EXAM Study guide (Latest
Update) |Questions & Verified
Answers | Grade A | 100 out of 100
What percentage of propane tank capacity is reserved to prevent overpressure from expansion?
20%
What test must be performed each time a system is opened?
Time Pressure Drop
A service shut-off valve should only be closed with
Hands
A Type I (CGA 791) valve should
Never be closed with a POL plastic plug
Gloves must be worn when
filling a propane cylinder
When purging a 20# propane cylinder what is the minimum distance to an ignition source?
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EXAM Study guide (Latest
Update) |Questions & Verified
Answers | Grade A | 100 out of 100
25 feet
An opened outage valve is used
to indicate the maximum liquid level
Backup wrenches are used
to prevent damage to propane connections
When filling a propane container, 25 feet is the
minimum distance to an ignition source
When transporting a DOT propane cylinder you should
install a dust cap
-44 degrees Fahrenheit is
the boiling point of propane
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EXAM Study guide (Latest
Update) |Questions & Verified
Answers | Grade A | 100 out of 100
What is the weight of five liquid gallons of propane?
21 Pounds
How many British Thermal Units are in a pound of liquid propane at 60 degrees Fahrenheit?
21,548
What is the maximum percentage of propane vapor in the atmosphere that will ignite?
9.6%
The chemical that gives propane its odor is
ethel mercaptan
Temperature of a propane container affects the
flow of vapor from the container
What is the maximum lock up regulator pressure?
14 inches water column
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EXAM Study guide (Latest
Update) |Questions & Verified
Answers | Grade A | 100 out of 100
What reduces propane container pressure to 10 PSI?
First stage of a regulator
For each 10 degrees propane liquid is warmed, its volume
increases 1.5 %
What is the approximate number of BTUs in a 20 pound propane cylinder?
345,000
Propane gas is how many times heavier than air?
1.5 times heavier than air
When the pressure in a container is near zero as a result of cooling from us
has outrun the rate of vaporization
Propane gas released into the atmosphere is
invisible