Should a safety valve be installed in low-pressure storage tanks? In what situations should safety valves be installed on storage tanks? ?
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Should a safety valve be installed in low-pressure storage tanks? In what situations should safety valves be installed on storage tanks? ? I have a methanol storage tank with a capacity of 5 cubic meters, which is sealed with nitrogen at a pressure of 50 KPA. Safety valves were considered for use in case of a fire. However, the design team raised concerns and suggested converting the tank into a tank that operates at atmospheric pressure (with the pressure reduced to 3–5 KPA). They said that if the safety valves failed, there would be no way to release pressure, so an emergency release valve in the form of a manual valve should be added. They argued that safety valves were unnecessary and suggested removing them. What I would like to ask is: 1. Can manual valve pipelines alone serve as a means for discharge? Can a large amount of discharge actually be released? Why can a safety valve release such a large volume of fluid? 2. Can a safety valve be omitted if the pressure in the storage tank is reduced? No need to worry about the fire?
This storage tank doesn’t need a safety valve; it’s not a pressure vessel. While retaining the manual pressure relief valve, an emergency pressure relief manhole can also be added. When the breather valve fails, the emergency pressure relief manhole releases pressure automatically
If it is in a fire-hazardous area, does one not need to consider the risk of fire? ?
Explosion protection must be considered; all electrical equipment must be explosion-proof. Open flames are strictly prohibited
Sir, do you mean that we don’t consider the overpressure condition of the storage tank in the event of a fire? ? Thank you!~
Emergency pressure relief manholes can address the issue of overpressure in case of a fire.
Oh, they are emergency relief manholes for atmospheric or low-pressure tanks. Can emergency relief manholes be used for pressure vessels? What is the difference between a safety valve and an emergency relief manhole? Thank you!
It can’t be generalized; some materials are not suitable. Safety valves operate at high pressures, while pressure relief vents are accessories for equipment that operates at atmospheric pressure, and they are generally used in larger storage containers
For storage tanks, such as those used for oil storage pipelines, we generally install prismatic pressure relief valves, with the pressure relief setting at 0.4 MPa
Should a horizontal tank storing a liquid with a boiling point of 32°C be equipped with a safety valve?
In accordance with GB50341 and Sh3167 requirements