Investigation on the approach of intercepting fragments generated by vessel explosion using barrier net

Sun, Defeng; Jiang, Juncheng; Zhang, Mingguang; Wang, Zhirong; Zhang, Yinian; Yan, Lei; Zhang, Hao; Du, Xueyan; Zou, Yusong

doi:10.1016/j.jlp.2016.10.012

Cited by 10 publications

(7 citation statements)

References 30 publications

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“…The fragmentation and posterior projections generated by a primary explosion produced in tanks or equipment containing highly pressurized gas or liquids in general lead to catastrophic failures due to the successive explosions generated by the fragments' projection, creating secondary accidents, and possibly tertiary, until the process stops. Effects can be assessed by analysis or using a Monte Carlo simulation; in general, three main steps of analysis are required [80][81][82][83][84][85][86]:…”

Section: Domino Effect Treatmentmentioning

confidence: 99%

Analysis and Characterization of Risk Methodologies Applied to Industrial Parks

et al. 2020

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It is important to evaluate the risks in industrial parks and their processes due to the consequences of major accidents and especially the domino effect. Scientific works present a wide possibility of models to deal with these situations. In this work, based on the information extracted from the scientific literature, six groups of risk methodologies are defined, analyzed, and characterized with methods that cover the standards, preventive, probabilistic, traditional, modern, and dynamic evaluation that are applied or could be used in industrial parks. It also tries to achieve the objective of determining which are more appropriate if the possible situations and causes that can produce an accident are taken into account, identifying and evaluating them with characteristics of simultaneity and immediacy, determining the probability of an accident occurring with sufficient advance in time to avoid it under the use of a working operational procedure. There is no definitive methodology, and it is necessary that they complement each other, but considering the proposed objective, the integrated application of traditional methodologies together with the management of safety barriers, the dynamic evaluation of risks, and the inclusion of machine learning systems could fulfill the proposed objective.

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Section: Domino Effect Treatmentmentioning

confidence: 99%

Analysis and Characterization of Risk Methodologies Applied to Industrial Parks

et al. 2020

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“…Direction z: It can be shown easily that the final form of the equations of fragment motion (9) and (11) are equivalent to equations (12) and (13) which represent the balance equations of the inertial acceleration a fr with the resistive and the thrust acceleration a drag and a lift , respectively.…”

Section: The Dynamics Of a Fragmentmentioning

confidence: 99%

“…Mass distribution from the previous study served as a basis for several recent pieces of research in the field of fragmentation of tanks [10][11]. Fragmentation analysis serves to define preventive measures to protect process installations from a potential fragment impact [12]. The fragmentation analysis in the presented study is limited to the identification of kinematic parameters.…”

Section: Introductionmentioning

confidence: 99%

Numerical Model of Fragmentation Hazards Caused by a Tank Explosion

Tepic

Lаlić

Tanackov

et al. 2020

TFAMENA

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The paper analyses the fragmentation of a horizontal cylindrical tank caused by the effect of boiling liquid expanding vapour explosion (BLEVE). A fragmentation model for identification of kinematic parameters is proposed. The originality of the model lies in the introduction of initial acceleration. Using this model, the initial velocity can be assessed without knowing the values of explosion energy and the mass of fragments. The application of this model reduces the uncertainty in assessing the range of fragments and the risk of fragmentation. The initial acceleration of fragments generated in an explosion is assessed according to the geometry and type of the tank material. The initial acceleration, which does not depend on the kinematic parameters of the constant wall thickness of the tank, allows a reliable assessment of the launch angle of a fragment. Characteristic forms of the fragment trajectory are identified, depending on the aerodynamic and thrust acceleration coefficients, and probability distributions of the fragment ranges are given. Relevant factors in the assessment of fragmentation hazards include the trajectory of a fragment, the height of a target and its distance from the tank. It was concluded that aerodynamic fragments at distances of up to 50 m are not a danger to targets of up to 15 m high. Fragments with high air resistance and low thrust can endanger targets of the same height at distances of over 200 m. The presented fragmentation model includes the effect of heating due to the BLEVE effect and can be applied to all types of tanks.

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“…However, previous methods used for assessing the probability of explosion fragments hitting targets have some limitations. Earlier studies [4] have considered the ejection process as the fragments maintaining the same "posture" and moving in parallel in space. It is assumed that the "posture" of the fragments during ejection remains unchanged, and collision occurs when the ejection trajectory of the explosion fragments coincides with the outer tangent cube of the target in space.…”

Section: Introductionmentioning

confidence: 99%

A model study of the effect of explosion fragment size on ejection hazard

Wang

Sun

2023

3rd International Conference on Applied Mathematics, Modelling, and Intelligent Computing (CAMMIC 2023)

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In order to investigate the impact mechanism of explosion fragment size on its collision probability, five typical fragments that often appear in industrial accidents were selected. Taking into account the rotation of the fragments during ejection, a correction factor for collision probability was proposed, and a modified model for fragment collision probability was established. The results of the case analysis show that the maximum ejection distance of the five types of fragments can reach 550-950 m, and the maximum possible ejection distance is distributed between 76-544 m. The ejection distance of CE-type fragments is relatively small, while that of PT-type fragments is relatively large. In addition, under the condition of considering the size of the fragments, increasing the size of the fragments can improve the collision probability. The impact of the fragment size on the collision probability is more significant within a close range of 60 m. When the distance between the fragment and the target exceeds 60 m, the impact of the fragment size on the collision probability can be ignored.

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Investigation on the approach of intercepting fragments generated by vessel explosion using barrier net

Cited by 10 publications

References 30 publications

Analysis and Characterization of Risk Methodologies Applied to Industrial Parks

Analysis and Characterization of Risk Methodologies Applied to Industrial Parks

Numerical Model of Fragmentation Hazards Caused by a Tank Explosion

A model study of the effect of explosion fragment size on ejection hazard

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