CETP 4.1 Designing & Installing Exterior
Vapor Distribution Systems Questions
with Correct Answers
is the sum of the rated btu/hr input for each propane appliance connected to t
he vapor distribution system. - CORRECT ANSWER -Total gas demand
Where do you record the ratings of the btu/hr input for a customers current appliances? -
CORRECT ANSWER -Customer gas appliance use profile form
is used to determine the amount of propane required to operate appliances at
a reduced demand, and assumes full cycle happen typically, and don't operate simultaneously. -
CORRECT ANSWER -Effective system load
Most critical issues when selecting a container: - CORRECT ANSWER -
Customer's propane demand, above or underground, and vaporization.
When a container is sized for vapor service, the goal is to ensure the is hig
her than the demand of propane. - CORRECT ANSWER -Vaporization rate
when selecting/sizing a tank, it's important to consider if it will be or
. - CORRECT ANSWER -Above ground, underground
For underground tanks, it's important to consider and -
CORRECT ANSWER -Soil temperature, frost penetration
When sizing a container, it is important to consider the most lite conditions the container will op
erate in. T/F? - CORRECT ANSWER -False
, When determining container size, the temperature used for tank sizing should be the lowest te
mperature anticipated. T/F? - CORRECT ANSWER -True
NFPA 58 states all containers installed/filled at a customers home must be ft in any direction
from combustibles. - CORRECT ANSWER -10
NFPA 58 states all containers installed/filled at a customers home must be ft in any direction
from an above ground tank/ flammable liquid. - CORRECT ANSWER -20
NFPA 58 states all containers filled on site must be positioned so the fill connection, relief valve,
and liquid level gauge vent are ___ ft from sources of ignition. - CORRECT ANSWER -10
For DOT cylinders, 500+ gallons of total water capacity on a customers property must be ft o
r further from building. - CORRECT ANSWER -25
Above ground tanks with less than 125g water capacity may be placed next to a building and mu
st be ft away from any discharge. - CORRECT ANSWER -5
are the most common method used to join steel and wrought iron pipes in
residential/small commercial installs. - CORRECT ANSWER -Threaded fittings
Acceptable types of fittings include: - CORRECT ANSWER -
Steel, malleable iron, ductile iron, press-connect
can be joined using manufacturer prescribed procedures like heat fusion, or mec
hanical fittings. - CORRECT ANSWER -Polyethylene (PE) pipe
Vapor Distribution Systems Questions
with Correct Answers
is the sum of the rated btu/hr input for each propane appliance connected to t
he vapor distribution system. - CORRECT ANSWER -Total gas demand
Where do you record the ratings of the btu/hr input for a customers current appliances? -
CORRECT ANSWER -Customer gas appliance use profile form
is used to determine the amount of propane required to operate appliances at
a reduced demand, and assumes full cycle happen typically, and don't operate simultaneously. -
CORRECT ANSWER -Effective system load
Most critical issues when selecting a container: - CORRECT ANSWER -
Customer's propane demand, above or underground, and vaporization.
When a container is sized for vapor service, the goal is to ensure the is hig
her than the demand of propane. - CORRECT ANSWER -Vaporization rate
when selecting/sizing a tank, it's important to consider if it will be or
. - CORRECT ANSWER -Above ground, underground
For underground tanks, it's important to consider and -
CORRECT ANSWER -Soil temperature, frost penetration
When sizing a container, it is important to consider the most lite conditions the container will op
erate in. T/F? - CORRECT ANSWER -False
, When determining container size, the temperature used for tank sizing should be the lowest te
mperature anticipated. T/F? - CORRECT ANSWER -True
NFPA 58 states all containers installed/filled at a customers home must be ft in any direction
from combustibles. - CORRECT ANSWER -10
NFPA 58 states all containers installed/filled at a customers home must be ft in any direction
from an above ground tank/ flammable liquid. - CORRECT ANSWER -20
NFPA 58 states all containers filled on site must be positioned so the fill connection, relief valve,
and liquid level gauge vent are ___ ft from sources of ignition. - CORRECT ANSWER -10
For DOT cylinders, 500+ gallons of total water capacity on a customers property must be ft o
r further from building. - CORRECT ANSWER -25
Above ground tanks with less than 125g water capacity may be placed next to a building and mu
st be ft away from any discharge. - CORRECT ANSWER -5
are the most common method used to join steel and wrought iron pipes in
residential/small commercial installs. - CORRECT ANSWER -Threaded fittings
Acceptable types of fittings include: - CORRECT ANSWER -
Steel, malleable iron, ductile iron, press-connect
can be joined using manufacturer prescribed procedures like heat fusion, or mec
hanical fittings. - CORRECT ANSWER -Polyethylene (PE) pipe
