Welcome to the website where you can pass online the CES CBT CD-0338 test on the subject «Fresh Water System Sanitation». 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.
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 «Fresh Water System Sanitation». Those questions can be used for competence verification specialist capable of preventing accidental situations related with transporting safety, or also for self-examination.
«Fresh Water System Sanitation» subject includes theoretical and practical information about advanced training for work on any type of vessel. The course offers a comprehensive overview of the principles and practices necessary for maintaining hygienic and efficient water systems on vessels. It combines knowledge with practical skills, ensuring that participants can effectively sanitize and maintain water systems in various maritime environments. The curriculum covers advanced topics such as water treatment technologies, chemical and biological disinfection methods and the prevention of biofilm formation. Hands-on training sessions provide real-world experience in testing water quality, using specialized equipment and troubleshooting common issues. Emphasis is placed on adhering to international maritime health and safety standards, as well as implementing environmentally friendly practices. The course also includes emergency response protocols and strategies for maintaining water system integrity during long voyages. Upon completion, participants will be certified to manage fresh water systems on any type of vessel, enhancing their professional capabilities and ensuring the health and safety of all onboard.
On this site Crew Evaluation System Test on the subject «Fresh Water System Sanitation» contains 30 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.
Choose the regime, in which you want to pass CES test:
Training
Exam
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* Some questions may have more than 1 correct answer.
After maintenance and inspection of a potable water tank, how can the tank be sanitised quickly without filling it with water? Select the ONE correct answer.
The surfaces should be coated in a solution containing chlorine at 20 ppm.
The surfaces should be coated in a solution containing chlorine at 50 ppm.
The surfaces should be coated in a solution containing chlorine at 200 ppm.
The surfaces should be coated in a solution containing chlorine at 500 ppm.
How can a seafarer catch Legionnaires’ disease on a vessel? Select the ONE correct answer.
By drinking contaminated water.
By breathing infected aerosols.
By getting contaminated water on the skin.
By human contact.
How could a person become sick after drinking a vessel’s potable water supply? Select the TWO best answers.
The vessel’s disinfection plant is not operating correctly.
Their immune system was too low.
The water has not been chemically treated correctly.
They have drunk too much of it.
How is a virus different to a bacterium? Select the ONE best answer.
A virus is not a living organism.
A virus causes a worse illness than bacteria.
A virus is larger than bacteria.
A virus is made up of a string of bacteria.
How often should the water in a regularly used leisure pool, as found on a passenger vessel, be tested for contaminants and chlorine levels? Select the ONE correct answer.
Often, particularly when there are children using it.
Once a day.
It should be continuously tested.
Once every hour.
How severe can water borne illnesses be? Select the ONE best answer.
They are usually not that severe.
They will only give people diarrhoea.
They will usually stop people working.
They can cause death or disability.
How should a calorifier be sanitised? Select the ONE best answer.
By following the manufacturer’s advice.
Drain the water out and flush it with detergent.
Fill it with a solution containing chlorine at 500 ppm.
Heat the water in it up to 100 degrees Celsius.
How should a vessel’s air conditioning system be maintained, to keep it free from the Legionella bacteria? Select the ONE correct answer.
At a temperature above 25 degrees Celsius.
Clean, but with some residual moisture in the system.
The system should be left alone, as activity releases any bacteria present.
Clean, free from scale and sludge.
How should shower heads and taps be disinfected? Select the ONE correct answer.
By using a chlorinated solution with 50 ppm concentration.
By using a chlorinated solution with 200 ppm concentration.
With a standard detergent or cleaning product.
With tap water which is disinfected by the system used on board.
If a potable water tank has been entered for inspection, what should happen to it before it is put back into use? Select the ONE best answer.
It should be cleaned with a standard chemical detergent before filling.
It should be closed up and disinfected at 5 ppm chlorine before use.
It should be closed up and disinfected at 50 ppm chlorine before use.
It should be filled with fresh water, and then pumped out to clean the tank.
What are the consequences to a vessel operator of water borne illness on board one of their vessels? Select the ONE best answer.
None because the illness will be cleared up.
Delays, costs and a possible damaged reputation.
The crew refuse to sail on the vessel.
The loss of a quantity of potable water.
What contaminants are likely to be found in a leisure pool on a vessel? Select the ONE best answer.
Those originating from people.
