Methane is one of the most serious greenhouse gases contributing to irreversible climate change. The contribution of methane emissions from leaking pipelines and the expected increased throughput through the pipelines prompted the natural gas industry to set a goal of reducing emissions by 50% by 2010. The integrity of the pipelines is critical to the safety of the gas transportation infrastruc...

Pipeline transport plays a special role in the unified system of Russian Federation. Today, almost entire volume gas is delivered through main pipelines. The technology transportation natural gas, oil, condensate and their byproducts, constructive solutions linear part ground facilities influence environment. Therefore, issue compliance with environmental protection rules constructing pipeline ...

in this research an algorithm based on monte carlo simulation is introduced to assess the risk of fire following earthquake in residential, industrial, educational, and governmental land-uses in district no. 20 of tehran. the proposed algorithm consist of different modules including hazard analysis, vulnerability assessment, leak and break analysis of damaged pipeline, ignition probability anal...

Offshore pipelines used for oil and gas transportation are often buried to avoid damage from fishing activities and to provide thermal insulation. Thermal expansion and contraction of the pipeline during operation can lead to lateral or upheaval buckling. A safe buried pipeline design must take into account a reliable evaluation of soil uplift resistance and pipe embedment depth. While the cost...

The article describes numerical method of physical gas flow parameters recovery at gas trunkline and distribution pipeline networks. The information about full-scale measurements of time dependences of gas flow parameters at defined points inside pipeline networks and at its boundaries is the base for recovery implementation. Numerical simulation is carried out by defining and solving an optimi...

China’s market-oriented reform supports the sustainable development of energy mix and low-carbon target, natural gas has bridged transition from traditional fossil to clean renewable energies. The third-party access policy, launched recently by market, drives decouple between trade transport. might lead transmission resources physical network not optimally used, which is caused contractual arra...

For natural gas pipeline, it has a leak or not is critical. The most commonly problems in the pipeline leak detection methods are the difficulties to identify, inaccuracy to locate, thus, the natural gas pipeline detection is difficult to be applied, therefore, the use of neural network multi-sensor data fusion of the natural gas pipeline leak detection is particularly important. In this paper,...

This work aims to present a numerical analysis of the natural gas which flows through a high-pressure pipeline and an orifice plate, through the use of CFD methods. The paper contains CFD calculations for the flow of natural gas in a pipe with different geometry used for the orifice plates. One of them has a standard geometry and a shape without any deformation and the other is deformed by the ...

With the fast development of urban transit system and natural gas industry, the Stray Current Corrosion (SCC) for buried gas pipeline has become more frequent in china. In this study, principle and characteristic of Stray Current (SC) resulting from rail transit system were introduced. Presently available SC testing methods, equipment and determination standards in china were summarized. For an...