CRYOGENIC LIQUID FLOW TESTING (VIDEO) Southwest Research Institute This video is under embargo. Please login to access this video. Caption SwRI conducted tests to determine their viability for liquid natural gas tanks in the event of a train derailment. The Institute contributed to a Federal Rail Administration report that shows that a study conducted by SwRI demonstrated that the pressure relief valves work as designed to prevent overpressurization and explosion if a derailment occurs. Credit Southwest Research Institute Usage Restrictions Images/Videos may be used by the public for educational and informational purposes only. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.