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Why propylene oxide crane tube is necessary to use crane tube

Why is it necessary to use crane pipe (fluid loading arm) for propylene oxide crane pipe? According to Section 6.4.2, paragraph 6 of the petrochemical fire prevention code, the loading and unloading trucks of Class A, B, and C liquids should use crane tubes for submerged loading and unloading. But in fact, there are many people who use hoses to connect to the unloading truck. The outlet of the tank truck is at the bottom of the side. After connecting with the hose, it is directly pressurized with nitrogen.

"In the filling process of risky chemical tankers, the use of universal filling pipeline systems to replace filling hoses is prohibited. It is prohibited to use hoses to fill liquefied risk chemicals such as liquid chlorine, liquid ammonia, liquefied petroleum gas, and liquefied natural gas.

The use of metal crane pipe system (universal joint) has the following advantages:

It can effectively prevent the accumulation of static electricity and reduce the risk of electrostatic ignition (crossover with metal wires or wires);

Reduced safety hazards due to reduced strength caused by hose ageing.

The above is why Xiaobian told us why a crane tube must be used. During the loading and unloading of propylene oxide, be careful. Don't be rushed. The contents are for reference only. If you want more information, please feel free to contact us.

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