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Risk identification of integral pressurized water reactor (IPWR) cooling system using a combination HAZOP, FMEA, and FTA methods 采用 HAZOP、FMEA 和 FTA 组合方法识别整体式压水反应堆(IPWR)冷却系统的风险
IF 1 4区 工程技术 Q4 ENGINEERING, CHEMICAL Pub Date : 2024-01-03 DOI: 10.1002/prs.12570
Deswandri Deswandri, Sudarno Sudarno, Ratih Luhuring Tyas, Anggraini Ratih Kumaraningrum, Restu Maerani, Ibnu Maulana Hidayatullah, Muhamad Sahlan, Azmi Mohd Shariff, Heri Hermansyah
Integral Pressurized Water Reactor (IPWR) is gaining attention for use in Indonesia due to lower initial capital investment, sitting flexibility, and high level of inherent safety. IPWR relies heavily on passive cooling systems that have many advantages but lacks operational experience because no one operates commercially. Therefore, it is necessary to carry out a risk analysis related to passive cooling system failures that may occur during operation. Even if conventional risk analysis methods are applied singularly, the results still have shortcomings. This study aims to integrate the use of the Hazard and Operability Analysis (HAZOP), Fault Tree Analysis (FTA), and Failure Mode and Effect Analysis (FMEA) methods to identify risks in the IPWR primary cooling system during normal operation. HAZOP was used to identify hazards, FTA analyzed the root causes of the critical problems, and the basic event's FMEA was developed for risk ranking and mitigation measures. This combined methodology makes risk assessment more systematic and comprehensive because it manages entity-wide risk. The results offer valuable insights for stakeholders involved in decision-making regarding the development of nuclear power plants (NPPs) in Indonesia.
整体式压水堆(IPWR)由于初始资本投资较低、坐席灵活性高、固有安全性高,在印度尼西亚的应用越来越受到关注。IPWR 在很大程度上依赖于被动冷却系统,该系统有许多优点,但由于无人进行商业运营,因此缺乏运营经验。因此,有必要对运行过程中可能发生的被动冷却系统故障进行风险分析。即使单独使用传统的风险分析方法,其结果也存在缺陷。本研究旨在综合使用危险与可操作性分析 (HAZOP)、故障树分析 (FTA) 和故障模式与影响分析 (FMEA) 方法,以识别 IPWR 一级冷却系统在正常运行期间的风险。HAZOP 用于识别危险,FTA 分析关键问题的根本原因,而基本事件的 FMEA 则用于风险排序和缓解措施。这种综合方法使风险评估更加系统和全面,因为它可以管理整个实体的风险。研究结果为参与印度尼西亚核电厂(NPP)发展决策的利益相关者提供了宝贵的见解。
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引用次数: 0
Influence of high temperature during tensile test for stainless steel using acoustic emission 利用声发射进行不锈钢拉伸试验时高温的影响
IF 1 4区 工程技术 Q4 ENGINEERING, CHEMICAL Pub Date : 2023-12-29 DOI: 10.1002/prs.12576
Mazian Mohammad, Abdul Rahim Othman, Mohd Faisal Ismail
This paper explores the application of acoustic emission (AE) monitoring in mechanical and materials studies, specifically focusing on the detection of plastic deformation, fracture, and crack growth. However, the influence of high temperature on AE signals and its effects on mechanical properties are not fully understood due to the limitations of sensors in high-temperature environments. To address this gap, the study investigates the impact of high temperatures on the mechanical properties of stainless steel SS304 using AE techniques during tensile testing. Two temperature conditions were tested: 600 and 700°C. AE sensors connected to specimens captured AE activity using a designated waveguide, and a Continuous Creep Monitoring Instrument (CCMi) recorded the responses. Sensitivity testing using the pencil-lead break (PLB) technique ensured the sensor's capability. The proposed frequency-based analysis method, fast Fourier transform amplitude (FFTA) analysis, was employed to effectively analyze the AE signals. The results revealed significant AE features and frequency distributions associated with elastic deformation, plastic deformation, and fracture regions. These findings establish a foundation for utilizing AE techniques in crack detection and monitoring under high-temperature loading, contributing to equipment reliability and structural integrity.
