from original letter)
– Aceites Coosur S.A.
E23220 VILCHES – Jaen – (Spain)
present letter is to confirm that we have regularly been using the heavy
fuel oil additive supplied by your company, “rb bertomeu” beco
F1/ASF in our co-generation [power] plant, which is located in Vilches in
the province of Jaén, and that the plant had been running for a long
period before we started using this particular additive. The plant
consists of two WARTSILA 12 V 46 B-Type engines, which run on
fuel oil, with a power output of 10.5 MWe each.
we make a comparison between the data corresponding to the period before
using the additive and the current period (using the additive), we can
observe that the regular use of the additive for heavy fuel oil “rb
bertomeu” beco F1/ASF provides a series of improvements in the
operation of our plant, of which the most important are highlighted as
The scheduled operational life is fulfilled for pumps and
injectors of the fuel oil, without the increase in fuel consumption
expected due to wear of these components, estimated at 2-3% by the
engine manufacturers in the last phase of their operational life.
This increase in fuel consumption - which is a gradual process from the
installation of new pumps and injectors until their replacement as
scheduled under the TBO – has not occurred with the use of the
additive “rb bertomeu” beco F1/ASF: thus we calculate that,
thanks to this, we have obtained an average saving on fuel oil of
between 0.9% and 1.2% over the full TBO.
The volume of sludge produced by fuel oil has decreased by 67%,
while the need for cleaning the fuel oil filtration unit has been
considerably reduced, as with the fuel line as a whole.
absence of corrosion on valves and turbos.
reduction in incrustation on valves and turbos. The latter permits us to clean the turbos less
frequently, thereby increasing the time between cleaning (TBO of
cleaning turbos) from 4,000 hours previously to the current 8,000 hours.
Problems in combustion are prevented, with values normally below
3 on the Bacharach Index of opalescence, and CO content below 40mg/Nm3
in gases to the atmosphere (lower than 90mg/Nm3 for gases
when O2 is 5%).
authorise the circulation of this letter as a reference for any purpose.
: Josu Ortuoste,
Co-generation [power] Plant Manager,
Head Engineer for the Merchant Navy.