Should the vent hole of the fusible plug on the propylene sphere tank be opened after it is put into use?
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I would like to ask everyone: for our company’s six spherical tanks (for propane and propylene), are the fusible plug vent holes on the legs supposed to remain open after they are put into use? Experts examined it and said it should be opened, but no regulations on this matter were found.
I’m shocked; I really can’t say. Do you know what a fuse link is and what its function is? It won’t work if something is blocking the fuse link and preventing proper drainage; it would be ridiculous if you tried to clear the hole in the fuse link.
From what I know, propylene spheres are usually equipped with fusible plug vents during use, so as to quickly release internal pressure in the event of any abnormalities. However, whether it is necessary to open the fusible plug vent should be determined according to the specific design specifications and operation manuals. For the operation and maintenance of spherical tanks, it is best to refer to relevant regulations and standards. If your company cannot find relevant regulations, it is recommended to consult a professional engineer or contact the manufacturer of the spherical tank to obtain accurate advice and guidance. They can provide you with more professional advice based on the specific design and performance of the spherical tank. .
It’s right that the expert told you to open it. I remember that in the 1998 version of the tank standards, only gas vents were required; fusible plugs were no longer necessary. Moreover, in actual inspections, the inner surface of the column did not suffer severe corrosion as a result of these openings
GB/T12337 has never required the installation of a fuse plug. It’s just that the older version of the drawings and design manuals still include fusible plugs. During the previous training, Teacher Liu Fulu said that this thing isn’t very useful; having an exhaust hole is sufficient, as the inner wall of the pillar hardly corrodes.
Don’t be surprised – spherical tanks designed in the past twenty years all come without fusible plugs.
You’re right, but that doesn’t diminish my surprise; please forgive my lack of knowledge in this area.
There is no need to add a fusible plug; simply providing a vent hole is sufficient, which functions similarly to the vent hole on the tower skirt. If there is a fireproof layer outside the pillar, be sure not to let it block the fusible plug.
It was required in the earliest regulations, but this requirement is no longer present in current regulations. It can be canceled.