Oil and gas transmission pipelines are critical items of infrastructure in providing energy sources to regions and countries. Steel pipes are commonly used which can be subject to both internal and external corrosion. This paper presents an advanced nondestructive inspection technique for detection of oil-gas pipeline corrosion defect. The Pulsed Eddy Current (PEC) method has been successfully ...

An X70 natural gas pipeline steel that is being considered for blended gas/hydrogen service was evaluated in a high-pressure hydrogen environment. Fracture toughness testing and fatigue crack growth rate were conducted according to ASTM standards the results are presented context of ASME B31.12 qualification. While reduction fracture observed, behavior within acceptable bounds service.

A natural gas pipeline system (NGPS), as a crucial energy transportation network, exhibits intricate systemic characteristics. Both uncertain disturbances and complex characteristics result in higher requirement of supply safety. The investigation into NGPS resilience addresses the constraints integrity reliability, centering around vulnerability, robustness, recovery an NGPS. Based on literatu...

In this paper, an Ant Colony Optimization Algorithm (ACO) is proposed for operations of steady flow gas pipeline. The system is composed of compressing stations linked by pipe legs. The decisions variables are chosen to be the operating turbo compressor number and the discharge pressure for each compressing station. The objective function is the power consumed in the system by these stations. U...

Dairy biogas can be combusted to generate electricity and/or heat. This report, however, focuses on alternate uses of biogas including the upgrading of biogas to biomethane, a product equivalent to natural gas or other higher-grade fuels. Biomethane, which typically contains more than 95% CH (with the remainder as CO 4 2), has no technical barrier to being used interchangeably with natural gas,...

The modern electric power grid is a complex interconnected network of independent physical and electronic devices that utilize myriad technologies for communication between other devices and with centralized control centers. These technologies may be compromised by malicious parties which may, in turn, lead to degraded performance or a failure of the communications infrastructure, ultimately re...