scholarly journals An Integrated Approach to Risk Assessment for Special Line Shunting Via Fuzzy Theory

Symmetry ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 599 ◽  
Author(s):  
Huafeng Zhang ◽  
Quanxin Sun
Keyword(s):  
Risk Assessment ◽  
Safety Management ◽  
Fuzzy Theory ◽  
Integrated Approach ◽  
Assessment Process ◽  
Risk Levels ◽  
Fishbone Diagram ◽  
Human Management ◽  
Assessment Techniques ◽  
Risk Managers

Railway special line shunting safety is a complicated systemic topic, which is full of uncertainty and dynamic; safety is determined by numerous aspects, including human, management, environmental, and equipment factors. Many railway risk assessment techniques currently used are comparatively mature tools. However, in many circumstances, the application of these tools gives unsatisfactory results because the risk data are incomplete or involve high levels of uncertainty. Because risk assessment technology has its own applicability that it may not suitable for the three sub-processes of risk assessment, it is difficult to obtain ideal effects by using a single tool in the risk assessment process. This paper presents an integrated approach for conducting special-line shunting risk assessment, using fishbone diagram analysis, fuzzy reasoning approaches, and a fuzzy analytical hierarchy tool, which can evaluate both qualitative and quantitative risk data efficiently and effectively. The outcomes of risk assessment are represented as risk degrees and risk levels, providing railway safety risk managers and engineers with tools to improve their safety management standards. A case study is used to demonstrate the proposed methodology. The results reveal that the proposed model can effectively and efficiently assess risks associated with a special-line shunting system, yielding more reliable and realistic solutions.

Extracting Additional Risk Managers Information from a Risk Assessment of Listeria monocytogenes in Deli Meats

2007 ◽  
Vol 70 (5) ◽  
pp. 1137-1152 ◽  
Author(s):  
F. PÉREZ-RODRÍGUEZ ◽  
E. D. van ASSELT ◽  
R. M. GARCÍA-GIMENO ◽  
G. ZURERA ◽  
M. H. ZWIETERING
Keyword(s):  
Risk Assessment ◽  
Sensitivity Analysis ◽  
Listeria Monocytogenes ◽  
Safety Management ◽  
Extreme Values ◽  
Wide Distribution ◽  
Risk Levels ◽  
Uncertainty Parameters ◽  
The Right ◽  
Risk Managers

The risk assessment study of Listeria monocytogenes in ready-to-eat foods conducted by the U.S. Food and Drug Administration is an example of an extensive quantitative microbiological risk assessment that could be used by risk analysts and other scientists to obtain information and by managers and stakeholders to make decisions on food safety management. The present study was conducted to investigate how detailed sensitivity analysis can be used by assessors to extract more information on risk factors and how results can be communicated to managers and stakeholders in an understandable way. The extended sensitivity analysis revealed that the extremes at the right side of the dose distribution (at consumption, 9 to 11.5 log CFU per serving) were responsible for most of the cases of listeriosis simulated. For concentration at retail, values below the detection limit of 0.04 CFU/g and the often used limit for L. monocytogenes of 100 CFU/g (also at retail) were associated with a high number of annual cases of listeriosis (about 29 and 82%, respectively). This association can be explained by growth of L. monocytogenes at both average and extreme values of temperature and time, indicating that a wide distribution can lead to high risk levels. Another finding is the importance of the maximal population density (i.e., the maximum concentration of L. monocytogenes assumed at a certain temperature) for accurately estimating the risk of infection by opportunistic pathogens such as L. monocytogenes. According to the obtained results, mainly concentrations corresponding to the highest maximal population densities caused risk in the simulation. However, sensitivity analysis applied to the uncertainty parameters revealed that prevalence at retail was the most important source of uncertainty in the model.

