G3 Safety and Compliance Standards 2

Question 1

What is the maximum allowable ambient CO level in occupied spaces?

Accepted Answer

25 ppm

Answer

25 ppm is the action level above which investigation and corrective action are required.

Question 2

What safety device prevents gas flow if a standing pilot goes out?

Accepted Answer

Thermocouple and gas valve safety circuit

Answer

The thermocouple generates voltage from pilot heat; when the pilot goes out, voltage drops and the valve closes.

Question 3

What is the purpose of a high-temperature limit switch?

Accepted Answer

To shut off the burner if the appliance overheats

Answer

It shuts off the gas burner if temperatures exceed safe limits.

Question 4

How often should gas appliances be professionally inspected?

Accepted Answer

At least annually, before each heating season

Answer

Annual inspection is the industry standard, ideally before heating season.

Question 5

What is a TSSA red tag or compliance order?

Accepted Answer

An official order requiring corrective action for a code violation, potentially shutting off gas

Answer

A red tag documents a violation and requires correction, potentially with immediate gas shutoff.

G3 - Gas Technician Level 3 Certification Practice Test