At 21:35 on November 16th, 2019, the maintenance team of WOM Company had the major node of simultaneous overhaul of Huancheng Unit#3 and Unit#4 in Huaibei, and the grid connection of Huancheng Unit#3 in Huaibei was a success, which marked the successful completion of overhaul work.

        Mr. Zhang Xuesuo, deputy general manager of WOM Company, went to the maintenance site at night to make a thorough deployment of all works before grid connection in order to ensure the smooth start of the whole set of unit#3. Adhering to the policy of "safety first, quality first", he made the following requirements: first, it is necessary to strictly control the process, arrange the personnel on duty for each discipline to strictly inspect the equipment, eliminate the defects and make the defect record handover; second, continue to do a good job in safety production, strictly implement the "two tickets, three systems" and the safety technical disclosure system; third, continue to carry forward the hard work and continuous struggle Strive for spirit, overcome difficulties, take responsibility, strengthen overall coordination of on-site disciplines, and complete a series of experimental work before grid connection.

        The grid connection is carried out orderly. During the whole process of turbine running up and generator grid connection, the vibration and temperature parameters of pumps and motors related to the circulating water system, oil system, vacuum system and water supply system of unit#3 are within the normal standard, and all system valves and vessels are tight without leakage. Subsequently, the tightness of MSV and control valve, oil injection, electric overspeed, mechanical overspeed and all tests of electrical system were qualified at one time, achieving zero defect one-time running up and grid connection success. It helps WOM Company to improve the core competitiveness of the enterprise, do a good job in quality projects, and establish the brand image of WOM Company.