scholarly journals Fire and Explosion Risk Analysis and Evaluation for LNG Ships

2012 ◽  
Vol 45 ◽  
pp. 70-76 ◽  
Author(s):  
Jianhua Li ◽  
Zhenghua Huang
Keyword(s):  
Risk Analysis ◽  
Analysis And Evaluation ◽  
Fire And Explosion ◽  
Explosion Risk

scholarly journals Quantitative Risk Analysis of Offshore Fire and Explosion Based on the Analysis of Human and Organizational Factors

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Yan Fu Wang ◽  
Yu Lian Li ◽  
Biao Zhang ◽  
Pei Na Yan ◽  
Li Zhang
Keyword(s):  
Risk Analysis ◽  
Organizational Factors ◽  
Event Tree ◽  
Analysis Framework ◽  
Analysis Model ◽  
Quantitative Risk Analysis ◽  
Dynamic Risk ◽  
Fire And Explosion ◽  
Human And Organizational Factors ◽  
Explosion Risk

A dynamic risk analysis model of offshore fire and explosion is proposed in this paper. It considers the effect of human and organizational factors in a more explicit way than current traditional risk analysis methods. This paper begins with exploring the recent advances on offshore fire and explosion risk analysis theories, followed by briefly introducing the research techniques employed in the proposed hybrid causal logic model which consists of event tree, fault tree, Bayesian network, and system dynamics. Thereafter, it proposes a quantitative risk analysis framework. At last, the applicability of this model to the offshore platform is also discussed. It aims to provide guideline for risk analysis of offshore fire and explosion.

scholarly journals Fire and explosion Risk Analysis Using Bow-Tie Method and Fuzzy-Bayesian Network in Process Industries

2021 ◽  
Vol 18 (1) ◽  
pp. 139-154
Author(s):  
Tahere eskandari ◽  
Mostafa Mirzaei ◽  
Iraj mohammadfam ◽  
◽  
◽  
...  
Keyword(s):  
Risk Analysis ◽  
Bayesian Network ◽  
Process Industries ◽  
Fire And Explosion ◽  
Explosion Risk ◽  
Bow Tie

Explosion Risk Analysis on the Liquefaction Process of LNG-FPSO at the PFD Level

2017 ◽  
Author(s):  
Wonwo You ◽  
Jaeuk Park ◽  
Youngsub Lim
Keyword(s):  
Risk Analysis ◽  
Oil And Gas ◽  
Risk Estimation ◽  
Ignition Probability ◽  
Specific Process ◽  
Frequency Calculation ◽  
Fire And Explosion ◽  
Liquefaction Process ◽  
Explosion Accidents ◽  
Explosion Risk

The potential risk of an offshore processing facility is the major important part in the oil and gas industry due to its limited space causing difficulties in evacuation. An offshore processing facility is normally exposed to flammable oil and gas in the operating phase. Especially, uncontrolled hydrocarbon leaks or ruptures of the equipment present main threats. These failures can lead to fire and explosion disaster. Some studies have proposed fire and explosion assessment methodologies and made fire and explosion assessment tools. These tools can provide risk assessments result using physical effect modelling software and following the related standards or engineering practices according to accident scenarios. Nevertheless, existing fire and explosion assessment procedures are still not comprehensive enough to applicate a specific process due to its complexity and are not clear which stage in a project is appropriate for applying it. This paper focuses only on explosion accidents and discusses the development of an explosion risk analysis procedure possible to apply at process flow diagram (PFD) level. The explosion risk analysis procedure using PFD has 6 steps; modelling of a process, scenario selection, inventory calculation, frequency calculation, consequence modelling and risk estimation. It starts at modelling of a specific process using process simulation software, HYSYS. The process modelling can be optimized by the existing methods and finally provide the PFD for the specific process. In the scenario selection step, the information required to perform a risk analysis is identified. The inventory calculation conducts to calculate the inventory of a defined segment after sizing of the equipment in the PFD. The frequency calculation consists of leak frequency and ignition probability. The leak frequency can be calculated with historical database and the ignition probability can be calculated with a specific ignition probability model. The consequence modelling is conducted by using physical effect modelling software, PHAST. It can provide the distance to specified overpressure. Finally, at the risk estimation step, the risk results are evaluated. This procedure can help to applicate a specific process easily and provide explosion risk assessment tool at PFD level. This paper conducts the case study for a liquefied natural gas floating production storage offloading (LNG-FPSO) which is one of the representative offshore processing facilities. Especially, a natural liquefaction process in a LNG-FPSO, which liquefies the processed natural gas to store in a storage tank of a LNG-FPSO, is the most important process in terms of cost and risk. In the situation the most of ongoing or prospective projects for LNG-FPSO adopt dual mixed refrigerants (DMR) liquefaction process, the representative configurations of the DMR liquefaction processes are evaluated and compared. It can help decision making through providing which configuration has an advantage in terms of explosion accidents.

scholarly journals Investigation of the Structural Strength of Existing Blast Walls in Well-Test Areas on Drillships

2020 ◽  
Vol 8 (8) ◽  
pp. 583
Author(s):  
Byeongkwon Jung ◽  
Jeong Hwan Kim ◽  
Jung Kwan Seo
Keyword(s):  
Risk Analysis ◽  
Structural Strength ◽  
Design Method ◽  
Plate Thickness ◽  
Offshore Structures ◽  
Well Test ◽  
Current Design ◽  
Fire And Explosion ◽  
Explosion Accidents ◽  
Explosion Risk

Blast walls are installed on the topside of offshore structures to reduce the damage from fire and explosion accidents. The blast walls on production platforms such as floating production storage, offloading, and floating production units undergo fire and explosion risk analysis, but information about blast walls on the well-test area of drillship topsides is insufficient even though well tests are performed 30 to 45 times per year. Moreover, current industrial practices of design method are used as simplified elastically design approaches. Therefore, this study investigates the strength characteristic of blast wall on drillship based on the blast load profile from fire and explosion risk analysis results, as well as the ability of the current design scantling of the blast wall to endure the blast pressure during the well test. The maximum plastic strain of the FE results occurs at the bottom connection between the vertical girder and the blast wall plate. Based on the results, several alternative design applications are suggested to reduce the fabrication cost of a blast wall such as differences of stiffened plated structure and corrugated panels, possibility of changing material (mild steel), and reduced plate thickness for application in current industrial practices.

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