Gas Codes Flashcards
A means to interrupt the electrical supply to a gas fired air conditioning appliance shall be provided within sight of and not more than ________ feet from the appliance.
a. 25
b. 50
c. 75
d. 100
50
REF = 627.10
A mechanical combustion air system shall supply outdoor air at a rate not less than ________ cfm per 1000 Btu/h of total input rating of all appliances located within the space.
a. 15
b. 21
c. 0.50
d. 0.35
0.35
REf = 304.9
Clothes dryer installations exhausting more than ___________ cfm shall be provided with makeup air.
a. 200
b. 400
c. 500
d. 600
200
REF = 614.6
Unless located within a dwelling unit, rooms containing appliances shall be provided with a door and an unobstructed passageway measuring not less than _______ inches wide and 80 inches high.
a. 24
b. 32
c. 36
d. 30
36
REF = 306.2
Gas vents shall terminate not less than 3 feet above any forced air inlet located within ___________ feet.
a. 5
b. 10
c. 15
d. 20
10
REF = 503.6.8
Gas vents terminating less than 8 feet from a vertical wall shall terminate not less than _________ feet above any portion of a building within 10 feet.
a. 2
b. 3
c. 5
d. 6
2
REF = 503.6.4 #2
An installation is not required to be brought into compliance if it is ________ at the time of adoption of the code.
a. listed
b. labeled
c. operational
d. lawfully in existence
d
REF= 102.2
Catwalks installed to provide the required access to rooftop equipment shall be a minimum of _______ inches wide.
a. 36
b. 30
c. 24
d. 18
24
REF = 306.5 #10
The test duration for testing a gas piping system with a volume less than 10 cubic feet must be not less than _________ minutes.
a. 60
b. 30
c. 10
d. 5
10
REF = 406.4.2
The vent pipe for pressure regulators shall be designed to prevent _________.
a. the release of fuel gas
b. back preesure
c. rupture of the regulator diaphragm
d. the entry of insects
the entry of insects
REF = 410.3
A single wall metal pipe vent shall terminate at least \_\_\_\_\_\_\_\_ feet in vertical height above the highest appliance draft hood outlet. A. 5 B. 10 C. 15 D. 20
5
REF = 503.7.3
Appliances having an ignition source shall be elvated such that the ignition source is not less than ________ inches above the floor in a private garage.
a. 12
b. 18
c. 6
d. 30
18
REF 305.3
LP - gas motor vehicle fuel - dispensing facilities that are self - service require an emergency shut-off switch located a maximum of __________ feet from the dispenser.
a. 25
b. 50
c. 75
d. 100
100
REF= 412.9 #2
Where the air-infiltration- rate is unknown, a room or space providing indoor combustion air requires a minimum volume of _________ cubic feet per 1,000 Btu/h of the appliance input rating.
a. 15
b. 25
c. 50
d. 75
50
REF = 304.5.1
For vents passing through an attic, the attic insulation shield shall extend at least ________ inches above the insulation material.
a. 6
b. 12
c. 2
d. 4
2
REF = 502.4
For a residential furncance with a listed gas conversion burner and draft hood, a single wall metal pipe connector requires a minimum clearance of \_\_\_\_\_\_\_\_\_\_ inches to combustible materials. A. 9 B. 18 C. 6 D. 12
9
REF = Table 503.10.5
Barometric draft regulators shall be installed in a manner to prevent any difference in pressure between the regulator and the \_\_\_\_\_\_\_\_ air supply. A. Ambient B. Combustion C. Makeup D. Ventilation
combustion
REF = 503.12.5
For mechanical draft systems, exit terminals located adjacent to public walkways shall be not less than _________ feet above finshed ground level.
a. 12
b. 4
c. 7
d. 10
7
REF = 503.3.3 #6
If the permit has not been issued, an application for a permit is considered abandoned ________ days after the date of filing.
a. 30
b. 60
c. 90
d. 180
d
REF= 106.3.2
Commercial clothes dryer exhaust ducts shall have a minimum clearance of ________ inches to combustible constrction.
a. 2
b. 4
c. 6
d. 12
6
REF = 614.9
Required outdoor air inlets for a residential forced air heating system shall be covered with screen having _________ inch opening.
a. 1
b. 3/4
c. 1/2
d. 1/4
1/4
REF = 618.4
Sediment traps are not required for ___________.
a. ranges
b. water heaters
c. boilers
d. forced air furnaces
ranges
REF = 408.4
In general, return air for a forced air heating system is permitted to be obtained from a _____________.
a. garage
b. attic
c. sleeping room
d. kichen
sleeping room
REF = 618.3 #6
Where used, draft hoods and draft barometric regulations shall be installed ________.
a. on the roof of the building
b. in a room adjacent to the appliances
c. at the appliance vent connection
d. in the same room as the appliance
in the same room as the appliance
REF = 304.3
Which of the following individuals is not qualified to serve on the Board of Appeals for the IFGC?
A. a registered design professional who is a registered architect
B. A registeded design professional with fuel gas and plumbing engineering experience.
C. An electricla contractor with at least 10 years of experience, 5 of which the contractor was responsible for the work.
D. a single family dwelling home owner
D
REF=109.2.1
The maximum permitted length of a dryer exhaust duct equipped with a domestic dryer exhaust duct power ventilator is _________.
a. 35 feet
b. determined by the dryer manufacturer’s instructions
c. determined by the power ventilator manufacturer’s instructions
d. 50 feet
C
REF = 614.8.4.3
A vent to the outdoor is not required for a pressure regulator equipped with a _________.
a. breather vent
b. vent limiting device
c. relief vent
d. vent manifold
vent-limiting device
REF = 410.3 Exception
In general, return air for a forced air furnace shall not be taken from a _________.
a. room containing a direct vent appliance
b. crawl space
c. room containing an unvented appliance
d. room containing a soild fuel appliance
b
REF = 618.3 #7
The unthreaded portion of gas piping of gas piping outle must extend not less than _________ inches through finished ceilings and walls.
a. 4
b. 3
c. 2
d. 1
1
REF = 404.16
A gas shutoff valve shall be located within ______ feet of the appliance.
a. 2
b. 5
c. 6
d. 7
6
REF = 409.5.1
A commom gas vent serving appliances on more than one floor level shall be permitted for __________ appliances, provided that the venting system is designed and installed in accordance with approved engineering methods.
a. Category I
b. Catergory II
c. Category III
d. Category IV
Category 1
REF = 503.6.11
Gas piping must not be installed in or through a ________.
a. plenum
b. clothes chute
c. atttic
d. enclosed space
clothes chute
REF = 404.3
An addition to a ful gas installation shall conform to that required for ______ installations.
a. existing
b. new
c. modified
d. relocated
b
REF= 102.4
Unless incorporated as part of the appliance, a sediment trap shall be installed _____________.
a. downstream of the appliacane shut off valve
b. remote from the appliacane loaction
c. upstream of the applicance shut off valve
d. upstream of the manifold
downstream of the appliance shut off valve
REF = 408.4
Where an appliance is located in an attic, a ________ is required at the access opening to the attic passageway.
