Emergency shut-off interlock for storage tanks in the SIS system

Seeing that you’ve asked so many questions related to the SIS in tank areas, it seems that if you’re not a designer, asking these questions really isn’t meaningful

1: This needs to be considered from safety perspectives such as the properties of the process medium; generally, interlocks are used for the tank bottom valve and the tank level gauge, as well as level switches. 2: The interlock system for electric pumps is generally linked to factors such as the tank level gauge, the temperature of the pump’s stator, and current values. 3: For turbine pumps, in addition to process-related interlocks, it is also necessary to take into account various interlocks related to the unit itself, such as speed, vibration levels, and low lubricating oil pressure. Specifically, you need to consider the requirements of your own factory regarding the process, the stored medium, and safety aspects; usually, these matters are handled by the design institute

Safety regulations require storage tanks to have high-low interlocks; to meet the safety inspection requirements, I believe the low-level interlock should only be able to shut off the discharge valve and the discharge pump. If considering practical process safety, it might be related to the parameters of subsequent processes.

An explosion-proof emergency shut-off valve is a reliable and essential safety device used to prevent oil leaks in oil depots, as well as other safety incidents such as oil spills, fires, and explosions in oil tanks. It plays a particularly important role in ensuring the safety of property and personnel. It works in conjunction with safety devices such as level gauges and combustible gas alarm lights; in the event of an accident at an oil depot or chemical plant, the shut-off valve closes quickly thanks to the alarm signals or an emergency power outage, thereby stopping the flow of oil or chemical liquids and preventing the accident from worsening. II: Scope of Application and Uses This product is suitable for the inlet and outlet pipelines of oil tanks in oil depots and chemical plants. In the event of an overflow or leakage of oil or chemical liquids, or in case of a fire, the shut-off valve can be closed urgently to cut off the flow of such oils or hazardous chemical liquids. Reduce the occurrence of explosion and fire accidents caused by leaks, and ensure the safety of lives and property of ** and the people.