Propane Fill Certification Practice Test
Questions with Detailed Verified Answers
Characteristics of Propane ANSWER: is a colorless and odorless gas.
Since propane is odorless, it is intentionally odorized so leaks can be
detected. The odor is similar to rotten eggs.
What affect ambient temperatures have on the expansion of propane
ANSWER: Propane volume rises as temperature rises and falls as
temperature falls. Being temperature dependent, propane becomes
more dense as temperature falls and expands as temperature increases.
The formula used to set the scale of proper filling ANSWER: W.C. (water
capacity) x .42 + T.W. (tare weight)
What affect anhydrous ammonia has on brass ANSWER: NH3 is
corrosive to brass, copper and galvanized components/fittings. When
these components/fittings come in contact with NH3 liquid or vapor,
the metal will corrode and will fail.
The propane procedures for filling an rv ANSWER: Set the propane
meter to zero.
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Connect the motor fuel hose to the tank fill valve.
Open the vent value on the fixed maximum liquid level gauge.
Start the pump and slowly open the hose and valve.
When a steady white mist is emitted, close the hose and valve.
Close the fixed maximum liquid level gauge.
Shut off the pump.
Slowly loosen the filler adapter to prevent any loose propane. Wait until
propane stops venting.
Disconnect and stow the hose assembly once venting has stopped.
Replace the filler valve cap.
Proper procedures to follow in the event of a fire ANSWER: Do not
extinguish fire until leak is stopped.
Small fire- Dry chemical or CO2
Large fire- Water spray or fog
Questions with Detailed Verified Answers
Characteristics of Propane ANSWER: is a colorless and odorless gas.
Since propane is odorless, it is intentionally odorized so leaks can be
detected. The odor is similar to rotten eggs.
What affect ambient temperatures have on the expansion of propane
ANSWER: Propane volume rises as temperature rises and falls as
temperature falls. Being temperature dependent, propane becomes
more dense as temperature falls and expands as temperature increases.
The formula used to set the scale of proper filling ANSWER: W.C. (water
capacity) x .42 + T.W. (tare weight)
What affect anhydrous ammonia has on brass ANSWER: NH3 is
corrosive to brass, copper and galvanized components/fittings. When
these components/fittings come in contact with NH3 liquid or vapor,
the metal will corrode and will fail.
The propane procedures for filling an rv ANSWER: Set the propane
meter to zero.
, 2 | Page
Connect the motor fuel hose to the tank fill valve.
Open the vent value on the fixed maximum liquid level gauge.
Start the pump and slowly open the hose and valve.
When a steady white mist is emitted, close the hose and valve.
Close the fixed maximum liquid level gauge.
Shut off the pump.
Slowly loosen the filler adapter to prevent any loose propane. Wait until
propane stops venting.
Disconnect and stow the hose assembly once venting has stopped.
Replace the filler valve cap.
Proper procedures to follow in the event of a fire ANSWER: Do not
extinguish fire until leak is stopped.
Small fire- Dry chemical or CO2
Large fire- Water spray or fog