a. luminaire
b. receptacle outlet
c. level work surface
d. light switch
light switch
REF = 306.3.1
Reduced clearance protective assemblies for gas appliances shall be places a minmum of _______ inch(es) from the appliance.
a. 1/2
b. 1 1/2
c. 1
d. 2
1
REF = 308.2 (1)
Where approved roof-mounted fall-restraint devices are installed in place of a required guards, the devices must be installed every _____ feet or less along the ridge line.
a. 10
b. 15
c. 20
d. 25
10
REF = 306.6 Exception
Conversion of an appliance to a different fuel gas is allowed if in acccordance with the _______ instructions.
a. engingeer’s
b. inspectors
c. manufacturers
d. contractors
manufacturer’s
REF= 301.7.1
Single wall metal pipe vent is permitted to pass through a \_\_\_\_\_\_\_\_\_\_\_ constructed of combustible materials. A. Inside wall B. Attic C. Floor D. Exterior wall
exterior wall
REF = 503.7.6
The bottom of the vent terminal and air intake for a direct vent appliance shall be located at least \_\_\_\_\_\_\_\_\_\_ inches above finshed ground level. A. 6 B. 12 C. 18 D. 24
12
REF = 503.8 Exception # 3
Exterior above-ground gas piping must be elevated not less than ________ inches above ground and rood surfaces.
a. 3 1/2
b. 3
c. 2 1/2
d. 2
3 1/2
REF = 404.9
A type B or L vent shall terminate a least _________ feet in vertical height above the highest appliance draft hood or flue collor.
a. 7
b. 8
c. 5
d. 20
5
REF = 503.6.6
Where double wall vents are installed, fasteners shall __________.
A. Be spaced evenly around the vent
B. Not penetrate the inner wall
C. Not be used at the transition from a flue collar
D. Be aluminum or stainless steel
not penetrate the inner wall
REF = 503.6.14
Using the longest method for sizing gas piping, each section of piping is measured from ___________.
a. the first branch to the appliance
b. the point of delivery to the most remote outlet
c. the point of delivery to the first branch
d. the pressure regulator to the most remote outlet
the point of delivery to the most remote outlet.
REF = 402.4.1
Galvanized steel ducts used for combustion air shall be constructed in accordance with the _________.
a. internaional fuel gas code
b. interational building code
c. interational mechanical code
d. ACCA manual D
International Mechanical Code (IMC)
REF = 304.11 #1
The required permanent notice placed outside of a sauna room warns users to not exceed __________ minutes in the sauna.
a. 30
b. 60
c. 15
d. 45
30
REF = 615.7.1
The minimum finish dimension for a cleanout opening for a common dryer exhaust system in a multi-story building is _________ inches.
a. 24
b. 20
c. 16
d. 12
12
REF = 614.10 # 10
The vent terminal of a direct vent appliance with an input of 20,000 Btu per hour shall be located at least \_\_\_\_\_\_\_\_\_\_ inches from any air opening into a building. A. 12 B. 18 C. 6 D. 9
9
REF = Table 503.8
Unless located in a vault, CNG storage and dispensing equipment is not permitted to be installed less than __________.
a. 10 feet from an ignition source
b. 15 feet from a building
c. 25 feet from a property line
d. 50 feet from a public street
10 feet from an ignition source
REF = 413.3.1 #2
The vent terminal of a direct vent applicance with an input of 60,000 Btu/h shall be located at least \_\_\_\_\_\_\_\_\_\_\_ inches from any air opening into a building. A. 18 B. 6 C. 9 D. 12
9
REF = Table 503.8
Unless a higher limit is set by the manufacturer of an unvented room heater, a required oxygen depletion safety system shall shut off the appliance when the oxygen is depleted to ___________ percent concentreation.
a. 18
b. 8
c. 38
d. 28
18
REF = 621.6
Combustion air requirments for appliances with power burners are determined by ________.
a. the known air infiltration rate method
b. engineering calculations
c. research reports
d. the manufacturer’s instructions
the manufacturer’s instructions
REF= 304.1
Gas piping is permitted to be sized in accordance with the sizing tables of the ___________.
a. gas supplier
b. piping system manufacturer
c. approved testing agency
d. piping supplier
piping system manufacturer
REF = 402.3 #2
For single wall metal peipe to be used outdoor for venting appliances, the 99 percent winter design temperture must not be less than \_\_\_\_\_\_\_\_\_\_\_ degrees Fahrenheit. A. 0 B. 32 C. 40 D. 50
32
REF = 503.7.2
The maximum distance that is allowed between hangers supporting horizontal 1 1/4 inch nominal diameter rigid steel pipe used to supply natural gas to an appliance is ________ feet.
a. 4
b. 6
c. 10
d. 8
10
REF = 415.1 Table
A minimum clearance above grade of _________ inches is required for floor furnces.
a. 6
b. 3
c. 12
d. 18
6
REF = 609.4
For a clearance reduction system using ventilated air space, the system shall maintain an air space clearance to combustible materials of at least __________ inch(es).
a. 1/2
b. 1 1/2
c. 1
d. 2
1
REF = 308.2 (1)
Generally, the relief opening of a draft hood shall be located a minimum of \_\_\_\_\_\_\_\_\_\_ inches from any surface. A. 9 B. 12 C. 3 D. 6
6
REF = 503.12.7
Gas piping must not enter a building ________.
a. underground
b. through a foundation
c. above grade
d. without a sleeve
underground
REF = 404.6
The appliance shutoff valve is permitted to be installed at a manifold that is not greater than ________ feet from the apliance.
a. 6
b. 12
c. 25
d. 50
50
REF = 409.5.3
Vents passing through insulated assemblies require an insulation shield constructed of steel with a minimum thickness of ______________.
a. 0.0187 inch ( no 26 gage)
b. 0.0236 inch ( no 24 gage)
c. 0.0450 inch ( no 18 gage)
d. 0.0575 inch ( no 16 gage)
0.0187 ( No 26 gage)
REF = 502.4
For steel gas piping, threaded fittings larger than _________ inches are not permitted.
a. 2
b. 2 1/2
c. 3
d. 4
4
REF = 403.10.5 #1
Masonry chimney flue shall be provided with a cleanout opening having a minimum height of _________ inches.
a. 4
b. 6
c. 8
d. 10
6
REF = 501.15.3
_________ provide supporting documentation to verfiy that an alternative material or assembly complies with the intent of the code.
a. Reseach reports
b. Manufacturer’s installation instructions
c. inspection reports
d. construction documents
a
REF= 105.2.1
Appliance connections to a chimney or vent equipped with a power exhauster shall be made on the ________ side of the exhauster.
a. outlet
b. inlet
c. positive
d. discharge
inlet REF = 501.10
The minimum clearance to combustible material from the back of the floor mounted unit heater is \_\_\_\_\_\_\_\_\_ inches. a. 18 b. 12 c. 6 d 4
6
REF = 620.4
Decorative shrouds for gas vents shall be listed ________.
