Does the installation of fuel gas trains that meet the CSA B149.3 code require inspection and certification by a third party?

For fuel gas trains where the CSA B149.3 code is followed in the design of gas fired appliances (such as line heaters, tank heaters, glycol and amine reboilers, etc.), the as-built or record drawings for these facilities must clearly state they were designed and constructed in compliance with the requirements in CSA B149.3. It is a regulatory requirement that these drawings are stamped and signed by a professional engineer registered in B.C. The Commission does not require certification by a third party.