Whether the pressure vessel falls under the jurisdiction of special equipment under the following conditions
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Is a container with a normal operating pressure of negative pressure, a maximum operating pressure greater than 0.1 MPa, containing toxic substances, operating at a temperature below its boiling point, and having a volume of more than 30 L considered a pressure vessel falling under the jurisdiction of special equipment?
This post was last edited by zhangjuhua on 2015-10-6 at 21:39. According to the Pressure Vessel Regulations-2009, both conditions are met: the maximum operating pressure is greater than 0.1 MPa, and PV >= 2.5 mpa·L. As for the third condition, if the medium is a gas, then liquefied gases certainly fall under the scope of these regulations. If it is a normal liquid, and its maximum operating temperature is below its boiling point, then it is not subject to these regulations. However, it is unclear whether there are any other regulations applicable to new special equipment
When the operating temperature is below its boiling point and the gas volume is less than 30 L, this container does not fall under the category of pressure vessels regulated as special equipment...
According to the definition of pressure vessels in Catalogue No. 114 of 2014 regarding special equipment: A pressure vessel is a sealed device used to hold gases or liquids and is subjected to a certain pressure. It includes fixed and mobile vessels whose maximum working pressure is greater than or equal to 0.1 MPa (gauge pressure) for gases and liquefied gases, and whose maximum working temperature is greater than or equal to their standard boiling point; such vessels also have a volume of 30 L or more and an inner diameter of 150 mm or more (for non-circular cross-sections, this refers to the largest geometric dimension of the cross-sectional boundary)； Gas cylinders designed for gases, liquefied gases, and liquids with a standard boiling point of 60°C or lower, whose nominal working pressure is 0.2 MPa (gauge pressure) or higher, and whose product of pressure and volume is 1.0 MPa•L or higher ； Oxygen chamber. It can be determined that this device does not belong to special equipment.
Agree with the second floor; after reading the definition, apply it according to that definition
It’s easy to determine when the volume of the equipment itself is greater than 30 liters, but how do you determine the volume of the gas space at the top of the equipment, such as in towers or filters?
The medium is toxic! Should it be considered separately?
Does liquefied gas qualify as having a working temperature below its boiling point? ?
This post was last edited by mchb on 2015-10-4 00:27. The question now is how to determine the volume of the gas phase space inside the container? If it’s all liquid, then to achieve maximum pressure, the liquid must fill the entire container. But if it’s not all liquid, then to reach maximum pressure, should we consider the presence of air inside the container or should the container be filled with liquid?
It belongs to the range of pressures,,,
Look at the definition; this point in the definition explains it very clearly