a. as complying with UL 1738
b. for use with the specific appliance
c. for the specific gas venting system
d. for use with gas vents
for the specific gas venting system
REF = 503.6.5.1
Appliances in structures located in flood hazard areas shall be located at or above the ______.
a. high water level
b. elevation required by the IBC
c. freeboard
d. 100 year flood level
elevation requied by the IBC
REF= 301.11
Underground nonmetallic gas piping requires a yellow insulated copper tracer wire not less than size __________.
a. 12 awg
b. 14 awg
c. 18 awg
d. 20 awg
18 AWG
404.17.3
Notching at the ends of wood joints shall be exceed _______ the joist depth.
a. 1/2
b. 1/8
c. 3/8
d. 1/4
1/4
REF= 302.3.2
The IFGC regulates piping systems for natural gas with an operating pressure of _______ psig or less.
a. 125
b. 90
c. 5
d. 20
a
REF= 101.2.2
Tests performed by ______ may be required by the code official whre there is insufficient evidence of code compliance.
a. the owner
b. an approved agency
c. the contractor
d. a design professional
b
REF= 105.3.2
Water heaters utilized both to supply potable water and provide hot water for space heating shall be listed and labeled and shall be installed in accordance with the _____________.
a. Intnational fuel gas code
b. international plumbing code
c. international mechanical code
d. international building code
B
REF = 624.2
Where a single meter is used to supply gas to more than one building, a shutoff valve shall be provided _________.
a. at the manifold
b. outdoors at each building
c. inside at the point of entry to each building
d. at an approved location
outdoors at each building
REF = 409.3.2
The floor register of a floor furnace is permitted to be installed ____________.
a. in a stairway landing
b. 4 inches from a wall
c. ina private doorway
d. 12 inches from draperies
12 inches from draperies
REF = 609.2 #3
A vented wall furncace shall be loacted so that a door cannot swing within ___________ inches of the air inlet or outlet.
a. 6
b. 9
c. 12
d. 18
12
REF = 608.4
A dedicated gas shut off valve must be located adjacent to the egress door of a laboratory having _______ or more fuel gas outlets
a. 4
b. 2
c. 8
d. 6
2
REF = 409.6
Where the opening dimension are large enough to allow removal of the largest pece of equipment installed in an underfloor space, the clear access opening to the underfloor area shall be a minimum of _________.
a. 18 in by 24 in
b. 22 in by 24 in
c. 22 in by 30 in
d. 30 in by 30 in
22 inches by 30 inches
REF = 306.4
The following threaded fittings for steel gas piping are allowed in concealed locations except ___________.
a. coupling
b. tees
c. unions
d. elbows
unions
REF = 404.5
Guards are not required for rooftop appliances requiring service where _______.
a. approved fall-restraint devices are installed
b. the appliance is at least 8 feet from the roof edge
c. the roof slope is less than 3/12
d. the roof edge is not greater than 10 feet above grade
approved fall-restraint devices are installed
REF 306.6 Exception
The permit or a copy shall be kept on the site of the work __________.
a. until the completion of the project
b. until the work commences
c. until a certifcate of occupancy is issued
d. for one year after the work is completed
a
REF= 106.5.8
Unless provisions are made for a reduced clearance, domestic cooking appliances shall have a vertical clearance above the cooking top of not less than __________ inches to combustible material and metal cabinets above.
a. 18
b. 24
c. 30
d. 42
30
623.7
The _______ shall be responsible for the maintenance of fuel gas instalations
a. contactor that service the equipment
b. occupant of the structure
c. code authority
d. owner or owner’s athorized agent
d
REF= 102.3
Alternative methods or materials not specifically prescribed by the code are permitted when ______.
a. designed by a registered design professional
b. tested
c. approved
d. listed
c
REF= 105.2
Within dwelling units, unobstructed ________ are permitted to convey combustion air.
a. shafts
b. stude and joist spaces
c. chases enclosing chimneys
d. chimneys
stud and joist spaces
REF = 304.11 Exception
Appliances located in an attic shall be provided with a level service space not less than ________ inches deep and _______ inches wide.
a. 30,24
b. 24,30
c. 30,30
d. 30,36
30,30
REF = 306.3
Where mechanical exhaust interferes with the operation of an appliance, _________ is required.
a. an appliance enclosure
b. makeup air
c. an automatic applicance shut off device
d. an interlock between the applicance and exhaust fan
makeup air
REF = 304.4
The code official has the authority to allow temporary connection of an installation to the sources of energy for the purpose of ________.
a. construction
b. heating
c. lighting
d. testing
D
REF= 107.5
A 4 foot high post supporting an illuminating appliance shall be equivalent in strength to a ________ inch diameter Schedule 40 steel pipe.
a. 3
b. 2 1/2
c. 1
d. 3/4
2 1/2
REF = 628.3
For a direct vent firplace with a sidewall vent, the vent termination must be a minimum of _________ inches from the swing of a door.
a. 12
b. 18
c. 24
d. 6
12
REF = 502.7.1
The IFGC does not apply to _______
a. Lap gas piping systems
b. gaseous hydrogen systems
c. oxygen-fuel gas cutting systems
d. gas appliance ventilation air
c
REF= 101.2.4 #4
A domestic open top broiler shall have a minimum clearance of ________ inches between the cooking top and combustible material above the hood.
a. 30
b. 36
c. 18
d. 24
24
REF = 623.5.1
Where the code official finds that a proposed alternative material does not comply with the intent of the code provisions, the code official shall ______.
a. request additional information from the manufacturer
b. state the reson for disapproval in writing to the applicant
c. contact a third party agency to authorize additional testing
d. place limitations on the use of the alternative material
b
REF= 105.2
Unless otherrwise protected from impact, appliances located in a public garage shall be installed a minimum of ________ feet above the floor.
a. 12
b. 15
c. 10
d. 8
8
REF = 305.4
Cooking appliances installed in areas where domestic cooking operations occur shall be listed and labeled as _______ type appliances for domestic use.
a. residential
b. noncommercial
c. hosuehold
d. dwelling
c
REF = 623.2
Sauna heaters shall be equipped with a thermostat that limits the room temperture to no more than _________ degress Fahrenheit.
a. 175
b. 194
c. 200
d. 210
194
REF = 615.6
Appliances shall not be installed in a location subject to vehicle damage except ________.
a. when listed for that particular installation
b. when installed per the manufactures installation instructions
c. where protected by an aprroved means
d. when installed behind steel barriers
where protected by an approved means
REF = 303.4
Where susceptible to damage from nails or screws, clothes dryer exhaust ducts shall be protected with shield plates when the duct is installed less than ___________ inches from the face of the framing member.
a. 2
b. 1 3/4
c. 1 1/2
d. 1 1/4
1 1/4
REF = 614.7
An addition to a ful gas installation shall conform to that required for ______ installations.
