TSSA Gas Technician 3 (G3) case studies
TSSA Gas Technician 3 (G3) · Put your knowledge to work in context.
The Gas Technician 3 (G3) credential is the entry-level certification in Ontario's fuels safety system, regulated by the Technical Standards and Safety Authority (TSSA). TSSA describes itself as "Ontario's public safety regulator for Elevating & Amusement Devices, Ski Lifts, Fuels, Boilers & Pressure Vessels and Operating Engineers," and administers certification for fuels industry professionals alongside exam registration, accredited training and licensing services. The TSSA Gas Technician 3 (G3) case studies are 5 cases and about 2,648 words.
1Sizing a Garage Heater Branch on an Existing 1/2-Inch Line
A homeowner wants a 30,000 Btu/h natural-gas unit heater added in a detached garage. The existing 1/2-in.
550 words, about 3 min2Confined-Space Combustion Air After Weatherization
A 1960s bungalow has a 50,000 Btu/h natural-draft water heater and an 80,000 Btu/h natural-draft furnace side by side in an 8 ft by 10 ft room with an 8 ft ceiling. Both vent into a shared masonry chimney on an exterior wall.
546 words, about 3 min3Meter Union Leak and a Customer Who Refuses Shutdown
On a routine service call for a kitchen range, the technician smells gas at the meter set outside a duplex. A soap bubble test at the union downstream of the meter shows a growing bubble.
499 words, about 2 min4Propane Conversion on a Gas Clothes Dryer
A cottage owner buys a used 20,000 Btu/h gas clothes dryer rated for natural gas and asks for a propane conversion. The conversion kit includes new burner orifices and a regulator spring.
550 words, about 3 min5Yellow Flame and Spillage on a Natural-Draft Water Heater
A 40,000 Btu/h natural-draft storage water heater in a basement has a lazy yellow flame, black soot on the burner door, and water dripping from the flue collar. Supply pressure is 7 in.
503 words, about 3 min