PROPANE FILL CERTIFICATION
PRACTICE TEST WITH COMPLETE
SOLUTIONS 100% CORRECT!!!
Question 1
What are the primary characteristics of raw propane, and how is it modified
for safety?
Answer: Raw propane is a colorless and odorless gas. Because it is
naturally odorless, a commercial odorant (typically Ethyl Mercaptan) is
intentionally added so leaks can be detected. The resulting odor is similar to
rotten eggs or boiling cabbage.
Question 2
What effect do ambient temperatures have on the volume and density of
propane?
Answer: Propane volume rises as temperature rises and falls as
temperature falls. Being temperature dependent:
o Propane expands and becomes less dense as temperature increases.
o Propane contracts and becomes more dense as temperature decreases.
(This dynamic expansion is why containers are filled to a maximum of 80% liquid
volume to prevent overpressurization in warm conditions).
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.
PRACTICE TEST WITH COMPLETE
SOLUTIONS 100% CORRECT!!!
Question 1
What are the primary characteristics of raw propane, and how is it modified
for safety?
Answer: Raw propane is a colorless and odorless gas. Because it is
naturally odorless, a commercial odorant (typically Ethyl Mercaptan) is
intentionally added so leaks can be detected. The resulting odor is similar to
rotten eggs or boiling cabbage.
Question 2
What effect do ambient temperatures have on the volume and density of
propane?
Answer: Propane volume rises as temperature rises and falls as
temperature falls. Being temperature dependent:
o Propane expands and becomes less dense as temperature increases.
o Propane contracts and becomes more dense as temperature decreases.
(This dynamic expansion is why containers are filled to a maximum of 80% liquid
volume to prevent overpressurization in warm conditions).
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.
