GPT Tools & Equipment Operation 3

Question 1

Which instrument is used to verify that a gas valve is fully closed before disconnecting a gas appliance?

Accepted Answer

Combustible gas detector

Answer

Manometer

Answer

Pipe locator

Answer

Pressure gauge with shutoff

Question 2

A diaphragm-type gas pressure gauge reads in inches of water column (in. WC). What is 1 psi approximately equal to?

Accepted Answer

27.7 in. WC

Answer

14 in. WC

Answer

7.5 in. WC

Answer

55 in. WC

Question 3

What is the correct way to store oxygen and acetylene cylinders when not in use?

Accepted Answer

Separated by at least 20 feet or a 5-foot non-combustible barrier

Answer

Together in the same cage for convenience

Answer

Lying horizontally to prevent tip-over

Answer

Upright but uncapped to allow pressure release

Question 4

When a gas technician uses a rotary pipe threader (power drive), what lubricant must be continuously applied?

Accepted Answer

Cutting oil (thread-cutting fluid)

Answer

WD-40 spray lubricant

Answer

SAE 30 motor oil

Answer

Silicone grease

Question 5

Which hand tool is specifically designed to tighten or remove compression-style gas fittings without damaging the fitting body?

Accepted Answer

Smooth-jaw flare-nut (line) wrench

Answer

Channel-lock (tongue-and-groove) pliers

Answer

Pipe wrench with serrated jaws

Answer

Locking pliers (Vise-Grips)

Question 6

A gas technician needs to make a 90-degree bend in CSST (corrugated stainless steel tubing). What is the correct method?

Accepted Answer

Use an approved bending guide or radius form included with the CSST system

Answer

Heat the CSST with a torch and bend by hand

Answer

Install a threaded 90-degree elbow fitting instead of bending

Answer

Clamp the CSST in a pipe vise and force the bend manually

Question 7

Which PPE is mandatory when cutting or threading steel pipe with power equipment?

Accepted Answer

Safety glasses or face shield, hearing protection, and gloves

Answer

Chemical splash goggles only

Answer

Hard hat and steel-toe boots only

Answer

Respirator with organic vapor cartridge