Natural gas (1 - 10 of 25 items)
Maritime Transportation: Implications of Using U.S. Liquefied-Natural-Gas Carriers for Exports
GAO-16-104: Published: Dec 3, 2015. Publicly Released: Dec 3, 2015.
According to Department of Energy (DOE) and industry expectations, in the next few years the United States is expected to change from a net importer of natural gas to a net exporter, with those exports destined for different regions of the world, especially Asia. Five large-scale U.S. liquefaction facilitiesâ€”necessary for conversion of natural gas to liquefied natural gas (LNG) (see fig. below)â...
Pipeline Safety: Department of Transportation Needs to Complete Regulatory, Data, and Guidance Efforts
GAO-15-843T: Published: Sep 29, 2015. Publicly Released: Sep 29, 2015.
The Department of Transportation's (DOT) Pipeline and Hazardous Materials Safety Administration (PHMSA) has begun but not completed efforts to improve pipeline safety in response to GAO's prior recommendations:Gathering pipelines : In 2012, GAO found that while gathering pipelines that are not regulated by PHMSA were generally considered to present less safety risk than other pipelines, PHMSA did...
Oil and Gas Transportation: Department of Transportation Is Taking Actions to Address Rail Safety, but Additional Actions Are Needed to Improve Pipeline Safety
GAO-14-667: Published: Aug 21, 2014. Publicly Released: Sep 22, 2014.
Increased oil and gas production presents challenges for transportation infrastructure because some of this increase is in areas with limited transportation linkages. For example, insufficient pipeline capacity to transport crude oil has resulted in the increased use of rail, truck, and barge to move oil to refineries, according to government and industry studies and publications GAO reviewed. The...
Gas Pipeline Safety: Guidance and More Information Needed before Using Risk-Based Reassessment Intervals
GAO-13-577: Published: Jun 27, 2013. Publicly Released: Jun 27, 2013.
Baseline assessment and reassessment data collected by the Department of Transportation's (DOT) Pipeline and Hazardous Materials Safety Administration (PHMSA) since 2004 show that pipeline operators are making repairs in highly populated or frequented areas ("high consequence areas"). For example, from 2004 to 2009, operators made 1,080 immediate repairs. While operators can use assessment data to...
Pipeline Safety: Better Data and Guidance Could Improve Operators' Responses to Incidents
GAO-13-284T: Published: Jan 28, 2013. Publicly Released: Jan 28, 2013.
Numerous variables--some of which are under operators' control--influence the ability of transmission pipeline operators to respond to incidents. For example, the location of response personnel and the use of manual or automated valves can affect the amount of time it takes for operators to respond to incidents. However, because the advantages and disadvantages of installing an automated valve are...
Ownership by Minority, Female, and Disadvantaged Firms in the Pipeline Industry
GAO-12-896R: Published: Aug 2, 2012. Publicly Released: Aug 2, 2012.
Minority- or female-owned, minority-owned, and female-owned firms represented 15 percent, 6 percent and 10 percent, respectively, of firms in the U.S. pipeline industry in 2007. In terms of market share, minority- or female-owned firms are estimated to have accounted for a total of 13 percent of industry receipts, with minority-owned firms having accounted for 3 percent and female-owned firms havi...
Pipeline Safety:Collecting Data and Sharing Information on Federally Unregulated Gathering Pipelines Could Help Enhance Safety
GAO-12-388: Published: Mar 22, 2012. Publicly Released: Mar 22, 2012.
While the safety risks of onshore gathering pipelines that are not regulated by PHMSA are generally considered to be lower than for other types of pipelines, PHMSA does not collect comprehensive data to identify the safety risks of unregulated gathering pipelines. In response to a GAO survey, state pipeline safety agencies cited construction quality, maintenance practices, unknown or uncertain loc...
Safety Effects of Less Prescriptive Requirements for Low-Stress Natural Gas Transmission Pipelines Are Uncertain
GAO-12-389R: Published: Feb 16, 2012. Publicly Released: Feb 16, 2012.
Applying PHMSAs new distribution integrity management requirements to low-stress transmission pipelines would result in less prescriptive safety requirements for these pipelines. Overall, requirements for distribution pipelines are less prescriptive than requirements for transmission pipelines in part because the former operate at lower pressure and pose lower risks in general than the latte...
Natural Gas Pipeline Safety: Integrity Management Benefits Public Safety, but Consistency of Performance Measures Should be Improved
GAO-06-946: Published: Sep 8, 2006. Publicly Released: Sep 8, 2006.
The Pipeline Safety Improvement Act of 2002 established a risk-based program for gas transmission pipelines--the integrity management program. The program requires operators of natural and other gas transmission pipelines to identify "high consequence areas" where pipeline incidents would most severely affect public safety, such as those occurring in highly populated or frequented areas. Operators...
Gas Pipeline Safety: Views on Proposed Legislation to Reauthorize Pipeline Safety Provisions
GAO-06-1027T: Published: Aug 4, 2006. Publicly Released: Aug 4, 2006.
The Pipeline Safety Improvement Act of 2002 established a risk-based program for gas transmission pipelines--termed integrity management--which requires pipeline operators to identify areas where the consequences of a pipeline incident would be the greatest, such as highly populated areas. Operators must assess pipelines in these areas for safety threats (such as corrosion), repair or replace defe...