. ”Zeng Guoxing, the project manager of Wu Jian Company responsible for on-site construction, said.