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The Demolition and Reconstruction of Dushanzi Petrochemical Thermoelectric No. 4 Furnace XEPCC Contr

发布日期:2019-08-30 12:48:13 点击518

After 138 days of the demolition and reconstruction project of No. 4 furnace of dupetrochemical power station, which was contracted by Dushanzi branch of Xinjiang Electric Power Construction Co., LTD., passed the hydrostatic test successfully at a time, on the afternoon of September 8, 2018.  
The No. 4 boiler dismantled and rebuilt this time is a boiler that has been running for more than 10 years. On April 20, a flash fire occurred in boiler No. 4, causing serious deformation of the water wall and rigid beam of the boiler body, and deformation and damage of some auxiliary equipment and pipelines. Under this urgent situation, the thermal power plant gave the  maintenance task to the Dushanzi branch of XEPCC.
Considering that the construction area is very narrow between the central control room and two normally operating boilers, the equipment and pipelines running around should be protected during the construction process, and the high temperature of 40 to 50 degrees Celsius should be faced with. The Dushanzi branch company carefully studied and quickly determined the emergency repair plan and various construction measures. They draw the main technical forces and maintenance backbone to form a lean and efficient repair team, which holds a site coordination meeting every day and timely solve various problems encountered in the construction process.
During the period of construction, under the situation that the stress in the process of cutting which may cause harm to the workers due to the serious deformation of the water wall of  the boiler No. 4, and close dangerous check because of some of the incomplete fracture of the rigid beam from the joint should be done, Dushanzi branch took safe and appropriate construction method to finish the work to prevent the operators and equipment from damages. In the process of installation and welding of water-cooled wall,  although the operators face the high temperature construction environment of 40 to 50 degrees Celsius, meticulously ensure the construction quality. The passing rate of all welding joints ray is ≥97%, which is highly praised by the owners. Faced with the current situation of narrow operating space, the Dushanzi branch company organized the professional backbone of hoisting and carefully formulated the hoisting plan to ensure the orderly hoisting process.
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