Journal of Loss Prevention in The Process Industries最新文献_第2页

The study of flame length for the horizontal jet flame of carbon dioxide and propane mixed gas 二氧化碳和丙烷混合气体水平喷射火焰的火焰长度研究

IF 3.6 3区工程技术

Journal of Loss Prevention in The Process Industries Pub Date : 2024-10-24 DOI: 10.1016/j.jlp.2024.105467

引用次数: 0

Aluminum dust concentration detection based on LSTM-Kalman filter 基于 LSTM-Kalman 滤波器的铝尘浓度检测

IF 3.6 3区工程技术

Journal of Loss Prevention in The Process Industries Pub Date : 2024-10-23 DOI: 10.1016/j.jlp.2024.105468

{"title":"Aluminum dust concentration detection based on LSTM-Kalman filter","authors":"","doi":"10.1016/j.jlp.2024.105468","DOIUrl":"10.1016/j.jlp.2024.105468","url":null,"abstract":"<div><div>Industrial dust emissions present serious hazards, including respiratory issues and explosion risks. Traditional dust concentration detection methods are often compromised by environmental factors. This study introduces a novel FFT-KF-LSTM-NET model to predict high-concentration aluminum powder levels, utilizing 128 sets of electrostatic induction measurement data. By applying the Fast Fourier Transform (FFT) to eliminate low-frequency interference, integrating Long Short-Term Memory (LSTM) networks for advanced time series analysis, and using the Kalman Filter (KF) for rapid model convergence, this approach significantly enhances prediction accuracy. The model achieves an 82% improvement in Mean Squared Error (MSE), reducing it to 0.1336, outperforming traditional methods. Furthermore, by modeling the voltage signal generated by charged dust particles in the electrostatic induction sensor's sensing area and using the first derivative of the voltage signal as a learning feature, the model's prediction speed is increased from 1.5 s-2 s–0.5 s, with improved anti-interference capabilities. These advancements position the FFT-KF-LSTM-NET model as a crucial tool for real-time, reliable dust concentration detection in industrial environments.</div></div>","PeriodicalId":16291,"journal":{"name":"Journal of Loss Prevention in The Process Industries","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Breathing of partially saturated headspaces in near-atmospheric storage tanks 近大气层储罐中部分饱和顶空的呼吸作用

IF 3.6 3区工程技术

Journal of Loss Prevention in The Process Industries Pub Date : 2024-10-20 DOI: 10.1016/j.jlp.2024.105462

引用次数: 0

Small-scale BLEVE: Near-field aerial shock overpressure and impulse 小规模 BLEVE：近场空中冲击超压和脉冲

IF 3.6 3区工程技术

Journal of Loss Prevention in The Process Industries Pub Date : 2024-10-19 DOI: 10.1016/j.jlp.2024.105463

{"title":"Small-scale BLEVE: Near-field aerial shock overpressure and impulse","authors":"","doi":"10.1016/j.jlp.2024.105463","DOIUrl":"10.1016/j.jlp.2024.105463","url":null,"abstract":"<div><div>This paper presents an investigation into one of the most damaging hazards associated with Boiling Liquid Expanding Vapor Explosion (BLEVE), specifically focusing on the near-field overpressure and impulse effects. Experiments were conducted at a small-scale to study the overpressure and impulse using aluminum tubes with a diameter of 50 mm and a length of 300 mm. The tubes were filled with pure propane liquid and vapor. The controlled variables, in this work included the failure pressure, the liquid fill level, and the weakened length along the tube top. These variables control the strength of the overpressure characterized by the peak overpressure amplitude, duration of this overpressure event, and the resultant impulse. Notably, these experiments at a small scale included experiments with a 100 % liquid fill level. This further confirmed that the vapor space is the main driver of the lead overpressure hazard. High-speed cameras and blast gauges effectively illustrated the progressive formation of the shock wave in both temporal and spatial dimensions. Furthermore, various predictive models available in the literature are discussed in this paper and new correlations were developed to quantify the overpressure duration and impulse. The current analysis aims to predict the potential consequences of overpressure events during a BLEVE.</div></div>","PeriodicalId":16291,"journal":{"name":"Journal of Loss Prevention in The Process Industries","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Visualization of integrated failure consequences of hazardous chemical leakage and explosion 危险化学品泄漏和爆炸综合故障后果可视化

