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Gas Fitters Exam (Edited)- Questions and Answers
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Gas Fitters Exam (Edited)- Questions and Answers
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Gas Fitters Exam (Edited)- Questionsand Answers
How do we isolate appliances and equipment that are not designed for pressures as high as
those used in the pressure test? Correct Ans-8.1.3.4 Such appliances or equipment shall be
isolated from the piping system bydisconnecting them and capping the outlet(s)
If a mechanical gauge is used with the pressure test scale is allowed to be? Correct Ans-
8.1.4.1 Not greater than 5 times the test pressure
What is the required test pressure? Correct Ans-8.1.4.2 No less than 11∕2 times the
proposed maximum working pressure, but not less than 3 psi (20 kPa), irrespective of design
pressure
How long should a pressure test last for piping with a volume greater than 10 cu ft.? Correct
Ans-8.1.4.3 Not less than 1∕2 hour for each 500 ft3 (14 m3) of pipe volume or fraction thereof
How long should a pressure test last for piping with a volume less than 10 cu ft.? Correct
Ans-8.1.4.3 10 minutes minimum, 24 hours maximum
Do we ever need to determine the volume of a residential piping system to figure out how long
the test duration needs to be? Why or why not? Correct Ans-8.1.4.3 A system in a single-
family dwelling, the test duration shall be a minimum of 10 minutes
How much is the pressure allowed to drop on a gas piping system when the pressure drop
cannot be attributed to a change in temperature? Correct Ans-8.1.5.1 0 PSIg (No change in
pressure that is not attributed to a change in temperature is allowed)
What is the maximum test duration regardless of volume? Correct Ans-8.1.4.3 24 Hours
,Where in the codebook can I find the formula to figure out how much the pressure is allowed to
change due to a change in temperature? Correct Ans-Annex B 7.5
If the pressure rises in a gas piping system are we required to use the formula to prove to the
inspector that the system does not have a leak and is gastight? Why or why not? Correct
Ans-If pressure rises it proves that the piping is gas tight.
If the pressure test indicates a leak how should the leak be located? What shall not be used?
Correct Ans-8.1.5.2 By means of an approved gas detector, a noncorrosive leak detection
fluid, orother approved leak detection methods, never use a source of ignition
What do we do when we find a leak? Correct Ans-8.1.5.3 Fix it and retest.
List 5 reasons why a leak check should be performed. Correct Ans-Any interruption of
service, leak suspected, meter replacement, appliance or connector replacement.
What is the difference between when a pressure test and a leak test should be performed?
Correct Ans-Pressure test is for new piping, leak check is for any disruption of service
What is the test medium and pressure used in a leak check? Correct Ans-8.2.1 Fuel gas,
available supply pressure
What must we do when turning the gas on? Correct Ans-8.2.2 Visually inspected to
determine that there are no open fittings or endsand that all valves at unused outlets are closed
and plugged or capped
What size piping may require the codebooks process of purging gas piping with inert gas before
being placed into service? Correct Ans-It can't contain anything listed in table 8.3.1
, What size piping may require the codebooks process of purging gas piping with inert gas when
being altered Correct Ans-Anything listed in table 8.3.1
Explain what should happen with the discharge of purged gases? Correct Ans-8.3.2.1 Lists all
methods of dealing with the purged gasses
What is the minimum percentage needed to pass a written test for each specialty license?
Correct Ans-70%
What is the first tier to the specialty license? Correct Ans-Gas Piping Installer
How many hours of educational training are required for the first specialty license? Correct
Ans-60 Hours (Safemec 305.02)
How many hours of on-job-training are required for the first specialty license? Correct Ans-
1000 Hours (Safemec 305.02)
What is the second tier to the specialty license? Correct Ans-Fuel Gas Installation Technician
How many hours of educational training are required for the second specialty license?
Correct Ans-100 Hours Total (Safemec 305.03)
How many hours of on-job-training are required for the second specialty license? Correct
Ans-1000 On Job Training Hours (Safemec 305.03)
What is the third tier to the specialty license? Correct Ans-Fuel Gas Service Technician
How many hours of educational training are required for the third specialty license? Correct
Ans-140 Hours (Safemec 305.04)
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