Regarding the scanning tank
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Article 5.2.20 of the Code for Fire Protection Design of Petrochemical Enterprises: Storage tanks for Class B liquids with a storage temperature above 100°C shall be equipped with dedicated cleaning tanks. What kind of tank is the scanning tank mentioned in the text? What is line scanning? Does \"scanning the pipeline\" mean cleaning it? I’m a beginner; I hope the experts here will kindly offer their guidance. Thank you!
A piece of advice: Propane Class B liquid storage tanks at 100°C are prone to bumping. If a vent tank is not installed, steam can be drawn into the tank; if water is not removed in time, this can lead to bumping and resulting in accidents. Furthermore, most Class B liquids at 100°C are liquids with high viscosity and poor fluidity, making purging difficult; as a result, the purging is not thorough, which prevents welding or line solidification. Therefore, the use of a line-purging tank can solve the aforementioned problems.
Ask the same question: What is a sweep tank?
During my time in Daqing, I also heard the term “line cleaning”; I didn’t understand what it meant. It refers to a floating-roof storage tank with a capacity of 50,000 cubic meters, used for storing residue oil. Is it related to cleaning as well?
Very professional! Could you please explain in detail the various specialized terms? Thank you!