The water normally
contained in Diesel fuel may increase due to the condensation of water
vapour contained in the air present inside the storage tanks, both in industrial storage tanks and in the tanks
of vehicles or watercraft.
Following successive fillings
of the tanks, when the air inside them is renewed with air from outside,
the condensed water vapour either mixes with the Diesel fuel, or gradually
accumulates at the bottom of the tank. The amount of water collected can be
higher than may be supposed, reaching approximate values of one litre of
water after ten fillings in a tank of 10 m3 (double for a tank of
20 m3, and so on).
The presence of water in
Diesel fuel and the accumulation of water in the tank should be minimised
to avoid the two types of problem it causes:
Seizures in injection systems in Diesel engines, whether
large or small.
The formation of algae and/or bacteria that foul the
tanks and block filters in the fuel line.
In order to prevent these
problems, it is necessary to decant the water and remove it by bleeding the
tank, so that the water neither mixes with the Diesel fuel to be consumed
nor accumulates in the tanks, as it would lead to the proliferation of
algae and bacteria in the aqueous component of the fuel. If the water
cannot be separated effectively, the use of algaecides and/or bactericides
becomes necessary in the majority of cases.
Additives for Diesel fuel
that favour the de-emulsification and decanting of water (in addition to
other benefits) , like additives "rb bertomeu"
"beco" series for Diesel oil, are recommended for
maintaining the injection systems in good condition.
information on this subject, consult the following documents compiled by rb bertomeu (by clicking on the chosen