CES test online for Junior specialists on the Reefer

Welcome to the website where you can pass online the CES test on the subject «Junior Specialist – Reefer». Practice like this will help you as a marine specialist improve your knowledge with the help of online studying and appraisal practice. CES based on practical information and marine specialists experience.

CES 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.

Version: 6.0.0.
Test type: STCW.
Duty: Junior Specialist.
Vessel type: Reefer.

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 «Junior Specialist – Reefer». Those questions can be used for competence verification specialist capable of preventing accidental situations related with transporting safety, or also for self-examination.

This test for juniors includes theoretical and practical information about advanced training for work on the reefers. Knowledge of this information directly shows employee’s competence who holds a relevant post on a vessel. A seafarer on a refrigerated vessel is responsible for the operation and maintenance of refrigeration systems, ensuring precise temperature control for the transported goods. Additionally, they monitor the condition of equipment and address any potential issues with the cooling systems during voyages. Proficiency in troubleshooting technical problems and strict adherence to safety regulations are crucial aspects of the job for such a mariner.

On this site Crew Evaluation System Test on the subject «Junior Specialist – Reefer» contains 25 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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Code: BDYA08 An electrical power emergency source on ship is required because:

It satisfies the SOLAS (and other) requirement for the ship safety.

The main diesel generator(s) can be taken out of service for overhaul of repair.

The ship’s total load can be shared between main and emergency generators.

Next question

Code: EDWY51 Why is precooling of cargo is important?

If no precooling done cargo inside of container can be out of order already.

Reefer cannot be used to reach the desired temperature, cargo of a reefer container has to be brought to the desired temperature prior to loading.

Its save fuel. After loading onboard, vessel will not spend own fuel to bring temperature on required level.

Next question

Code: XWUR53 How does a reefer container work?

Two generators from both side of the container blows air into the container.

The generator, placed on one side of the container, blows air into the container.

Next question

Code: ONZM01 What is the reason for the superheat in reefer system?

Too much refrigerant in the system leading to overheat of the compressor.

Low quantity of refrigerant in evaporator.

Next question

Code: INAK67 Which of the following should be used on an electrical fire (2 answers are correct).

CO₂ extinguisher.

Dry powder extinguisher.

Water extinguisher.

Foam extinguisher.

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Code: DUIE89 Which parameters of the reefer container you should check after loading?

Serial number, set point, gas level in receiver, compressor current, supply voltage, evaporator temperature, superheat, suction temperature, discharge temperature.

Serial number, stowage position, set point.

Serial number, stowage position, set point, ventilation position, humidity set point, supply temperature, return temperature, active alarms, visual damages of refrigerated plant.

Next question

Code: Rlli18 How to test dielectric gloves before work?

Dielectric gloves do not need to be tested before work, if there is a “test stamp” from manufacturer.

Before use, the gloves should be inspected, paying attention to the absence of mechanical damage, dirt and moisture, and also check for punctures by twisting the gloves towards the fingers.

Before use, the gloves should be inspected, paying attention to the absence of mechanical damage and fill gloves with hot fresh water.

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Code: JQVR63 What is the reason between dry and reefer container?

The major difference between normal dry container and reefer container is that the temperature condition controlling system is available in reefer container.

Difference in types of cargo it loaded.

It is the same, just different names for containers in different countries.

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Code: SHKX90 What is Reefer container used for?

Reefers are essential for worldwide trade of food. Storage of the wood.

Reefers are essential for worldwide trade of food.

Storage of food.

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Code: ARPC01 What is the superheat in a refrigerated system?

This is the difference between the boiling point temperature of refrigerant in the evaporator coil and the actual temperature of the refrigerant gas as at leave the evaporator.

This is the compressor overheat temperature.

This is the difference between the supply and return temperatures.

Next question

Code: VAKL55 According to the requirements of the SOLAS 74 convention, Emergency Diesel Generator (EDG) must take full ratred load no more than:

35 sec.

45 sec.

50 sec.

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Code: OIYQ43 What is a Reefer Container?

Container for Cargo.

Container is a type of shipping container that remains it cargo safe.

Container for transportation of different types of food.

Container is a type of shipping container that remains its cargo at a regulated cool temperature.

Next question

Code: XWRA89 Which of these does not affect the temperature rise of the compressor discharge gases?

Insufficient freon level in the system.

Malfunction of expansion valve.

Malfunction one of two return air sensors.

Compressor malfunction.

Next question

Code: JNZA59 What is the first action if you find a reefer container in not working condition?

Check main circuit breaker position (on/off) and the presence of power supply on each incoming phase with multimeter.

Make sure the serviceability of the main transformer.

Verify presence of “freon gas” in the system.

Call service engineer.

Next question

Code: TMVQ96 What is the correct stowage of the reefer on deck of container vessel?

Motor to alt.

Motor to forward.

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Code: PRUC70 On a container vessel, what must be done as soon as reefer containers have been loaded?

It must be connected to the ship power supply and their setting temperature verified.

Stowage position must be reported to the duty officer.

Setting temperatures must be verified.

Next question

Code: ZXDA17 What is the purpose of the Oil in the refrigerated systems?

To help the refrigerant absorb the heat in the process.

To lubricate the TXV as sometimes it works hard to maintain cooling capacity.

To lubricate the moving parts of the compressor.

To ease the travel of the refrigerated thru the piping.

Next question

Code: YMX879 What is the main signs of an insufficient freon gas level in the refrigerated system that we can easily see on the evaporator coil?

The evaporator coil is frozen after the thermostatic valve at the beginning of the coil.

Insufficient level of freon does not affect the evaporator coil.

The evaporator coil is frozen after the thermostatic valve at the end of the coil.

The pipe before the thermostatic valve is frozen but the evaporator coil is clean.

Next question

Code: UOIK61 Based on pressure measurements, how to determine that the compressor is out of order?

The suction pressure equal to discharge pressure.

The suction pressure is less than the discharge pressure.

The suction pressure greater than the discharge pressure.

Compressor failure will not affect to the system pressure.

Next question

Code: HRFP39 What is the normal suction pressure for compressor?

Depend on the freon gas level in receiver.

No more than 5 bar.

Not less than 5 bar.

Depend on the reefer container working mode and ambient temperature. Technical standards from the manufacturer that are specified in manual.

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Code: VHAX11 What is means “Ambient Temperature”?

Outside temperature.

Maximum possible temperature.

Required temperature for transportation of cargo in reefer container.

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Code: ATQV48 How to prepare reefer container system for safely welding work on the gas pipe?

Switch off power supply and collect freon to receiver.

Switch off power supply and discharge freon to atmosphere.

Switch off power supply and collect freon to the recovery balloon.

Disconnect power supply cable and collect freon to the recovery balloon.

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Code: KGIF52 What is the function of a thermistor in the winding of an evaporator fan electric motor?

Interrupt the operation of the electric motor in case of overheating.

Reads the motor current.

Measures the temperature of the electric motor in case of overheating.

Designed to start the electric motor. It serves to maintain the current on the auxiliary winding of the motor and goes into a shutdown state when the motor is running.

Next question

Code: ODNE18 How will a faulty capacitor of a single phase electrical motor affect its operation?

Motor will start and stop periodically.

The insulation resistance of the motor will decrease.

Motor will not start.

The electric motor of condenser fan will burn out on start.

Next question

Code: DRGO62 What is means “Set Point”?

Port of destination.

Required temperature for transportation of cargo in reefer container.

Required temperature of Chief Officer/Planner.

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