True/False
Indicate whether the sentence or statement is true
or false.
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1.
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Pressure drop in a gas system is due to friction or obstruction of pipes, valves,
fittings, regulators and burners. True or False
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2.
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A
breather vent is distinct from a relief vent and allow the cavity of the air side of a regulator
diaphragm to breathe by letting air in and out as the diaphragm moves within the regulator housing.
True or False
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3.
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Draft
hoods and barometric draft regulators must be located in the same pressure zone as the appliance
combustion chamber. True or False
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4.
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Gas
piping shall not be used as a grounding electrode but must be bonded to the electrical service
grounding electrode system? True or False
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5.
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Gas
piping shall be identified with a yellow label marked GAS every 10 feet? True or False
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6.
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To
determine gas demand you must know the appliance manufacturer’s appliance rating in
BTUH? True or False
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7.
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I can
install a union behind a enclosed wall while installing gas piping? True or False
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8.
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Before any gas piping system is put into use, it must be inspected, tested and
approved. True or False
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9.
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A gas
shutoff can be placed within a furnace plenum? True or False
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10.
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Each
appliance, regardless of type, size or location, must have its own dedicated shutoff valve to isolate
the appliance from its gas supply. True or False
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11.
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Appliance connector lengths shall not exceed 6 feet made out of semi-rigid metallic
tubing and metallic fittings. True or False
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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12.
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An
Oxygen depletion safety shutoff provides protection against _____? a. | Carbon Monoxide
Build-Up | c. | Poor burning
appliance | b. | Low Oxygen levels below 18
percent | d. | All of the
above | | | | |
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13.
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An
appliance that operates with a positive vent static pressure and with a vent gas temperature that is
capable of causing excessive condensate production it the vent is a? a. | Category IV
appliance type | c. | Category I
appliance type | b. | Category III appliance type | d. | Category II appliance type | | | | |
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14.
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The
maximum design operating pressure for piping systems located inside a building shall not exceed
___ pounds per square inch gauge except as noted in the code?
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15.
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The
maximum design operating pressure for piping systems located inside a building using LP Gas shall not
exceed ___ pounds per square inch gauge except as noted in the code?
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16.
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What
is the chemical that adds to corrosion inside a gas piping system? a. | Hydrogen
peroxide | c. | Hydrogen | b. | Hydrogen sulfide | d. | None of the above | | | | |
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17.
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Field
threading of gas piping for a iron pipe size of 3 inch you should have ____ number of threads to be
cut?
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18.
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When
testing the gas pressure for a home service the test duration must be no less than ___
minutes?
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