new
REF= 102.4
The test pressure must be not less than ___________ times the proposed maximum working pressure of the gas piping system.
a. 3
b. 2 1/2
c. 2
d. 1 1/2
1 1/2
REF = 406.4.1
Condensate waste and drain lines shall be not less than ______ inch internal diameter.
a. 1
b. 1/2
c. 5/8
d. 3/4
3/4
REF = 307.3
Unlisted appliances _________.
a. are not allowed to be installed
b. require testing conducted by the manufactuer
c. may be approved based upon an approved engineering evaluation
d. are permitted to be installed in accordance with the manufactuer’s installation instructions
may be approved based upon an approved engineering evaluation
REF= 301.3
Residential CNG fueling appliances located outdoors shall be installed _________.
a. on a firm noncombustible base
b. at least 6 inches above the adjoining grade
c. not less than 25 feet from building opening
d. not less than 15 feet from lot lines
on a firm noncombustible base
REF = 413.4.3 # 4
Appliance shut off valves located at a n=manifold are not required to be _______.
a. readily accessible
b. in the same room as the appliance
c. identified
d. protected from damage
in the same room as the appliance
REF = 409.5.3
If a thermostat is not an intergral part of the sauna heater, the heat sensing element shall be located a maximum of __________ inches below the ceiling.
a. 8
b. 4
c. 12
d. 6
6
REF = 615.6
Single wall metal peipe vents shall be constructed of galvanized sheet steel not less than \_\_\_\_\_\_\_\_\_ in thickness. A. 0.0360 B. 0.0304 C. 0.0240 D. 0.0190
0.0304
REF = 503.7.1
One set of apporved construction documents shall be kept _________ while work is in progess.
a. with the registered design professional
b. by the owner of the building
c. at the job site
d. with the contractor
c
REF= 106.5.8
Used pipe, fitting, valves and other materials must not be used in a gas piping system except where they are free of _________.
a. paint
b. corrosion
c. foreign material
d. abrasion
foreign material
REF = 403.2
A union must be installed not more than ______ inches from an MP regulator that is connected to rigid piping.
a. 8
b. 12
c. 18
d. 36
12
REF = 410.2 # 7
For other than steel piping, exposed gas piping must be identified by yellow label marked “Gas” in black letters and the markings spaced at intervals not exceeding ________ feet.
a. 5
b. 10
c. 15
d. 20
5
REF = 401.5
Field drilled and tapped pipe fittings are permitted under limited conditions when the work is performer by _________.
a. a licensed pipefitter
b. the contractor holding the permit
c. an approved third party agency
d. the gas supplier
the gas supplier
REF = 403.10.5 #9 #9.2
Suspended type unit heaters shall be installed with clearances to combustible materials of not less than _________ inches at the sides of the unit.
a. 6
b. 12
c. 18
d. 24
18
REF = 620.4
Unless the presribed vertical clearance dimensions are maintained, the inlet for outside or return air for a forced air heating system shall not be located less than __________ feet horizontally from a plumbing vent termination.
a. 8
b. 12
c. 5
d. 10
10
REF = 618.3 # 1
The code official has the authority to grant modifications to the code _______.
a. only for those issues not affecting fire and life safety
b. where the intent and purpose of the code cannot be met
c. only when related to administrative functions
d. for individuals cases where the strict letter of the code is impractical
d
REF= 105.1
Where appliances are supported by a concrete slab, the slab shall extend at least ________ inches above the adjoining grade.
a. 3
b. 4
c. 6
d. 9
3
REF = 305.7
A 30-inch high attic passageway serving a gas appliance is limited in length to no more than ________ feet.
a. 20
b. 18
c. 12
d. 24
20
REF = 306.3
Plastic gas pipe is generally permitted to be installed ____________.
a. outdoors underground only
b. outdoors underground or above ground
c. where protected from physical damage
d. indoors when installed in a conduit
outdoors underground only
REF = 404.17.1
For the protection of concealed dryer exhaust ducts, protective shield shall extend a minimum of ___________ inches above the sole plate and below the top plate.
a. 2
b. 4
c. 6
d. 3
2
REF = 614.7
When protecting concealed dryer exhaust ducts from penetration by nails or scres, steel shield plates shall have a minimum thickness of __________.
a. 0.019 inch (26 gage)
b. 0.024 inch (24 gage)
c. 0.062 inch ( 16 gage)
d. 0.058 inch ( 14 gage)
c
REF = 614.7
Where a space is provided outdoor combustion air through a single opening, a clearance of at least _______ inches is required in front of the appliance.
a. 6
b. 5
c. 12
d. 10
6
REF= 304.6.2
The bonding jumper used to bond corrugated stainless stell tubing (CSST) gas piping to the grounding system shall be not smaller than ________ AWG copper wire or equivalent.
a. 12
b. 10
c. 8
d. 6
6
REF = 310.2.2
A permanent approved means of access is requied for appliances installed on roofs at a height exceeding _______ feet.
a. 10
b. 16
c. 20
d. 24
16
REF = 306.5
The register of a floor furnace with a horizontal warm air outlet shall not be placed closer than _______ inches to the nearest corner.
a. 2
b. 6
c. 12
d. 18
6
REF = 609.2 #2
Termination for chimneys serving residential type or low heat appliances shall extend at least _______ feet above the highest point where they pass though a roof of a building.
a. 2
b. 3
c. 5
d. 7
3
REF = 503.5.4
The _________ is not requird on a application for a permit.
a. proposed occupancy
b. decription of work
c. loction of work
d. type of constrction
d
REF= 106.3
The purpose of this code is to provide ______ standards to safegurad life or limb, health, property and public wlefare.
a. minimum
b. maximum
c. consensus
d. acceptable
a
REF= 101.4
Openings obtaining indoor combustion air from a different story require a total minimum free area of __________ square inch(es) per 1,000 Btu/h of the total input rating of appliances.
a. 2
b. 3
c. 1
d. 4
2
REF = 304.5.3.2
Floor furnaces shall not be installed
a. in a concrete floor built on grade
b. in a wood floor with a crawl space
c. above a basement
d. with less than 18 inches clearance above grade
a
REF = 609.2 # 4
Exhaust ducts for domestic clothes dryers shall be supported at intervals not greater than _______ feet and secured in place.
a. 3
b. 4
c. 5
d. 6
4
REF = 614.8.2
A shutoff valve for a _________ is permitted to be located in an area remote from the appliance.
a. range
b. vented decorative appliance
c. clothes dryer
d. water heater
vented decorative appliance
REF = 409.5.2
Where gas piping is required to be installed in conduit and one end terminates outdoors, the conduit must extend not less than, _____________ inches outside the building.
a. 2
b. 4
c. 8
d. 12
4
REF = 404.8.1
An outdoor air ventilation rate of not less than _____________ cfm per 1000 Btu/h of aggregate input rating is required for unvented infrared heaters.
