Ontario construction heater operator knowledge review: propane, cylinders, heaters, torches and site safety
Practice on the go and jump straight back to where you left off.
About the credential
In Ontario, a person who connects, lights or disconnects a propane construction heater or torch must hold the right credential. Under O. Reg. 215/01, a CH-02 certificate, or a record of training for the purpose, covers construction heaters and torches of 400,000 Btuh or less; CH-01 covers any input. A record of training needs full retraining or a skills retest every three years.
On site, the construction regulation O. Reg. 213/91 sets rules for heater location, ventilation, exits, fuel lines, cylinders and fire extinguishers. This quiz also draws on the IHSA Construction Health and Safety Manual and the construction-heater clauses of CSA B149.1 and B149.2 as quoted in a public Alberta bulletin (the codes themselves are not free and were not read). Alberta-only rules are labelled; the quiz is framed for Ontario.
There is no standardized TSSA exam for CH-02: the course is delivered by TSSA-accredited providers whose tests differ. ExamHub's test mode draws 30 questions with a 75% target as practice only: it is a practice length, not an official format or pass mark, and not your provider's test.
For context, one provider's published format (IHSA, Propane in Construction): a 27-question multiple-choice evaluation with a 75% pass mark, plus hands-on tasks such as handling a cylinder, manifolding three cylinders and connecting, lighting and shutting down a heater and a torch. This is one provider's published format, not a TSSA standard; other providers differ. Fuel-industry safety is overseen by TSSA.
Related practice: TSSA G.3 gas technician and Working at Heights.
Sources checked October 2026. See how ExamHub writes and checks questions.
What's covered
The categories follow what a CH-02 course teaches: certificates and regulations, propane, cylinders, heaters and torches, and emergencies.
Try a few
Three sample questions from the bank, with the answer and the explanation.
Why: A holder of a record of training must undergo full retraining or skills retesting at three-year intervals, or at shorter intervals set by the director if the person's competence is in question. This is why provider cards carry a three-year expiry.
Why: Cylinder valves in use must be fully opened and connections checked with soapy water or a leak detector. Gas odour or frost on a fitting are not always reliable. The example manual specifically forbids an open flame for leak checks.
Why: IHSA's safety talk says to always have a 4A40BC-rated fire extinguisher within 6 m (20 ft) of each worker using propane-fired equipment. The IHSA manual says to have one on hand before lighting the heater.
FAQ
No. TSSA does not run a CH-02 exam. CH-02 is a record of training from a TSSA-accredited provider, and each provider sets its own test. ExamHub's test mode draws 30 questions with a 75% target and a 45-minute timer as practice only.
Under O. Reg. 215/01 s. 48, a CH-02 holder may activate construction heaters and torches of 400,000 Btuh or less and connect them to, or disconnect them from, piping, tubing, a refuelling appliance, a container or a natural gas meter (the CH-01 functions, limited to this input). CH-01 covers any Btuh input.
Both let the holder activate propane, natural gas or oil-fired construction heaters and torches and connect or disconnect them. CH-01 has no limit on input; CH-02 covers the same functions only on equipment of 400,000 Btuh or less (O. Reg. 215/01 ss. 47 and 48).
A holder must undergo full retraining or a skills retest at three-year intervals, or sooner if the person's competence is in question (O. Reg. 215/01 s. 54).
From O. Reg. 215/01, O. Reg. 213/91, the IHSA Construction Health and Safety Manual and propane safety talk, CSA B149.1 and B149.2 as quoted in an Alberta government bulletin, and a manufacturer's CSA 2.14 heater manual. Every question is original.
Yes. Use the language switch at the top of the page for the full French version.