4.1 PERC Gas
A circular meter index commonly has four dials that record the volume of gas used.
When reading the dials of a circular index, start with the dial _____. - correct
answer-furthest to the right and proceed left.
A leak test is performed after a leak is identified in a system, and it is performed
_____ the test for leakage, pressure test, or leak check. - correct answer-After
A pressure test applies pressure not less than _____ times the proposed maximum
working pressure of the interior piping, but in no case less than _____ psig. - correct
answer-1 1/2 times max and 3 psig
Aboveground tanks with less than _____ gallons water capacity may be placed next
to a building and must be at least _____ ft horizontally from any building opening that
is below the level of discharge. - correct answer-125 gallons
and 5 feet
All of the following are examples of physical defects that would disallow a container
to be refilled: - correct answer-1) Bulging
2) Cracks
3) Damage to the cylinder foot rings
ASME tanks used for LP-gas storage that have a water capacity of 125 gallons or
greater cannot be transported over a public roadway when filled to more than _____
of their water capacity. - correct answer-Must be under 5% water capacity to
transport over public roadways.
, Do you need to install a tracer wire with PE pipe and tubing? - correct answer-Yes,
because PE pipe and tubing are non-conductive and cannot be found by
pipe-locating devices.
Effective system load is used to determine the amount of propane required to
operate appliances at a reduced demand and assumes the customers appliances
_____ - correct answer-Operate at full demand only during typical operating cycles,
for example, during a clothes drying cycle or when cooking.
Also that they do not operate simultaneously.
Flow tests and lock-up tests are typically performed on vapor distribution systems
_____ to determine if the piping system and regulator(s) are sized correctly for the
estimated load and are functioning properly. - correct answer-During start up
For a residential vapor distribution system involving a first- and second-stage
regulator, the highest Btu/hr output capacity for a single first-stage regulator is not
sufficient to meet total gas demand of the system. What is the best solution? -
correct answer-Install two first-stage regulators in a parallel installation.
Frost penetration depth in the soil is important to consider when selecting _____. -
correct answer-Underground tanks
If you are transporting cylinders or tanks containing propane, you must carry a
_____. - correct answer-Shipping papers, a hazmat certificate of registration, and
emergency response information.
A circular meter index commonly has four dials that record the volume of gas used.
When reading the dials of a circular index, start with the dial _____. - correct
answer-furthest to the right and proceed left.
A leak test is performed after a leak is identified in a system, and it is performed
_____ the test for leakage, pressure test, or leak check. - correct answer-After
A pressure test applies pressure not less than _____ times the proposed maximum
working pressure of the interior piping, but in no case less than _____ psig. - correct
answer-1 1/2 times max and 3 psig
Aboveground tanks with less than _____ gallons water capacity may be placed next
to a building and must be at least _____ ft horizontally from any building opening that
is below the level of discharge. - correct answer-125 gallons
and 5 feet
All of the following are examples of physical defects that would disallow a container
to be refilled: - correct answer-1) Bulging
2) Cracks
3) Damage to the cylinder foot rings
ASME tanks used for LP-gas storage that have a water capacity of 125 gallons or
greater cannot be transported over a public roadway when filled to more than _____
of their water capacity. - correct answer-Must be under 5% water capacity to
transport over public roadways.
, Do you need to install a tracer wire with PE pipe and tubing? - correct answer-Yes,
because PE pipe and tubing are non-conductive and cannot be found by
pipe-locating devices.
Effective system load is used to determine the amount of propane required to
operate appliances at a reduced demand and assumes the customers appliances
_____ - correct answer-Operate at full demand only during typical operating cycles,
for example, during a clothes drying cycle or when cooking.
Also that they do not operate simultaneously.
Flow tests and lock-up tests are typically performed on vapor distribution systems
_____ to determine if the piping system and regulator(s) are sized correctly for the
estimated load and are functioning properly. - correct answer-During start up
For a residential vapor distribution system involving a first- and second-stage
regulator, the highest Btu/hr output capacity for a single first-stage regulator is not
sufficient to meet total gas demand of the system. What is the best solution? -
correct answer-Install two first-stage regulators in a parallel installation.
Frost penetration depth in the soil is important to consider when selecting _____. -
correct answer-Underground tanks
If you are transporting cylinders or tanks containing propane, you must carry a
_____. - correct answer-Shipping papers, a hazmat certificate of registration, and
emergency response information.
