scholarly journals An integrated safety implementation analysis based on risk assessment to enhance the safety engineering practice in the gas fields of Sylhet region, Bangladesh

2021 ◽  
Vol 5 (2) ◽  
pp. 197-206
Author(s):  
Md Enamul Haque ◽  
M Farhad Howladar ◽  
Md Numan Hossain
Keyword(s):  
Risk Assessment ◽  
Petroleum Industry ◽  
Risk Identification ◽  
Engineering Practice ◽  
Engineering System ◽  
Safety Engineering ◽  
Financial Loss ◽  
Integrated Risk Assessment ◽  
Industrial Sectors ◽  
Gas Fields

The industrial sectors of Bangladesh mostly depend on the petroleum industry. Historically, risk and hazards are the common scenario in the petroleum industry occurring due to lack of efficient risk assessment, resulting in financial loss, injury, or harm for people, and the environment. To prevent these losses, it is essential to implement the best risk assessment plan.The objective of this research is toenhance the implementation of safety engineering systems in the petroleum industry through risk assessment. For this, purpose at first, the questionnaire survey for the perception of risk identification and safety system is performed to determine the current defects in the safety engineering system. Then, using SPSS software the risk analysis as well as ANOVA and reliability analysis of the collected data is accomplished to examine top risk factors. Concerning both interview and questionnaire analysis, an integrated risk assessment-based safety analysishas beenperformed to optimize the performance of the safety engineering system.The outcomes of this research expose the technical, procedural, and behavioral gap in the current risk assessment for the safe implementation of the safety engineering system of the petroleum industry of Bangladesh.

scholarly journals Risk Assessment System for Oil and Gas Pipelines Laid in One Ditch Based on Quantitative Risk Analysis

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 981 ◽  
Author(s):  
Peng Zhang ◽  
Guojin Qin ◽  
Yihuan Wang
Keyword(s):  
Risk Assessment ◽  
Risk Analysis ◽  
Risk Identification ◽  
Assessment System ◽  
Pipeline System ◽  
Engineering System ◽  
Potential Hazard ◽  
Event Tree ◽  
Total Risk ◽  
Event Tree Analysis

In view of the vegetation reduction caused by the continuous construction of oil and gaspipelines, the pipelines have been designed to be laid in one ditch to reduce land occupation.However, owing to the small spacing between the pipelines, the fault correlation between pipelineshas been proven to increase the potential hazard of adjacent pipelines and routing environments.The neglect of failure correlation in existing risk assessment methods leads to inaccurate results,which will lead to errors in maintenance decisions. Therefore, this paper proposed a riskassessment system for pipelines using this laying method. In the risk assessment, pipelines laid inone ditch (PLOD) were regarded as a series system relative to the routing environment. Therefore,the functional relationship between the total risk of the pipeline system and the risk of eachpipeline was obtained by combining the engineering system reliability theory with themathematical induction method. In addition, fuzzy set theory combined with fault tree analysiswas used to calculate the failure probability of each pipeline in the system. Event tree analysis wasused to sort out all the possible consequences of pipeline failure, and then the consequences wereunified into monetary units to evaluate the severity of failure consequences. Finally, the two partswere merged into a bow-tie diagram to realize the risk management and control of the pipeline.Meanwhile, risk acceptance criteria were formulated to analyze risks and to guide pipelinemaintenance. This system provides a complete risk assessment system for the pipeline system laidin one ditch, including the methods of risk identification, risk assessment, and risk analysis, whichare of great significance to ensure the safety of the pipeline and the surrounding environment usingthis laying method.

Risk analysis of cutting system under intuitionistic fuzzy environment

2020 ◽  
Vol 1 (1) ◽  
pp. 162-173
Author(s):  
Dinesh Kumar Kushwaha ◽  
◽  
Dilbagh Panchal ◽  
Anish Sachdeva ◽  
◽  
...  
Keyword(s):  
Risk Assessment ◽  
Failure Mode ◽  
Thermal Power ◽  
Failure Detection ◽  
Engineering System ◽  
Effect Analysis ◽  
Intuitionistic Fuzzy ◽  
Mode Effect ◽  
Cutting System ◽  
Failure Mode Effect Analysis

