AFF exit exam questions and answers — Set 9 — Advanced Fire Fighting
Set 9 of the Advanced Fire Fighting (AFF) exit exam bank — 30 of 517 questions, with the correct option marked and a one-line explanation for every one. Read it end to end, jump to a single set, or search it — then sit the same bank as a timed paper. The real DG Shipping exit exam is 30 marks with 15 to pass.
These are the bank's original groupings. Practising deals the whole bank out again every time you reshuffle, so a practice “Set 3” is a different 30 questions each time — the set numbers below are the source file's, and are only used here so the key stays navigable. Options are listed in their original order with fixed letters; when you practise, those move too.
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Set 9 — 30 AFF exit exam questions with answers
1. When compared to a high-expansion foam, a low-expansion foam will ____.
- A. Be drier
- B. Be more heat resistant
- C. Cling to vertical surfaces
- D. Be lighter
2. Which extinguishing agent is best for use on a magnesium fire?
- A. Water
- B. Sand
- C. CO2
- D. Dry chemical
3. Which extinguishing agent will absorb the most heat?
- A. Water
- B. CO2
- C. Dry chemical
- D. Foam
4. What is the most vulnerable part of the fire main system?
- A. The fire pump
- B. Exposed hard piping
- C. The hydrant valve
- D. The fire hose
5. As per SOLAS, what is the minimum number of portable fire extinguishers to be carried in accommodation, service spaces and control stations of a cargo ship of 1,000 GT and upwards?
- A. 1
- B. 4
- C. 5
- D. 3
6. When fighting a fire in an enclosed space, the hose team should crouch as low as possible to ____.
- A. Protect themselves from smoke
- B. Obtain the best available air
- C. Allow the heat and steam to pass overhead
- D. All of the above
7. The most likely location for a liquid cargo fire to occur on a tanker would be ____.
- A. In the midships house
- B. At the main deck manifold
- C. At the vent header
- D. In the pump room
8. To get low-velocity fog from an all-purpose nozzle, you would ____.
- A. Attach an applicator to the solid stream outlet on the nozzle
- B. Attach an applicator to the nozzle in place of the high-velocity nozzle tip
- C. Attach the high-velocity nozzle tip to the fog outlet of the nozzle
- D. Simply move the handle to the vertical position on the nozzle
9. To prevent the spread of fire by conduction you should ____.
- A. Cool the bulkheads around the fire
- B. Remove combustibles from direct exposure
- C. Close all openings to the area
- D. Shut off all electric power
10. The spread of fire is prevented by ____.
- A. Heating surfaces adjacent to the fire
- B. Removing combustibles from the endangered area
- C. Increasing the oxygen supply
- D. All of the above
11. What is an advantage of water fog or water spray over a straight stream of water in fighting an oil fire?
- A. It has a smothering effect on the fire
- B. It requires less water to remove the same amount of heat
- C. It gives more protection to firefighting personnel
- D. All of the above
12. The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to ____.
- A. A difference in water pressure
- B. The method of breaking up the water stream
- C. The length of the applicator
- D. All of the above
13. One advantage of the all-purpose nozzle is that it ____.
- A. Can fit any size hose
- B. Converts a stream of water into a fog
- C. Increases the amount of water reaching the fire
- D. Can spray two streams of water at the same time
14. You are tending the lifeline of a person who has entered a compartment wearing a breathing apparatus. How many tugs of the lifeline mean "Are you all right?"
- A. One
- B. Two
- C. Three
- D. Four
15. A serious fire has been isolated in the engine room. You would ____.
- A. Wait for it to burn itself out
- B. Open the vents to let the smoke out
- C. Spray cooling water on bulkheads of the adjacent compartments
- D. Enter to extinguish the fire with a water extinguisher
16. You are in a tank wearing a self-contained breathing apparatus and you desire to return topside. How many tugs of the lifeline mean to take up the slack?
- A. One
- B. Two
- C. Three
- D. Four
17. When the bypass valve of a self-contained breathing apparatus is opened, the mainline valve should be ____.
- A. Completely open
- B. Completely closed
- C. Pinched to check the air flow
- D. Immediately disconnected
18. The spray of water in low-velocity fog will have ____.
- A. Greater range than high-velocity fog
- B. Lesser range than high-velocity fog
- C. About the same range as high-velocity fog
- D. Greater range than a solid stream
19. When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent ____.
- A. Air from contacting the oil vapours, permitting re-ignition
- B. Boiling of the heated oil
- C. Spontaneous combustion below the surface
- D. Toxic fumes from escaping to the surface
20. The ship is divided into main vertical and horizontal zones by thermal and structural boundaries in order ____.
- A. To improve stability
- B. To improve and contain fire safety
- C. To reduce the cost of construction
- D. None of the above
21. Violent flames and heavy black smoke are typical of which sort of fire?
- A. Wood fire
- B. Paper fire
- C. Fuel oil fire
- D. Electrical fire
22. In pump rooms and pipe tunnels, flameproof electric light fittings are generally fitted. This means that ____.
- A. The fitting is completely gas-tight and no gas can come into contact with the bulb and electrical connections
- B. Gas may enter, but if an explosion takes place inside, the fitting is strong enough to contain it without igniting the surrounding atmosphere
- C. The electrical supply will disconnect automatically in case of fire
- D. Even if a fire occurs, it will not consume the fitting
23. A portable cartridge-type dry chemical fire extinguisher discharges by ____.
- A. Gravity when the extinguisher is turned upside down
- B. Pressure from a small CO2 cartridge on the extinguisher
- C. Air pressure from a hand pump attached to the extinguisher
- D. Pressure from the reaction when water is mixed with the chemical
24. What is fuel's role in making a fire?
- A. It is the combustible material that burns
- B. It is the food that gives your body energy
- C. It is one thing you do not need to make a fire
- D. None of these
25. An aluminium powder fire is classified as class ____.
- A. A
- B. B
- C. C
- D. D
26. In case of fire on an electrical motor, the first thing to do is ____.
- A. Call the electrician
- B. Extinguish the fire by water spray
- C. Sound the alarm, stop the motor and extinguish using CO2
- D. Extinguish using a foam extinguisher
27. A fire hose has a ____.
- A. Female coupling at the nozzle end and a male coupling at the hydrant end
- B. Female coupling at both ends
- C. Male coupling at both ends
- D. Male coupling at the nozzle end and a female coupling at the hydrant end
28. All of the following are part of the fire triangle EXCEPT ____.
- A. Fuel
- B. Electricity
- C. Oxygen
- D. Heat
29. One of the limitations of foam as an extinguishing agent is that foam ____.
- A. Cannot be made with salt water
- B. Is heavier than oil and sinks below its surface
- C. Is corrosive and a hazard to fire fighters
- D. Conducts electricity
30. A fire hose with a nozzle attached must be connected to each hydrant except when exposed to heavy weather or when the ____.
- A. Fire pumps are used for purposes other than supplying water to the fire main
- B. Fire hose might be damaged by cargo operations
- C. Fire main system is not charged
- D. Vessel is in port
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