Dynamic SIL assessment of in-service storage tank nitrogen injection system based on barrier monitoring

IF 7.8 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection Pub Date : 2025-10-15 DOI:10.1016/j.psep.2025.108025

Xiangcan Li , Jinjiang Wang , Zhenqiang Wei , Wencong Ye , Laibin Zhang

{"title":"Dynamic SIL assessment of in-service storage tank nitrogen injection system based on barrier monitoring","authors":"Xiangcan Li , Jinjiang Wang , Zhenqiang Wei , Wencong Ye , Laibin Zhang","doi":"10.1016/j.psep.2025.108025","DOIUrl":null,"url":null,"abstract":"<div><div>As a critical interlocking protective barrier for large petroleum storage tanks, the nitrogen injection system prevents accidents such as leaks and explosions during oil storage and transportation. However, prolonged operation inevitably leads to component degradation. Traditional static Safety Integrity Level (SIL) assessments based on fixed failure rate parameters fail to consider operational state impacts on failure probabilities. Therefore, this paper proposes a dynamic SIL assessment method incorporating barrier monitoring data to enable real-time system performance assessment. The methodology integrates Proportional Hazards Model (PHM) with Broyden Fletcher Goldfarb Shanno (BFGS) algorithm for parameter optimization, combined with Probability of Failure per Hour (PFH) quantification to achieve continuous SIL evaluation during system operation. In a case study on the nitrogen injection system, the proposed dynamic method revealed a time overrun rate of 49.08 % when compared to the traditional static assessment. This finding indicates that the system frequently operated below the required safety levels, necessitating enhanced preventive maintenance.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"203 ","pages":"Article 108025"},"PeriodicalIF":7.8000,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Process Safety and Environmental Protection","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0957582025012923","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

As a critical interlocking protective barrier for large petroleum storage tanks, the nitrogen injection system prevents accidents such as leaks and explosions during oil storage and transportation. However, prolonged operation inevitably leads to component degradation. Traditional static Safety Integrity Level (SIL) assessments based on fixed failure rate parameters fail to consider operational state impacts on failure probabilities. Therefore, this paper proposes a dynamic SIL assessment method incorporating barrier monitoring data to enable real-time system performance assessment. The methodology integrates Proportional Hazards Model (PHM) with Broyden Fletcher Goldfarb Shanno (BFGS) algorithm for parameter optimization, combined with Probability of Failure per Hour (PFH) quantification to achieve continuous SIL evaluation during system operation. In a case study on the nitrogen injection system, the proposed dynamic method revealed a time overrun rate of 49.08 % when compared to the traditional static assessment. This finding indicates that the system frequently operated below the required safety levels, necessitating enhanced preventive maintenance.

查看原文本刊更多论文

基于屏障监测的在役储罐注氮系统SIL动态评价

注氮系统作为大型石油储罐的关键联锁防护屏障，可防止储运过程中发生泄漏、爆炸等事故。然而，长时间的运行不可避免地会导致部件的退化。传统的基于固定故障率参数的静态安全完整性等级评估没有考虑运行状态对失效概率的影响。因此，本文提出了一种结合屏障监测数据的动态SIL评估方法，实现对系统性能的实时评估。该方法将比例风险模型（PHM）与Broyden Fletcher Goldfarb Shanno （BFGS）算法相结合进行参数优化，并结合每小时故障概率（PFH）量化，实现系统运行期间的连续SIL评估。在注氮系统的实例研究中，与传统的静态评估方法相比，提出的动态评估方法的时间超限率为49.08 %。这一发现表明，该系统的操作经常低于所需的安全水平，因此需要加强预防性维护。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Process Safety and Environmental Protection 环境科学-工程：化工

CiteScore

11.40

自引率

15.40%

发文量

929

审稿时长

8.0 months

期刊介绍： The Process Safety and Environmental Protection (PSEP) journal is a leading international publication that focuses on the publication of high-quality, original research papers in the field of engineering, specifically those related to the safety of industrial processes and environmental protection. The journal encourages submissions that present new developments in safety and environmental aspects, particularly those that show how research findings can be applied in process engineering design and practice. PSEP is particularly interested in research that brings fresh perspectives to established engineering principles, identifies unsolved problems, or suggests directions for future research. The journal also values contributions that push the boundaries of traditional engineering and welcomes multidisciplinary papers. PSEP's articles are abstracted and indexed by a range of databases and services, which helps to ensure that the journal's research is accessible and recognized in the academic and professional communities. These databases include ANTE, Chemical Abstracts, Chemical Hazards in Industry, Current Contents, Elsevier Engineering Information database, Pascal Francis, Web of Science, Scopus, Engineering Information Database EnCompass LIT (Elsevier), and INSPEC. This wide coverage facilitates the dissemination of the journal's content to a global audience interested in process safety and environmental engineering.