Not all oily residues are the same
Slop is often liquid oily mixtures from washing and tank operations. Sludge is denser, settled material removed during demucking and bottom cleaning. Reception partners and paperwork expect clear identification.
Why it matters
- Wrong stream labels delay reception
- Volume estimates affect pumps, tanks and trucks
- Documentation must match what left the vessel
Plan streams early with sludge cleaning and waste disposal. Deep dive: MARPOL Annex I oily waste.
