With carbon capture pipelines proliferating, U.S. regulators propose stricter rules to prevent a leak like on in Satartia, Mississippi, in 2020

A U.S. regulator on Wednesday proposed new rules to strengthen safety requirements for carbon dioxide and hazardous liquid pipelines at a time when carbon capture technologies see increased adoption to fight global warming.

The proposed rule, if adopted, would require CO2 pipeline operators to train emergency responders and ensure local first responders have the necessary detection equipment in the event of an emergency.

Federal pipeline safety regulators have proposed stronger standards for carbon-dioxide pipelines in the Biden administration's waning days. Why it matters: The Pipeline and Hazardous Materials Safety Administration's proposed rule is a long-awaited effort to address safety concerns around pipelines needed to scale up carbon capture and storage projects.