Semi-Quantitative Risk Assessment of Technical Systems on European Railways

2012 ◽  
pp. 54-64
Author(s):  
Jens Braband
Keyword(s):  
Risk Assessment ◽  
Risk Analysis ◽  
Quantitative Approach ◽  
Quantitative Risk Assessment ◽  
Regulatory Requirements ◽  
Analysis Methods ◽  
Technical Systems ◽  
Quantitative Approaches

The European Railway Agency (ERA) has the challenging task of establishing common safety targets and common safety methods throughout Europe. In this context, the harmonization of risk analysis methods is also discussed. The purpose of this paper is to present a new semi-quantitative approach for the risk analysis of technical systems and the means by which compliance with legal and regulatory requirements can be demonstrated. As a particular reference, a new German pre-standard, which lays out requirements for semi-quantitative approaches, is taken into account.

scholarly journals Analysis and risk assessment of risk technical systems to develop of methodology for teaching students using the method fault tree

2019 ◽  
Vol 6 ◽  
pp. 17-27
Author(s):  
Tsvetelina Simeonova
Keyword(s):  
Risk Assessment ◽  
Risk Analysis ◽  
Fault Tree ◽  
Quantitative Risk Assessment ◽  
Web Based ◽  
Qualitative And Quantitative ◽  
Student Training ◽  
Technical Systems ◽  
Risk Analysis And Management ◽  
Tree Method

The aim of the present work is to develop a methodology for conducting exercises for analysis, assessment and management of risk, using a web based tool by identifying and analyzing the risk of occurrence of a dangerous event through the fault tree method. As a result, a framework is presented according to the proposed methodology applicable to the students' training in risk analysis, evaluation and management, and according to accepted assumptions. Approaches for qualitative and quantitative risk assessment are presented at the assumed value of the damages. In addition, a methodology for risk analysis, assessment and management applicable to student training on risk analysis and management has been developed and proposed.

scholarly journals Risk Assessment in the Maritime Industry

2017 ◽  
Vol 7 (1) ◽  
pp. 1377-1381
Author(s):  
M. Mousavi ◽  
I. Ghazi ◽  
B. Omaraee
Keyword(s):  
Risk Assessment ◽  
Risk Analysis ◽  
Maritime Transportation ◽  
Assessment Practices ◽  
Maritime Industry ◽  
Regulatory Requirements ◽  
The Public ◽  
Combination Of Methods ◽  
The Right ◽  
Regulatory Trends

Risk assessment is a well-developed field which many operators are currently applying to improve their operations and reduce their risk exposure. This paper is intended to provide an overview of the risk assessment for mariners in the Maritime transportation. The risks addressed are primarily those affecting the safety of a vessel, facility or operation. The concept of risk is defined, and the methods available to assess the risks associated with an operation are described. Regulatory requirements that have prompted the development of modern risk assessment practices are described, and future regulatory trends are discussed. There are many different analysis techniques and models that have been developed to aid in conducting risk assessments. A key to any successful risk analysis is choosing the right method (or combination of methods) for the situation at hand. This is achieved through critical analysis of the available data concerning marine crises. This paper provides a brief introduction to some of the analysis methods available and suggests risk analysis approaches to support different types of decision making within the maritime transportation to cope with crises. Finally, as awareness of risk assessment increases, the benefits which can be realized through its application will continue to increase. Organizations in both the public and the private sector are becoming more and more familiar with the benefits associated with risk-based approaches to managing safety and consequently reducing crisis in maritime transportation.

Utilization of Risk Analysis Methods in Decision-Making Process on Fitness of Rehabilitation

2014 ◽  
Vol 899 ◽  
pp. 568-571 ◽  
Author(s):  
Karel Kubečka ◽  
Pavel Vlček ◽  
Darja Kubečková ◽  
Daniel Pieszka
Keyword(s):  
Risk Assessment ◽  
Decision Making ◽  
Risk Analysis ◽  
Feasibility Study ◽  
Claim Amount ◽  
Decision Making Process ◽  
Analysis Methods

The paper reflects the possibility of utilization of methods and proceedings used in risk assessment for area different from nowadays usage. Risk determination is customary for large and significant constructions within the feasibility study. Used procedures and methods can be applied very well in some cases of experts and authorized proceedings, such as setting the sequence of buildings acceptable for reconstruction of objects in defined group, or setting the coefficient for specification of claim amount arisen in the construction in the case of time-independent price.

scholarly journals Quantitative risk assessment and safety databases in Romanian coal mining: preliminary systematic approach

