en.Wedoany.com Reported - On May 18, the steam blowing work for Unit 1 of the China Coal Guangyuan Coal-fired Power Project was completed with high standards and high quality. This marks that all impurities in the boiler's main and reheat steam-water system pipelines have been cleared to meet standards, meeting the conditions for safely supplying steam to the steam turbine, and laying a solid foundation for the subsequent full system startup, grid connection for power generation, and the full-chain commissioning of the integrated project.
This steam blowing operation commenced on May 12 and involved a continuous 168-hour effort, utilizing a phased mature process of "stabilized pressure purging + depressurized target shooting." Based on the layout characteristics, the project team coordinated the linkage of systems including coal storage and transportation, boiler combustion, and steam-water circulation. Facing engineering challenges such as tight schedules, multi-disciplinary cross-operations, and complex system interfaces, all participating construction units collaborated closely, ensuring the smooth progress of key milestones with professional competence and a robust work ethic.
Prior to the steam blowing, the project team strictly followed electric power construction specifications to prepare a specialized steam blowing construction plan and emergency response plan. Key procedures such as temporary pipeline layout, silencer device commissioning, and precise target plate setup were completed with priority. Technical briefings, drawing reviews, and safety hazard inspections were carried out item by item to ensure tight system installation and stable operation. During the steam blowing period, 24-hour uninterrupted duty was implemented. Technical personnel monitored core parameters such as main steam pressure, reheat steam temperature, and flow rate in real-time, dynamically optimizing purging conditions to ensure the blowing coefficient remained stably above 1.0 throughout the process, effectively removing residues such as oxide scale, welding slag, and debris from inside the pipelines. A total of 182 minutes of stabilized pressure purging and 37 depressurized purging cycles were accumulated. Verified according to the "DL/T 5210.6-2019 Specification for Quality Acceptance of Electric Power Construction," and through joint multi-party acceptance, the aluminum target plates showed no pit marks larger than 0.8 mm, and the number of pit marks in the 0.2 to 0.8 mm range was controlled within the standard range. All indicators were superior to national acceptance specifications, achieving a 100% steam blowing qualification rate.
The successful completion of the steam blowing work for Unit 1 marks a crucial step towards the unit's commissioning target and demonstrates the project team's spirit of overcoming difficulties. Moving forward, Guangyuan Energy Company will uphold the construction philosophy of striving for excellence, steadily advancing subsequent commissioning and full system startup work, and making every effort to ensure the unit is put into operation on schedule with high standards.
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