New York City Gas Code Practice Test

These questions are part of the practice quiz. Start practicing

• For coated and wrapped gas pipe, what is the minimum test pressure?
• What testing must be performed after modifying gas piping or appliances?
• What testing must be performed after installing a new gas piping system?
• What governs the termination location of venting systems for gas appliances?
• Which pipe size range has approximately 11 threads?
• What are the requirements for bonding CSST conduit connections?
• What is the role of a manometer or test gauge during tests?
• Which statement correctly matches the test pressure to its range for distribution?
• If gas piping is installed in an eligible corridor, which of the following requirements apply?
• During a gas piping installation, what must be verified with the gas utility?
• Is natural gas toxic at typical ambient conditions?
• The maximum stated working pressure for gas distribution piping is up to what p.s.i.g?
• Which joint type is NOT listed as acceptable for gas piping?
• Unthreaded portions of gas piping outlets shall be extended beyond finished walls and ceilings and above floors, patios, and slabs by what amounts?
• In the NYC Fuel Gas Code, what is the outlet of the inside meter assembly called?
• In solid-floor gas piping installations, the conduit above the floor shall extend at least how many inches?
• What is the function of a flame safeguard in gas-fired appliances?
• How many threads are on a four inch pipe?
• Why are appliance clearances to combustibles important?
• For underground piping, galvanized pipe is not suitable protection. Which statement describes this correctly?
• When joining a 150# steel flange to a class 125 cast-iron flange, the raised face of the steel flange shall be?
• Supports for 1 1/4 inch gas piping shall be spaced no more than how many feet apart?
• Water may be used as testing medium under which condition?
• What is the recommended sequence for a gas installation project from start to finish?
• Threaded pipe may be used up to 4 inches at a pressure no greater than what value?
• Which statement best describes gas riser?
• Who inspects the pressure and leak tests after gas piping installation?
• What is CSST and what special requirement does the NYC Fuel Gas Code require for it?
• Who is responsible for ensuring gas piping components are installed per listing and manufacturer's instructions?
• Gas piping going through the foundation wall of a building must be protected by what?
• For gas distribution from 5 psi to 15 psi, what is the required test pressure and duration?
• Why is it important to hold a specific duration during a pressure test?
• Concerning joints in concealed gas piping, which statement is correct?
• Which pipe size range has approximately 12 threads?
• What is the difference between direct-vent and non-direct-vent appliances?
• How many threads are on a two and a half inch to three inch pipe?
• For gas distribution from 1/2 psi to 5 psi, what is the required test pressure and duration?
• The untreated portion of gas piping outlets through ceilings and walls must extend through finished ceilings and walls by at least 1 inch.
• All exterior gas piping shall be elevated not less than how many inches above ground and roof surfaces?
• The shutoff valve for appliances shall be located?
• Gas piping in solid floors must be installed in a conduit of schedule what pipe?
• Where does the Department of Transportation jurisdiction end?
• Which code forms the basis for the NYC Fuel Gas Code and how is NYC modified?
• What is the maximum allowable pressure in the corridor exception?
• When testing, expansion joints require temporary restraints if needed for what reason?
• Which factor is essential when sizing gas piping beyond simple length considerations?
• What reading capability must each digital gauge used to measure pressure in the magnitude of 3 psi and higher have?
• Why is CSST bonding important?
• Which NYC agency issues permits and conducts inspections for gas piping work?
• Which statement best describes general safety practices during gas piping field work?
• Which component pair is essential in natural gas composition?
• A gas meter installed inside a building should be located where?
• When piping passes through an outside wall, how far outside the building must the pipe be?
• Which statement best describes a drip-tight seal in gas connections?
• Which is the correct test for gas distribution up to 1/2 psi?
• If the shutoff valve for appliances is located in the firebox, what additional requirement applies?
• Which statement about internal gas piping support is correct?
• The gas shut off valve shall be within how many feet of the appliance?
• What gas is prohibited from being used for testing gas piping?
• What are general requirements for carbon monoxide detectors in NYC residences with gas appliances?
• Gas piping system must be purged to the outdoors when the nominal pipe size is what?
• What range describes the ignition temperature of natural gas?
• What condition is found when you have a yellow flame?
• What does a drip-tight seal refer to in gas appliance connections?
• What action should be taken if a gas line is discovered damaged underground?
• Ends and joints for solid-floor conduit installations must extend above the floor and above grade by how much?
• Gas pipe conduit terminating outside the building shall be extended and vented how?
