The Northeast Gas Association (NGA) administers a comprehensive Operator Qualification (OQ) Program.
OQ is a regulation of the Office of Pipeline Safety of the U.S. Department of Transportation (DOT). DOT's Operator Qualification (OQ) regulation 49 CFR 192 subpart N, requires operators to develop and maintain a qualification program for individuals performing covered tasks. The intent of the OQ rule is to minimize human error by establishing a verifiable and qualified workforce.
NGA's OQ Program includes numerous covered tasks. Each covered task requires a knowledge and/or skill evaluation.

Look for further information in the links below.

NGA OQ Task List

OQ (ITS) LMS Database

Prometric Online Testing Information

U.S. DOT Regulation

NGA "Written Plan"