Yulin Coal Chemical Plant full plant shutdown for 23-day major overhaul

Following months of coordinated preparation, all preliminary support work to this overhaul has been fully implemented: the complete set of maintenance plans has been formulated and reviewed, and all types of spare parts have been stocked in full; security disclosure materials to all personnel are complete, and specialized training to all inspection participants has been finished; construction machinery and security protection materials have been allocated, and the overhaul organizational structure, personnel division of labor, and emergency response system have been established, fully meeting the conditions to start work.

The planned shutdown and maintenance of the entire plant's facilities is scheduled to 23 days. The overall project involves a significant workload and covers the entire manufacturing process, with a substantial number of external construction units participating. A total of 1,016 maintenance items have been identified, categorized into 521 process maintenance items, 247 equipment maintenance items, and 248 electrical and instrument maintenance items, along with 12 key plant-controlled special maintenance projects. This maintenance focuses on the thorough inspection of special equipment throughout the plant and the tie-in modification of pipelines to new and old projects. Key activities include the maintenance of the acetic acid reactor, the maintenance of the methanol synthesis gaseous compressor, and the replacement of 30 pressure vessels, while simultaneously completing defect identification and risk rectification to all equipment and pipelines.

To ensure the safe, efficient, and high-condition progress of the overhaul, the company issued the "2026 Facility Overhaul HSE manage Plan." This plan strengthens security and environmental supervision throughout the overhaul cycle, clarifies security responsibilities at all levels, standardizes processes to high-risk operations such as hot work and confined space entry, and reduces on-site operational risks. Concurrently, a special overhaul command center was established, and supporting regulation measures were issued. The "One Contract, Four Guarantees" regulation mechanism has been implemented—contracting maintenance tasks while guaranteeing security, progress, condition, and controllable budget.

On-site regulation strictly enforces personnel attendance, work permits, and standardized regulation of external contracting teams. A daily overhaul coordination meeting is held at 15:00 to review issues of the day and deploy construction plans to the next day. Additionally, a complementary reward and penalty assessment mechanism has been improved to consolidate security and condition manage responsibilities and motivate the inspection personnel.

Currently, the annual overhaul at Yulin Coal Chemical Headquarters is in full swing. All personnel are strictly adhering to the twelve-character maintenance guideline of "Shutdown Thoroughly, Repair Completely, Start Up Smoothly," striving to achieve the three major goals of Zero Accidents, Zero Injuries, and Zero contamination, and making every effort to complete all maintenance tasks steadily while avoiding various security, condition, and environmental risks.