本文探讨了声发射(AE)监测在机械和材料研究中的应用,尤其侧重于检测塑性变形、断裂和裂纹生长。然而,由于传感器在高温环境中的局限性,人们对高温对 AE 信号的影响及其对机械性能的影响尚未完全了解。为了填补这一空白,本研究利用拉伸测试期间的 AE 技术研究了高温对 SS304 不锈钢机械性能的影响。测试了两种温度条件:600 和 700°C。连接到试样上的 AE 传感器使用指定的波导捕捉 AE 活动,而连续蠕变监测仪 (CCMi) 则记录响应。使用铅笔引线断裂(PLB)技术进行的灵敏度测试确保了传感器的能力。为了有效地分析 AE 信号,我们采用了基于频率的分析方法--快速傅立叶变换振幅分析法(FFTA)。结果显示了与弹性变形、塑性变形和断裂区域相关的重要 AE 特征和频率分布。这些发现为在高温加载条件下利用 AE 技术进行裂纹检测和监控奠定了基础,有助于提高设备可靠性和结构完整性。
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引用次数: 0
Collection and analysis of hydrocarbon gas buried onshore pipeline accidents in Indonesia as the databases for failure frequency assessment in a quantitative risk analysis 收集和分析印度尼西亚碳氢化合物天然气埋地陆上管道事故,作为定量风险分析中故障频率评估的数据库
IF 1 4区 工程技术 Q4 ENGINEERING, CHEMICAL Pub Date : 2023-12-28 DOI: 10.1002/prs.12577
Darmawan Ahmad Mukharror, Ibnu Maulana, Muhammad Yusuf, Hary Devianto, Andy Noorsaman Sommeng, Sutrasno Kartohardjono, Heri Hermansyah
As of May 31, 2022, approximately 18,687 km of gas pipeline has been built in Indonesia. However, the pipeline failure data are yet to be gathered or evaluated. In quantitative risk assessment (QRA), the pipeline failure frequency is calculated by a generic failure frequency approach. Most of these generic failure frequency data are based on other region pipeline incident databases. This paper aims to provide the basis of data for the failure frequency of Indonesia's buried onshore pipeline. Accident data from 1127.9 km of underground onshore gas pipelines within 30 years (1976–2006) in Indonesia were gathered and assessed to provide the cause and effect of pipeline age and diameter on the generic failure rate. This research reveals the average failure rate of 5.32E-04/km-year of onshore pipelines in Indonesia. The study concluded that baseline failure frequencies from this analysis could be used for buried onshore pipeline quantitative risk assessment purposes. Further pipeline failure research for a relatively current period (e.g., from 2006 to 2022), type of installation (e.g., buried, or non-buried), and other applications of the pipeline (e.g., offshore pipeline) should be conducted as a way forward for this study to have a complete database for Indonesian accidents.
