(U//FOUO) The Transportation Security Administration’s (TSA) mission includes enhancing the security preparedness of our nation’s hazardous liquid and natural gas pipeline systems. This 2008 threat assessment addresses terrorist attacks against oil and gas pipeline facilities overseas and considers the potential for attacks against the oil and gas pipeline industry in the United States. Pipelines are a mode of transportation with distinct characteristics and security requirements. Pipelines operate in all 50 states and transport more than two-thirds of all petroleum products, including gasoline, diesel and jet fuel, home heating oil, kerosene, and propane. Natural gas transmission and distribution pipelines transport natural gas from sources to residential, commercial, and industrial customers. Hazardous liquid pipelines transport crude oil to refineries and refined oil products to product terminals and airports. America depends daily on its pipelines to meet its oil and gas requirements.
Pipeline and Hazardous Materials Safety Administration (PHMSA) Gas Distribution Pipeline Safety Report
PHMSA made an adjustment to the expected value of property damage occurring from 2001 through 2005, since some of the property damage was caused by Hurricane Katrina in 2005 (an outlier), which skewed the damages above expectations and which this rule was not designed to mitigate. A more accurate expected value of benefits, perhaps reflective of a longer timeline and taking into account risks and consequences not experienced from 2001 through 2005, would show a higher expected benefit of this rule} It is possible for high-consequence accidents to occur, in which there are a disproportionately large number of casualties (Le., deaths and serious injuries), since a portion of gas distribution piping is located in densely populated areas with schools and businesses containing a large number of people.