Fire Fighting

18. Dry chemical extinguishers may be used on which classification of fires? a. C only b. B or C Class fires c. A only d. B only

*b. B or C Class fires Dry chemical can be used on A, B, or C fires as marked on the extinguisher

26. Size I and II extinguishers are designated as ___________________________. a. semi-portable b. portable c. compact d. fixed

*b. portable Extinguishers I, II, & III are considered to be portable and capable of being carried to the fire

3. During a Coast Guard inspection all carbon dioxide fire extinguishers aboard will be _________________. a. sent ashore to an approved service facility b. checked for pressure loss c. discharged and recharged d. weighed

*d. weighed

9) A fire in a pile of linen is a class . A. A B. B C. C D. D

A. A Class A fires involve flammable materials that produce ash. Fuel Sources: wood, cloth, paper, rubber, certain plastics

34) Which extinguishing agent is most likely to allow reflash as a result of not cooling the fuel below its ignition temperature? A. CO2 B. Water stream C. Water spray D. Foam

A. CO2 CO2 is not an effective cooling agent; it works by smothering and replacing O2

28) The disadvantage of using CO2 is that the . A. CO2 does not cool the fire B. cylinders are regulated pressure vessels C. CO2 is not effective on class "B" fires D. CO2 is not effective on class "C" fires

A. CO2 does not cool the fire

8) Fires are grouped into what categories? A. Class A, B, C, and D B. Type 1, 2, 3, and 4 C. Combustible solids, liquids, and gases D. Flammable solids, liquids, and gases

A. Class A, B, C, and D

37) What should be your FIRST action if you discover a fire aboard ship? A. Sound the alarm. B. Attempt to put out the fire. C. Confine it by closing doors, ports, vents, etc. D. Call the Master.

A. Sound the alarm.

24) Fire hose couplings . A. are made of bronze, brass, or soft alloy metals B. should be painted red in order to identify hose lengths C. are specially hardened to prevent crushing D. should be greased frequently

A. are made of bronze, brass, or soft alloy metals

30) All portable fire extinguishers must be capable of being A. carried by hand to a fire B. carried or rolled to a fire C. recharged in the field D. used on class "B" fires

A. carried by hand to a fire

6) Ventilation systems connected to a compartment in which a fire is burning are normally closed to prevent the rapid spread of the fire by . A. convection B. conduction C. radiation D. spontaneous combustion

A. convection

7) The spread of fire is prevented by . A. cooling surfaces adjacent to the fire B. leaving combustibles in the endangered area C. increasing the oxygen supply D. All of the above

A. cooling surfaces adjacent to the fire

2) All of the following are part of the fire triangle EXCEPT A. electricity B. fuel C. oxygen D. heat

A. electricity

23) A fire hose with a nozzle attached must be connected to each hydrant except when exposed to heavy weather or when the . A. fire hose might be damaged by cargo operations B. vessel is in port C. fire-main system is not charged D. fire pumps are used for purposes other than supplying water to the fire main

A. fire hose might be damaged by cargo operations

16) The most effective cooling agent among those normally used to fight fires is . A. water fog or spray B. chemical foam C. mechanical foam D. carbon dioxide

A. water fog or spray Water absorbs the most heat and is therefore most effective cooling agent

22) The size of fire hydrant hose connections on a cargo vessel must be either 1-1/2 inches or . A. 1 inch B. 2-1/2 inches C. 3 inches D. 3-1/2 inches

B. 2-1/2 inches

11) A galley grease fire would be classified as which class of fire? A. A B. B C. C D. D

B. B Class B fires involve flammable liquids, gasses, greases etc.

10) The class of fire on which a blanketing effect is essential is class . A. A B. B C. C D. D

B. B Class B fires involve flammable liquids/gases etc. Smothering cuts off O2 and vapor

12) What is the primary hazard, other than fire damage, associated with a class C fire? A. Possibility of reflash B. Electrocution or shock C. Explosion D. Flashover

B. Electrocution or shock

40) When fighting an oil or gasoline fire in the bilge, which of the following should NOT be used? A. Foam B. Solid stream water nozzle C. All-purpose nozzle D. Carbon dioxide

B. Solid stream water nozzle Solid stream can splash burning liquids and spread the fire

33) Which action is routinely performed at the annual servicing and inspection of a dry chemical cartridge-operated portable fire extinguisher? A. Test the pressure gauge for correct reading. B. Weigh the cartridge. C. Replace the dry chemical. D. Pressure test the discharge hose.