a. 4
b. 20
c. 40
d. 75
4
REF = 630.3
When terminating above a roof, a single wall metal pipe vent shall extend at least \_\_\_\_\_\_ above the highest point where it passes through the roof. A. 1 foot B. 2 feet C. 3 feet D. 4 feet
2 feet
REF = 503.7.3
Notches in the flange of a cold-formed steel stud in a bearing wall _______.
a. must be at least 16 inches from the bearing end
b. cannot exceed 3 inches in length
c. must be spaced at 24 inches
d. are not allowed
are not allowed
REF = 302.6
The minimum unobstructed total area of supply ducts from a forced air warm air furnace shall be not less than __________ square inches per 1000 Btu/h output rating capacity of the furnace.
a. 1
b. 4
c. 2
d. 6
2
REF = 618.2
Copper and copper alloy gas piping is permitted to be installed when the gas contains no more than an average of ________ grains of hydrogen sulfide per 100 standard cubic feet of gas.
a. 0.9
b. 0.6
c. 0.3
d. 0.1
0.3
REF = 403.4.3
The maximum length of an electrical bonding jumper for a corrugated stainless steel tubing (CSST) system is _______ feet.
a. 150
b. 25
c. 100
d. 75
75
REF = 310.2.3
Suspended mechanical equipment shall be installed a minimum of ________ inches above the adjoing grade.
a. 3
b. 6
c. 8
d. 12
6
REF = 305.7
To pretect vents in a concealed location from physical damage, steel shield plates shall have a minmum thickness of _________.
a. no 22 gage
b. no 16 gage
c. no 12 gage
d. no 18 gage
No 16 gage
REF = 502.7
Gas vents shall be supported in accordance with \_\_\_\_\_\_\_\_\_\_. A. The manufacturers instructions B. The referenced standard C. Accepted engineering practice D. The label on the vent
A
REF = 503.6.12
When a mechanical draft system serving an appliance is not performing __________.
a. an audible alarm shall sound
b. power to the appliance shall be disconnected
c. gas shall not flow to the main burners
d. fan assisted combustion shall operate
gas shall not flow to the main burners
REF = 503.3.3 #5
The installation of shutoff valves shall be prohibited __________.
a. in concealed locations
b. in bedrooms and bathrooms
c. in furnace room enclosures
d. on the roof of buildings
in concealed locations
REF = 409.1.2
In a 5 story building, the exhaust shaft serving clothes dryers on each floor requires _________.
a. a lining of sheet metal or gypsum board
b. fire dampers in the exhaust duct at each story
c. a continuously operating exhaust fan
d. a cleanout opening at each story
C
REF = 614.10 #7
Hangers for a suspended unit heater must be ____________.
a. designed by a registered design professional
b. steel angle iron
c. provided by the appliance manufacturer
d. noncombustible
noncombustible
REF = 620.2
What is the minimum clearance required between a vent connector and combustible materials for an unlisted residential appliance with a draft hood served by a single wall metall pipe vent? A. 6 inch B. 9 inch C. 18 inch D. 36 inch
9 inches
REF = Table 503.10.5
A floor furnace shall have a minimum clearance of 12 inches on all sides except the control side, which shall have a minimum clearance of _________ inches.
a. 18
b. 24
c. 30
d. 36
18
REF = 609.4
______ piping is not allowed for supplying fuel gas.
a. aluminum
b. copper alloy
c. cpvc
d. polyethylene
CPVC
REF = 403.6
In general, underground gas piping systems must be installed at a minimum depth of ________ inches below grade.
a. 12
b. 15
c. 18
d. 24
12
REF = 404.12
When using the known air-infiltration-rate method for indoor combustion air, the maximum infiltration rate that can be used in the equations is _______ ACH.
a. 2.0
b. 1.0
c. 0.75
d. 0.60
0.60
REF = 304.5.2
Portions of gas piping systems installed in concealed locations must not have __________.
a. unions
b. threaded fittings
c. welded joints
d. brazed fittings
unions
REF = 404.5 #4
Semirigid metallic tubing used to connect a gas appliance shall not exceed _________ feet in length.
a. 6
b. 3
c. 5
d. 2
6
REF = 411.1 #3
Outside ventilation air shall be supplied to the space containing a recirculating direct fired industrial heater at a minimum of __________ cfm per 1000 Btu/h of the rated input of the heater.
a. 2
b. 4
c. 8
d. 16
4
REF = 612.5
Where the underside of the combustible material or metal cabinet above a cooking top is protected with 1/4 inch insulating millboard covered with sheet metal, a vertical clearance of less than ___________ inches is permitted above a domestic cooking appliance.
a. 18
b. 24
c. 30
d. 12
24
REF = 623.7 # 1
An appliance shall not be connected to a flue serving a factory built fireplace unless the appliance is ________- for such an installation.
a. listed
b. manufactured
c. designed
d. equipped
listed
REF = 501.7.2
Factory built chimneys and vents for soild fuel appliances are regulated by the __________.
a. international fire code
b. international building code
c. international mechanical code
d. international fuel code
International Mechanical Code (IMC)
REF = 501.1
A listed outdoor gas hose used to connect a portable outdoor appliance to the gas piping system must comply with __________.
a. ANSI Z21.69
b. ANSI Z21.75
c. ANSI Z21.24
d. ANSI Z21.54
ANSI Z21.54
REF = 411.1 #8
When installing a gas shutoff valve for an appliance, the shutoff valve shall be located __________.
a. upstream of a union
b. downstream of an appliance connector
c. downstream of a quick disconnect device
d. with ready access without removing a panel
upstream of a union
REF = 409.5.1
Generally, for vent systems serving more than one appliance, an 8 inch diameter connector is limited to a maximum horizontal length of \_\_\_\_\_\_\_\_ feet. A. 12 B. 9 C. 6 D. 4
12
REF = Table 504.3.2
An automatic appliance shut-off device is required for condenstate pumps located ________.
a. in a basement
b. in an attic
c. in a mechanical room
d. more than 10 feet from the condensing appliance
in an attic
REF = 307.6
The horizontal length of a Type B double wall conector shall be not greater than \_\_\_\_\_\_\_\_\_\_ percent of the height of the vent or chimney. A. 25 B. 50 C. 75 D. 100
100
REF = 503.10.8
A type L vent is permitted for ___________.
a. Category IV furnaces
b. listed combination gas and soild fuel burning appliances
c. unlisted combination gas and oil burning appliances
d. listed combination gas and oil burning appliances
listed combination gas and oil-burning appliances
REF = table 503.4
The code official has the authority to ______ the provisions of the code.
a. waive
b. interpret
c. ignore
d. violate
b
REF=104.1
When installed in a bedroom, a single wall-mounted unvented room is limited to an input rating not greater than __________ Btu/h.
a. 5000
b. 6000
c. 8000
d. 10000
10,000
REF= 303.3 #4
Where a closet is designed for the installation of a clothes dryer, an opening having an area of not less than __________ square inches shall be provides for make up air.
a. 150
b. 50
c. 200
d. 100
100
REF = 614.6
Installationof a 4 inch radius mitered 90 degree elbow in a domestic dryer exhaust duct reduces the maximum specified length by _________-.
