Selection of internal floating disk

This post was last edited by the Storage and Transportation Engineer on 2011-5-25 08:40. Yes, the Code for Fire Protection Design of Petrochemical Enterprises GB50160-2008, section 6.2.2, stipulates that for storing liquids of Class A-B and Class B-A, a metal floating roof or internal floating roof should be used. For materials with special requirements. Other types of storage tanks can be used. 6.2.3 specifies that for storing Class A/B liquids with a boiling point below 45°C, pressure or low-pressure storage tanks are advisable. The steps to determine whether to use such tanks (personal summary) are as follows: 1. Check the flash point (to determine whether it is a Class A/B or Class B/A liquid); if the flash point is ≤45°C, proceed to the next step. 2. Check whether the boiling point is below 45°C; if not, proceed to the next step. If it is below 45°C, pressure tanks or low-pressure tanks can be used. Or a atmospheric-pressure storage tank with additional cooling. 3. If an atmospheric-pressure storage tank can be used, it is necessary to determine whether the material tends to polymerize or oxidize, and whether it reacts with components in the air and deteriorates as a result. If it possesses such properties, nitrogen filling for protection is recommended; otherwise, an internal floating roof can be used. Additionally, in situations where land is scarce, storage tanks for Category B substances and similar can employ internal floating roofs to reduce the spacing between tanks (with a spacing of 0.4d), thereby minimizing the land area required. Storage of highly toxic substances in atmospheric-pressure tanks is not recommended, as such tanks are more prone to damage compared to pressure tanks, which could turn economic issues into serious problems.

As a supplementary note, the operating temperature of internal floating roof storage tanks is generally below 80°C; too high a temperature is not conducive to the sealing of the internal floating disk