TSSA Gas Technician 3 Exam: Challenge EX 9000 Email to a Friend Our TSSA Gas Technician 3 Exam: Challenge exam is the Technical Standards & Safety Authority (TSSA) challenge exam for the theoretical/written portion of the Gas Technician 3 certification. This exam is intended both for those who have not completed prior gas technician training with George Brown College and for George Brown College distance education students who have passed our HVAC 9043 Gas Technician 3 Theory course. Note(s) Exam Delivery Method: Exams are special ordered, so you must register at least 40 days prior to the scheduled exam date. (If you need to withdraw or transfer to another section, you must do so a minimum of 15 business days prior to the original exam sitting or you will forfeit the exam fee. There are no refunds for unwritten exams.) You must present a valid government-issued photo identification to write the exam, and only CSA Group hard-copy code books are permitted in the exam room. Prerequisite(s) You must have completed your Gas Technician 3 training within the one year TSSA time limit. Contact Information 416-415-5000, ext. 4861 email@example.com Course Section(s) Available Class dates and registration for the upcoming fall term will be available on this website in July. Please visit this page again at that time. If you would like to receive an email notification when the fall term is released, complete our sign-up form. Some courses require you to purchase a textbook. The cost of the textbook is not included in the course fee unless otherwise indicated. If there is a textbook assigned for this course, it will be listed on the bookstore website.