The paper presents the study of the radioactivity connected with the transport of natural gas by the gas pipeline network in the selected points in Poland. In the scope of the study the measurements of activity concentration of radon (Rn) in the gas samples, radiolead (Pb) in spent filter cartridges and dust samples (black powder) collected from the gas pipeline network were performed. The results show that the Rn activity concentration in natural gas varies from the detection limit of the applied method (30 Bq/m) to around 1400 Bq/m. The Pb activity concentration in black powder samples and spent filter cartridges varies from 500 to 17000 Bq/kg and from 200 to 2900 Bq/kg respectively. The black powder with highest Pb concentration should be classified as low-radioactive waste according to nuclear regulations.
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http://dx.doi.org/10.1016/j.jenvrad.2019.106143 | DOI Listing |
Sci Rep
January 2025
Northwest Sichuan Gas District of Southwest Oil and Gasfield Company, Jiangyou, 621700, China.
With the wide application of hydrogen-doped natural gas (HBNG) in end users, laying pipelines in urban, comprehensive pipe corridors has become increasingly common. However, the leakage and diffusion of hydrogen-doped natural gas in confined or semi-confined spaces (e.g.
View Article and Find Full Text PDFEnviron Sci Technol Lett
January 2025
Energy Emissions Modeling and Data Lab (EEMDL), The University of Texas at Austin, Austin Texas 78712, United States.
Addressing methane emissions across the liquefied natural gas (LNG) supply chain is key to reducing climate impacts of LNG. Actions to address methane emissions have emphasized the importance of the use of measurement-informed emissions inventories given the systematic underestimation in official greenhouse gas (GHG) emission inventories. Despite significant progress in field measurements of GHG emissions across the natural gas supply chain, no detailed measurements at US liquefaction terminals are publicly available.
View Article and Find Full Text PDFACS Omega
January 2025
College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, Liaoning, China.
To minimize the number of casualties due to poisoning in coal mine gas explosions, the migration characteristics of harmful hot gas groups in the mine ventilation system following an explosion were analyzed. Through pipeline experiments, initial CO concentrations and residual temperatures after gas explosions were determined and used as key simulation parameters. Simulations were performed using the TF1M(3D) software based on the case of the gas explosion at the Tunlan Mine.
View Article and Find Full Text PDFACS ES T Water
January 2025
School of Earth and Environmental Sciences, Queens College, City University of New York, Queens, New York 11367, United States.
Scaling minerals, such as barite, can cause detrimental consequences for oil/gas pipelines and water systems, but their formation can be inhibited by organic chelators such as ethylenediaminetetraacetic acid (EDTA). Here, we resolve how EDTA affects sorption and desorption of Pb at the barite (001) surface using a combination of X-ray scattering and microscopy measurements. In the presence of EDTA, Pb incorporated in the topmost part of the barite surface and adsorbed as inner-sphere complexes on the surface.
View Article and Find Full Text PDFThe marginal wells in low-permeability oil fields are characterized by small storage size, scattered distribution, intermittent production, etc. The construction of large-scale gathering pipelines has large investment. So the current production mode is featured by single well tank oil storage, oil tank truck transportation and manual tank truck scheduling.
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