Attribution of Human VTEC O157 Infection from Meat Products: A Quantitative Risk Assessment Approach

A quantitative risk assessment model investigating the risk of human infection with campylobacter from the consumption of chicken meat/products is currently being formulated. Here such an approach is used to evaluate the probability that a random bird, selected at slaughter from Great Britain's national poultry flock, will be campylobacter-positive. This is determined from the probability that a flock chosen at random contains at least one colonized bird and the within-flock prevalence of such a flock at slaughter. The model indicates that the probability bird chosen at random being campylobacter-positive at slaughter is 0·53. This probability value has associated uncertainty, the 5th percentile being 0·51 and the 95th percentile 0·55. The model predicts that delaying the age at first exposure to campylobacter can have a significant impact on reducing the probability of a bird being campylobacter-positive at slaughter. However, implementation of current biosecurity methods makes this difficult to achieve.

Download Full-text

A Quantitative Risk Assessment Approach Based on Safety Performance

2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE) ◽

10.1109/qr2mse46217.2019.9021247 ◽

2019 ◽

Author(s):

Ming-Liang Chen ◽

Yuan Zhang ◽

Yan-Qiu Chen

Keyword(s):

Risk Assessment ◽

Safety Performance ◽

Quantitative Risk Assessment ◽

Assessment Approach

Download Full-text

Major Advancement in Pipeline Integrity Management Through an Integrated Quantitative Risk Assessment Approach

10.4043/27065-ms ◽

2016 ◽

Author(s):

A. Azouz ◽

M. Abdel Hakim ◽

Y. Soliman ◽

H. Awda

Keyword(s):

Risk Assessment ◽

Quantitative Risk Assessment ◽

Assessment Approach ◽

Integrity Management

Download Full-text

Domain-specific risk assessment using integrated simulation: A case study of an onshore wind project

Canadian Journal of Civil Engineering ◽

10.1139/cjce-2021-0099 ◽

2021 ◽

Author(s):

Emad Mohamed ◽

Nima Gerami Seresht ◽

Stephen Hague ◽

Adam Chehouri ◽

Simaan M. AbouRizk

Keyword(s):

Risk Assessment ◽

Wind Farm ◽

Critical Path ◽

Quantitative Risk Assessment ◽

Integrated Simulation ◽

Domain Specific ◽

Risk Assessment Models ◽

First Case ◽

Assessment Approach

Although many quantitative risk assessment models have been proposed in literature, their use in construction practice remain limited due to a lack of domain-specific models, tools, and application examples. This is especially true in wind farm construction, where the state-of-the-art integrated Monte Carlo simulation and critical path method (MCS-CPM) risk assessment approach has yet to be demonstrated. The present case study is the first reported application of the MCS-CPM method for risk assessment in wind farm construction and is the first case study to consider correlations between cost and schedule impacts of risk factors using copulas. MCS-CPM provided reasonable risk assessment results for a wind farm project, and its use in practice is recommended. Aimed at facilitating the practical application of quantitative risk assessment methods, this case study provides a much-needed analytical generalization of MCS-CPM, offering application examples, discussion of expected results, and recommendations to wind farm construction practitioners.

Download Full-text

Semi-Quantitative Risk Assessment Matrix for Rotating Equipment

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.845.647 ◽

2013 ◽

Vol 845 ◽

pp. 647-651

Author(s):

Mohd Amin bin Abd Majid ◽

Rano Khan Wassan ◽

Ainul Akmar Mokhtar

Keyword(s):

Risk Assessment ◽

Failure Modes ◽

Oil And Gas ◽

Guide Vane ◽

Quantitative Risk Assessment ◽

Inlet Guide Vane ◽

Risk Matrix ◽

Assessment Approach ◽

Rotating Equipment ◽

Blade Failure

In petrochemical, power generation, oil and gas industries and in variety of other sectors rotating equipments are in use to fulfill production requirements. Failure of rotating equipment, especially in such industries can result to risk related issues. A well implemented rotating equipment risk assessment strategy is most needed to achieve desired plant availability and efficiency. In this research semi-quantitative risk assessment approach is proposed to evaluate the risk of rotating equipment and categorize their associated failure risks. Borda ranking is adopted to evaluate the risk in order to minimize risk ties which exist in risk matrix. Compressor is taken as case study to show the applicability of the proposed method for rotating equipment. It was observed that risks of selected failure modes of gas turbine compressor fall in the categories of serious and medium levels based on risk matrix. Rotor bend distortion, blade failure or inlet guide vane failures needed more attention for treatment based on Borda ranking.

Download Full-text

Quantitative risk assessment of Listeria monocytogenes in ready-to-eat (RTE) cooked meat products sliced at retail stores in Greece

Food Microbiology ◽

10.1016/j.fm.2021.103800 ◽

2021 ◽

Vol 99 ◽

pp. 103800

Author(s):

Sofia Tsaloumi ◽

Zafiro Aspridou ◽

Eirini Tsigarida ◽

Fragiskos Gaitis ◽

Gorgias Garofalakis ◽

...

Keyword(s):

Risk Assessment ◽

Listeria Monocytogenes ◽

Meat Products ◽

Quantitative Risk Assessment ◽

Retail Stores ◽

Cooked Meat ◽

Cooked Meat Products

Download Full-text

A risk assessment of Pseudomonas aeruginosa in swimming pools: a review

Journal of Water and Health ◽

10.2166/wh.2012.020 ◽

2012 ◽

Vol 10 (2) ◽

pp. 181-196 ◽

Cited By ~ 22

Author(s):

Scott A. Rice ◽

Ben van den Akker ◽

Francesco Pomati ◽

David Roser

Keyword(s):

Risk Assessment ◽

Pseudomonas Aeruginosa ◽

Management Strategies ◽

Opportunistic Pathogen ◽

Quantitative Risk Assessment ◽

Swimming Pools ◽

Critical Knowledge ◽

Risk Management Strategies ◽

Assessment Approach ◽

Significant Public Health

Despite routine monitoring and disinfection, treated swimming pools are frequently contaminated with the opportunistic pathogen Pseudomonas aeruginosa, which can represent a significant public health threat. This review was undertaken to identify the current understanding of risk factors associated with pool operation with respect to P. aeruginosa. The ecology and factors that promote growth of P. aeruginosa in the pool environment are complex and dynamic and so we applied a systematic risk assessment approach to integrate existing data, with the aim to improve pool management and safety. Sources of P. aeruginosa, types of infections, dose responses, routes of transmission, as well as the efficacy of current disinfectant treatments were reviewed. This review also highlights the critical knowledge gaps that are required for a more robust, quantitative risk assessment of P. aeruginosa. Quantitative risk management strategies have been successfully applied to drinking water systems and should similarly be amenable to developing a better understanding of the risk posed by P. aeruginosa in swimming pools.

Download Full-text