COMPUTATION TECHNOLOGY FOR SAFETY AND RISK ASSESSMENT OF GAS PIPELINE SYSTEMS

摘要

Computation technology for investigating failures at gas pipelines is presented. The technology is based on the principle of simultaneous creating and numerical analyzing high accuracy mathematical models those describing failures at the gas pipelines from failure initiation up to localizing its consequences. High accuracy modeling is achieved due to minimizing simplifications assumed in the mathematical models and implementing up-to-date mesh methods for nonlinear numerical analysis and hybrid methods for mathematical optimization. The computation technology allows to execute multi-objective risk assessment for operating pipelines.