Онлайн-тестування: Test for seamans about Marine Fuel Properties II (CBT)

According to this module, what is the most likely cause of marine pollution by fuel oil?

Air pollution from the use of marine fuels, particularly in diesel engines, is an ongoing problem. Select, from the options given, all of those which contribute directly to air pollution:

Although an energy equivalent indicator is not included within the ISO 8217 fuel standard tables it is still an important indication of a fuels quality. Which of the following range of energy levels is most representative of marine fuels?

Although the stability of a fuel is important the ISO 8217 standard tables do not include any absolute stability indicators. Which of the following statements gives the best description of a stable fuel?

Aluminium and silicon may be present in the fuel. What is the most likely source of these contaminants?

Asphaltenes are complex, unsaturated hydrocarbon molecules contained in residual fuels. Select any of the likely problems from the following options which may result from fuels with high asphaltene content:

Complete the following statement. Marine diesel fuel usually contains of…

During combustion of fuel oil in a diesel engine there are a number of pollutants that may be present in the exhaust emissions. From the options given select all of those which constitute air pollutants:

Each residual fuel grade is designated by a code consisting of three letters and a number. An example of this is the grade RMG 380. What does the number signify?

From the following processes select all of those which are used in the refining of petroleum oil:

From the options given select those which can be used to effectively remove water from fuel oil:

If a person swallows a quantity of fuel which of the following actions should be taken?

In oil refining the term “cracking” is applied to a process based on which one of the following?

Information regarding the health hazards associated with different materials, including marine fuels, should be obtained before handling and working with the materials. Where would be the most likely source of this information?

Limits for Micro Carbon Residue (MCR) are included in both of the ISO 8217 fuel tables. Which of the following is the best description of the effect of a high value of MCR?

Marine residual fuel oil is classed as a distillate fuel. True or False?

Operating a diesel engine on fuel oil containing used lubricating oil may result in engine damage due to high levels of debris or remaining additives it may contain. Which of the following options is recognised as an indication of used lubricating oil being present in fuel?

Prior to entering a fuel tank the atmosphere should have which of the following concentrations?

Select all of the options which are likely to occur in a marine diesel engine due to contamination of the fuel:

Select all of the options which may result in a risk of a health hazard when dealing with fuel oils and fuel related equipment?

Select from the options given all of those which apply to the four compounds methane, ethane, propane and butane:

Select the best option to complete the following statement. To remove as much catalytic fines as possible from residual fuel you should:

Select from the options given all of the possible effects of using fuel with a high sulphur content:

Soluble contaminants such as vanadium may be present in residual fuel. What can be done to remove such contaminants from the fuel prior to on board use? Select the ONE correct answer:

The acronym SECA stands for which one of the following options?

The ash content of a fuel is limited according to the ISO 8217 fuel tables. Which one of the following is the highest risk when operating an engine on fuel with a high ash content?

The best way to remove residual fuel oil from the skin is to wash with clean distillate fuel. True or False?

The cetane number is a reliable ignition quality indicator for all marine fuels. True or False?

The compatibility of one fuel with another cannot be measured directly and may lead to an unstable mixture. To avoid compatibility problems, which of the following options is recommended?

The contaminants normally found in marine fuel oil usually originate from which of the following? Select all of the likely sources from the options given:

The flash point indicates which of the following?

The limit for the NOx content in a diesel engine exhaust depends on which of the following parameters?

The tables in ISO 8217 cover all of the quality aspects relating to marine fuels. True or False?

The two tables in the current edition of the ISO Standard for marine fuels both contain which of the following indicators?

Total sediment (potential) is a measure of which of the following?

Vanadium can be removed from residual marine fuel by filtration. True or False?

What does the term “saturated” mean when used to describe hydrocarbon molecules?

What is the ratio of hydrogen atoms to carbon atoms in the naphtheneor cyclo-alkane series of hydrocarbons?

When a fuel is described as being incompatible it means that it cannot be mixed with another fuel and remain stable. True or False?

When testing diesel engine fuel injectors care must be taken to avoid direct skin contact with the high pressure fuel spray. From the options given select the ONE most likely effect on health that may result from this particular hazard:

Which of the following are the parameters used to calculate the CCAI value of a fuel?

Which of the following best describes the aromatic group of hydrocarbons?

Which of the following can be used to check that the fuel delivered exactly meets the specification of the fuel ordered?

Which of the following carries a high risk of aspiration of fuel oil?

Which of the following is not a fossil fuel?

Which of the following is one of the ways that MARPOL aims to limit CO2 emissions from ships?

Which of the following is the MARPOL annex dealing with air pollution?

Which of the following is the MARPOL annex dealing with marine pollution by oil?

Which of the following is the best description of the alkane or paraffinic group of hydrocarbon compounds?

Which of the following is the correct meaning of “Lubricity”?

Which of the following is the normal gross calorific value of marine residual fuel?

Which of the following non-hydrocarbon elements found in marine residual fuels is the most likely to originate from part of the refining process?

Which of the following options is the best description of marine diesel oil?

Which of the following outcomes is the most likely as a result of combustion of fuel containing sulphur?

Which of the following processes allows the chemical energy in fuel oil to be converted into mechanical work?

Which of the following quality indicators is included in the ISO 8217 tables?

Which of the following statements is the most accurate with reference to the term “combustion quality”?

Which of the following temperature limits is included in the ISO 8217 standard because of safety reasons?

Which of the following temperature ranges is the most likely to be employed for pre-heating the crude oil for the atmospheric distillation process:

Which one of the following chemical elements is the most likely to increase the risk of high temperature corrosion when present with vanadium during combustion of fuel oil?

Which one of the following options is most likely to contaminate fuel oil during the refining process?

Which one of the following options is the best way to minimise the sodium levels in fuel and so minimise the risk of hot corrosion?