Regarding the classification of liquefied gas storage tanks, I need help
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There is a liquid ammonia storage tank at room temperature without any insulation measures; its volume is 10 cubic meters. What category does it fall into? I’m not sure. According to the regulations on fixed containers, it should be classified as Category 2, but some people say it’s Category 3. I’m waiting for an answer right now – it’s quite urgent
This post was last edited by wx_Catherine_Mi on 2020-5-25 10:32 to learn* something
The design pressure also matters; those below 5 MPa fall into Category 2: victory:
1. Class III pressure vessels are those that fall under one of the following categories: high-pressure vessels； 10.0MPa≤p＜100.0. Liquid ammonia storage tanks are likely not of this type; they are medium-pressure glass-lined pressure vessels ； High-pressure and medium-pressure shell-and-tube waste heat boilers ； Spherical storage tank (volume ≥ 50 m3) ； You only have a capacity of around ten cubic meters, so it doesn’t count as a cryogenic liquid storage container (with a volume greater than 5 m3) ； Medium-pressure vessels (only for media with extremely high and high toxicity) ； 1.61MPa≤p＜10.0MPa. Ammonia gas is not classified as a high-pressure substance; low-pressure containers are applicable (only for media with extremely high or high toxicity levels, where the product is greater than or equal to 0.2 MPa·m3) ； Medium-pressure reaction vessel (only for flammable or moderately hazardous media with a pV product of 0.5 Pa·m3 or greater) ； Medium-pressure storage vessels (only for flammable or moderately hazardous media with a pV product of 10 MPa·m3 or greater) ； Pressure vessels manufactured from materials with a high strength level (meaning that the minimum specified value for tensile strength in the relevant standards is 540 MPa or higher) ； Mobile pressure vessels, including railway tank cars (for liquefied gases and cryogenic liquids), tank trucks, and tank containers (for liquefied gases and cryogenic liquids), etc. If the pressure is not high, it can only be classified as category two; this is just my personal opinion for reference
Classify according to Appendix A of TSG21.