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5 Cargo

Cargo tanks were blinded off from the cargo system (piping discharge the cargo tanks were washed according to
system) on the common line by valves and a spectacle procedures. When tank cleaning was complete all tanks were

lange. These changes were not updated in the discharge vented and made inert.

plan, which stated that the FAME should not be discharged Pre loading inspection was completed before loading
through the common line.commenced but because all tanks were made inert, this

After discharge the vessel drained the line’s drain pump inspection simply involved checking that all tanks were dry.

individually and pumped to a slop tank segregated from the A single loading arm was connected to the manifold and
cargo system and each cargo tank was super stripped, one loading commenced. After the irst foot had been loaded,

by one.samples were taken, and landed for analysis. The result of

In the next loading port the vessel loaded Jet-A1 cargo the samples failed due to low lash point and a second set
on the common line. After cargo tests had been completed it of samples were taken. The sampling on both occasions was

was found that the Jet-A1 had been contaminated by FAME.carried out using the vessel’s closed sampling equipment. The

second samples also failed the analysis.
Causes:

The initial cargo plan was not followed. The vessel had an Causes:

experienced crew on board that should have known that a A surveyor came on board to investigate and the vessel’s
limited amount of FAME would contaminate Jet-A1 fuel. If a cargo line system appeared to be in good order. There was no

cargo is loaded on a certain line to a speciic tank, it should undrained residue of previous cargo left in the cargo lines.

be clear to all staff involved. This factor should be considered It was also conirmed that all other cargo lines were blown
during discharge, in order not to spread the speciic cargo clear after tank cleaning was complete.

more than necessary in the line system, which may then Samples taken from both the vessel’s manifold and shore

require a more accurate cleaning method than draining. The loading boom were at levels consistent with that recorded
procedures regarding proper cleaning procedures on board on the Certiicates of Quality. The differing lash point of

the vessel should be reviewed by the manager.samples from shore-side and the pipes compared to the

cargo tanks showed that the contamination happened in the
vessel’s cargo tanks. The cause is believed to be because of

Contamination case study 3insuficient tank cleaning.

The tanker was loading Jet-A1. The previous cargo was
unleaded gasoline. This cargo was loaded and discharged

through a single arm connected to the manifold. After

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