Chemicals from grey water treatments.
Molluscs that were brought with the water when it was bunkered.
Pesticides that are washed off the land.
What does the World Health Organisation recommend should be sanitised on a regular basis? Select the ONE best answer.
Any object that a person contacts.
Shower heads and sink taps, each month.
Swimming pools and spa bath waters, daily.
Taps and toilet flush handles, on a weekly basis.
What happens when a vessel arrives with severe sickness on board? Select the TWO best answers.
Sick people will immediately be taken to hospital on arrival.
The port health authorities will attend upon arrival.
Nobody will want to go near it.
The cargo operation will immediately start.
What is the most likely way that a contaminated aerosol causes infection in a person? Select the ONE best answer.
The aerosol contaminates a person’s food.
The aerosol contaminates the vessel’s water supply.
Through an open cut in the skin.
A person breathes in the aerosol.
What is the only type of water that should be supplied to a food preparation area? Select the ONE correct answer.
Grey water.
Salt water.
Potable water.
Untreated fresh water.
What is the recommended cleaning interval for a shower head? Select the ONE correct answer.
Every 3–6 months.
Every 4 weeks.
Every week.
Yearly.
What regular maintenance is needed for a potable water tank? Select the ONE correct answer.
It should be opened up, flushed and disinfected.
It should be re-filled with super chlorinated water and left for 12 days.
Nothing, as it always contains potable water.
The water level should be maintained at least half-full.
What should a crew member ensure for water hygiene, when it is bunkered from ashore? Select the ONE best answer.
That the correct grade of water is supplied to the vessel.
That the holding tank does not overflow.
That the supply hose is clean and flushed through.
That the supply hose is well secured to stop it flailing around.
What should happen regularly to the surfaces of a whirlpool and spa pool? Select the TWO correct answers.
The surfaces should be physically cleaned.
The surfaces should be super chlorinated.
The surfaces should be covered in a non-skid coating.
The surfaces should be regularly painted.
What should happen to the water used in a leisure pool to keep it clean and free from debris? Select the ONE correct answer.
It should be changed every week.
It should be circulated through the hydrophore.
It should be totally changed daily.
It should be circulated through filters.
What sort of disinfection should be used to maintain the quality of leisure pool water? Select the ONE correct answer.
Some form of chemical protection.
A super strength chemical to protect the users.
UV and silver ionisation combined.
UV disinfection is adequate.
What type of water should always be used in a leisure facility on a vessel? Select the ONE correct answer.
Fresh water.
Potable water.
Manufactured water.
Salt water.
Which ONE of the following is NOT included in vessel sanitation records?
Treatments given to boiler feed water.
Actions taken to sanitise shower heads and taps.
All areas where water borne infections may be found.
Treatment given to potable water.
Which answer best completes the following statement? In a vessel’s accommodation, bacteria can easily grow …
… because the crew do not keep the accommodation very clean.
… because there is often moisture and an ideal temperature.
… because there is no direct sunlight to kill it.
… because there is still, dry air.
Which answer best completes the following statement? When a fresh water generator is being used on a vessel …
… the automatic water testing system should be checked occasionally with a manual test.
… it uses a lot of energy, so the water is very expensive compared to shore water.
… there is no need to treat the water made, as it is pure.
… there will never be a need to take fresh water from the shore.
Why can a calorifier be a breeding ground for bacteria? Select the ONE correct answer.
Because there is a range of temperatures ideal for bacterial growth.
Because the water at the bottom can become stagnant.
Because the water in a calorifier is very cold.
Because the water in a calorifier is very hot.
Why do filters in a potable water system have to be opened up and cleaned regularly? Select the ONE best answer.
Because the vessel procedures demand it.
Because they can be a breeding ground for bacteria.
To check that the filter is not damaged.
To make sure they are not blocked.
Why is it important to have a planned maintenance system in operation for fresh water generators? Select the ONE best answer.
So that the water made is of excellent quality.
So that the company does not have to buy bottled water.
To make sure that the generator lasts a long time.
To stop the crew complaining about the taste of the tap water.
Why is it most important to keep air conditioning systems in a clean condition? Select the ONE best answer.
To stop the air flowing through it spreading bacteria.
To ensure that it does not get blocked up.
To ensure that the cooling system works when a vessel is in the Tropics.
To stop the air that is blown into the accommodation from smelling.
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