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Crew Evaluation System CBT test online for seamans about Separators, Alfa Laval Fuel Oil System

Welcome to the website where you can pass online the Computer Based Test (CBT) also known as Crew Evaluation System (CES) on the subject «Separators, ALCAP Fuel Oil System». Practice like this will help you as a marine specialist improve your knowledge with the help of online studying and appraisal practice. CES/CBT based on practical information and marine specialists experience.

CES & CBT tests developed for evaluating seaman basic knowledge by Seagull Company (rebranded as «OTG»), is an evaluating online-tool, used for revealing any professional preparation needed in specific fields of knowledge, defined by STCW.

CES tests have proven themselves as good tools for the selection and recruitment process, as well as advancing the level of knowledge of the current officers and crew. Ocean Technologies Group use various subjects for question creation, which includes:

  • Crowd and Crisis Management;
  • Integrated Navigation System (INS);
  • Ballast water management;
  • Handling and Stowage;
  • Vessel operation management and safety;
  • Marine engineering;
  • Maintenance and repair, etc.

Current test contains Seagull CES questions on the subject «Separators, ALCAP Fuel Oil System». Those questions can be used for competence verification specialist capable of preventing accidental situations related with transporting safety, or also for self-examination.

«Separators, ALCAP Fuel Oil System» subject includes theoretical and practical information about fuel oil system of an ALCAP separators. Knowledge of this information directly shows employee’s competence who holds a relevant post on a vessel, provides to understand operational rules and specifics of an ALCAP separators on a vessels, control liquid separation process, detect any malfunctions, be able to perform an emergency stop so that prevent system clogging or separator failure.

On this site Crew Evaluation System Test on the subject «Separators, ALCAP Fuel Oil System» contains 13 questions you need to answer with no possibility to go back to previous question. Therefore, we recommend carefully reading each question and making decision with no hurry. In case you have some difficulty answering, you have also possibility to request a hint.

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A screw pump is a good solution to the feed pump required for the separator, because:
It costs less than a reciprocating pump.
It is more energy efficient.
It does not separate the particles in the oil before reaching the separator.
Next question
Loss of Water Pressure to the Valve block will:
Make system malfunction.
Will not affect the system.
Water pressure loss can be accommodated for some time.
Next question
One of the main functions of the three-way recirculation valve is:
To provide different paths for the oil to travel.
To increase the complexity of the system.
To recirculate oil away from the separator in the event of an abnormal situation.
Next question
The back pressure setting is:
Midway between delivery height pressure and pressure required to overflow bowl.
Midway between feed pressure and pressure required to overflow bowl.
Not governed by delivery pressure or by overflow pressure.
Next question
The oil entering the separator should be preheated and of lower viscosity, because:
It ensures better separation.
It reduces the speed of separation.
It is necessary to run the preheater.
Next question
The oil paring discs for conventional and ALCAP separators are different in the following ways:
ALCAP paring discs are larger to cope with more viscous oils.
ALCAP oil paring discs have regulating holes.
The edge of the ALCAP oil paring disc has 2 lips to make a seal and prevent air getting drawn in.
There is no difference, they are inter-changeable.
Next question
What is the purpose of these holes?
To prevent build-up of pressure when the drain valve is closed.
To allow movement to minimise over-heating.
So there is always a flow through the small hole in the flow control disc to stop it getting blocked.
To allow air to be vented from the oil paring chamber.
Next question
When might you adjust parameter 20?
Parameter 20 relates to a separator type and should not be changed.
When commissioning a new installation or fitting a new EPC card.
When using a fuel oil separator to clean lube oil.
Next question
Which group of parameters may have to be adjusted for a different oil type?
Installation parameters.
Service parameters.
Process parameters.
Timer parameters.
All of them.
Next question
Which of the following is most accurate?
The ALCAP Separator has to have a back-pressure of 1,5-2,0 bar to run on auto.
The back pressure regulating valve is automatic and part of the ALCAP principle.
The transducer monitors changes in the condition of the oil leaving the bowl.
The recirculation valve always changes position for an abnormal situation.
Next question
Which of the following statements best describe the purpose of parameters?
To adjust the EPC 400 to the correct variables for each installation to ensure optimal performance.
To adjust the EPC 400 for different separator types and installations, to ensure optimum performance.
It makes adjustments very easy.
Part of the fashion in moving to more sophisticated electronics.
Next question
Which statement best describes why a flow control disc can replace a set of gravity discs?
Normally the ALCAP separator runs as a clarifier, and when draining water, it is a purifier with a restricted broken water seal.
By keeping interface outside the disc stack, the water seal is less important, only one flow control disc required.
With the ALCAP the chance of having the interface into the disc stack is reduced, because of the small hole in the flow control disc.
With the ALCAP we are not so concerned with the position of the interface, it can be outside the edge of the top disc. It is not necessary to change gravity discs to ensure correct interface position.
Next question
Why is water added to the ALCAP fuel separator bowl after each discharge?
By keeping the sludge moist hard sludge is prevented, and a good discharge results.
To displace the oil and minimise on oil losses.
To check that the transducer is still working the reference has to change.
This puts a precise quantity of water into the oil, which can be measured by the transducer.
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* In some questions may be more, than one right answer.
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