Results 241 to 250 of about 2,302,430 (290)

RISK MANAGEMENT IN OIL PIPELINES AND GAS PIPELINES

International Oil Spill Conference Proceedings, 1995
ABSTRACT Several methods have been developed by Dutos e Terminais do Centro-Oeste e São Paulo, a subdivision of Petrobrás's Transportation Department, to guarantee the mitigation of identified risks in pipeline installations, using a managerial approach rather than the traditional technical approach.
Luiz de Lima Buzelin, Anibal José Constantino Alves   +1 more
openaire   +1 more source

On-line optimization of gas pipeline networks

Automatica, 1988
Abstract 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   +3 more sources

Access to Pipelines in Competitive Gas Markets

Journal of Regulatory Economics, 2003
In this paper we provide the normative benchmark characterizing the optimal allocation of resources in a gas network. By duality, we determine the consumer and producer prices, at each node of the network, which decentralize this allocation with competitive actors.
Cremer, Helmuth, Gasmi, Farid, Laffont, Jean-Jacques   +2 more
openaire   +3 more sources

Leak monitoring system for gas pipelines

IEEE International Conference on Acoustics Speech and Signal Processing, 1993
An approach and a solution to the continuous leak monitoring problem in underground gas pipelines are presented. This approach places permanent monitoring units along the pipeline. These units detect acoustic signals in the pipeline and discriminate leak sounds from other man-made or natural nonleak sounds that can occur.
Igal Brodetsky, Michael I. Savic
openaire   +2 more sources

DESULPHURIZATION OF GAS AND CORROSION CONTROL IN PIPELINES

Proceedings of Middle East Technical Conference and Exhibition, 1981
ABSTRACT The need to develop a national source of energy linked with gas contracts specifications, environmental and corrosion problems have brought SNEA to develop its own gas desulphurization process. This had lead to a big sulphur production and a new source of revenues, as well as licence selling.
Eugène Leventis, Louis Grulet
openaire   +1 more source

Optimal Design of Gas Pipeline Networks

Journal of the Operational Research Society, 1979
The 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

Modeling the dynamics of flow in gas pipelines

IEEE Transactions on Systems, Man, and Cybernetics, 1984
The description of nonstationary one-dimensional flow of a nonideal gas in a pipe is treated with the goal of developing a mathematical description of flow and pressure (density) dynamics adequate for creating a simulation model of large pipeline networks, the analysis starts from Newton's equation of motion.
Jaroslav Kralik, Petr Stiegler, Zdenek Vostrý, Jirí Zavorka   +3 more
openaire   +1 more source

Transients in Gas-Condensate Natural Gas Pipelines

Journal of Energy Resources Technology, 1998
Liquid condensation in natural gas transmission pipelines commonly occurs due to the thermodynamic and hydrodynamic imperatives. Condensation subjects the gas pipeline to two-phase transport. Neither the point along the pipeline at which the condensate is formed nor the quantity formed is known a priori.
J. Zhou, M. A. Adewumi
openaire   +1 more source

Flow Equations for Natural Gas Pipelines

Transactions of the American Society of Civil Engineers, 1958
In use of various equations in pipe line design, practice is to apply Pipeline Efficiency factor; three equations most widely used for design are given; use of equations in operation study and capacity testing; difference between flow equation; determining behavior of resistance coefficient.
openaire   +1 more source

Management of Pipeline Dents and Mechanical Damage in Gas Pipelines

Volume 2: Integrity Management; Poster Session; Student Paper Competition, 2006
This paper describes an approach used by Duke Energy Gas Transmission (DEGT) to manage dents and mechanical damage as part of its overall Integrity Management Plan (IMP). The approach provides guidance in the process for evaluating deformation anomalies that are detected by high resolution magnetic flux leakage (HR-MFL) and multi-channel geometry in ...
David J. Warman, Dennis Johnston, John D. Mackenzie, Steve Rapp, Bob Travers   +4 more
openaire   +1 more source