• Which book would you consult for National Grid's inside meter assemblies?
• In a multi-unit installation, what is essential to isolate a single unit's gas supply without affecting others?
• What is the required test pressure and duration for corridor gas piping?
• Which statement accurately describes leak detection methods?
• What is the minimum test pressure for coated and wrapped gas pipe? (alternate phrasing)
• Where are CO detectors typically required in homes with gas appliances?
• What is the role of the gas service shutoff at the property line?
• How long is the limited gas work qualification valid, and can it be renewed?
• Supports for 1/2 inch gas piping shall be spaced no more than how many feet apart?
• True or false: Where the shutoff valve is located in the firebox, a remote shutoff valve shall also be provided.
• Located on the supply side of the meter, every meter shall be equipped with a what?
• What test condition is specified to prove tightness for public corridor piping?
• The specifications for inside meter assemblies for buildings that receive natural gas from Con Ed are found in which book?
• What is the purpose of a drip leg (gas trap) in the gas supply to appliances?
• What is the typical process for testing and sign-off after gas piping work in NYC?
• Exterior gas piping shall be elevated above ground and roof surfaces by a minimum of what inches?
• Concealed gas piping in solid partitions is allowed only if installed in a ventilated chase or casing and the pipe has no unions, compression couplings, or swing joints. Which option matches this requirement?
• Gas leak detection methods include?
• Gas pipe buried in conduit must be sealed to prevent the entrance of gas leaks. The conduit must be designed for what pressure relative to the gas pipe?
• Which statement best describes CO detectors in homes with gas appliances?
• How many threads are on a one and a quarter inch to two inch pipe?
• What should be considered for underground gas piping?
• For gas distribution up to 1/2 psi, what is the required test pressure and duration?
• What considerations are required when gas piping passes through a fire-resistance-rated wall or floor?
• What device must be used to determine whether the purge is complete?
• When is freshwater permitted as the test medium for piping testing?
• What information is typically included in as-built drawings for gas work?
• Which item is typically part of post-installation documentation for a gas project?
• How should vent piping be arranged for horizontal and vertical sections?
• NYC amendments to the IFGC are part of which larger code set?
• When the flange joint is open
• Which statement correctly describes allowable testing mediums for gas piping?
• What is a typical NYC requirement for testing gas piping after installation in terms of process?
• What is the role of a gas regulator in a household gas system?
• All factory applied coated and wrapped pipe shall be pressure tested at a minimum of what p.s.i.g?
• Gas meters and service piping are found in which part of the code?
• The testing pressure and duration for distribution pressures over 1/2 psig through 5 psig is 50 psig for a minimum of how many minutes?
• What does 'per listing' mean for gas piping components?
• What considerations apply to gas piping in multi-family dwellings?
• What is the final step before you restore gas service after a shutdown?
• What is the purpose of a proper shut-off valve arrangement on gas appliances?
• Which of the following most accurately describes a required permit application item for gas work?
• What is carbon monoxide (CO) also known as?
• What condition if found when you have an orange flame?
• Downstream piping in one townhouse unit shall not be upstream piping for a second townhouse.
• Why must ventilation and combustion air be provided for gas appliances in enclosed spaces?
• What combustion air is required for a space with a gas appliance that has limited air openings?
• For test pressures over 100 psi on coated and wrapped gas pipe, which fluid may be used?
• Not listed as an acceptable flange gasket material?
• Piping shall not be installed in or through
• Which materials are typically permitted for gas piping in NYC residential installations?
• For nominal pipe size 8 inches or larger, the purge must be vented to where?
• Which statement best describes appliance clearances to combustibles?
• CSST stands for what?
• The specific gravity of natural gas lies between which range?
• The untreated portion of gas piping outlets must extend through finished ceilings and walls by at least how many inches?
• How many threads are on a half inch to one inch pipe?
• Which statement about natural gas density is accurate?
• What must be included in the project permit application for gas work?
• For piping located within a public corridor, where should the valves be placed to ensure accessibility?
• What is the maximum allowable gas pressure in piping located within a public corridor?
• Which agency exercises jurisdiction over actions that gasfitters must follow?
• The unthreatened portion of gas piping outlets extending through floors or outdoor patios and slabs must extend above them by at least how many inches?
• What testing is required after modifications?
• Gas outlets that do not connect to appliances or future laboratories shall be capped tight, except for which type of devices?
• Which book would you consult for Con Ed's inside meter assemblies?
