Page 35 - Layout 1

5 Cargo

Speciic prevention for chemical/the cargo arrives in at the vessel’s manifold. It is not

product tankersunusual that the cause of the contamination is because

Contaminationof contaminated shore lines.
It is assumed that all chemical/product tankers are
Even if cleaning has been completed and a certiicate of
cleanliness issued, cargo can still be contaminated. This itted with sampling cocks at the cargo manifold. If

is often because water is left in the lines and they have these are not itted, it is a simple modiication.
Before sampling, the sampling cock must be properly
not been blown and cleaned properly.
Other common reasons are ingress of seawater, lushed in order to obtain a representative sample. The

cracks between cargo tanks, insuficient cleaning of sampling cocks must be completely clean.
For sampling the cargo when it arrives at the ship’s
tanks and lines, incorrect valve operation and failure
of mechanical devices such as pumps and pipes and manifolds, there are three crucial stages.

also vapour and migration of cargo. The cost of a claim The irst stage is the condition of the cargo when
differs vastly depending on whether the off-spec or loading commences. Any remnants of previous

contaminated cargo is discovered at full tank or during cargoes and/or any other contaminants (water) in the

the initial cargo sample. It is not only the cost for shore line, liable to affect the cargo adversely, will
spoiled or even worthless cargo that affects the total appear in a manifold sample drawn immediately upon

cost of the claim. Delay and demurrage costs will also starting loading.

contribute signiicantly to the overall cost.The second stage is to ascertain whether
contaminants may have found their way into the

Sampling of cargocargo in the shore line in the course of loading. This

It is imperative to always take comprehensive cargo can be done by drawing samples from the manifold at
samples. Analysis of cargo samples is vital in any regular intervals.

investigation into the cause of contamination. The The third stage is when the terminal is reporting that

common practice by some terminals to provide only they are shifting from one shore tank to another.
cargo samples from shore tanks and samples from the Finally, cargo samples from each cargo tank have to

vessel’s tanks after loading is not suficient. It does not be taken after the loading is completed.

provide the essential information about the condition

33 www.swedishclub.com