Hillndale Volunteer Fire Department
and Cross Creek Townships since 1948
Do not store propane cylinders indoors,
including in a garage.
Propane Safety Page
This information is provided as a general reference.
Unfortunately, no set of actions can eliminate the chance of fire,
injury, or death.
Hillndale VFD is not responsible for any misinterpretation or misuse
of this information.
Facts about Propane:
Propane's chemical formula is C3H8.
Propane gas is heavier than air, and will accumulate in low areas if released.
The odor associated with propane is caused by a commercial odorant that
is added to aid in leak detection.
Although not poisonous, propane can be an asphyxiant if enough oxygen is
Propane's flammability range in air is from 2.2% to 9.6%. Higher or lower
concentrations in air will not burn.
Propane is purchased and stored as a liquid under pressure. When
the pressure on the liquid is reduced, such as when the container valve
is opened, a portion of the liquid changes to gas.
Liquid propane will expand to 270 times its previous volume when changing
to a gas. This is 17 times greater than the water to steam expansion
ratio. Thus a small volume of liquid propane will convert to a large
quantity of gas.
Propane tanks should only be filled to 80% capacity with liquid to allow
for the vapor expansions and contractions that occur with temperature changes.
When changing from the liquid to gas state, propane can cause frostbite
if it comes in contact with the skin.
Propane Safety Tips:
Cylinders must be oriented so that the vapor space is in contact with the
pressure relief valve. This means the cylinder must be transported
and stored in the upright position.
During transport container outlets should be capped or plugged to prevent
leaks in case of valve failure.
Never test for propane leaks with an open flame such as a match or lighter.
Do not store propane cylinders indoors, including in a garage. Cylinders
should be stored in a well ventilated place outdoors, off the ground, on
a noncombustible surface, away from sources of ignition, and with outlet
caps or plugs in place.
Never use a damaged, corroded, or leaking cylinder.
Keep propane grills and appliances clean and well maintained. Keep
grill lid open when lighting.
If a fire occurs near a propane cylinder or tank, get at least 1000 feet
away immediately. Call the fire department and be sure to tell the
dispatcher about the possibility of propane involvement.
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Never test for a propane leak
with an open flame.