Master Gas Trade Units 4 and 4a with free CSA B149.1-25 compliant practice questions for the TSSA G3 certification exam. These units cover CSA B149.1-25 code structure, Ontario Regulation 215/01, and TSSA Act requirements essential for gas technician work in Ontario.
📖 What These Units Cover
Gas Trade Units 4 and 4a cover the essential codes and regulations governing gas work in Ontario:
Unit 4 - Chapter 1: CSA Code Structure - Organization, sections, and how to navigate B149.1-25
Unit 4 - Chapter 2: Scope and Definitions - Understanding code applicability and terminology
Unit 4 - Chapter 3: General Requirements - Universal code requirements for gas installations
Exam Coverage: Code and regulations knowledge appears throughout the entire G3 exam. Approximately 25-30% of questions directly test code knowledge, with additional questions requiring code application.
💡 Study Tips for Units 4 & 4a
Become familiar with navigating the CSA B149.1-25 code structure and section organization
Understand the relationship between CSA codes, Ontario regulations, and the TSSA Act
Know the certification levels (G3, G2, G1) and their scope of work
Study TSSA inspection procedures and compliance requirements
Practice using the code to answer scenario-based questions
Unit 4 & 4a - Codes and Regulations
Gas Trade Resource - Chapter Questions
⚠️ Independent Educational Content
This content is provided by LARK Labs as an independent educational resource. We are not affiliated with CSA Group or any regulatory body. These materials complement official resources but do not replace certified instruction.