IF 3.6 3区工程技术

Journal of Loss Prevention in The Process Industries Pub Date : 2024-10-18 DOI: 10.1016/j.jlp.2024.105464

引用次数: 0

Rupture energy coupling of alkali washing tower cylinder 碱洗塔筒体的断裂能量耦合

IF 3.6 3区工程技术

Journal of Loss Prevention in The Process Industries Pub Date : 2024-10-17 DOI: 10.1016/j.jlp.2024.105450

引用次数: 0

Exploring the research on managers’ safety commitment through the prism of leadership. Part 2: A systematic literature review 从领导力的角度探讨管理人员的安全承诺研究。第 2 部分：系统文献综述

IF 3.6 3区工程技术

Journal of Loss Prevention in The Process Industries Pub Date : 2024-10-12 DOI: 10.1016/j.jlp.2024.105460

{"title":"Exploring the research on managers’ safety commitment through the prism of leadership. Part 2: A systematic literature review","authors":"","doi":"10.1016/j.jlp.2024.105460","DOIUrl":"10.1016/j.jlp.2024.105460","url":null,"abstract":"<div><div>The topic of managers' commitment to safety is increasingly gaining the attention of scholars over the past two decades. Bibliometric analysis (Part 1) explored the managers' commitment to safety through the prism of leadership and outlined how the research on this topic developed over time. We identified the knowledge base and the intellectual structure of the research. Based on the research front and the most important terms, we proposed possible future directions in which this field might develop. Although bibliometric analysis provides a holistic and objective overview of the state of research on this topic, an in-depth insight into the research on managers' safety commitment in relation to leadership is needed. To obtain an in-depth understanding of the research topic, we conducted a systematic review of the literature presented in this paper (Part 2). The content analysis of the publications enabled us to closely examine the evolution of this research topic over the past two decades. Specifically, we explored the theoretical foundations of publications, clarified how the concept was studied in the literature, which methods were used to address the concept, identified antecedents and outcomes of managers' commitment to safety, and proposed a research agenda that would help the scholars to develop this research topic further. The results of the review shed light on the shift in the focus of publications and highlight that managers' commitment is starting to be studied as an independent concept and explored separately from the concepts of safety climate and culture. This indicates a new direction in the research where managers' commitment and leadership are at the fore. The findings of the systematic review of the literature (Part 2) complement the bibliometric analysis (Part 1) and provide a more in-depth picture of the research on managers’ commitment to safety and leadership.</div></div>","PeriodicalId":16291,"journal":{"name":"Journal of Loss Prevention in The Process Industries","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study the impact of spacer at thermal degradation process of MLI-based insulation in fire condition 研究间隔物在火灾条件下对基于 MLI 的隔热材料热降解过程的影响

IF 3.6 3区工程技术

Journal of Loss Prevention in The Process Industries Pub Date : 2024-10-12 DOI: 10.1016/j.jlp.2024.105461

{"title":"Study the impact of spacer at thermal degradation process of MLI-based insulation in fire condition","authors":"","doi":"10.1016/j.jlp.2024.105461","DOIUrl":"10.1016/j.jlp.2024.105461","url":null,"abstract":"<div><div>To reduce CO<sub>2</sub> emissions, energy carriers such as hydrogen are considered to be a solution. Consumption of hydrogen as a fuel meets several limitations such as its low volumetric energy density in gas phase. To tackle this problem, storage as well as transportation in liquified phase is recommended. To be able to handle this component in liquid phase, an efficient thermal insulation e.g., MLI insulation is required. Different studies have been addressed the vulnerability of such insulation against high thermal loads e.g., in an accident engaging fire. Some of research works have highlighted the importance of considering the MLI thermal degradation focusing on its reflective layer. However, limited number of studies addressed the thermal degradation of spacer material and its effect on the overall heat flux.</div><div>In this study, through systematic experimental measurements, the effect of thermal loads on glass fleece, glass paper as well as polyester spacers are investigated. The results are reported in various temperature and heat flux profiles. Interpreting the temperature profiles revealed that, as the number of spacers in the medium increases, the peak temperature detectable by the temperature sensor on the measurement plate decreases. Each individual spacer contributes to mitigating the radiative energy received by the measurement plate. Stacks of 20–50 spacers (this is the number of layers in commercial MLI systems applied for liquid hydrogen applications) can potentially reduce the thermal radiation by 1–2 orders of magnitude.</div><div>An empirical correlation to predict a heat flux attenuation factor is proposed, which is useful for further numerical and analytical studies in the temperature range from ambient to 300 °C.</div></div>","PeriodicalId":16291,"journal":{"name":"Journal of Loss Prevention in The Process Industries","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on the diffusion and control of unsafe behaviors among chemical industry park enterprises based on the SEIR evolutionary game model 基于 SEIR 演化博弈模型的化工园区企业不安全行为扩散与控制研究