2022 ◽  
Vol 354 ◽  
pp. 00002
Author(s):  
Gabriel - Victor Vasilescu ◽  
Roland Iosif Moraru ◽  
Gabriel Bujor Bǎbuţ
Keyword(s):  
Risk Assessment ◽  
Risk Analysis ◽  
Coal Mining ◽  
Block Diagram ◽  
Mining Industry ◽  
Quantitative Risk Assessment ◽  
Assessment Process ◽  
Quantitative Risk Analysis ◽  
Management Actions ◽  
Process Guidance

Risk management is becoming increasingly more complex. Risk assessment, approached quantitatively, requires a factual database to define the likelihood of adverse health effects of workplace-related injuries and exposures, and it attempts to balance scientific knowledge with concerns of staff, investigators and administration. Practical guidance should be provided for Romanian coal mining companies to make progress in risk assessment process. Guidance is given on how to effectively introduce quantitative risk assessment in mining industry, the main goal being to highlight that the most valuable resource remains experience gained by effectively performing the process. Analyzing how various parameters are described/used, the paper aims to establish the place and role of quantitative risk analysis mining. Possibilities of developing safety/reliability database in coal mining are investigated. The block diagram describing the conceptual structure of a database on failures, safety of equipment and workers in the mining industry was developed. Because mining relies heavily on complex technologies - permanent mining facilities and large mobile equipment and support services - often located in isolated and hostile environments, the implementation of quantitative risk analysis and the development of a realistic database could be considered as a resilience business strategy and conversion of available knowledge into management actions.

scholarly journals Analysis and risk assessment of risk technical systems to develop of methodology for teaching students using the method dynamic fault tree

2019 ◽  
Vol 6 ◽  
pp. 115-123
Author(s):  
Tsvetelina Simeonova
Keyword(s):  
Risk Assessment ◽  
Risk Analysis ◽  
Fault Tree ◽  
Quantitative Risk Assessment ◽  
Web Based ◽  
Qualitative And Quantitative ◽  
Dynamic Fault Tree ◽  
Student Training ◽  
Risk Analysis And Management ◽  
Tree Method

The aim of the present work is to develop a methodology for conducting exercises for analysis, assessment and management of risk, using a web based tool, by identifying and analyzing the risk of occurrence of a dangerous event through the dynamic fault tree method. As a result, a framework is presented according to the proposed methodology applicable to the students' training in risk analysis, evaluation and management, and according to accepted assumptions. Approaches for qualitative and quantitative risk assessment are presented at the assumed value of the damages. In addition, a methodology for risk analysis, assessment and management applicable to student training on risk analysis and management, through the dynamic fault tree method, has been developed and proposed.  

Methods for analysis of and ways to minimize energy providers’ technology and technical risks

2017 ◽  
pp. 39-48
Author(s):  
Aleksandra Sukhova ◽  
Elena Elizareva
Keyword(s):  
Risk Assessment ◽  
Risk Analysis ◽  
Human Life ◽  
Practical Importance ◽  
Gas Pipeline ◽  
Industrial Safety ◽  
Quantitative Risk Assessment ◽  
Risk Level ◽  
Engineering System ◽  
Gland Seal

Objective: Identifying an accurate quantitative risk assessment. FEC (Fuel and Energy Complex) plants are a high-risk area as they may cause manmade disasters, various accidents, pose a threat to human life and environment. In addition, the Russian energy industry is noted for its high complexity and social responsibility. Its specific feature is that it is not always possible to make an accurate quantitative risk assessment reasonably in advance and its degree determination methods are not well enough developed. In view of the above, there are some difficulties in minimizing the risks and estimating risk management costs. There has been a recent trend in improved current legislation on industrial safety and Rostechnadzor (Federal Environmental, Industrial and Nuclear Supervision Service of Russia) oversight and supervision activity practice toward implementing a risk-based approach using the risk analysis methods. It allows optimizing the methods and frequency of inspections made by regulatory bodies depending on the risk level of facilities supervised. Methods: The (accident) risk analysis is performed as a certain scientific justification set forth using qualitative and quantitative analysis of a potential accident likelihood, consequences of its occurrence, and identification of the weakest points in the engineering system or complex. Using fault tree analysis, this article identifies hazards and assesses the high-pressure gas pipeline loss of containment risk, one of the events possible for an energy provider in operation. Results: Based on the risk analysis, there has been a proposal to replace gland seal valves with bellows seal valves noted for their optimum relationship between the unit reliability, cost and sophistication level. In case the facilities with gland seal valves remain in operation, improved production process monitoring is recommended using gas leak detectors and automatic interlocking devices. Practical importance: The measures proposed will allow minimizing the gas pipeline loss of containment risk.

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.

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