Propagation and Delegation of Rights in Access Controls and Risk Assessment Techniques

2007 ◽  
pp. 328-337
Author(s):  
Saravanan Muthaiyah
Keyword(s):  
Risk Assessment ◽  
Access Control ◽  
Web Security ◽  
Quantitative Risk Assessment ◽  
New Paradigm ◽  
Risk Levels ◽  
Qualitative Risk Assessment ◽  
Access Controls ◽  
Assessment Techniques ◽  
Access Rights

Access control methods have been improvised over time, but one area that remains quite grey is the concept of assessing risk levels before any type of access rights are granted. This is relatively a new paradigm in the research of semantic Web security, and new methodologies for this effort are being studied. In this chapter, we will see how qualitative risk assessment (Nissanke & Khayat, 2004) and quantitative risk assessment are carried out. The purpose is to have different methods of assessment for better grant of access control rights and permissions. New examples based on the model described (Nissanke & Khayat, 2004) are used to illustrate the concept. A new quantities technique is also added to complement the qualitative techniques.

scholarly journals An Approach to Health and Safety Assessment in Industrial Parks

2020 ◽  
Vol 12 (9) ◽  
pp. 3646
Author(s):  
Fco. Javier García-Gómez ◽  
Cristina González-Gaya ◽  
Víctor Fco. Rosales-Prieto
Keyword(s):  
Risk Assessment ◽  
Safety Assessment ◽  
Safety Management ◽  
Health And Safety ◽  
Assessment Process ◽  
Management Systems ◽  
Fundamental Aspect ◽  
Know How ◽  
Industrial Parks ◽  
Design Construction

Safety is a fundamental aspect to take into account in the design, construction and operation of industrial parks. Therefore, it is important to know how to deal with safety in this type of facility, and how to deal with risk analysis. This document provides information related to the industrial park risk assessment process to improve the health and safety of workers in these places. A search and consultation of references related to occupational health and safety management systems is carried out, and it is found that, although there is adequate protection, both in relation to the safety of workers in industrial parks and the safety of personnel outside the facilities, it is helpful to establish a health and safety risk assessment to identify hazards and hazardous events, evaluate associated risks, and select techniques or strategies (opportunities) to manage those risks after prioritization. Following the implementation of the selected techniques, their effectiveness can then be monitored in order to avoid incidents. This document can be a model for future implementation of a health and safety management system based in ISO 45001:2018.

scholarly journals PRACTICAL ASPECTS OF RISK ACCEPTANCE CRITERIA DEVELOPMENT IN MARITIME SHIPPING / PRAKTYCZNE ASPEKTY OKREŚLANIA KRYTERIÓW AKCEPTOWALNOŚCI RYZYKA W ŻEGLUDZE MORSKIEJ

2013 ◽  
Vol 26 (1) ◽  
pp. 89-98
Author(s):  
Teresa Abramowicz-Gerigk ◽  
Zbigniew Burciu ◽  
Piotr Kaminski
Keyword(s):  
Risk Assessment ◽  
Safety Management ◽  
Assessment Methods ◽  
Management Systems ◽  
Safety Management Systems ◽  
Acceptable Risk ◽  
Acceptance Criteria ◽  
Risk Levels ◽  
Maritime Shipping ◽  
Risk Acceptance

Abstract The paper presents practical aspects of development of acceptable risk levels in maritime shipping with respect to the cooperation of parties involved in maritime safety, commonly used risk acceptance principles, criteria and uncertainties related to their development. The results of analysis of risk assessment methods used for potentially hazardous operations on board ships performed on the basis of extensive studies on the onboard safety management systems is presented. The merits and drawbacks of the approach used in the development of risk acceptance criteria in onboard safety management systems are discussed.

Human Health Safety Risk Assessment of Chinese Construction Industry

2011 ◽  
Vol 204-210 ◽  
pp. 550-553
Author(s):  
Ying Xie
Keyword(s):  
Risk Assessment ◽  
Construction Industry ◽  
Safety Management ◽  
Assessment Model ◽  
Assessment Process ◽  
Small Samples ◽  
Support Vector ◽  
Safety Risk ◽  
Health Safety ◽  
Construction Safety Management

In this paper, the characteristics of health safety risk and key issues of health safety management of construction industry in China have been analyzed first. Then, to make construction safety management and supervision available, health safety risk assessment model of construction industry is mainly converted into how to get the controlling indicator and health safety risk classification. Because of the dynamic nature of construction health safety development and the specificity of sample data, an intelligent assessment model based on support vector machines is presented to improve the assessment process. The proposed model takes advantage of SVMs abilities to solve the problem with small samples and nonlinear regression. Furthermore, the proposed approach is shown more accurate for prediction in the case of real-word application.