IF 3.6 3区工程技术

Journal of Loss Prevention in The Process Industries Pub Date : 2024-10-10 DOI: 10.1016/j.jlp.2024.105456

{"title":"Research on the diffusion and control of unsafe behaviors among chemical industry park enterprises based on the SEIR evolutionary game model","authors":"","doi":"10.1016/j.jlp.2024.105456","DOIUrl":"10.1016/j.jlp.2024.105456","url":null,"abstract":"<div><div>In order to control the diffusion of unsafe behaviors among chemical industrial park enterprises, a Susceptible-Exposed-Infectious-Recovered (SEIR) evolutionary game model is constructed based on the theory of epidemiology and evolutionary game theory. By exploring the game relationship between emergency management departments and safety assessment agencies, the paper analyzes the diffusion paths and evolutionary patterns of unsafe behaviors in chemical industrial park enterprises under different behavioral strategies adopted by both parties. Furthermore, it examines the process and patterns of system evolution to a positive stable state, and conducts multi-scenario simulation and analysis. The results indicate that the interactive behaviors of \"strict regulation\" by emergency management departments and \"high-quality safety assessment\" by safety assessment agencies are more conducive to controlling the diffusion of unsafe behaviors among chemical industrial park enterprises. Improving the efficiency of emergency management departments, establishing an attractive and constraining reward and punishment system to guide safety assessment agencies in conducting high-quality safety assessments, and stimulating the initiative of chemical industrial park enterprises in safety behaviors will be more conducive to forming an integrated, coordinated, and mutually constraining mechanism for work safety governance.</div></div>","PeriodicalId":16291,"journal":{"name":"Journal of Loss Prevention in The Process Industries","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental study on hydrogen pipeline leakage: Negative pressure wave characteristics and inline detection method 氢气管道泄漏实验研究：负压波特性和在线检测方法

IF 3.6 3区工程技术

Journal of Loss Prevention in The Process Industries Pub Date : 2024-10-09 DOI: 10.1016/j.jlp.2024.105452

{"title":"Experimental study on hydrogen pipeline leakage: Negative pressure wave characteristics and inline detection method","authors":"","doi":"10.1016/j.jlp.2024.105452","DOIUrl":"10.1016/j.jlp.2024.105452","url":null,"abstract":"<div><div>This paper presents an experimental study on a potential safety system for hydrogen fuel cells. It focuses on early leakage detection and localization. This would enable effective system response to avoid the effects of catastrophic loss of containment. Experimental results are presented from a pipeline setup wherein the leak is identified utilizing inline pressure sensors and flowmeters. The investigations involve recorded data at two leak locations at different initial pressures, mass flow rates, and leak diameters. The leak detection technique is based on analysis of the negative pressure wave (NPW) intensity and propagation duration, denoted as peak-to-peak amplitude (Δh) and oscillation period (Δτ). They are extracted from filtered pressure records' first derivative (dp/dt). Δh and Δτ increase as the initial mass flow rate and leak diameter decrease. Therefore, this approach is advantageous for detecting leaks from tiny cross-sections. Δh and Δτ measured at two leak positions at different lengths from the system inlet increase at a higher initial flow rate of 1.0 g/s, but they exhibit opposite behavior at a lower rate (0.42 g/s). Increasing the sampling rate in the dp/dt-time graphs enhances the precision of leak localization. Calculation results show an effective leakage localization with an accuracy of 15 mm (2.5%). The leak flow rate during nitrogen leakage tests is about three times that of hydrogen, and it has higher Δh (about two times at 10 bar).</div></div>","PeriodicalId":16291,"journal":{"name":"Journal of Loss Prevention in The Process Industries","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0