B. Weigh the cartridge.

25) The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to . A. shield fire fighters from radiant heat B. break up burning material C. get the most water possible on the fire D. drive heat and smoke ahead of the fire fighters

B. break up burning material

29) Fixed CO2 systems would not be used on crew's quarters or A. the paint locker B. spaces open to the atmosphere C. cargo holds D. the engine room

B. spaces open to the atmosphere CO2 works most effectively in confined spaces

19) How does foam extinguish an oil fire? A. By cooling the oil below the ignition temperature B. By removing the fuel source from the fire C. By excluding the oxygen from the fire D. By increasing the weight of the oil

C. By excluding the oxygen from the fire

31) What is the most important characteristic of the extinguishing agent in fighting a class "C" fire? A. Weight B. Temperature C. Electrical non-conductivity D. Cost

C. Electrical non-conductivity

13) A fire starting by spontaneous combustion can be expected in which condition? A. Paints, varnish, or other liquid flammables are stowed in a dry stores locker. B. Inert cargoes such as pig iron are loaded in a wet condition. C. Oily rags are stowed in a metal pail. D. Clean mattresses are stored in contact with an electric light bulb.

C. Oily rags are stowed in a metal pail. Spontaneous combustion is most likely to occur in rags soaked in linseed oil.

38) When attempting to enter a compartment containing a fire, which method of applying water is best? A. High-velocity fog stream directed toward the overhead B. Straight stream directed into the center of the fire C. Sweeping the compartment with a fog stream D. Solid stream directed toward the overhead

C. Sweeping the compartment with a fog stream

15) Which extinguishing agent will absorb the most heat? A. CO2 B. Foam C. Water D. Dry chemical

C. Water

14) Spontaneous combustion is caused by . A. an outside heat source heating a substance until it ignites B. conduction of heat through a wall of material to the substance C. chemical action within a substance D. All of the above

C. chemical action within a substance Oily rags stored in a pile that is open to the atmosphere are a hazard because they may spontaneously heat and catch fire.

18) Foam extinguishes a fire mainly by . A. cooling B. chemical action C. smothering D. inerting the air

C. smothering

32) Dry chemical extinguishers may be used on what class of fires? A. A only B. B only C. B and C only D. A, B or C as marked on the extinguisher

D. A, B or C as marked on the extinguisher

17) 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 fire fighting personnel. D. All of the above

D. All of the above

27) Before using a fixed CO2 system to fight an engine room fire, you must A. secure the engine room ventilation B. secure the machinery in the engine room C. evacuate all engine room personnel D. All of the above

D. All of the above

3) Fire may be spread by which means? A. Conduction of heat to adjacent surfaces B. Direct radiation C. Convection D. All of the above

D. All of the above

26) Which statement is TRUE concerning carbon dioxide? A. It is heavier than air. B. It is non-conductive. C. It is used on class B and C fires. D. All of the above are true.

D. All of the above are true CO2 heavier than air and flows down over a fire-smothers and removes O2 (makes it good for Class B); non-conductive makes it good for class C fires

1) Removing which will extinguish a fire? A. Nitrogen B. Carbon dioxide C. Sodium D. Oxygen

D. Oxygen

35) How do you operate a portable CO2 fire extinguisher? A. Point the horn down. B. Turn cylinder upside-down. C. Break the rupture disc. D. Pull pin, squeeze grip.

D. Pull pin, squeeze grip.

21) 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

D. The fire hose

20) 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

D. conducts electricity

4) To prevent the spread of fire by conduction you should A. shut off all electrical power B. close all openings to the area C. remove combustibles from direct exposure D. cool the bulkheads around the fire

D. cool the bulkheads around the fire

5) Convection spreads a fire by . A. the transfer of heat across an unobstructed space B. burning liquids flowing into another space C. transmitting the heat of a fire through the ship's metal D. heated gases flowing through ventilation systems

D. heated gases flowing through ventilation systems

39) A fuel line breaks, sprays fuel on the hot exhaust manifold, and catches fire. Your FIRST action should be to A. batten down the engine room B. start the fire pump C. apply carbon dioxide to the fire D. shut off the fuel supply

D. shut off the fuel supply Class B fire-shut off fuel supply

36) You can determine that a CO2 fire extinguisher is fully charged by . A. looking at the gauge B. checking the nameplate data C. weighing by hand D. weighing on a properly calibrated scale

D. weighing on a properly calibrated scale

What are the 3 sides to the fire triangle?