截至 2022 年 5 月 31 日,印度尼西亚已建成约 18,687 公里的天然气管道。然而,管道故障数据尚未收集或评估。在定量风险评估 (QRA) 中,管道故障频率是通过通用故障频率法计算得出的。这些通用故障频率数据大多基于其他地区的管道事故数据库。本文旨在为印尼陆上埋地管道的故障频率提供数据基础。本文收集并评估了印度尼西亚 30 年内(1976-2006 年)1127.9 公里陆地地下天然气管道的事故数据,以提供管道年龄和直径对一般故障率的影响。研究显示,印度尼西亚陆上管道的平均故障率为 5.32E-04/公里-年。研究认为,该分析得出的基准故障频率可用于陆上埋地管道定量风险评估。应针对相对较近的时期(如从 2006 年到 2022 年)、安装类型(如埋地或非埋地)以及管道的其他应用(如海上管道)开展进一步的管道故障研究,以此作为本研究拥有完整的印尼事故数据库的前进方向。
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引用次数: 0
Inhibition behavior and heat transfer of flame spread over liquid fuel with the influence of a step obstacle in the gas phase 受气相阶梯障碍物影响的液体燃料火焰传播的抑制行为和热传递
IF 1 4区 工程技术 Q4 ENGINEERING, CHEMICAL Pub Date : 2023-12-22 DOI: 10.1002/prs.12564
Shenlin Yang, Peiyuan Hu, Ranran Li, Manhou Li, Quanmin Xie, Jingchuan Li
The transportation of oil is an important aspect of chemical process safety. In the accidental leakage of oil and related products, the flame spread occurs occasionally when the liquid fuel is activated by a pilot flame. In the potential application of fire prevention, a step obstacle placed above the oil ditch may effectively hinder the flame spread. The effectiveness of the usage of a step obstacle depends on the size of the obstacle and the heat exchange mechanism. Therefore, the investigation of inhibition behavior and heat transfer of liquid flame spread with gas step obstacle is performed. The hot fluids flow inside the channel to carry out the convection heat to the initial cold oils on the opposite of the gas step obstacle. The flame configuration is blocked behind the step obstacle. The flame spread behaviors including flame morphology, inhibition time, and air entrainment are characterized and analyzed. The heat flows of flame radiation and liquid‐phase convection are theoretically calculated, and the primary heat transfer mechanism is determined. This work is helpful for the development of fire safety technology and the establishment of standard specifications for oil transportation.
油品运输是化工工艺安全的一个重要方面。在油类及相关产品的意外泄漏中,液体燃料被引火激活时偶尔会发生火焰蔓延。在潜在的防火应用中,在油沟上方设置台阶式障碍物可有效阻止火焰蔓延。阶梯障碍物的使用效果取决于障碍物的大小和热交换机制。因此,本文研究了气体阶梯障碍物对液体火焰蔓延的抑制行为和热量传递。热流体在通道内流动,将对流热量传给气体阶梯障碍物对面的初始冷油。火焰配置被阻挡在阶梯障碍物后面。对火焰形态、抑制时间和空气夹带等火焰传播行为进行了表征和分析。对火焰辐射和液相对流的热流进行了理论计算,并确定了主要的传热机制。这项工作有助于消防安全技术的发展和石油运输标准规范的制定。
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引用次数: 0
Study of ethanol vapor explosion and prediction based on chemical kinetics under high temperature and pressure 高温高压下乙醇蒸汽爆炸研究及基于化学动力学的预测
IF 1 4区 工程技术 Q4 ENGINEERING, CHEMICAL Pub Date : 2023-12-20 DOI: 10.1002/prs.12566
Yingquan Qi, Li Ding, Yong Pan, Jingran Liu, Supan Wang
The study of the explosion parameters of ethanol–air mixture at high pressure and temperature is essential for the safe production of ethanol. However, the explosion characteristics of ethanol vapor at various pressures and temperatures are limited. The mechanism at the flammability limits of ethanol has not been clarified, and the corresponding prediction model is also lacking. In this study, chemical kinetics and machine learning are used to study the mechanism of ethanol explosion and build predictive models, respectively. Our findings show that an increase in the initial pressure has a more pronounced influence on the explosion pressure (Pex) and pressure rise rate (dp/dt) than an increase of temperature. The variation trend of the upper flammability limit (UFL) of ethanol is related to the different effects of temperature and pressure on OH radicals. H + O2<>OH + O and HO2 + CH3<>OH + CH3O had the greatest effect on the generation of OH radicals. The quantitative relationship between the H, O, and OH radicals and UFL was constructed by machine learning, providing a new research perspective for the prediction of the UFL of an inflammable fuel under different pressures and temperatures. The results of the study will provide theoretical and practical guidance for the prevention and control of explosions in the ethanol production process.
