TSSA G3 EXAM ACTUAL QUESTIONS AND

TSSA G3 EXAM (ACTUAL / ) QUESTIONS AND

VERIFIED CORRECT ANSWERS UPDATED

When a quick-disconnect is used on a gas supply system, what device shall be providing in the piping system and where shall it be installed? - ---Answers---A shut off upstream of the quick-disconnect.

Can a quick disconnect be used in place of a manual shut-off valve? - ---Answers---No

Can rubber gaskets be used in gas piping flanges? - --- Answers---No

Are machined brass flare fittings allowed? - ---Answers---No

Are forged brass flare fittings allowed? - ---Answers---Yes

Are compression flare fittings allowed? - ---Answers---No

Are soft-soldered brazed fittings allowed? - ---Answers---No

Are Swagelok fittings allowed? - ---Answers---Yes

Are press-connected fittings allowed? - ---Answers---Yes

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What is the minimum and maximum length of hose allowed for connecting to a construction heater? - ---Answers---15' to 75'

During the period when an appliance is not connected to an outlet of piping system, how shall the outlet be made gas tight?

• ---Answers---Capped

What is the minimum length and maximum diameter of a dirt pocket on an NPS 6 pipe drop to an appliance? - ---Answers-- -6" length and 2" diameter

Can street elbows or closed nipples be used on a gas piping system? - ---Answers---No

What is the maximum length of a flexible connector used to connect a suspended appliance to a piping system? - --- Answers---2'

Can air be purged out of a gas piping system into a combustion chamber? - ---Answers---No

What is the maximum propane supply pressure allowed in a single-family dwelling? - ---Answers---2 psig

What is the maximum propane supply pressure allowed in a central mechanical room located on the roof of a commercial building? - ---Answers---20 psig 2 / 4

What is the maximum allowable natural gas pressure allowed in an industrial mechanical room? - ---Answers---66 psi

What is the maximum propane pressure allowed inside an industrial building? - ---Answers---20 psi

What type of fittings may be used with steel pipe? - --- Answers---Malleable iron

The unthreaded portion of a piping outlet shall extend how many inches through a floor? - ---Answers---2"

What is the minimum distance below a commercial parking lot gas piping is allowed to be buried? - ---Answers---24"

Underground piping joints shall be: - ---Answers---Welded or

press-connect fittings

Piping joint tape shall be: - ---Answers---Approved

What is the maximum allowed spacing for supports on NPS 3 horizontal piping? - ---Answers---15'

Coated copper tubing or corrugated stainless-steel tubing employed on a 2 psi supply of 150 feet shall be pressure tested

to: - ---Answers---15 psig for 15 minutes 3 / 4

Who is permitted to weld gas piping? - ---Answers---A welder certified by TSSA's Boiler and Pressure Vessels Division who is using an approved welding method

Piping of NPS ____ and over should have welded pipe joints - - --Answers---2.5"

The length and diameter of a 4" dirt pocket shall be? - --- Answers---4" long and 2" diameter

Hose used to connect the propane supply to a domestic water

heater shall: - ---Answers---Not be permitted

When installed underground, which type of copper tuning does not require a protective coating? - ---Answers---Type K

Does a water heater require a drip pocket? - ---Answers--- Yes

Plastic piping and tubing must be protected from: - ---

Answers---Sunlight

What is the maximum length of a corrugated metal connector

used to connect a range to the gas supply line in a dwelling is:

• ---Answers---6'
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