Fuel Oxygen Heat

13. When fighting an oil or gasoline fire in the bilge, which of the following should not be used? a. Solid stream of water. b. Foam. c. High-velocity fog. d. Low-velocity fog.

a. Solid stream of water. solid stream of water can cause burning liquid to splash and spread fire

15. The straight stream setting of an all-purpose nozzle is used in fighting a class A fire to ________________. a. break up burning material b. drive heat and smoke ahead of the fire fighters c. shield fire fighters from radiant heat d. get the most water possible on the fire

a. break up burning material

55. Before using a fixed CO2 system to fight an engine room fire, you must ______________________. a. secure the machinery in the engine room b. notify the Captain c. sound the alarm for 2-minutes d. open all ventilation ports

a. secure the machinery in the engine room Before using a fixed CO2 system to fight an engine room fire, you must secure the engine room ventilation, secure the machinery in the engine room, and evacuate all engine room personal.

6. Which condition can cause Spontaneous combustion? a. Conduction of heat through a wall of material until it ignites b. A chemical action within a substance c. An outside heat source heating a substance until it ignites d. The use of an unprotected drop-light bulb

b. A chemical action within a substance

5. Removing which element below will extinguish a fire? a. Nitrogen b. Oxygen c. Sodium d. Carbon dioxide

b. Oxygen Removing fuel source rarely extinguishes fire

12. When discharging a portable Carbon Dioxide (CO2) fire extinguisher, you should not hold the horn of the extinguisher because the horn ____________________________. a. is placed directly in the flames b. becomes extremely cold c. could come off in your hands d. becomes extremely hot

b. becomes extremely cold

59. Foam is a very effective smothering agent and _____________________. a. can be used to combat combustible metal fires b. it provides cooling as a secondary effect c. works well on extinguishing Class C fires d. works well on extinguishing electrical fires

b. it provides cooling as a secondary effect

28. Fire extinguishers are numbered by size I through V, with I being __________________. a. used for electrical fires only b. the smallest c. the most accessible d. the most effective

b. the smallest

17.In addition to the heat, fuel, and oxygen what is required to have fire? a.Electricity b.Chain Reaction c.Pressure d.Smoke

b.Chain Reaction Fire tetrahedron

29. A fire in the trash is made up of paper waste. What class fire is this? a. D b. B c. A d. C

c. A Class A fire

33. Convection spreads a fire by ... a. Transmitting the heat of a fire through the ship's metal. b. The transfer of heat across an unobstructed space. c. Heated gases flowing through ventilation systems. d. Burning liquids flowing into another space.

c. Heated gases flowing through ventilation systems.

35. Each crewmember has an assigned firefighting station. This assignment is shown on the ... a. Fire fighting plan. b. Certificate of Inspection. c. Muster list. d. Shipping articles.

c. Muster list.

8. Which method of heat transmission does not require physical contact for fire to be spread between decks, bulkheads, or other surfaces? a. Conduction b. Convection c. Radiation d. Transfer Modulation

c. Radiation 10. The disadvantage of using CO2 is that the ________________________. a. cylinders are regulated pressure vessels b. CO2 does not cool the fire c. C02 is not effective on class "C" fires d. C02 is not effective on class "B" fires *b. CO2 does not cool the fire

7. Foam effectively extinguishes a fire mainly by __________________. a. Inerting the air b. Cooling c. Smothering d. Chemical action

c. Smothering

1. Which of the statement below describes the primary process by which fires are extinguished by dry chemical? a. The stream of dry chemical cools the fire. b. The dry chemical smothers the fire. c. The dry chemical powder extinguishes the flames by breaking the combustion chain. d. The dry chemical removes the fuel.

c. The dry chemical powder extinguishes the flames by breaking the combustion chain.

16. A squeeze-grip type carbon-dioxide portable fire extinguisher has been partially discharged. It must ____________________. a. replaced in its proper location if weight loss is no more than 15% b. replaced in its proper location regardless of weight c. labeled empty and recharged as soon as possible d. replaced in its proper location if weight loss is no more than 25%

c. labeled empty and recharged as soon as possible

6. An aluminum powder fire is classified as class _______________________. a. Class C b. Class A c. Class B d. Class D

d. Class D Class D fires involve combustible metals Fuel Sources: Na, K, Mg, Ti Only specifically recommended extinguishing agents should be used to put out Class D

14. Extinguishers with a gross weight of more than 55 pounds when fully charged are considered ___________________________. a.compact b.fixed c. portable d.semi-portable

d.semi-portable

The fire tetrahedron components are:

fuel, oxygen, heat, chemical reaction