研究乙醇-空气混合物在高压和高温下的爆炸参数对乙醇的安全生产至关重要。然而,乙醇蒸汽在不同压力和温度下的爆炸特性却很有限。乙醇易燃极限的机理尚未阐明,也缺乏相应的预测模型。本研究利用化学动力学和机器学习分别研究乙醇爆炸的机理和建立预测模型。研究结果表明,与温度升高相比,初始压力升高对爆炸压力(Pex)和压力上升速率(dp/dt)的影响更为明显。乙醇可燃上限(UFL)的变化趋势与温度和压力对羟自由基的不同影响有关。H + O2<>OH + O 和 HO2 + CH3<>OH + CH3O 对 OH 自由基的生成影响最大。通过机器学习构建了H、O和OH自由基与UFL之间的定量关系,为预测不同压力和温度下易燃燃料的UFL提供了新的研究视角。研究结果将为预防和控制乙醇生产过程中的爆炸提供理论和实践指导。
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引用次数: 0
Application of machine learning methods for process safety assessments 机器学习方法在工艺安全评估中的应用
IF 1 4区 工程技术 Q4 ENGINEERING, CHEMICAL Pub Date : 2023-12-20 DOI: 10.1002/prs.12562
Tarek Bengherbia, Faisal A. Syed, Jenny Chew, Fathullah A. Khalid, Alex F. T. Goh, Kenza Chraibi, Mohammed Zainal Abdeen
The accurate prediction of gas dispersion and the potential consequences of gas explosions hold a pivotal role in the assessment of explosion design loads for oil and gas processing facilities. This often involves the use of computational fluid dynamics (CFD) simulations, a widely adopted practice in the field. The extent of CFD simulations required depends on the specific characteristics and size of the facility. In many cases, a substantial number of simulations, often in the thousands, are needed to comprehensively assess the potential outcomes in the event of a hydrocarbon loss of containment. These simulations account for the complex three-dimensional nature of the facility, the surrounding environmental conditions, and the properties of the leaking hydrocarbon fluids. Although unquestionably invaluable, CFD simulations impose significant temporal constraints upon their execution and necessitate the allocation of substantial efforts and Central Processing Unit (CPU) time. In this paper we develop a neural model tailored specifically for the analysis of CFD gas dispersion and gas explosion scenarios. This model leverages the capabilities of machine learning algorithms to expedite the execution of these complex studies. The proposed neural network model has the advantage of being able to handle a wide range of scenarios in a fraction of time it takes to perform the CFD simulations, making it particularly useful for large-scale processes facilities. The accuracy of the predictions is remarkably high, providing a high level of confidence in the predictions of the flammable gas clouds sizes across various scenarios, as well as the resulting explosion overpressures.
准确预测气体扩散和气体爆炸的潜在后果在评估石油和天然气加工设施的爆炸设计载荷方面起着关键作用。这通常需要使用计算流体动力学 (CFD) 模拟,这也是该领域广泛采用的一种做法。所需的 CFD 模拟程度取决于设施的具体特征和规模。在许多情况下,需要进行大量的模拟,通常需要数千次模拟,才能全面评估碳氢化合物泄漏时可能出现的结果。这些模拟要考虑到设施的复杂三维性质、周围环境条件以及泄漏碳氢化合物流体的特性。尽管 CFD 模拟的价值毋庸置疑,但在执行过程中会受到很大的时间限制,需要花费大量的精力和中央处理器(CPU)时间。在本文中,我们开发了一种专门用于分析 CFD 气体扩散和气体爆炸情景的神经模型。该模型利用机器学习算法的能力,加快了这些复杂研究的执行速度。所提出的神经网络模型的优势在于,它能够在执行 CFD 模拟所需的一小部分时间内处理各种情况,因此特别适用于大型工艺设施。预测的准确性非常高,对各种情况下可燃气体云的大小以及由此产生的爆炸超压的预测具有很高的可信度。
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引用次数: 0
Computer-aided design of insect-repellent formulation with inherent safety assessment 计算机辅助设计具有内在安全性评估的驱虫配方
IF 1 4区 工程技术 Q4 ENGINEERING, CHEMICAL Pub Date : 2023-12-18 DOI: 10.1002/prs.12568
Maxwell Judd Lawrence, Rafeqah Raslan, Nur Shahidah Ab Aziz
Insect repellents are one of the most effective ways to prevent the spread of diseases such as dengue, malaria, and yellow fever. However, most insect repellents contain ingredients that pose a significant risk to consumers. Therefore, this research aims to design a safer and less harmful insect-repellent formulation based on the formulated product design methodology. Computer-aided molecular design (CAMD) methodology was employed to design an insect-repellent solvent that exhibits minimum safety and health risks. The safety and health hazards of all the selected ingredients were then assessed using an inherent safety and health index known as the Product Ingredient Safety and Health Index (PISHI). As a result, the proposed insect-repellent formulation with minimum safety and health risks may consist of picaridin, 1,5-pentanediol, and linalool. This research contributed to an inherently safer formulation design, where the identification and elimination of hazardous ingredients has been done at the early design stage. The safer and less harmful ingredients used in the insect-repellent formulation may reduce the significant risk to consumers.
