TSSA Gas Technician 1 (G1) case studies
TSSA Gas Technician 1 (G1) · Put your knowledge to work in context.
The Gas Technician 1 (G1) credential sits at the top of Ontario's gas technician certification ladder and is administered within the fuels safety framework overseen by the Technical Standards and Safety Authority (TSSA), Ontario's public safety regulator for Fuels along with Elevating & Amusement Devices, Ski Lifts, Boilers & Pressure Vessels and Operating Engineers. This independent study page is written for candidates who already hold a lower gas technician class, or who are working toward the G1 scope, and who need a structured way to revise the technical material before writing the certification exam. The TSSA Gas Technician 1 (G1) case studies are 5 cases and about 2,984 words.
1Spillage in a Tight Basement with a Common Chimney
A 1978 two-storey house has a 100,000 BTU/h natural-draft furnace and a 40,000 BTU/h power-vented water heater in a 12 ft × 14 ft basement room with a 7 ft 6 in ceiling. The room has one louvered door (24 in × 12 in, metal louvers) to the finished basement; there is no outside combustion-air duct.
681 words, about 3 min2Added Load on an Existing 1/2 in Gas Line and CSST Routing
A 1950s house has a 1/2 in black-iron gas line from the meter to an 80,000 BTU/h furnace. The owner is adding a 199,000 BTU/h tankless water heater and a 60,000 BTU/h gas range.
603 words, about 3 min3Intermittent DSI Lockout on a Commercial Convection Oven
A commercial kitchen has a 120,000 BTU/h direct-spark-ignition convection oven. The oven locks out intermittently after 3 to 5 minutes of operation, more often when the kitchen hood exhaust is at high speed.
548 words, about 3 min4Field Conversion to Propane with the Wrong Orifices
A 150,000 BTU/h cast-iron boiler in a basement was field-converted from natural gas to propane with a manufacturer's conversion kit. The installer replaced the gas valve spring but left the original natural-gas main burner orifices in place.
595 words, about 3 min5Unvented Bedroom Heater and an Unprotected Garage Unit Heater
A gas technician responds to a no-heat call at a tenant-occupied duplex. In a bedroom, the tenant is using a 30,000 BTU/h unvented blue-flame space heater connected to a wall with a flexible connector that passes through the wall.
557 words, about 3 min