When should the seal be removed when emptying a gasoline floating roof tank?
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This year, we need to empty and inspect the gasoline tanks and diesel tanks. Considering the Sinopec accident, I have a question I’d like to ask. When should the floating disk seal be removed during the emptying of a internal floating roof tank? Does it need to be removed before steaming? Or use a steaming tank; after ventilation, if the gas levels are within acceptable limits, then one can enter, remove the seal, and then clean the tank? Because if the seal leaks, removing it will definitely cause more oil to leak from the bottom of the tank. . If oil leaks out when the seal is removed, does it mean the tank has to be steamed again before people can enter? I’m not sure right now what the sequence should be for the step of removing the seal.
First, the tank must be steamed, then ventilated; only after passing the inspections can personnel proceed with dismantling. If oil leakage occurs, the above steps must be repeated. Remember to use explosion-proof tools during the dismantling process, especially drill bits
OK, I understand now. The safety challenges associated with tank cleaning are quite significant after the Sike accident
After steaming the tank, clean it, then remove the seal; if any oil leaks out, clean the tank again and then ventilate it. Once it meets the requirements, operations can proceed.
Damn! This is troublesome! After mechanical cleaning, use a long-tube respirator to enter and remove the seal, then steam the tank!
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