Results 211 to 220 of about 23,902 (268)
Some of the next articles are maybe not open access.
SIAM Journal on Scientific and Statistical Computing, 1983
We use the uniform sampling method to study shocks and spikes in transient flow in gas pipelines. The method is well suited for this purpose. Both shocks and spikes tend to be masked by the use of a conventional damping term known as Moody friction. They are also masked by standard numerical schemes.
Marchesin, D., Paes-Leme, P. J.
openaire +2 more sources
We use the uniform sampling method to study shocks and spikes in transient flow in gas pipelines. The method is well suited for this purpose. Both shocks and spikes tend to be masked by the use of a conventional damping term known as Moody friction. They are also masked by standard numerical schemes.
Marchesin, D., Paes-Leme, P. J.
openaire +2 more sources
Radioactivity in the gas pipeline network in Poland
Journal of Environmental Radioactivity, 2020<p>The radiological risk in natural gas industry is mostly connected with radon (Rn-222) and its progeny: Po-218, Pb-214, Bi-214, Po-214 and Pb-210. The radon activity concentration in natural gas transported by gas pipelines varies in a wide range from dozens of Bq/m<sup>3</sup> to several thousand Bq/
Pawel Jodlowski, Jakub Nowak, Jan Macuda
openaire +2 more sources
STATE OBSERVERS FOR MONITORING GAS PIPELINES
IEE Proceedings D Control Theory and Applications, 1983The paper describes work performed in collaboration with the British Gas Corporation, in relation to the development of algorithms for monitoring the condition of high-pressure gas pipelines. The practical problem considered is that of reconstructing the pressure profile along a single length of pipe from pressure measurements at the end points and a ...
Chapman, M. J. +2 more
openaire +2 more sources
Seismic vulnerability of natural gas pipelines
Reliability Engineering & System Safety, 2013Abstract This work deals with the analysis of the interaction of earthquakes with pipelines transporting and distributing natural gas for industrial and civil use. To this aim, a new large data-set of seismic information classified on the basis of selected seismological, geotechnical and structural parameters is presented and analyzed.
Giovanni Lanzano +3 more
openaire +4 more sources
H2 in an Exisiting Natural Gas Pipeline
Volume 1: Pipeline and Facilities Integrity, 2020Abstract N.V. Nederlandse Gasunie (Gasunie) has converted an existing gas transmission line from transporting natural gas to transporting a mixture of gaseous hydrogen and 30% to 0% methane. To enable this, an assessment was carried out on technical safety, process safety, work safety and external safety.
O. J. C. Huising, A. H. M. Krom
openaire +1 more source
Offshore Technology Conference, 1988
ABSTRACT An incident with a sour oil pipeline some 15 years ago was responsible for defining the measures necessary to give protection from hydrogen induced and sulphide stress cracking (HIC and SSCC) for pipelines in simmilar duties.
J. Leslie, J.A. King
openaire +1 more source
ABSTRACT An incident with a sour oil pipeline some 15 years ago was responsible for defining the measures necessary to give protection from hydrogen induced and sulphide stress cracking (HIC and SSCC) for pipelines in simmilar duties.
J. Leslie, J.A. King
openaire +1 more source
Pipeline Gas Reserves And Availability
All Days, 1962Buck, J. Randolph, Member AIME, Northern Natural Gas Co., Omaha, Nebr. Publication Rights Reserved Discussion of this paper is invited. Three copies of any discussion should be sent to the Society of Petroleum Engineers office.
openaire +1 more source
Optimal Design of Gas Pipeline Networks
Journal of the Operational Research Society, 1979The paper formulates the problem of designing gas pipeline collection networks in a desert environment where there are no physical obstacles, and therefore no constraints on the geometry. It is shown that such networks should be trees. An efficient method is presented for determining the optimal position of the junction points and the diameter of the ...
Bhaskaran, Sita, Salzborn, Franz J. M.
openaire +1 more source
2009
Security of the natural gas supply strongly depends on the integrity of the transportation pipelines. The statistical evidence shows that the most probable cause of the break occurrence at natural gas pipeline is the external third party interference.
openaire +2 more sources
Security of the natural gas supply strongly depends on the integrity of the transportation pipelines. The statistical evidence shows that the most probable cause of the break occurrence at natural gas pipeline is the external third party interference.
openaire +2 more sources
On-line optimization of gas pipeline networks
Automatica, 1988Abstract Compressor stations in gas transmission systems consume significant amounts of energy. Currently, operating policies for these stations in the face of varying demand are established by trial and error using simulators. The control of these systems is a challenging task due to the systems' large dimensions, their non-linearity, and the ...
Dardo Marqués, Manfred Morari
openaire +2 more sources