Operation
0710−1/A1
Winterthur Gas & Diesel Ltd.
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5.6 Hydrogen Sulphide
WARNING
Danger: Hydrogen Sulphide (H
2
S) is a very toxic gas and
exposure to high concentrations is dangerous and can kill you.
Be careful when tanks or fuel lines are opened because there can
be H
2
S vapor. At low concentrations H
2
S smells almost the same
as bad eggs. You cannot sense H
2
S at moderate concentrations.
H
2
S will cause nausea and dizziness.
5.7 Acid Number
Fuels with high acid numbers have caused damage to fuel injection systems. Most
fuels have a low acid number, which is not dangerous, but an acid number above
2.5 mg KOH/g, can cause problems.
5.8 Sediment
High quantities of sediment decrease the ignition and combustion quality of the fuel
and increase wear and damage to engine components. High sediment quantities can
cause filters to block, or frequent discharge from filter systems that have automatic
cleaning. For more data about mixtures, see paragraph 3.8 in the HFO section.
5.9 Pour Point
The operation temperature of the fuel must be kept between approximately 5_C to
10_C above the pour point to make sure that the fuel is pumped easily. It is possible
that in extremely cold conditions, there could be problems for distillate fuel.
5.10 Water
The quantity of water in distillate fuel can be decreased as follows:
D Let the fuel settle in the service tanks
D Use the centrifuge to remove water from the fuel.
5.11 Ash and Trace Metals
Distillates must have low quantities of ash, vanadium, sodium, aluminium, silicon,
calcium, phosphorous and zinc related to residual fuels. High quantities of these
materials increase mechanical wear, high-temperature corrosion and particles in the
turbocharger, exhaust system and the boilers.
5.12 Used Lubricating Oil and Other Contamination
Lubricating oils and chemical waste must not be mixed into the distillate fuel pool.
Lubricating oil can cause water to stay because of the large quantity of detergent.
Additive materials such as calcium, magnesium, zinc and phosphorous could
increase the ash content to more than that given in the specification.
Chemical waste must not be added to distillate fuel. There were some examples of
chemical waste substances found in fuel. These materials can cause the fuel to
become too thick, to become almost solid and to block filters. They can also cause
damage to fuel injection systems and cause fuel pump plungers and injectors to stop.
2017−08
Diesel Engine Fuels
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