Is it necessary to install an emergency shut-off valve on atmospheric pressure vertical cylindrical welded steel storage tanks?

Emergency shutdown is related to the medium, right? It doesn’t have much to do with the tank itself, does it?

So, must storage tanks for flammable liquids be equipped with emergency shut-off valves? I think they aren’t necessary unless it’s a tank storing liquefied substances.

The last edit to this post was made by 678-2 on 2016-8-22 at 09:21. Whether an emergency shut-off valve is necessary for a storage tank depends on the material being stored. You may refer to Article 6.4.1(4) of the \"GB 50160-2008 Code for Fire Protection Design of Petrochemical Enterprises\", as well as the provisions in Section II of the \"Notice from the State Administration of Work Safety on Further Strengthening the Safety Management of Chemical Storage Areas\" (An Jian Zong Guan San [2014] No. 68). For your reference, 6.4.1 Railway loading and unloading facilities for flammable liquids shall comply with the following requirements: 1. Ladders shall be provided at both ends of the loading and unloading platform, as well as every 60 meters or so along the platform ； 2. Liquid types A B, B, and C A are strictly prohibited from being unloaded using a trough unloading system ； 3. For liquids of Classes A B and C A that are loaded through an open top, submersible loading nozzles should be used ； 4. An easily operable emergency shut-off valve shall be installed on the inlet pipeline for flammable liquids (except lubricating oils) at a distance of more than 10 m from the edge of the loading quay ； II. Further strengthen the safety management of chemical tank farms (1) Further improve the monitoring and surveillance facilities at chemical tank farms. In accordance with regulatory requirements, high and low liquid level alarms are installed for the storage tank; automatic interlocks are employed to shut down the tank’s feed valve when the liquid level is too high, and to stop material transfer when the liquid level is too low. Ensure that the alarm systems for leaks of flammable, explosive, toxic, and harmful gases are in good working condition. Emergency shut-off valves must be installed on key storage tanks such as large-scale ones, those storing liquefied gases, and highly toxic chemicals.