Welcome to the website where you can find answers for the Computer Based Test (CBT) also known as Crew Evaluation System (CES) on the subject «Separators, ALCAP Separation Principles». This site will help you as a marine specialist improve your knowledge with the help of open information, where you can find questions as well as answers for them. 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 Separation Principles». 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 Separation Principles» subject includes theoretical and practical information about separation principles 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.
This page contains answers to Seagull CES CBT (Crew Evaluation System/Computer Based Test) test about Separators, ALCAP Separation Principles, and serve as a database of questions and answers, using which seafarer can prepare to exams for getting certificate of competence, or just to challenge yourself with knowledge in this theme.
CBT CD 0162 – ALCAP, Separation Principles.pdf
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Amount of questions: 21.
Right answers marked with this sign .
Based on what you have learned so far, which of the following statements are correct?
Free water and solids can be removed from oil in a clarifier.
Sealing and displacement water is not added to a purifier bowl.
Too low a separating temperature will not cause the interface to move into the disc stack.
An increase in viscosity will reduce separation efficiency.
Centrifugal separation has advantage over gravitational separation, because:
Separators are easier to install than large settling tanks.
Tank heating systems are complex.
Centrifugal force is many times greater than gravitational force.
During a partial discharge, the bowl opens for:
A few milliseconds only.
A few minutes only.
A few seconds only.
How are the solids removed from a Solid Bowl separator?
Through the drain holes.
By hand.
Through the solids discharge ports.
How long is the bowl open during a partial discharge?
A few minutes.
A few seconds.
A few milliseconds.
Identify from where the V/V Block is drawing Oil?
Storage Tanks.
Service Tank.
Settling Tank.
If the backpressure in the oil discharge line is increased, which of the statements is correct?
Oil level in paring chamber moves outwards.
Water level in paring chamber moves inwards.
Nothing happens.
Oil level in paring chamber moves inwards.
If the density of the oil being supplied to the purifier has increased, would you have to change the gravity disc?
Yes, always.
No, never.
Not necessarily, but a check should be made.
Increasing viscosity of a liquid makes it:
More pumpable and easier to flow.
Less pumpable and more difficult to flow.
Viscosity has no relationship with flow or pumpability.
So, can we increase the speed of separation?
Yes.
No.
The purpose of a purifier is to separate:
Liquids and solids.
Liquids of different densities.
Solids of different densities.
The purpose of the paring disc is:
To pump away the purified oil and water away from the bowl.
To pump purified oil and water into the bowl.
To enclose the bowl from the top end.
The recirculation valve is positioned close to purifier:
To lessen effect of temperature fluctuation when valve operates.
For ease of installation.
For ease of maintenance.
The time required for particles to separate in sedimentation depends on:
Speed and size.
Form and shape.
Colour and temperature.
To achieve the best possible results, the interface should be positioned:
As close as possible and within the top disc.
As far out as possible, but no further than the top disc.
Wherever it can be positioned.
What is a Solid Bowl separator suitable for?
Processing liquids with large solids volume.
Processing liquids with small solids volume.
Processing liquids with negligible solids volume.
What is the purpose of the oil paring disc?
To pour-off the water from the oil.
To keep the interface in the correct position.
To discharge the water under pressure.
To discharge the oil under pressure.
Which of the following cause the interface to move outwards?
Increase of Feed Temperature.
Decrease in Oil Density.
Decrease in Feed Flow.
Increase in Oil Density.
Why is a heater with PI (proportional and integral) required?
To keep steady control of temperature.
To avoid manual temperature control.
To allow for temperature fluctuation.
With decreasing back pressure, the inner level of liquid in the paring chamber:
Moves inwards.
Moves outwards.
Stays static.
Your Clarifier is NOT cleaning the liquid as it should. Click the alternative you think would improve cleaning:
Reduce the feed.
Increase the feed.
Reduce temperature of process liquid.
Increase temperature of process liquid.
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