Abstract Pressure pipelines use pressure to transport gas, liquefied and steam in the process of use. If there are defects pipeline, it is easy leak or burst, even cause secondary accidents. To ensure safety, necessary inspect regularly. However, difficult for pipeline empty internal medium. Therefore, great significance industrial under operating conditions. In this paper, X-ray testing experi...

safety and failure in gas pipelines are very important in gas and petroleum industry. for this reason, it is important to study the effect of different parameters in order to reach the maximum safety in design and application. in this paper, a three dimensional finite element analysis is carried out to study the effect of crack length, crack depth, crack position, internal pressure and pipe thi...

In this paper we present a practical framework that can support the decision on test methods and test intervals for safety critical valves in situations where limited relevant historical data is available. The framework is based upon a systematic review of the valve functions and associated failure modes, as well as properties of the environment that the valve is located in, and evaluation of t...

The approval by FERC of a regulated natural gas pipeline’s market-based rate application depends upon the availability of substitute pipelines with sufficient capacity to maintain the current transport price. But how much alternate capacity is enough? Clearly, the price will not increase when alternate pipelines have unsubscribed capacity equal to the capacity of the applicant pipeline, since t...

In 1992, the U.S. Federal Energy Regulatory Commission created a secondary market for natural gas transportation whereby shippers holding firm transportation capacity on interstate natural gas pipelines can compete with the pipeline in the provision of transportation services. However, if a shipper does not use some of its contracted firm transportation capacity, the pipeline can resell that ca...

Buried pipeline systems are commonly used to transport water, sewage, oil, natural gas and other materials. In the conterminous United States, there are about 77,109 km (47,924 miles) of crude oil pipelines, 85,461 km (53,114 miles) of refined oil pipelines and 67,898 km (42,199 miles) of natural gas pipelines (FEMA, 1991). The total length of water and sewage pipelines is not readily available...

The pipeline pressure of blast furnace gas (BFG) system in steel industry provides effective information for the energy scheduling operations. However, due to the complexity of the byproduct gas pipeline network and the large fluctuations of the gas flow, it is rather difficult to establish an accurate prediction model for the pipeline pressure. Additionally, the quantitative reliability of the...

Flow against Xingjian’s oil and gas pipeline leakage and the pipe network sudden burst pipe to pipeline leakage flow for the application objects, Optimal pacing scheme is designed in pipeline leak monitoring. Based on the property of Markov chain for network data, a new estimator with particle filter is proposed for congestion control in this paper. In the context of a reconfigurable transport ...

It is economical and efficient to use existing natural gas pipelines transport hydrogen. The fast accurate prediction of mixing uniformity hydrogen injection in important for the safety pipeline transportation downstream end users. In this study, computational fluid dynamics (CFD) method was used investigate process a T-junction pipeline. coefficient variation (COV) concentration on cross secti...