These are essentially similar environments, both may have residual fuel and latent fumes that are both toxic and ignitable.

 

Beginning with the fuel tank, it is important to completely empty the tank and to scrape or dry mop the interior down before cleaning so that the gross residual diesel fuel or gasoline is completely removed before exposing personnel to the interior. In tanks large enough to stand up in, be certain that adequate lighting exists to illuminate surface soils (should be UL approved for no-spark and for liquid submersion applications). This will also ensure that a thorough job is done of cleaning the surface to bare metal.

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