Nitrogen sealing for storage tanks
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May I ask, for storage tanks containing materials of categories A, B, and C, which category of materials requires nitrogen blanketing? And where can I find the specific regulations regarding this?
Sh3007-2014/ Storage of Class A B and Class B A liquids with toxicity levels I and II! I. Under what circumstances is a nitrogen sealing system necessary for storage tanks: 1. The saturated vapor pressure of the stored medium at room temperature (40°C) is not less than 88 Kpa. 2. The stored medium oxidizes when in contact with air. 3. The stored medium undergoes polymerization upon contact with air. 4. The stored medium is water-soluble or miscible with water, and there are requirements to control the moisture content in it. 5. The stored medium is water-soluble or miscible with water, and there are requirements to control the moisture content in it. 6. The stored medium is highly toxic or volatile. 7. The stored medium contains sulfur, and if the tank is made of carbon steel, ferrous sulfide will be formed; this system is used to prevent the spontaneous combustion of ferrous sulfide. 8. The flash point of the stored medium is below 60°C, making it flammable and explosive.
Fortunately, I looked down one floor; hehe, quite detailed
We haven’t added any substances of categories A and B for many years; we’ve just finished the nitrogen sealing process now!
The materials available at the link http://www.doc88.com/p-9488928401379.html can be used as a reference
Excuse me, is there any difference between Article 4 and Article 5? Thank you!
It refers to the evaporation of water, as well as the absorption of water.