a. 5 feet
b. 2 feet 6 inches
c. 1 foot
d. 1 foot 9 inches
5 feet
REF = table 614.8.4.1
A listed unvented room heater does not require a vent when the aggregate input rating of all unvented appliances in the room does not exceed ___________ Btu/h per cubic foot of the room volume.
a. 20
b. 25
c. 30
d. 40
20
REF = 501.8
Clothes dryer exhaust ducts shall not extend through _______________.
a. attics
b. crawl spaces
c. plenums
d. concealed spaces
plenums
REF = 614.4
The minimum thickness required for a 16 inch diameter stell vent connector with an internal area of 190 square inches serving a medium heat applicance is \_\_\_\_\_\_\_\_\_\_\_\_. A. 0.053 in B. 0.067 in C. 0.093 in D. 0.124 in
0.067 inches
REF = Table 503.10.2.5
Provided there are no unsafe condtions, classified _______ building are exempt from the provisions of the code.
a. historic
b. police department
c. public
d. fire department
a
REF= 102.6
Clothes dryer exhaust ducts shall be equipped with a _____________.
a. vent connectors
b. fire damper
c. screen
d. backdraft damper
backdraft damper
REF = 614.4
Two adjoining sides of the register of a floor furnace shall have a distance of at least ________ inches from walls to provide a walking path
a. 24
b. 18
c. 36
d. 12
18
REF = 609.2 #2
Fuel gas installations in detached one and two family deweling and multiple single family dewelling (townhouses) not more than three stories in height with serparate means of egress must comply with the \_\_\_\_\_\_. A. Internatinal fuel gas code B.Internatinal building code C. International residential codes D.internatinal mechanical code
c
REF= 101.2
Unless otherwise approved in accordance with Section 105, aplliances regulated by this code shall be _________.
a. certified
b. listed
c. vented
d. evaluated
listed
REF= 301.3
Where the dryer exhaust duct equivalent length exceeds _________ feet, a permanent label identifying the length of the duct is required.
a. 25
b. 45
c. 35
d. 60
35
REF = 614.8.5
In LP gas motor vehicle fuel-dispensing facilites, the hose length shall not exceed _______ feet.
a. 8
b. 12
c. 18
d. 25
18
REF = 412.8.2
In bearing partitions, any wood stud is permitted to be cut or notched to a depth not exceeding __________ percent of its width.
a. 25
b. 50
c. 40
d. 10
25
REF = 302.3.3
Holes bored in solid wood joists shall be located not less than _______ inch(es) from the top and bottom of the joist.
a. 2
b. 1 1/2
c. 1
d. 1/2
2
REF = 302.3.2
Where a space is provided outdoor combustion air through two opening, one opening must be within _______ inches of the top and one within _______ inches of the bottom of the enclosure.
a. 3,3
b. 6,6
c. 12,12
d. 18,18
12,12
REF = 304.6.1
Vent connectiors shall not be increased in size more than \_\_\_\_\_\_\_\_\_\_\_\_ sizes greater than the draft hood outlet. A. 2 B. 3 C. 4 D. 1
2
REF = 504.2.11
Cuts, notches and bored holes are prohibited in trusses except where _______.
a. limited in size, number and location
b. located in nonbearing members
c. approved by the building inspector
d. the effects are speifically considered in the design
the effects are speifically considered in the design
REF= 302.3.1
Casing extension boots shall not be installed on a wall furnace unless _________.
a. constructed of minimum NO 30 gage metal
b. listed as part of the applicane
c. included in the manufacturer’s installation instructions
d. supplied by the appliance manufacturer
b
REF = 608.5
The horizontal length of a single wall connector shall be not greater than \_\_\_\_\_\_\_\_\_\_\_\_\_ percent of the height of the vent or chimney. A. 25 B. 50 C. 75 D. 100
75
REF = 503.10.8
The minimum dimension of an outdoor combustion air opening is ________ inches.
a. 3
b. 8
c. 6
d. 12
3
REF = 304.6
A gas piping system located inside a ________ building is limited to a maximum design operating pressure of 5 pounds per square inch gage (psig).
a. institutional
b. industrial
c. warehouse
d. research
institutional
REF = 402.7 #4
For label affixed to a listed fuel gas appliance, which of the following is not required information?
a. the appliance btu/hour rating
b. if the appliance is rated for 120 or 220 volt alternating current
c. the approved fuel
d. the minmum required clearnces
if the appliance is rated for 120 or 220 volt alternating current
REF= 301.5
For a connector with two 90 degree elbows and two 45 degree elbows, the maximum capacity of the vent connector shall be reduced by \_\_\_\_\_\_\_\_\_\_\_\_\_ percent from the capacity listed in the common vent sizing tables for two or more appliances. A. 20 B. 15 C. 10 D. 5
10
REF= 504.3.7
Chimneys serving medium heat appliances shall extend at least 10 feet higher than any portion of any building within _________ feet.
a. 20
b. 15
c. 25
d. 12
25
REF = 503.5.4
The minimum unobstructed total area of the outside and return air ducts or opening to a forced air warm air furnace shall be not less than _______ square inches per 1000 Btu/h output rating capacity of the furnace.
a. 6
b. 4
c. 3
d. 2
2
REF = 618.2
When a union is provided for an appliance connected by rigid metallic pipe, the union shall be accessible and located within ________ feet of the appliance.
a. 2
b. 3
c. 4
d. 6
6
REF = 411.1.6
The volume of gas to be provided must be determined directly from the _______ of the appliance served.
a. input rating
b. output rating
c. hourly load
d. operating pressure
input rating
REF = 402.2
A required conduit containing gas piping must extend not less than _______ inches beyond the point where the pipe emerges from the floor in the building.
a. 10
b. 6
c. 2
d. 3
2
REF = 404.8.1
In general, a vent connector for a Category 1 appliance shall slope upward toward the chimney or vent at least \_\_\_\_\_\_\_\_\_ inch per foot. A. 1/4 B. 1/2 C. 1/8 D. 3/8
1/4
REF = 503.10.7
The input rating of unvented room heaters is limited to a maximum _________ Btu/h.
a. 14,000
b. 28,000
c. 40,000
d. 54,000
40,000
REF = 621.3
Where there are multiple meters, the ________ must mark the piping system supplied by each meter with an approved permanent identification.
a. owner
b. gas supplier
c. installer
d. code official
installer
REF = 401.7
Where a screen is installed at a combustion air opening, the mesh size shall not be smaller than ______ inche.
a. 1/8
b. 1/2
c. 3/8
d. 1/4
1/4
REF = 304.10
Unless otherwise protected from impact, appliances located in a private garage shall be installed a minimum of __________ feet above the floor.
a. 12
b. 10
c. 8
d. 6
6
REF = 305.5
Fuel gas piping for other than dry gas conditions shall be sloped not less than _______ inches in 15 feeet to prevent traps.
