【Common Issues in Haichuan Pipeline Design】Don’t forget to install cut-off valves and check valves on nitrogen pipelines
Thread Content
During the design, installation, and inspection of pipelines, various minor issues that have been overlooked or not taken into account are often discovered. These issues are compiled into a series; the list is being updated continuously. Everyone is welcome to actively participate in discussions. This is a compilation post on common problems in Hailuan pipeline design – it’s still being updated, and discussions are welcome: https://bbs.hcbbs.com/thread-5705828-1-1.html ------------------------------------------------------------------
[Common Issues in Haichuan Pipeline Design] – A compilation post; images and text are being updated. Feel free to join the discussion: https://bbs.hcbbs.com/thread-5705828-1-1.html (Source: Haichuan Chemical Forum (Hua Haichuan Liu hcbbs))
【HaiChuan Safety Discussion】Compilation of Hidden Dangers Around Us – with pictures and texts; everyone is welcome to join the discussion: https://bbs.hcbbs.com/thread-5705518-1-1.html (Source: HaiChuan Chemical Forum (HuaHaiChuanLiu hcbbs))
【Ten Years of Rapid Development in Chemical Engineering Equipment】From 2867 to 2025, CNOOC Engineering took the lead in developing a device for detecting the flare angle of cable-laying machines, which has now been successfully put into use. https://bbs.hcbbs.com/thread-5707082-1-1.html (Source: Haichuan Chemical Industry Forum (HCBBS))
【HaiChuan Safety Discussion】Hidden Dangers Around Us – Unclear Nameplates on Instrumentation Equipment and Lack of Tag Numbers https://bbs.hcbbs.com/thread-5707603-1-1.html (Source: HaiChuan Chemical Forum (HuaHaiChuanLiu hcbbs))
【Ten Years of Rapid Development in Chemical Equipment】From 2025 to 2035, Pingmei Shenma Hydrogen Chemistry Company managed to achieve the domestic production of spare parts for high-pressure coal slurry pumps used in gasification units. https://bbs.hcbbs.com/thread-5707406-1-1.html (Source: Hchbbs Chemical Forum)
【Ten Years of Rapid Development in Chemical Equipment】From 2886 to 2025: China’s first industrial production project using its own technology for hexanitronic acid via the butadiene process – Tianchen Qixiang New Materials’ 200,000-ton/year hexanitronic acid facility has reached full capacity. https://bbs.hcbbs.com/thread-5707419-1-1.html (Source: Haichuan Chemical Forum (HCBBS))
What is the purpose of adding a check valve? In fact, installing a check valve increases the safety risk, and the pressure ahead of the nitrogen is very high, so there is no risk of backflow