• Is today natural gas toxic?
• According to the NYC gas code, service piping is defined as piping located upstream of which boundary?
• Where should the main shut-off valve for a gas appliance be located?
• The flammable limits for natural gas are best described as which range?
• What is the required slope for piping for conditions other than dry gas?
• How is the correct piping size determined?
• When modifying or replacing a gas appliance, what steps must be taken regarding venting and combustion air?
• Fittings used with steel or wrought-iron pipe shall be?
• Which detectors require ongoing maintenance in residences with gas appliances?
• During a pressure test, which indicator suggests the system is not holding test pressure?
• Which statement about underground piping protection using galvanized pipe is correct?
• Non-destructive gas pipe inspection shall include which methods?
• How should gas piping be supported and protected within a building?
• Why is proper labeling of gas lines important for maintenance and safety?
• What is the minimum test pressure for coated and wrapped gas pipe?
• Gas pipe shall not be installed in in public corridors nor exit enclosures, except?
• When piping passes through an exterior wall, what sleeve requirement applies?
• Which joints are acceptable in gas piping?
• What is the main reason vent piping must maintain clearance from openings?
• The flammable range for natural gas and explosive limits are between?
• Gas system that operates at pressures above 2 psi g must be purged where when energized?
• How do low pressure and appliance operating pressures relate in gas systems?
• During a pressure test, if the pressure does not hold, what is the recommended next step?
• CSST bonding is typically connected to what?
• What is the duration for testing gas distribution from 1/2 psi to 5 psi?
• What is the time duration for testing gas distribution up to 1/2 psi?
• When testing at pressures over 100 psi, which fluid may be used?
• Underground piping shall be installed a minimum depth of how many inches below grade?
• Which statement is true about testing above 100 psi?
• Materials for flange gaskets shall be
• What should be done with gas piping that is no longer used in a system?
• Material for flange gaskets shall be capable of withstanding
• Stair enclosure or require exit way, shaft containing standpipe risers and fire pump housing shall not
• How is combustion air typically provided to a confined space with a gas appliance?
• Why must vent terminations avoid proximity to doors and windows?
• Which pipe size range has approximately 13 threads?
• Where must the vent from a service regulator terminate?
• What license or credential is typically required to perform gas piping work in NYC?
• In the public corridor, which construction method is required for piping?
• According to the NYC Fuel Gas Code, vertical piping supplying fuel gas is known as?
• Piping in solid floors shall be laid in channels, covered to allow access, or installed in conduit with ends extended and vented as specified. Which option correctly describes the required installation?
• How should gas piping be labeled during installation?
• The specifications for inside meter assemblies for buildings that receive natural gas from National Grid are found in which book?
• Which statement describes proper underground piping installation?
• Factory-applied coated and wrapped pipe must be pressure tested to what minimum p.s.i.g?
• Where is a union fitting required for a gas appliance?
• What is the purpose of requiring a leak-detection method during testing?
• Gas piping may be installed in public corridors in residential buildings that do not have floors below grade or in multi-use buildings that have a residential occupancy under certain conditions. Which statement is true?
• What is the mandated hanger spacing for 3/4 inch and 1 inch gas piping?
• What are the two important components of natural gas?
• At what temperature will natural gas ignite?
• Which document governs the testing methods for gas piping after installation?
• Which statement about gas regulator function is correct?
• Which statement correctly describes where Department of Transportation jurisdiction ends?
• What action should be taken with unused or abandoned gas piping?
• Which spaces are prohibited for piping installation unless specified otherwise?
• Testing mediums shall be which of the following?
• On a job where a full gas work qualified journeyman is present, which other employee does his gas work qualification allow to do gas work?
• What two requirements does NYC impose for CSST installation?
• Underground piping shall be installed a minimum depth of 24 inches below grade.
• What is added to natural gas to give it an odor?
• Located on the supply side of the meter, every meter shall be equipped with a shut off valve.
• Is natural gas lighter than air?
• Which statement about CSST bonding and grounding is true?
• What actions should be taken if a gas leak is detected?
• What is the duration for testing gas distribution from 5 psi to 15 psi?
• Gas distribution piping up to 1/2 psig shall be tested at what pressure and for how long?
• What color is carbon monoxide?
• With cast-iron flange only what must be used?
• How should underground gas piping be protected from damage during backfill?
• Concealed gas piping located in partitions is allowed only if it is installed in what type of enclosure?
• The holder of the plumbing permit shall give how many days prior written notice for inspection?