Prevention of Sealing Failure of Full-contact Liquid Internal Floating Roof Tank
In order to meet the requirements of fugitive emission of VOCs in tanks,many petrochemical plants have applied the full-contact liquid floating roof sealing system to the light oil tanks,but the sealing failure of floating roof still occurs in tanks.This paper briefly introduces the composition of the full-contact liquid floating roof sealing system,compares the structure,advantages and disadvantages of different types of full-contact liquid floating roofs,analyzes two cases of full-contact liquid floating roof sealing failure in tanks,studies the main reasons for the sealing failure of full-contact liquid internal floating roof tanks,and proposes preventive measures from four aspects:design and manufacture,construction quality,inspection and acceptance,and operation management,in order to reduce the leakage of VOCs in internal floating roof tanks and ensure the safety of tank operations.
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