a. 1
b. 3/4
c. 1/2
d. 1/4
1/4
REf =408.1
Exhaust ducts for domestic clothes dryers shall have a norminal size of ________ inches in diameter.
a. 6
b. 5
c. 4
d. 3
4
REF = 614.8.1
Where a reduction in clearance to combustible materals is permitted, the side clearance for an appliance is permitted to be reduced from 12 inches to a minimum of _______ inches by installing NO. 24 gage galvanized sheet metal with a ventilated air space.
a. 6
b. 9
c. 3
d. 4
4
Table 308.2
To prevent entry of room air into the flue, a _________ shall be provided below the point of connection of an appliance to the chimney flue serving a fireplace.
a. noncombustible seal
b. sheet metal collar
c. means of access
d. manual damper
a
REF = 501.7.1
Condensate piping for fuel burning condensing appliances shall maintain a minimum horizontal slope of __________ units vertical in 12 units horizontal.
a. 1/8
b. 1/4
c. 3/8
d. 1/2
1/8
REF = 307.2
On a roof with a 4/12 slope, an 8 inch type B vent located 12 feet from a vertical wall shall terminate a minimum of ________ inches above the roof.
a. 24
b. 12
c. 30
d. 18
12
REF = 503.6.5 Figure
A permit is not required for installation of a _________.
a. horizontal furnace
b. portable heating appliance
c. heat pump system
d. vented gas fireplace
b
REF= 106.2 #1
Screws or other fasteners used to secure joints in clothes dryer exhaust ducts are limited to a maximum of _________ inches penetration into the duct.
a. 1/16
b. 3/16
c. 1/8
d. 1/4
1/8
REF = 614.8.2
Gas appliance connections to a masonry chimney flue must be at a point not less than _________ inches above the lowest portion of the interior of the chimney flue.
a. 6
b. 24
c. 18
d. 12
12
REF = 501.9
When the provisions of the IFGC are applicable, a change of accupancy requires _______.
a. a permit
b. a certificate of occupancy
c. approval
d. inspection
c
REF= 102.5
Unvented room heaters shall not be installed within Group ________ occupancies.
a. E
b. B
c. F
d. M
E
REF = 621.4
Given: A 12 inch diameter listed gas vent with a listed cap is located 9 feet from a vertical wall. The gas vent is being terminated outside a building that has a roof slope of 12/12. What is the minimum termination distance above the roof?
a. 3 feet
b. 3.25 feet
c. 3.5 feet
d. 4 feet
4 feet
REF = 503.6.5 Figure
The code officals is authorized to accept reports of inspection by ________.
a. specialized contractors
b. approved agencies or individuals
c. registered design professionals
d. special inspectors
b
REF= 104.3
Masonry chimneys shall be constructed in accordance with the \_\_\_\_\_\_\_\_\_\_\_\_\_\_. A. International fire code b. international building code c. international mechanical code d. international residential code
International Building Code (IBC)
REF = 501.3
When provided, a timer controlling the main burner of a sauna is limited to a maximum operating time of __________ minutes.
a. 30
b. 60
c. 90
d. 120
60
REF = 615.6.1
The required ventilation opening to a sauna room shall be not less than _________ inches by _________- inches.
a. 4,8
b. 8,8
c. 4, 12
d. 8,12
4, 8
REF = 615.7
For single wall metal peipe to be used outdoor for venting appliances, the 99 percent winter design temperture must not be less than ___________ degrees Fahrenheit.
32
REF = 503.7.2
Where a single wall metal pipe vent passes through a roof a constructed of combustible material, a noncombustible, nonventilating thimble shall extend at least \_\_\_\_\_\_\_ inches above and 6 inches below the roof. A. 12 B. 6 C. 24 D. 18
18
REF = 503.7.5
Only in an emergency situation that poses an immediate hazard to life or property is the code official authorized to _______.
a. require disconnection of utility service
b. declare the installation unsafe
c. condemn the installation
d. post a stop work order
require disconnection of utility service
REF= 108.7.2
A mechanical draft venting system terminates through an exterior wall directly above an operable window. The vent termination must be located a minimum of \_\_\_\_\_\_\_\_ above the window. A. 3 feet B. 4 feet C. 1 foot D. 2 feet
1 foot
REF = 503.8 Exception #2
Gas piping supports for 1/2 inch copper tubing shall be spaces no more than ________ feet apart.
a. 4
b. 6
c. 8
d. 10
4
REF = 415.1 Table
Where vehicles are capable of passing under an appliance installed in a public garage, the appliance shall be installed a minimum of _______ inches higher than the tallest vehicle garage door opening.
a. 24
b. 18
c. 12
d. 6
12
REF = 305.4
Where commerical cooking appliances are vented by means of a Type 1 or 2 kicken hood, an interlock shall prevent the \_\_\_\_\_\_\_\_\_\_ from operating when the exhaust system is not operating. A. Standing pilots B. Appliance C. Hood fan D. Solenoid valve
appliance
REF = 505.1.1
Where, in a specific case, different sections of the code specify different materials, methods of construction or other requirments, the _______ requirements shall apply.
a. general
b. most restrictive
c. specific
d. least restrictive
b
REF= 102.1
Supports for 1 inch steel gas piping shall be spaced no more than _________ feet apart.
a. 4
b. 6
c. 8
d. 10
8
REF = 415.1 Table
A single wall metal vent shall terminate at least \_\_\_\_\_\_\_\_\_ inches higher than any portion of a building within 10 feet horizontally. A. 24 B. 30 C. 36 D. 42
24
REF = 503.7.3
For appliances designed to operate at 14 inches w.c or less, overpressure protection devices are required only if the service supply pressure exceeds _______ psi.
a. 1
b. 2
c. 4
d. 6
2
REF = 416.1
Required guards installed around rooftop service platforms shall be not less than _______ inches in height.
a. 30
b. 36
c. 42
d. 48
42
REF = 306.6
Where required to protect vents from physical damage, protective shield plates shall extend a minimum of _______ inches above sole plates and below top plates.
a. 4
b. 2
c. 3 1/2
d. 1 1/2
4
REF = 502.7
Where steel shield plates are required to protect concealed gas piping installed through holes in wood studs, the shield plates must extend a minimum of _________ inches to each side of the stud.
a. 4
b. 6
c. 1 1/2
d. 2
4
REF = 404.7.1
Equipment and appliances having an ignition source shall ________ in Group H Occupancies or control areas where open use, handling or dispensing of combustible, flammable or explosive materials occurs.
a. not be installed
b. be elevated
c. be listed as flammable
d. be isolated in a separate room
not be installed
REF = 305.2
T/ F Permits from the city/ county are required for installation of furnaces and water heaters only.
F
T/F Heat pumps require 6 sq in of return per 1000 BTU output
T
T/F A gas license is required to install all gas fired appliances.
T
T/F Draft hood appliances must have a minimum vent height of 10 feet.
F
T/F Installation instructions must be left with the customer for filing in an unknown place.
F
T/ F If an appliance is equipped with a draft hood, there is no need for a vent.
