Pipeline and Hazardous Materials Safety Administration (PHMSA) 49 CFR Part 199
This drug and alcohol testing is for operators and contractors of natural gas and other gas pipeline transportation, hazardous liquids pipeline transportation, and liquefied natural gas (LNG) pipeline facilities. Oil and gas pipeline companies must comply with the DOT regulations 49 CRF Part 199.
Covered Employee Definition:
A person who performs on a pipeline or liquefied natural gas (LNG) facility an operation, maintenance, or emergency-response function.

Post-Accident Testing Definition
PHMSA regulations in Part 199 require pipeline operators and operators of Liquefied Natural Gas (LNG) facilities to conduct post- accident drug and alcohol tests of covered employees. Within the mandated timelines after a reportable pipeline accident or incident, operators must drug and alcohol test each covered employee whose:
- Performance either contributed to the accident, or
- Cannot be completely discounted as a contributing factor to the accident or incident.
Because the covered employees are so vast, employers need to determine IF the employee contributed to the accident. It’s important the determination is made promptly to meet the timelines for testing required by the regulations.