Nathan Phillips, Boston University
Image showing relative volume of methane leaks at various locations around Boston.
The new study comes in the wake of devastating fires fueled by natural gas during Hurricane Sandy. Potential damage to gas pipeline pressure regulators, caused by flooding in Hurricane Sandy, has raised ongoing safety concerns in New York and New Jersey.
The researchers report finding 3,356 separate natural gas leaks under the streets of Boston. “While our study was not intended to assess explosion risks, we came across six locations in Boston where gas concentrations exceeded the threshold above which explosions can occur,” said Nathan Phillips, associate professor in BU’s Department of Earth and Environment and co-author of the study.
Nationally, natural gas pipeline failures cause an average of 17 fatalities, 68 injuries, and $133M in property damage annually, according to the U.S. Pipeline and Hazardous Materials Safety Administration. In addition to the explosion hazard, natural gas also poses a major environmental threat: Methane, the primary ingredient of natural gas, is a powerful greenhouse gas that degrades air quality. Leaks in the United States contribute to $3 billion of lost and unaccounted for natural gas each year.
“Repairing these leaks will improve air quality, increase consumer health and safety, and save money,” said co-author Robert B. Jackson, Nicholas Professor of Global Environmental Change at Duke. “We just have to put the right financial incentives into place.”
Phillips and Jackson’s teams collaborated with industry partners Robert Ackley of Gas Safety, Inc., and Eric Crosson of Picarro, Inc., on the study. They mapped the gas leaks under Boston using a new, high-precision methane analyzer installed in a GPS-equipped car. Driving all 785 road miles within city limits, the researchers discovered 3,356 leaks.
The leaks were distributed evenly across neighborhoods and were associated with old cast-iron underground pipes, rather than neighborhood socioeconomic indicators. Levels of methane in the surface air on Boston’s streets exceeded fifteen times the normal atmospheric background value.
Like Boston, other cities with aging pipeline infrastructure may be prone to leaks. The researchers recommend coordinated gas-leaks mapping campaigns in cities where the infrastructure is deemed to be at risk. The researchers will continue to quantify the health, safety, environmental, and economic impacts of the leaks, which will be made available to policymakers and utilities as they work to replace and repair leaking natural gas pipeline infrastructure.
Lucy Hutyra, Assistant Professor and Max Brondfield, technician, worked with Phillips on this study at Boston University. At Duke, PhD student Adrian Down, postdoctoral researcher Kaiguang Zhao, and research scientist Jon Karr assisted Jackson with his research.
The study was supported by the Barr Foundation, Conservation Law Foundation, National Science Foundation, Picarro, Inc., Boston University and Duke University.
About Boston University
Founded in 1839, Boston University is an internationally recognized private research university with more than 30,000 students participating in undergraduate, graduate, and professional programs. As Boston University’s largest academic division, the College and Graduate School of Arts & Sciences is the heart of the BU experience with a global reach that enhances the University’s reputation for teaching and research.Link to article:
Sara Rimer | Newswise Science News
Modeling magma to find copper
13.01.2017 | Université de Genève
What makes erionite carcinogenic?
13.01.2017 | Friedrich-Schiller-Universität Jena
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...
Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.
The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...
UMD, NOAA collaboration demonstrates suitability of in-orbit datasets for weather satellite calibration
"Traffic and weather, together on the hour!" blasts your local radio station, while your smartphone knows the weather halfway across the world. A network of...
Fiber-reinforced plastics (FRP) are frequently used in the aeronautic and automobile industry. However, the repair of workpieces made of these composite materials is often less profitable than exchanging the part. In order to increase the lifetime of FRP parts and to make them more eco-efficient, the Laser Zentrum Hannover e.V. (LZH) and the Apodius GmbH want to combine a new measuring device for fiber layer orientation with an innovative laser-based repair process.
Defects in FRP pieces may be production or operation-related. Whether or not repair is cost-effective depends on the geometry of the defective area, the tools...
10.01.2017 | Event News
09.01.2017 | Event News
05.01.2017 | Event News
16.01.2017 | Power and Electrical Engineering
16.01.2017 | Information Technology
16.01.2017 | Power and Electrical Engineering