Maine Gas Exam - With Codes Questions And Answers Latest Top Score.
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Course
Maine Gas
Institution
Maine Gas
Maine Gas Exam - With Codes Questions And Answers Latest Top Score.
Minimum vertical height for a Type B-W gas vent above the bottom of a wall furnace? - correct answer. 12 Feet
NFPA 54 12.7.2(3)
Minimum thickness of a steel striker barrier for gas tubing protection? - c...
Maine Gas Exam - With Codes Questions
And Answers Latest Top Score.
Minimum vertical height for a Type B-W gas vent above the bottom of a wall furnace? -
correct answer. 12 Feet
NFPA 54 12.7.2(3)
Minimum thickness of a steel striker barrier for gas tubing protection? - correct answer.
0.0508"
NFPA 54 7.3.4
What is the maximum temp that a clay flue liner must be able to withstand without
cracking? - correct answer. 1,800 degrees F
NFPA 54 12.6.1.3
Combustion air obtained from indoors on the same story shall have a minimum of... -
correct answer. Two openings. Each opening 1in squared/1000 btu/hr of all
appliances in space
NFPA 54 9.3.2.3
When gas is being supplied by a manifold located in a remote area, what is the
maximum distance the shutoff valve at the manifold can be located from the appliance?
- correct answer. 50 feet
NFPA 54 9.6.4.3
What reference standard covers the storage of liquid propane gas? - correct answer.
NFPA 58
, A service station is being built with one boiler 28 feet away from the meter that uses
natural gas; all other equipment is electric. What size K or L semi-rigid copper tubing
should be installed to supply 205 cu. ft. of gas per hour with an inlet pressure less than
2 psi, pressure drop of 0.3 in. W.C. and a specific gravity of 0.60? - correct answer.
1"
Maximum distance a gas shut-off valve can be installed from the equipment it serves? -
correct answer. 6 feet
NFPA 54 9.6.4.1
Maximum distance off the ceiling of the room shall an indoor combustion air opening be
installed? - correct answer. 12"
NFPA 54 9.3.2.3
What is the minimum required clearance for an unlisted pool heater on all sides and
rear? - correct answer. 12"
NFPA 54 10.21.2(3)
Flanges used for gas piping shall have gaskets made of an approved material designed
to withstand temperatures, pressure and chemical constituents of the gas. Which of the
following gasket materials is not acceptable? - correct answer. Rubber
NFPA 54 5.6.11
When corrosive or flammable fumes or gases are present near appliances, a safe
disposal method shall be provided. All of the following are considered flammable or
corrosive EXCEPT?! - correct answer. Anhydrous Citric Acid
When a mechanical appliance is installed in an excavation deeper than 12", what shall
the excavation be lined with? - correct answer. Copper pan, concrete pit, or other
suitable material
NFPA 54 10.11.9
Which type of regulator is used in series with an another pressure regulator for the
purpose of automatically taking over in an emergency the control of the pressure down
stream in case the pressure tends to exceed a set maximum? - correct answer.
Monitoring
NFPA 54 3.3.88.4
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