There are three elements required for a fire: fuel, oxygen, and heat. There are four classes of fire based on the type of fuel: Class A involves ordinary combustibles like wood and paper; Class B involves flammable liquids; Class C involves energized electrical equipment; and Class D involves combustible metals. Class K involves cooking oils, trans-fats, or fats. Proper precautions and safety measures must be taken for each class to prevent fires from starting.

2. Each of these three elements must be present at
the same time to have a fire. A fire will burn until
one or more of the elements is removed.
Fuel
Any combustible material – solid, liquid or gas
Heat
Oxygen
The energy necessary to
The air we breathe is
increase the temperature of
about 21% oxygen –
fuel to where sufficient
fire needs only
vapors are given off for
16% oxygen
ignition to occur

4. There are 4 classes of fire:
Class A
Ordinary combustibles or fibrous material, such as
wood, paper, cloth, rubber, and some plastics.
Class B
Flammable or combustible liquids such as gasoline,
kerosene, paint, paint thinners and propane.
Class C
Energized electrical equipment, such as appliances,
switches, panel boxes and power tools.
Class D
Certain combustible metals, such as magnesium,
titanium, potassium, and sodium.
Class K
Cooking oils, trans-fats, or fats

5. To Prevent Fires
Class  Ordinary Combustibles:
• Keep storage and working areas free of trash.
• Place oily rags in covered containers.

6. Class  Flammable liquids or gases:
 Don’t refuel gasoline-powered equipment in a confined space,
in the presence of an open flame, or while the equipment is
hot.
 Keep flammable liquids stored in a tightly closed container and
away from spark producing sources.
 Use flammable liquids only in well ventilated areas.

7. Class  Electrical Equipment:
 Never install a fuse rated higher than specified for the circuit.
 Investigate any appliance or electrical equipment that smells
strange. Unusual odors can be the first sign of a potential fire.
 Utility lights should always have some type of wire guard over
them.

8. Class  Flammable metals:
• Knowledge of the properties of the metals and using good
judgment and common sense will assist you in controlling or
avoiding potential fires/reactions.

9. Class cooking oils, trans-fats, or fats
- fire extinguishers are for fires that involve cooking oils, trans-
fats, or fats in cooking appliances and are typically found in
restaurant and cafeteria kitchens. Geometric symbol (black
hexagon)

11. Ship Fire Fighting Trainer

12. Signs of a fire

14. Fire Fighting Equipment

18. Fire Fighting from Support Ship

19. Fire Fighting Flood Water Can Sink a Ship

31. Damage Control Training, USS BUTTERCUP, Naval Station Newport, RI

32. Damage Control Training, USS BUTTERCUP, Naval Station Newport, RI

33. Damage Control Training, USS BUTTERCUP, Naval Station Newport, RI

34. Damage Control Training, USS BUTTERCUP, Naval Station Newport, RI

35. Damage Control Training, USS BUTTERCUP, Naval Station Newport, RI