Pipeline Safety Alert
(by James Curry, Keith Coyle and Brianne Kurdock)
On April 10, 2019, President Donald Trump signed an Executive Order on Promoting Energy Infrastructure and Economic Growth (Executive Order). In addition to outlining U.S. policy toward private investment in energy infrastructure and directing the U.S. Environmental Protection Agency to take certain actions to improve the permitting process under the Clean Water Act, the Executive Order instructs the U.S. Department of Transportation (DOT) to update the federal safety standards for liquefied natural gas (LNG) facilities. The Executive Order notes that DOT originally issued those safety standards nearly four decades ago and states that the current regulations are not appropriate for “modern, large-scale liquefaction facilities[.]” Accordingly, the Executive Order directs DOT to finalize new LNG regulations within 13 months, or by no later than May 2020, an ambitious deadline given the complex issues involved and typical timeframe for completing the federal rulemaking process.
What is LNG?
LNG is natural gas that is cooled through a liquefaction process to minus 260 degrees Fahrenheit. Natural gas converts to a liquid state at that temperature and occupies a volume that is 600 times smaller than its gaseous counterpart. The reduced volume and high energy density of LNG makes long-distance transportation commercially viable, particularly to markets that lack access to local supplies of natural gas. LNG facilities create three primary risks from a safety perspective. As a cryogenic liquid, LNG can cause frostbite or severe burns upon contact with skin. LNG also vaporizes when released into the environment and can ignite in certain air-gas mixtures. High concentrations of LNG vapors may displace oxygen, creating the risk of asphyxiation in confined spaces. …