scholarly journals Analysis of Impact Zone of Quantitative Risk Assessment based on Accident Scenarios by Meteorological Factors

2017 ◽  
Vol 39 (12) ◽  
pp. 685-688 ◽  
Author(s):  
Hyun Sub Kim ◽  
Byeong Han Jeon
Keyword(s):  
Risk Assessment ◽  
Meteorological Factors ◽  
Quantitative Risk Assessment ◽  
Impact Zone ◽  
Accident Scenarios

Quantitative Risk Analysis for Natural Gas Long-Distance Pipeline Leakage

2014 ◽  
Vol 1030-1032 ◽  
pp. 661-664
Author(s):  
Zhe Zuo
Keyword(s):  
Numerical Simulation ◽  
Risk Assessment ◽  
Natural Gas ◽  
Emergency Response ◽  
Necessary Conditions ◽  
Quantitative Risk Assessment ◽  
Safe Operation ◽  
Long Distance ◽  
Main Factors ◽  
Accident Scenarios

The risk of natural gas long-distance pipeline and main factors of accidents are analyzed in this paper. According the consequences from above, quantitative risk assessment of long-distance pipelines under specific accident scenarios are completed with the help of numerical simulation model on long-distance pipeline leakage and dispersion. What’s more, on the basis of the assessment results, the necessary conditions for long-distance pipeline safe operation are presented. Finally, conclusions and safe operations under necessary conditions given in this paper are helpful for regular operation of pipeline, accident prevention, emergency response and reasonable supervision.

Semi-Quantitative Risk Assessment of Adjacent Track Accidents on Shared-Use Rail Corridors

2014 ◽  
Author(s):  
Chen-Yu Lin ◽  
Mohd Rapik Saat
Keyword(s):  
Risk Assessment ◽  
Risk Analysis ◽  
Risk Mitigation ◽  
Quantitative Risk Assessment ◽  
Accident Rate ◽  
Individual Factor ◽  
Factors Affecting ◽  
Railroad Crossings ◽  
Accident Scenarios ◽  
High Level

Safety is a high priority for any rail system, and there are several safety concerns associated with operating passenger and freight trains on shared-use rail corridors. Adjacent track accident (ATA) is one of the most important concerns. ATA refers to train accident scenarios where a derailed equipment intrudes adjacent tracks, causing operation disturbance and potential subsequent train collisions on the adjacent tracks. Other ATA scenarios include collisions between trains on adjacent tracks (raking), turnouts, and railroad crossings. Limited literature is available that addressed the risk of ATA for shared-use rail corridors. The research described in this paper presents a comprehensive risk assessment to identify factors affecting the likelihood and consequence of adjacent track accidents. A discussion on how these factors affect the probability, consequence, and how individual factor relates to each other are provided. A semi-quantitative risk analysis is developed to investigate various factors affecting train accident rate, intrusion rate, and accident consequences. This research intends to depict a high-level overview of adjacent track accidents and provides a basis for future quantitative risk analyses and risk mitigation implementations.

Quantitative Risk Assessment Method of the Domino Effect in Crude Oil Terminal Pool Fires

2014 ◽  
Vol 1030-1032 ◽  
pp. 570-573
Author(s):  
Xue Rui Xu ◽  
Lei Guan ◽  
Xing Zheng He
Keyword(s):  
Risk Assessment ◽  
Crude Oil ◽  
Assessment Method ◽  
Quantitative Risk Assessment ◽  
Pool Fires ◽  
Domino Effect ◽  
Risk Assessment Method ◽  
Accident Scenarios

The study analyzes domino accident scenarios in crude oil terminal and establishes quantitative risk assessment steps to assess domino effects.

