Featured by large scale, complex technology, and high difficulty in construction, petrochemical long distance pipeline project usually goes across rivers, highways and even folk houses, so the requirements on safety of project are increasingly obvious.

The long distance pipeline often comes under the influence of human factor,stress,corrosive medium and impurity,thus causing the pipeline to be failed,which directly affects the reliability of long distance pipeline.

In view of the main factors that bring on the failture of transmission pipeline.

According to the situation of gas pigging &pressure testing on Se-Ning-Lan transmission pipeline,the writer discussed the pipeline sectionalization method for pressure testing,the selection of pressure meters &thermometers and pigging &pressure testing procedure etc.

This article presents a mathematical model of transmission pipeline unsteady flow for hydraulic calculation of the pipeline with branches and tubes of variety of diameters and end pipeline gas storage problem.

Fault tree analysis of oil and gas pipelines with triangular fuzzy-number;

The pipeline safety situation is increasingly outstanding with long-distance oil and gas pipelines development.

Research on welding technology of stations and valve rooms of long-distance pipeline projects

The long-distance pipeline end segment storing gas system was researched in this paper as a main enterprise.

The hydraulic calculation of oil products long-distance pipeline and the calculation of relief amount when surge happens with the obtained basic data for the optimizing design of oil products long-distance pipeline are introduced briefly.

Study on the Safety ,Reliability and Risk Technology of Pipeline;

Application and research of Non-dispersible usderwater concrete used in long-distance pipeline;