Not reinstalling the pressure transducers to monitor for overpressure in lines going to the point of use is a major oversight. The procedures in place were woefully inadequate and I suspect the gas company will be heavily censured. The National Transportation Safety Board probably pulls no punches when it comes to allocating blame. It will be interesting to view their final report.


https://www.ntsb.gov/investigations/AccidentReports/Pages/PLD18MR003-preliminary-report.aspx

https://eu.usatoday.com/story/news/nation/2018/11/15/ntsb-recommendations-columbia-gas-massachusetts-explosions-pipelines-nisour