驱虫剂是预防登革热、疟疾和黄热病等疾病传播的最有效方法之一。然而,大多数驱虫剂都含有对消费者构成重大风险的成分。因此,本研究旨在根据配方产品设计方法,设计一种更安全、危害更小的驱虫剂配方。研究采用计算机辅助分子设计(CAMD)方法,设计出一种安全和健康风险最小的驱虫剂溶剂。然后,利用被称为产品成分安全与健康指数(PISHI)的固有安全与健康指数对所有选定成分的安全与健康危害进行了评估。结果表明,所建议的安全和健康风险最低的驱虫配方可能由吡啶、1,5-戊二醇和芳樟醇组成。这项研究有助于设计出本质上更安全的配方,在设计初期就识别并消除了有害成分。驱虫剂配方中使用更安全、危害更小的成分可降低对消费者的重大风险。
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引用次数: 0
Risk assessment of LNG bunkering vessel operation based on formal safety assessment method 基于正式安全评估方法的液化天然气加注船运营风险评估
IF 1 4区 工程技术 Q4 ENGINEERING, CHEMICAL Pub Date : 2023-12-11 DOI: 10.1002/prs.12561
Yunlong Wang, Zhiqiang Cha, Guopeng Liang, Xin Zhang, Kai Li, Guan Guan
With the increase of Liquefied Natural Gas (LNG) fuel-powered vessels, LNG bunkering vessels have become an important development direction of LNG bunkering technology for its advantages. However, the LNG bunkering vessel operation risk assessment is relatively few. Formal Safety Assessment (FSA) is a novel structured and systematic risk analysis method for Marine engineering, through the data analysis based on probability theory, people can foresee the risk before the accident and take measures to reduce the risk and avoid heavy loss. In this paper, the LNG bunkering vessel operation process is divided into four subprocesses: the loading process, the navigation process, the bunkering process, and the anchoring process. The FSA method is used to identify and evaluate the risks in each process, judge the negligible risk, reasonable and feasible low risk, unacceptable risk, and put forward corresponding safe measures to provide safety guarantees for the operation of LNG bunkering vessels. Through the standardized assessment steps of FSA, a risk model for the LNG bunkering vessel operation process is established, and reasonable suggestions and measures that can effectively control the risk of the LNG bunkering vessel operation process are proposed, the research results of this paper can provide important technical guidance and reference value for the safe operation of LNG bunkering vessel.
