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.

Problems and Perspectives in Seismic Quantitative Risk Analysis of Chemical Process Plants

2018 ◽  
Vol 141 (1) ◽  
Author(s):  
Antonio C. Caputo ◽  
Fabrizio Paolacci ◽  
Oreste S. Bursi ◽  
Renato Giannini
Keyword(s):  
Risk Assessment ◽  
Risk Analysis ◽  
Critical Review ◽  
Chemical Process ◽  
Quantitative Risk Assessment ◽  
Modeling Tools ◽  
Quantitative Risk Analysis ◽  
Industrial Sites ◽  
The Past ◽  
Process Plants

Earthquakes represent a class of natural-technical (NaTech) hazards which in the past have been responsible of major accidents and significant losses in many industrial sites. However, while codes and standards are issued to design specific structures and equipment in both the civil and industrial domain, established procedures for seismic quantitative risk assessment (QRA) of process plants are not yet available. In this paper, a critical review of seismic QRA methods applicable to process plants is carried out. Their limitations are highlighted and areas where further research is needed are identified. This will allow to refine modeling tools in order to increase the capabilities of risk analysis in process plants subjected to earthquakes.

Comparison of Human Health and Safety Loss due to Corroded Gas Pipeline Failure in Rural and Urban Areas: A Case Study in Malaysia

2015 ◽  
Vol 227 ◽  
pp. 221-224 ◽  
Author(s):  
Norhamimi Mohd Hanafiah ◽  
Libriati Zardasti ◽  
Yahaya Nordin ◽  
Norhazilan Md Noor ◽  
Ahmad A. Safuan
Keyword(s):  
Risk Assessment ◽  
Human Health ◽  
Urban Areas ◽  
Health And Safety ◽  
Quantitative Risk Assessment ◽  
Assessment Process ◽  
Rural And Urban Areas ◽  
Consequence Assessment ◽  
Rural And Urban ◽  
Pipeline Failure

Consequence assessment is an integral part of the risk assessment process. There are many types of consequences loss due to pipeline failure such as asset loss, environmental loss, production loss, and human health and safety loss (HHSL). This paper studies the comparison of HHSL between rural and urban areas due to pipeline failure subject to corrosion. The damage area of the explosion was calculated using Aloha software by considering the details of the selected sites such as atmospheric and topographical conditions. The HHSL was calculated using a mathematical equation of quantitative risk assessment in terms of the number of fatalities or injuries or both. The results of the assessments from rural and urban areas were then compared with one another to identify any significant dissimilarity. This study shows that there was a possibility to improve the decisive value of risk by implementing the proposed approach in consequence assessment in Malaysia.

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 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.

scholarly journals The application of qualitative risk assessment methodology to prioritize issues for fisheries management

2005 ◽  
Vol 62 (8) ◽  
pp. 1576-1587 ◽  
Author(s):  
W.J. Fletcher
Keyword(s):  
Risk Assessment ◽  
Fisheries Management ◽  
Stakeholder Involvement ◽  
Assessment Process ◽  
Risk Scores ◽  
Management Actions ◽  
Qualitative Risk Assessment ◽  
Ecologically Sustainable ◽  
Ecosystem Based Fisheries Management ◽  
Risk Assessment Methodology

Abstract Implementing more holistic forms of fisheries management (e.g. Ecologically Sustainable Development (ESD), Ecosystem-Based Fisheries Management) usually increases the number and scope of impacts requiring assessment. This study examined the effectiveness of a qualitative risk assessment process, developed as part of a National ESD framework, for prioritizing issues across the seven most valuable Western Australian commercial fisheries. Structured stakeholder workshops were used to identify issues across three ecological areas: retained species (i.e. target and by-product), non-retained (i.e. discarded and protected) species, and the broader ecosystem for each fishery. The risk associated with each issue was assessed using one of five sets of consequence criteria specifically developed to cover fishery-related impacts. The risk scores, for which suitably detailed justifications were written, determined the level of reporting and management required for each issue. Despite an additional 96 “non-target species issues” being identified at the workshops from a total of 115 issues, of the 27 issues requiring explicit management actions, just six new issues were added by this process. In addition, it identified where modifications of some of the existing arrangements were necessary. Finally, the system significantly improved stakeholder involvement and therefore acceptance of the outcomes. Given this success, risk assessment has now been applied to all Western Australia's export fisheries and to the development or review of many other systems, thereby improving the entire management process.

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.

scholarly journals Using EWGM method to optimise the FMEA as a risk assessment methodology

2019 ◽  
Vol 27 (2) ◽  
pp. 144-154 ◽  
Author(s):  
Sahar AL Mashaqbeh ◽  
Jose Eduardo Munive-Hernandez ◽  
Mohammed Khurshid Khan
Keyword(s):  
Risk Factors ◽  
Risk Assessment ◽  
Risk Analysis ◽  
Systematic Approach ◽  
Failure Modes ◽  
Assessment Tool ◽  
Geometric Mean ◽  
Assessment Process ◽  
Risk Ranking

Failure modes and effect analysis (FMEA) is a proactive, highly structured and systematic approach for failure analysis. It has been also applied as a risk assessment tool, by ranking potential risks based on the estimation of risk priority numbers (RPNs). This article develops an improved FMEA methodology for strategic risk analysis. The proposed approach combines the analytic hierarchy process (AHP) technique with the exponential and weighted geometric mean method (EWGM) to support risk analysis. AHP is applied to estimate the weights of three risk factors: Severity (S), Occurrence (O) and Detection (D), which integrate the RPN for each risk. The EWGM method is applied for ranking RPNs. Combining AHP with EWGM allows avoiding repetition of FMEA results. The results of the developed methodology reveal that duplication of RPNs has been decreased, facilitating an effective risk ranking by offering a unique value for each risk. The proposed methodology not only focuses on high severity values for risk ranking but it also considers other risk factors (O and D), resulting in an enhanced risk assessment process. Furthermore, the weights of the three risk factors are considered. In this way, the developed methodology offers unique value for each risk in a simple way which makes the risk assessment results more accurate. This methodology provides a practical and systematic approach to support decision makers in assessing and ranking risks that could affect long-term strategy implementation. The methodology was validated through the case study of a power plant in the Middle East, assessing 84 risks within 9 risk categories. The case study revealed that top management should pay more attention to key risks associated with electricity price, gas emissions, lost-time injuries, bad odour and production.

Risk Analysis of Hydropower Construction Project Based on Fuzzy Comprehensive Evaluation

2013 ◽  
Vol 357-360 ◽  
pp. 2177-2181 ◽  
Author(s):  
Yun Na Wu ◽  
Zi Shan Hu ◽  
Ru Hang Xu
Keyword(s):  
Risk Factors ◽  
Risk Assessment ◽  
Risk Analysis ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Quantitative Risk Assessment ◽  
Vector System ◽  
Hydropower Project ◽  
Project Risk ◽  
Hydropower Construction

Hydropower construction projects have been faced with more complex risk factors and had higher demands on technology in recent years. It is how to do the risk assessment and management that have been the focus of hydropower project management. In the basis of the analysis of risk factors of hydropower projects, this article has adopted analytic hierarchy to construct the hydropower project risk evaluation index system, and presented 9-scale method in accordance with human experience and judgment to make quantitative risk assessment of the risk factors by weight vector system. With the construction of the risk fuzzy evaluation model and the analysis by examples, it is proved that the fuzzy comprehensive evaluation method has the applicability for hydropower project risk analysis, which combined qualitative analysis and quantitative analysis to strengthen the regulation and evaluation effectiveness.

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