CNG Examination Study Guides
Please note: Our exam dates and locations have changed.
To register for a CNG or LNG exam please go to CERTS
To register for a CNG or LNG exam please go to CERTS
CNG Regulations May 2021
Please use this link to access the May 2021 Regulations for Compressed Natural Gas. The current certification exams are based on this edition.
CNG Management Level
- Category 1 ASME and DOT Container Manufacturer
- Category 1A ASME Container Manufacturer
- Category 1B DOT Container Manufacturer
- Category 2 General Installers and Repairmen
- Category 3 Retail/Wholesale Dealer
- Category 4 DOT Cylinder Tester
- Category 5 Service Station or Cylinder Exchange Operation
CNG Employee Level
