Seeking help: Standards or specifications regarding flow rate for loading vehicles with tank cars
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For loading liquid hydrocarbon materials into vehicles, what are the standard requirements for the loading speed? There is a claim that the optimal value is between 4 and 4.5; is there any standard to support this? Any experts available?
The flow rate during the filling of hydrocarbon liquids can be controlled by referring to \"GB12158-90 General Guidelines for Preventing Static Electricity Accidents\". a. When filling railway tank cars, the allowable flow rate of the liquid inside the loading pipe is calculated using equation (1): VD ≤ 0.8 ……………………(1) Where: V – flow rate of the hydrocarbon liquid, in m/s； D — Inner diameter of the flexible hose, in m. The outlet flow velocity of large-diameter pipes during loading and export can exceed the value calculated according to Equation (1), but it must not be greater than 5 m/s. b. When filling road tankers, the allowable flow rate of the liquid inside the dip pipe is calculated using equation (2): VD ≤ 0.5 …………………………(2) Where: V – flow rate of the hydrocarbon liquid, m/s ； D — Inner diameter of the flexible hose, in m.
According to what was said above, I have a loading crane position at 50, with a flow rate of 10. Haha, that’s way too high
I’m aware of this standard, but in actual production it has no practical significance; no one dares to use the value of 10. I’m referring to the standard that is actually usable, haha
3 m/s is the limit for many state-owned enterprises; we also use this value in our operating procedures
A flow rate of 3–4 m/s is too slow; liquefied hydrocarbons have a low density, so it takes a long time to load one truck’s worth of them. I’m looking for a standard that specifies a maximum safe flow rate – this way, by increasing the flow rate, I can comply with the regulations while also ensuring safety, and at the same time preventing excessive loading times. Heheh. Some people say that the API standard is 7; I haven’t found such a standard. If it were 7, that would be ideal