【History of Haichuan Pipelines】China’s first long-distance methanol pipeline project

【HaiChuan Expands Horizons】The main section of China’s first long-distance methanol pipeline project has been completed https://bbs.hcbbs.com/thread-3021996-1-1.html (Source: Huahai Chuanliu – HaiChuan Chemical Forum)

【History of Haichuan Pipes】The summary post is being updated continuously; learn about the development process of various pipes at https://bbs.hcbbs.com/thread-3068575-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Forum)

According to China Petroleum Network (reporter Li Cheng, correspondent Zhao Zhibin), on August 4, the pipeline project as part of the China Coal Methanol technology upgrade project, constructed by the Pipeline Bureau, saw 51.4 kilometers of piping welded and 4,392 joints treated for corrosion prevention. The employees involved in the project worked hard despite the scorching heat to advance the construction of the country’s first long-distance methanol pipeline. 　　The pipeline project supporting the China Coal Methanol technology upgrade project is the first long-distance methanol pipeline project in the country. 　　The project management team leverages the advantages of EPC’s end-to-end management approach to establish a work system suited for integrated management. It focuses on enhancing the proper coordination and integration of contracting, design, procurement, and construction processes, ensuring that all elements are interconnected, thereby reducing resource waste and improving efficiency. 　　On July 20, the first pressure test phase of the project was successful. The length of the pressure testing section is 24.15 kilometers, with a height difference of 35.44 meters. The project team took various measures to address these challenges; it conducted a detailed analysis of issues such as difficulties in finding water sources and water scarcity during construction, sought to take control of the construction process, and made every effort to eliminate factors that could affect the construction work ； Pay close attention to quality and safety, adopt a \"chart-based management approach\" to dynamically identify and control on-site risks ； Strengthen supervision and inspection by establishing a daily inspection mechanism, thereby creating a regulatory system that covers the entire process and all aspects, to effectively ensure project quality. 　　To date, the project has successfully completed key tasks such as ball passing for line inspection, installation of temporary pressure testing facilities, water injection, pressure increase, pressure stabilization, pressure reduction, and water drainage. Upon verification by the local relevant authorities, the project owner, and the supervisor, the entire pressure testing process was found to be satisfactory, laying the foundation for early completion of the project.

China’s first MTO methanol long-distance pipeline was successfully put into operation recently. https://www.chinapipe.net China Pipeline Business Network 【Print】2021-05-13 Views/Shares: At 8 p.m. on May 10, as MTO methanol was transported from the Zhongmei Tukou terminal in Inner Mongolia to the Mengda terminal, located 52 kilometers away, the pipeline system part of the 1 million-ton methanol capacity expansion project carried out by China National Pipeline Corporation was successfully commissioned safely. This is China’s first MTO methanol long-distance pipeline; it fills the gap in the country’s long-distance methanol pipeline network and holds great significance for opening up new markets for the transportation of hazardous chemicals across the nation. The length of the pipeline project associated with China Coal Methanol is approximately 52 kilometers. The pipeline passes through Tuk Town and Wushenzhao Town in Wushen Banner; 90% of the terrain along its route consists of deserts and hills. The designed pressure of the pipeline is 2.5 megapascals, and the medium transported is MTO methanol. There are 4 valve rooms installed along the entire pipeline. A total of 4,368 welds have been completed in this project, with a first-pass qualification rate of 99.56% ； The anti-corrosion treatment achieved a 100% pass rate; 7 overhead pipeline crossings, 3 directional drilling crossings, and 30 underground pipeline crossings were completed, and the main welding work was finished 3 months ahead of schedule. On the day of commissioning, the project team inspected each monitoring point along the route day and night, analyzing various data at regular intervals and in specific locations. After the samples were tested and found to meet the standards, the pipeline system operated normally, marking a successful completion of the commissioning process. The management team of the EPC project department for the methanol pipeline of China Coal Hubei Energy Chemicals in the Pipeline Bureau leverages the advantages of full-process EPC management, establishes a work system suitable for integrated management, ensures seamless coordination between various stages, reduces resource waste, and improves work efficiency. The project team, together with the construction crew, refined procedures and plans in areas such as quality control, schedule management, and HSSE management, and flexibly allocated personnel and equipment, achieving a maximum of 20.7 kilometers of welding work per month. The property owner has praised the “Pipeline Iron Army” on many occasions. (Zhao Zhibin)