scholarly journals Effective Safety Management - The tale of the Engineer, Safety Manager and Accountant

2018 ◽  
Author(s):  
P J James ◽  
A Franks
Keyword(s):  
Risk Assessment ◽  
Safety Assessment ◽  
Safety Management ◽  
Integrated Approach ◽  
Building Projects ◽  
Ship Building ◽  
Naval Ship ◽  
Hazard And Risk ◽  
Hazard And Risk Assessment ◽  
Ship Safety

In several recent naval ship building projects, Lloyd’s Register has been looking at methods for integrating statutory compliance with the hazard and risk assessment mandated by some ship building contracts. The Authors have observed that standards are sometimes applied without due regard of operational context. Equally they have spent hours assessing risks for simple reliable equipment designed to rules, codes and standards. As a result, we propose in this paper, an integrated approach for assessing the whole ship safety, with a focus on the safe to operate aspects, building a comprehensive safety argument founded on an agreed standards set which is augmented with a focused safety assessment delivering value and a proportionate risk assessment.

scholarly journals Risk Assessment Using Fuzzy TOPSIS and PRAT for Sustainable Engineering Projects

2019 ◽  
Vol 11 (3) ◽  
pp. 615 ◽  
Author(s):  
G.K. Koulinas ◽  
O.E. Demesouka ◽  
P.K. Marhavilas ◽  
A.P. Vavatsikos ◽  
D.E. Koulouriotis
Keyword(s):  
Risk Assessment ◽  
Health And Safety ◽  
Real Data ◽  
Well Being ◽  
Fuzzy Topsis ◽  
Assessment Process ◽  
Sustainable Engineering ◽  
Social Sphere ◽  
Safety Risks ◽  
Risk Managers

In this study, we propose a safety risk assessment process using the fuzzy extension of the technique for order of preference by similarity to ideal solution (TOPSIS) for assigning priorities to risks in worksites, in order to promote the health, safety and well-being of workers, issues that are embedded within the concept of sustainability, specifically belonging to the social sphere of sustainability. The multicriteria method works in cooperation with a simple quantitative risk analysis and assessment process, the proportional risk assessment technique (PRAT), the functionality of which is based on real data. The efficiency of this approach is validated through treating a construction project example in Greece, and the results are compared with real fatal and non-fatal accidents data for the years 2014–2016. This integrated multicriteria approach can be used by risk managers as a tool for assessing safety risks and making informed decisions about the manner that a constraint budget would be spent in order to maximize health and safety in workplace.

The Application of Risk Assessment Techniques to Microbial Monitoring Data: A South African Perspective

1993 ◽  
Vol 27 (3-4) ◽  
pp. 145-150 ◽  
Author(s):  
N. Rodda ◽  
A. Amory ◽  
R. Kfir
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
Viral Pathogen ◽  
Microbial Risk Assessment ◽  
Microbial Risk ◽  
Risk Levels ◽  
Daily Risk ◽  
Assessment Techniques ◽  
Water Volumes ◽  
Treated Drinking Water

The feasibility of applying microbial risk assessment techniques in South Africa was evaluated by assessing risks associated with enteric viruses in raw and treated drinking water. Maximum daily risks associated with treated drinking water were in the range 2×10−2 − 7×10−1. If levels of viruses in treated drinking water were approximated from those in raw water by assuming reductions during treatmentof 4 log, Slog and 6 log, maximum daily risk estimates were 4×10−2 - 4×10−1, 5×10−3 - 1×10−1 and 5×10−4 - 1×10−2, respectively. A number of complicating factors were identified. Detection limits were high and volumes of water monitored were low. There was no information on viral pathogen removal during treatment. Application of risk assessment techniques within these limitations clearly showed the volume of water monitored to be the most important factor limiting detection of low risk levels. The sampling and concentration of large water volumes (at least 100ℓ) for microbial analysis was identified as an urgent need.

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