What is the typical minimum volume of atmospheric pressure storage tanks?
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In terms of management, atmospheric pressure storage tanks generally refer to large tanks with a capacity of several thousand to over a hundred thousand cubic meters. However, current standards do not specify a minimum capacity, which results in smaller tanks with capacities of just a few dozen cubic meters also requiring installations such as breather valves and flame arrestors. I remember that companies generally treat such equipment as atmospheric pressure vessels ； Some also say that atmospheric pressure storage tanks refer to those with a capacity of over 1,000 cubic meters, but no evidence can be found for this. Can anyone explain it? Thank you.
This post was last edited by sdwfsgyykai on 2019-4-24 09:28. Regardless of their size, from both process and safety perspectives, it is necessary to control the pressure in storage tanks, including safety devices such as flame arresters after pressure release.
Even in the smallest storage tanks, if the material stored is flammable or explosive, components such as breather valves and flame arresters are essential; for ordinary materials, a vent pipe is sufficient.
Is the concept of a pressure vessel included in the standards?
Atmospheric pressure vessels are determined by the level of pressure, and not by their volume.
What I want to ask is whether very small storage tanks can be treated as atmospheric pressure vessels, thus exempting them from the management requirements applicable to storage tanks.
I’m not quite sure what that means. The \"Design Code for Tank Areas in Petrochemical Storage and Transportation Systems SHT 3007-2014\" specifies the volume of storage tanks, as well as the size of the corresponding vent valves and flame arrestors. Available from 100 m³ to 50,000 m³. https://bbs.hcbbs.com/thread-2046113-1-1.html
It cannot be defined solely by the size of the container; factors such as the medium also come into play
This definition is the product of pressure and volume, right? Besides, isn’t it necessary to check the medium to see if these attachments are needed? If it is pure water, is it not necessary to have a breathing valve or a flame arrester, and only an exhaust pipe is required?
One is to look at the function; it is indeed used for storage. The volume mentioned by the original poster is, I think, another factor as well. Devices that cannot store 2 m3 are also managed as storage tanks. Personally, I think the volume ranges listed in the tank atlas are reasonably set. Was it 50m3 or 60m3?
Important question: say it three times – look at the medium, look at the medium, look at the medium. Example: A 4000 m3 fire water tank has no flame arrester and no vent valve. If you have any questions regarding the storage tanks in your company, please provide details such as the type of tank, the properties of the medium stored, and whether it is used as an intermediate tank in the production process or as a storage and transportation facility. This will help us address your concerns more effectively.