G3 - Gas Technician Level 3 Codes, Acts, and Regulations Questions and Answers

Question 1

According to Ontario Regulation 215/01, a Gas Technician 3 (G3) certificate holder is permitted to work on gas appliances under what condition?

Accepted Answer

Under the general supervision of a G1, G2, or DA certificate holder

Answer

Independently on appliances up to 400,000 Btuh

Answer

Only on propane appliances after completing a specialized course

Answer

Under the direct supervision of another G3 certificate holder

Question 2

A G3 technician is assisting a G2 technician with the installation of a new natural gas furnace. They notice that the planned vent termination is located 2 feet below a window that can be opened. According to the CSA B149.1 Natural Gas and Propane Installation Code, what is the correct action to take?

Accepted Answer

Inform the G2 technician that the location does not meet the minimum required clearance.

Answer

Proceed with the installation as planned, as the clearance is sufficient.

Answer

Install a vent guard and proceed with the installation.

Answer

Relocate the vent termination to be at least 6 feet away from the window.

Question 3

Which of the following is the primary purpose of the Technical Standards and Safety Act, 2000 (TSSA)?

Accepted Answer

To enhance public safety by administering and enforcing technical standards.

Answer

To set the retail prices for natural gas and propane.

Answer

To provide training and apprenticeships for skilled trades.

Answer

To certify the energy efficiency of gas appliances.

Question 4

While performing maintenance on a water heater under the supervision of a G2 technician, a G3 technician discovers a condition they believe constitutes an immediate hazard. According to Ontario Regulation 212/01 (Gaseous Fuels), what is the first step the supervising technician must take?

Accepted Answer

Immediately shut off the supply of gas to the appliance.

Answer

Complete the maintenance and schedule a follow-up inspection.

Answer

Inform the customer that they have 30 days to correct the issue.

Answer

Tag the appliance with a 'B' tag.

Question 5

The CSA B149.1 Natural Gas and Propane Installation Code applies to which of the following installations?

Accepted Answer

Piping and tubing systems extending downstream from a natural gas meter.

Answer

Gas transmission pipelines operated by a utility.

Answer

The storage and handling of propane at a bulk plant.

Answer

The design of gas-fired turbines in a power generation facility.

Question 6

A G3 technician is asked by their supervising G2 to install a section of gas piping less than 2.5 inches in diameter. Under Ontario Regulation 215/01, is this activity permitted for a G3 holder?

Accepted Answer

Yes, if they have demonstrated the required skill and are working under general supervision.

Answer

No, only G2 and G1 technicians can install gas piping.

Answer

Yes, but only if they are under direct, in-person supervision at all times.

Answer

No, G3 technicians are only permitted to perform maintenance tasks.