Environmental Risk Analysis and Risk Assessment for Osbra Pipeline: A New Approach

2004 ◽  
Author(s):  
Carlos Alberto Rodrigues Torres ◽  
Regiane Tiemi Teruya Yogui ◽  
Renato Mendes ◽  
Maria Eula´lia Rocha Carneiro ◽  
Wilson Jose´ de Oliveira
Keyword(s):  
Risk Assessment ◽  
Hazard Analysis ◽  
Federal District ◽  
Diesel Oil ◽  
Quantitative Risk Assessment ◽  
Detailed Knowledge ◽  
Liquefied Petroleum Gas ◽  
Right Of Way ◽  
Accident Scenarios ◽  
Definition Of

Osbra pipeline (Oleoduto Sa˜o Paulo – Brasi´lia), about 1000 Km long, is one of the main pipelines of Petrobras Transportes S. A. - Transpetro and its function is to carry gasoline, diesel oil, aviation kerosene and liquefied petroleum gas throughout the Center-West region of Brazil. As it crosses several states of Brazil (Sa˜o Paulo, Minas Gerais and Goia´s) and Federal District (Brasi´lia), the process of renewal of the environmental license at the federal level required a series of environmental studies. Accordingly, a new study is being performed, considering, in addition to the already consecrated Quantitative Risk Assessment, a new methodology for recognition and analysis of the vulnerable environmental elements along the pipeline right-of-way in what concerns oil spill. This study intends to present the aforementioned methodology according to the following topics: Characterization of the undertaking and of the surrounding region; identification of the notable points; identification of the sensitive environmental elements in the hydrographic basins; Preliminary Hazard Analysis; definition of accident scenarios; dimension of possible leaks along the pipeline right-of-way and their consequences (physical effects); calculation of frequencies; calculation and evaluation of risks (social and individual); classification of environmental sensitivity; contingency actions analysis and conclusions. Development of this work brings as a result a more detailed knowledge of the consequences of an occasional accident arising from pipeline related activities, to the end of preventing and protecting the vulnerable elements (man and environment) along the pipeline right-of-way.

A semi-quantitative risk assessment model for the outbreak of grass carp hemorrhage

2013 ◽  
Vol 19 (3) ◽  
pp. 521-527 ◽  
Author(s):  
Song YANG ◽  
Shuqin WU ◽  
Ningqiu LI ◽  
Cunbin SHI ◽  
Guocheng DENG ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Grass Carp ◽  
Assessment Model ◽  
Quantitative Risk Assessment ◽  
Risk Assessment Model

Risk assessment of Campylobacter species in shellfish: identifying the unknown

1997 ◽  
Vol 35 (11-12) ◽  
pp. 29-34 ◽  
Author(s):  
P. Teunis ◽  
A. Havelaar ◽  
J. Vliegenthart ◽  
G. Roessink
Keyword(s):  
Risk Assessment ◽  
Quantitative Risk Assessment ◽  
Contamination Level ◽  
Risk Of Infection ◽  
Worst Case ◽  
Considerable Uncertainty ◽  
Risk Estimates ◽  
Consumption Data ◽  
Campylobacter Infection ◽  
Campylobacter Spp

Shellfish are frequently contaminated by Campylobacter spp, presumably originating from faeces from gulls feeding in the growing or relaying waters. The possible health effects of eating contaminated shellfish were estimated by quantitative risk assessment. A paucity of data was encountered necessitating many assumptions to complete the risk estimate. The level of Campylobacter spp in shellfish meat was calculated on the basis of a five-tube, single dilution MPN and was strongly season-dependent. The contamination level of mussels (<1/g) appeared to be higher than in oysters. The usual steaming process of mussels was found to completely inactivate Campylobacter spp so that risks are restricted to raw/undercooked shellfish. Consumption data were estimated on the basis of the usual size of a portion of raw shellfish and the weight of meat/individual animal. Using these data, season-dependent dose-distributions could be estimated. The dominant species in Dutch shellfish is C. lari but little is known on its infectivity for man. As a worst case assumption, it was assumed that the infectivity was similar to C. jejuni. A published dose-response model for Campylobacter-infection of volunteers is available but with considerable uncertainty in the low dose region. Using Monte Carlo simulation, risk estimates were constructed. The consumption of a single portion of raw shellfish resulted in a risk of infection of 5–20% for mussels (depending on season; 95% CI 0.01–60%). Repeated (e.g. monthly) exposures throughout a year resulted in an infection risk of 60% (95% CI 7–99%). Risks for oysters were slightly lower than for mussels. It can be concluded that, under the assumptions made, the risk of infection with Campylobacter spp by eating of raw shellfish is substantial. Quantitative risk estimates are highly demanding for the availability and quality of experimental data, and many research needs were identified.

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