F
T/ F If multiple meters are installed, the meter will be marked with meter tags indicating the address served.
T
T/ F Commercial buildings require exterior or interior permanently installed ladders of over 16’ in height.
T
T/ F Thread compounds must be used on the female threads only.
F
T/ F Service side clearance for gas appliances is 30’
T
T/F A gas license may be transferred to a trustworthy individual working for the same company with the same years of experience
F
T/ F A flex line for a furnace must be no longer then 3”
T
T/F The longest gas connector for a domestic dryer is 6’
T
T/ F Combustion chambers will be allowed to clear of combustion gasses prior to lighting the pilot.
T
T/F The city/ county is responsible for assuring the equipment is accessible for inspection.
F
T/F Once the gas piping is coupled up for all fittings that were not under pressure will be soap tested
T
T/F Vent connectors may be one size smaller than the draft hood outlet
F
T/ F The two ways to check input to a gas appliance are clocking the meter and adjusting the limit switch
F
T/ F If the appliance is AGA approved it can be installed with no clearance to combustibles.
F
T/F A fan assisted appliance may be vented into a clay lined chimney without a draft hood appliance.
F
Hydrogen pressure relief devices require
a. check valves
b. protection from freezing
c. ready access
d. locked open valves
c
REF = 703.3.7
Hydrogen generating and refueling appliances located in automotive motor fuel dispensing facilities and repair garages _________-.
a. are limited to a storage capacity of 250 cubic feet
b. require exhaust ventilation
c. must comply with NFPA 72
d. shall be enclosed in a separate hydrogen fuel gas room
b
REF = 703.1
The nontoxic gas in a gaseous hydrogen system must contain not less ________ percent hydrogen by volume.
a. 90
b. 95
c. 98
d. 99.5
95
REF = 702.1
When located in a private garage of a single family dwelling regulated by the International Residential Code, gaseous hydrgen storage cylinders shall not exceed a capacity of ________ cubic feet.
a. 50
b. 150
c. 250
d. 350
250
REF = 703.2.1
For working pressures at or above 125 psig, the pneumatic testing on gaseous hydrogen systems shall be not less than _________ percent of the maximum working pressure.
a. 60
b. 110
c. 75
d. 120
110
REF = 704.1.2.3.4
Compressed gas containers, cyinders and tanks, except those with a water volume less than _________ gallons and those designed for use in a horizontal position, shall be used in an upright position with the valve end up.
a. 2.3
b. 1.3
c. 3.3
d. 4.3
B
REF = 1.3
Hydogen piping systems shall be provided with markings at intervals not exceeding __________ feet.
a. 20
b. 25
c. 8
d. 16
20
REF = 704.1.2.2 # 4
Valves including shutoffs, check valves and other mechanical restrictions shall not be installed between a hydrogen storage container and a _______________.
a. hydrogen generating appliance
b. fuel dispenser
c. pressure vessel
d. pressure relief device
D
REF = 703.3.1
Piping, tubing and fittings coveying gaseous hydrogen shall be designed and installed in accordance with the IFGC and the \_\_\_\_\_\_\_\_\_\_\_\_\_. a. listing agency b. International Mechanical Code c. International Building Code D. International Fire Code
D
REF = 704.1.2
Hydrogen piping systems shall be provided with marking at each ____________.
a. hanger or anchor
b. connecter
c. appliance
d. wall penetration
D
REF = 704.1.2.2 #2
Hydrogen piping systems shall be provided with marking at each ____________.
a. hanger or anchor
b. connecter
c. appliance
d. wall penetration
D
REF = 704.1.2.2 #2
The IFGC requires piping and tubing for hydrogen gas systems to be listed or approved for the application, or the materials must be ______________.
a. cast iron
b. polyethylene
c. 300 series stainless steel
d. CSST
C
REF = 704.1.2.3
For a hydrogen piping system, the pneumatic test pressure shall be not less than _________ psig.
a. 5
b. 10
c. 25
d. 50
5
REF = 705.3.2
Brazing alloys used for joints in hydrogen piping systems shall have a melting point greater than _________ degrees Fahenheit.
a. 500
b. 750
c. 1000
d. 1500
1000
REF = 704.1.2.4.1
Mecahnical joints in a hydrogen piping system that do not maintain electrical continuity through the joint require a ____________.
a. ground conductor
b. grounding terminal
c. bonding bushing
d. bonding jumper
D
REF = 704.1.2.4.2
Prior to system operation, a hydrogen piping system shall have an inspection conducted or verified by the __________-.
a. equipment manufacturer
b. engineer of record
c. code official
d. special inspector
c
REF = 705.2
The hydrostatic test pressure on a hydrogen piping system shall be not less than __________- psig.
a. 50
b. 100
c. 150
d. 200
100
REF = 705.3.1
Which method of pipe assembly is limited to installations within hydrogen cutoff rooms or installations outside of buildings?
a. flange connections
b. welded connection
c. brazed connections
d. compression fittings
A
REF = 704.1.2.4
The minimum test duration on a hydrogen piping system shall be _________ minutes.
a. 15
b. 30
c. 45
d. 60
30
REF = 705.3.5
Tests requiring a pressure of 10 psig or less shall utilize a testing gauge increments of _________ psi or less.
a. 0.05
b. 0.10
c. 0.50
d. 1.00
0.10
REf = 705.3.6 #1
A gaseous hydrogen system is designed to generate, store and distribute a nontoxic hydrogen gas mixture containing not more than ____________ percent oxygen.
a. 0.5
b. 1.0
c. 1.5
d. 2.0
1.0
REF = 702.1
Tests requiring a pressure greater than 100 psig shall utilize a testing gauge having increments of ___________ psi or less.
a. 0.5
b. 1.0
c. 2.0
d. 5.0
2.0
REF = 705.3.6 # 3
Vent pipe outlets for purging hydrogen piping systems must be located a minimum of ___________ feet above the adjacent ground level.
a. 8
b. 10
c. 12
d. 15
8
REF = 705.5.3.1
Gases being purged from a hydogen piping system shall be discharged outdoors and shall be at least ___________ feet from building openings and lot lines.
a. 5
b. 10
c. 20
d. 30
5
REF = 705.5.3.1
The hydrostatic test pressure on a hydrogen piping system shall be not less than _________ times the maximum working pressure..
a. 2
b. 3
c. 1 1/2
d. 2 1/2
1 1/2
REF = 705.3.1
A clothes dryer installed in a residential bathroom shall have a ________ that communicates with a space outside a ____________, bathroom, toilt, room or storage closet.
a. dampers opening,laundry room
b. dampered opening, bedrrom
c. permanent opening, bedrrom
d. permanent opening, laundry room
permanent opening , bedroom
Gas piping installed underground beneath building is prohibited except where the piping is
A. Enclosed in concrete to avoid movement and corrosion
B. Enclosed in conduit of 26 gauge galvanized pipe 1.5 times larger than the gas pipe
C. Enclosed in conduit of wrought iron pipe
D. Both A and B
C