随着液化天然气(LNG)燃料动力船舶的增加,LNG 加注船以其优势成为 LNG 加注技术的重要发展方向。然而,LNG 加注船运营风险评估却相对较少。正式安全评估(FSA)是一种新颖的结构化、系统化的海洋工程风险分析方法,通过基于概率论的数据分析,人们可以在事故发生前预见风险,并采取措施降低风险,避免重大损失。本文将 LNG 加注船的操作过程分为四个子过程:装载过程、航行过程、加注过程和锚泊过程。采用 FSA 方法对各流程中的风险进行识别和评估,判断可忽略风险、合理可行的低风险、不可接受风险,并提出相应的安全措施,为 LNG 加注船的运行提供安全保障。通过FSA的标准化评估步骤,建立了LNG加注船作业过程的风险模型,提出了能够有效控制LNG加注船作业过程风险的合理建议和措施,本文的研究成果可为LNG加注船的安全作业提供重要的技术指导和参考价值。
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引用次数: 0
Correction to “A gas detector planning method that considers the area and zone based on the range of influence of chemicals with high vapor pressure” 对 "根据高蒸汽压化学品的影响范围考虑区域和分区的气体探测器规划方法 "的更正
IF 1 4区 工程技术 Q4 ENGINEERING, CHEMICAL Pub Date : 2023-12-08 DOI: 10.1002/prs.12559

Kim M-G, Lee HE, Yoon SJ, Kim JH, Moon K-W. A gas detector planning method that considers the area and zone based on the range of influence of chemicals with high vapor pressure. Process Saf Prog. 2023; 42(3):537–549. doi:10.1002/prs.12478

In the article cited above, Funding Acknowledgment should be updated as follows:

This research was supported by a grant from the National Institute of Environment Research (NIER), funded by the Ministry of Environment (MOE) of the Republic of Korea (NIER-2023-01-01-109).

We apologize for this error.

Kim M-G,Lee HE,Yoon SJ,Kim JH,Moon K-W。根据高蒸汽压化学品的影响范围考虑区域和分区的气体探测器规划方法。Process Saf Prog.2023; 42(3):537-549. doi:10.1002/prs.12478在上面引用的文章中,"资助致谢 "应更新如下:本研究由大韩民国环境部(MOE)资助的国家环境研究所(NIER)提供资助(NIER-2023-01-01-109)。
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引用次数: 1
Development and application of process safety competency framework in agroindustry: A case study 农产品加工业工艺安全能力框架的开发与应用:案例研究
IF 1 4区 工程技术 Q4 ENGINEERING, CHEMICAL Pub Date : 2023-12-07 DOI: 10.1002/prs.12553
Daniela Revez, Gustavo Peron Mendes-Silva
Events in industries have shown that a lack of process safety culture has an important contribution in driving the site to fail. The culture is composed of the values, competencies, and attitudes that drive the organization to success. Thus, competency is a core step in developing a proper foundation to implement process safety management (PSM). In the food industry, the competencies related to process safety are not as well developed as in other types of industries. Although the industry has several information and training programs on process safety, such information needs to be organized into a framework to better direct people and assure standardization and sustainment. This case study presents the proposal for a process safety competency framework with the goal to provide the knowledge and skills necessary for people at different levels in the organization to be successful in managing hazards. The competencies are defined in a way to make the contents assertive with the roles and levels of expertise also using the 70%, 20%, 10% methodology of learning and andragogy. As an initial result of this work, we could verify an increase in the leading process safety event registration, which shows an increase of awareness and culture.
各行各业发生的事件表明,缺乏流程安全文化是导致现场失败的重要原因。文化由价值观、能力和态度组成,是推动组织走向成功的动力。因此,能力是为实施工艺安全管理(PSM)奠定良好基础的核心步骤。在食品行业,与流程安全相关的能力发展不如其他类型的行业完善。虽然该行业有一些关于工艺安全的信息和培训计划,但这些信息需要组织成一个框架,以便更好地指导员工,确保标准化和持续性。本案例研究提出了工艺安全能力框架的建议,目的是为组织内不同级别的人员提供成功管理危险所需的知识和技能。在定义能力时,还采用了 70%、20%、10% 的学习和教育学方法,使其内容与角色和专业水平相适应。作为这项工作的初步成果,我们可以证实主要工艺安全事件登记量的增加,这表明了意识和文化的提高。
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引用次数: 0
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Process Safety Progress
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