QRA-Grid: Quantitative Risk Analysis and Grid-based Pre-warning Model for Urban Natural Gas Pipeline

Comparison study on qualitative and quantitative risk assessment methods for urban natural gas pipeline network.

In this paper, a qualitative and a quantitative risk assessment methods for urban natural gas pipeline network are proposed. The qualitative method is comprised of an index system, which includes a causation index, an inherent risk index, a consequence index and their corresponding weights. The quantitative method consists of a probability assessment, a consequences analysis and a risk evaluati...

Risk-shifting, and Natural Gas Pipeline Regulation

QRA model-based risk impact analysis of traffic flow in urban road tunnels.

Road tunnels are vital infrastructures providing underground vehicular passageways for commuters and motorists. Various quantitative risk assessment (QRA) models have recently been developed and employed to evaluate the safety levels of road tunnels in terms of societal risk (as measured by the F/N curve). For a particular road tunnel, traffic volume and proportion of heavy goods vehicles (HGVs...

Grid-based Environmental Risk Analysis System

A computer-supported system for analyzing and managing pollutant-related environmental risks is being developed in the ERAMAS (Environmental Risk Analysis and Management System) project. The objective is to use sophisticated simulation programs to forecast and evaluate the dispersion of carcinogenic and chemically toxic substances in the atmosphere, the soil and the groundwater and to calculate...

Algorithm analysis for the pipeline computing in Grid GIS

Grid GIS is a new technology which integrates the Grid with GIS. The analysis and application of geospatial information based on WebGIS now has new contents and application approaches based on Grid GIS, so the assignment and realization of computation tasks are more complex. The algorithm Com-Pool which is applied in Grid GIS can realize the task scheduling for its simple and practical characte...