NYC GAS CODE EXAM QUESTIONS AND
ANSWERS
Supports for 1 inch gas piping shall be spaced no more than, how many feet apart? -
Answer-8 feet
The gas shut off valve shall be within how many feet of the appliance? - Answer-6 feet
Located on the supply side of the meter, every meter shall be equipped with a what? -
Answer-Shut off valve
Gas distribution piping with pressures up to 1/2 p.s.I.g, shall be tested at a pressure of
how many P.s.I.g?, and a minimum of how many minutes? - Answer-3 p.s.I.g for 30
minutes
What joints is acceptable in gas piping? - Answer-Threaded, flanged and welded
Gas meters and service piping is found in what part of the F.G.C? - Answer-Appendix E
What is the final step before you restore gas service after a shutdown? - Answer-The
gas utility company shall be notified by owner or his or her authorized representative.
All factory applied coated and wrapped pipe shall be pressure tested at a minimum of
what p.s.I.g? - Answer-90 p.s.ig.
The holder of the plumbing permit shall give how many days prior written notice for
inspection? - Answer-2 days
Gas leak detection methods include? - Answer-An approved gas detector, a
noncorrosive leak detection fluid and other approved leak detection methods.
The shutoff valve for appliances shall be located? - Answer-In the same room as the
appliance.
True or false. Where the shutoff valve is located in the firebox a remote shutoff valve
shall also be provided. - Answer-True.
Supports for 1/2 inch gas piping shall be spaced no more than how many feet apart? -
Answer-6 feet
Supports for 1 1/4 inch gas piping shall be spaced no more that how many feet apart? -
Answer-12 feet
What color is carbon monoxide? - Answer-Has no color
, Is natural gas lighter than air? - Answer-Yes
What are the 2 important components of natural gas? - Answer-Methane and ethane
Is today natural gas toxic? - Answer-No
The specific gravity of natural gas is between what ranges? - Answer-0.60 to 0.85
At what temperature will natural gas ignite? - Answer-Between 1100 to 1200 degrees
The flammable range for natural gas and explosive limits are between? - Answer-5% to
15%
What condition is found when you have a yellow flame? - Answer-Incomplete
combustion
What condition if found when you have an orange flame? - Answer-Dust particles
What is "CO" also known as? - Answer-Silent killer
What is added to natural gas to give it an odor? - Answer-Mercaptan
How must each meter inside a building be installed? - Answer-In a readily accessible
location and be protected from corrosion.
How many threads are on a half inch to one inch pipe? - Answer-Approximately 10
threads.
How many threads are on a one and a quarter inch to two inch pipe? - Answer-
Approximately 11 threads.
How many threads are on a two and half inch to three inch pipe? - Answer-
Approximately 12 threads.
How many threads are on a four inch pipe? - Answer-Approximately 13 threads.
What agency exercise jurisdiction over actions that gasfitters must follow? - Answer-
N.y.c. Department of buildings
Where must the vent from a service regulator terminate? - Answer-Outdoors, at least
18" from the openings to the building
Department of transportation jurisdiction ends? - Answer-At the property line
ANSWERS
Supports for 1 inch gas piping shall be spaced no more than, how many feet apart? -
Answer-8 feet
The gas shut off valve shall be within how many feet of the appliance? - Answer-6 feet
Located on the supply side of the meter, every meter shall be equipped with a what? -
Answer-Shut off valve
Gas distribution piping with pressures up to 1/2 p.s.I.g, shall be tested at a pressure of
how many P.s.I.g?, and a minimum of how many minutes? - Answer-3 p.s.I.g for 30
minutes
What joints is acceptable in gas piping? - Answer-Threaded, flanged and welded
Gas meters and service piping is found in what part of the F.G.C? - Answer-Appendix E
What is the final step before you restore gas service after a shutdown? - Answer-The
gas utility company shall be notified by owner or his or her authorized representative.
All factory applied coated and wrapped pipe shall be pressure tested at a minimum of
what p.s.I.g? - Answer-90 p.s.ig.
The holder of the plumbing permit shall give how many days prior written notice for
inspection? - Answer-2 days
Gas leak detection methods include? - Answer-An approved gas detector, a
noncorrosive leak detection fluid and other approved leak detection methods.
The shutoff valve for appliances shall be located? - Answer-In the same room as the
appliance.
True or false. Where the shutoff valve is located in the firebox a remote shutoff valve
shall also be provided. - Answer-True.
Supports for 1/2 inch gas piping shall be spaced no more than how many feet apart? -
Answer-6 feet
Supports for 1 1/4 inch gas piping shall be spaced no more that how many feet apart? -
Answer-12 feet
What color is carbon monoxide? - Answer-Has no color
, Is natural gas lighter than air? - Answer-Yes
What are the 2 important components of natural gas? - Answer-Methane and ethane
Is today natural gas toxic? - Answer-No
The specific gravity of natural gas is between what ranges? - Answer-0.60 to 0.85
At what temperature will natural gas ignite? - Answer-Between 1100 to 1200 degrees
The flammable range for natural gas and explosive limits are between? - Answer-5% to
15%
What condition is found when you have a yellow flame? - Answer-Incomplete
combustion
What condition if found when you have an orange flame? - Answer-Dust particles
What is "CO" also known as? - Answer-Silent killer
What is added to natural gas to give it an odor? - Answer-Mercaptan
How must each meter inside a building be installed? - Answer-In a readily accessible
location and be protected from corrosion.
How many threads are on a half inch to one inch pipe? - Answer-Approximately 10
threads.
How many threads are on a one and a quarter inch to two inch pipe? - Answer-
Approximately 11 threads.
How many threads are on a two and half inch to three inch pipe? - Answer-
Approximately 12 threads.
How many threads are on a four inch pipe? - Answer-Approximately 13 threads.
What agency exercise jurisdiction over actions that gasfitters must follow? - Answer-
N.y.c. Department of buildings
Where must the vent from a service regulator terminate? - Answer-Outdoors, at least
18" from the openings to the building
Department of transportation jurisdiction ends? - Answer-At the property line