Failure Mode Effect Analysis (FMEA) is popular and versatile approach applicable to risk assessment and safety improvement of a repairable engineering system. This method encompasses various fields such as manufacturing, healthcare, paper mill, thermal power industry, software industry, services, security etc. in terms of its application. In general, FMEA is based on Risk Priority Number (RPN) score which is found by product of probability of Occurrence (O), Severity of failure (S) and Failure Detection (D). As human judgement is approximate in nature, the accuracy of data obtained from FMEA members depend on degree of subjectivity. The subjective knowledge of members not only contains uncertainty but hesitation too which in turn, affect the results. Fuzzy FMEA considers uncertainty and vagueness of the data/ information obtained from experts. In order to take into account, the hesitation of experts and vague concept, in the present work we propose integrated framework based on Intuitionistic Fuzzy- Failure Mode Effect Analysis (IF-FMEA) and IF-Technique for Order Preference by Similarity to Ideal Solution (IF-TOPSIS) techniques to rank the listed failure causes. Failure cause Fibrizer (FR) was found to be the most critical failure cause with RPN score 0.500. IF-TOPSIS has been implemented within IF-FMEA to compare and verify ranking results obtained by both the IF based approaches. The proposed method was presented with its application for examining the risk assessment of cutting system in sugar mill industry situated in western Uttar Pradesh province of India. The result would be useful for the plant maintenance manager to fix the best maintenance schedule for improving availability of cutting system.

An integrated risk-assessment framework for multiple threats to floodplain values in the Kakadu Region, Australia, under a changing climate

2018 ◽  
Vol 69 (7) ◽  
pp. 1159 ◽  
Author(s):  
P. Bayliss ◽  
C. M. Finlayson ◽  
J. Innes ◽  
A. Norman-López ◽  
R. Bartolo ◽  
...  
Keyword(s):  
Risk Assessment ◽  
At Risk ◽  
Invasive Species ◽  
Freshwater Ecosystems ◽  
Sensitivity Analyses ◽  
Assessment Framework ◽  
Integrated Risk Assessment ◽  
Invasive Species Control ◽  
Integrated Risk ◽  
Time Frames

The internationally important river–floodplains of the Kakadu Region in northern Australia are at risk from invasive species and future sea-level rise–saltwater inundation (SLR–SWI), requiring assessments of multiple cumulative risks over different time frames. An integrated risk-assessment framework was developed to assess threats from feral animals and aquatic weeds at three SLR-scenario time frames (present-day, 2070 and 2100) to natural (magpie goose habitats), cultural (indigenous hunting–fishing sites) and economic (tourism revenue less invasive species control costs) values. Probability density functions (pdfs) were fitted to spatial data to characterise values and threats, and combined with Monte Carlo simulation and sensitivity analyses to account for uncertainties. All risks were integrated in a Bayesian belief network to undertake ‘what if’ management-scenario analyses, and incorporated known ecological interactions and uncertainties. Coastal landscapes and socio-ecological systems in the region will be very different by 2100 as a result of SLR; freshwater ecosystems will transform to marine-dominated ecosystems and cannot be managed back to analogue conditions. In this context, future invasive-species risks will decrease, reflecting substantial loss of freshwater habitats previously at risk and a reduction in the extent of invasive species, highlighting the importance of freshwater refugia for the survival of iconic species.

Systems Engineering Design Projects in Freshmen Engineering Courses

1999 ◽  
Author(s):  
Peter R. Frise
Keyword(s):  
Systems Engineering ◽  
Writing Skills ◽  
Engineering Practice ◽  
First Year ◽  
Engineering System ◽  
High Failure Rate ◽  
Design Problems ◽  
Engineering Programs ◽  
Freshmen Students ◽  
System Solution

Abstract The first year of most engineering programs: does not normally include much material in engineering practice or design, nor are professionalism, human factors or the concept of an engineering system solution to design problems emphasized. This lack of engineering content has been found to be a factor in the relatively high failure rate in the first year due to students not becoming interested in, and energized by, their studies. The author has developed a number of open-ended design problems which have been successful in teaching the engineering method to freshmen students while at the same time not over-taxing their relatively undeveloped engineering analysis skills. The projects are described and examples are available upon request from the author to allow interested readers to use them in their own programs. The other benefit of these projects has been in identifying students who have difficulty with written communications. Using the design project reports as a diagnostic tool we have been able to refer these students to assistance with their writing skills from the on-campus writing tutorial service.

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