Sanghyun Park, Tae Hee Lee, Kwangu Kang, Hyonjeong Noh, Hyungwoo Kim, Jaewon Oh, Kyong-Hwan Kim, Su-gil Cho
{"title":"Risk assessment of solid desiccant dehydration package system using safety integrity level‐based safety instrumented system design approach","authors":"Sanghyun Park, Tae Hee Lee, Kwangu Kang, Hyonjeong Noh, Hyungwoo Kim, Jaewon Oh, Kyong-Hwan Kim, Su-gil Cho","doi":"10.1002/prs.12518","DOIUrl":null,"url":null,"abstract":"The dehydration package system plays an important role in the stable process operation and production of high‐quality liquefied natural gas by removing water, which is essential for natural gas production. However, as this system operates under various conditions with chemicals, there are threats to safety from potential hazards within the system. Therefore, ensuring system safety can significantly impact the reliable operation of process plants. This study aims to assess the risk of the dehydration package system through the safety integrity level (SIL)‐based safety instrumented system (SIS) design approach as suggested in the International Electrotechnical Commission (IEC) 61,508/61511 standards. Fourteen major hazards requiring recommendations were identified for improving safety through the hazard and operability study (HAZOP). The three major hazards were valve malfunction and gas heater/cooler control failure. Twenty‐one safety instrumented functions (SIFs) in all study nodes were suggested as recommendations to improve safety. Using layers of protection analysis (LOPA), the SIL allocation of the 21 SIFs was performed reasonably with process risks and safeguards. The PDS method was adopted for SIS design and verification, with SIL analysis performed for all the SISs. The results showed that SISs of the dehydration package system satisfied the required SILs.","PeriodicalId":20680,"journal":{"name":"Process Safety Progress","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Process Safety Progress","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1002/prs.12518","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The dehydration package system plays an important role in the stable process operation and production of high‐quality liquefied natural gas by removing water, which is essential for natural gas production. However, as this system operates under various conditions with chemicals, there are threats to safety from potential hazards within the system. Therefore, ensuring system safety can significantly impact the reliable operation of process plants. This study aims to assess the risk of the dehydration package system through the safety integrity level (SIL)‐based safety instrumented system (SIS) design approach as suggested in the International Electrotechnical Commission (IEC) 61,508/61511 standards. Fourteen major hazards requiring recommendations were identified for improving safety through the hazard and operability study (HAZOP). The three major hazards were valve malfunction and gas heater/cooler control failure. Twenty‐one safety instrumented functions (SIFs) in all study nodes were suggested as recommendations to improve safety. Using layers of protection analysis (LOPA), the SIL allocation of the 21 SIFs was performed reasonably with process risks and safeguards. The PDS method was adopted for SIS design and verification, with SIL analysis performed for all the SISs. The results showed that SISs of the dehydration package system satisfied the required SILs.
期刊介绍:
Process Safety Progress covers process safety for engineering professionals. It addresses such topics as incident investigations/case histories, hazardous chemicals management, hazardous leaks prevention, risk assessment, process hazards evaluation, industrial hygiene, fire and explosion analysis, preventive maintenance, vapor cloud dispersion, and regulatory compliance, training, education, and other areas in process safety and loss prevention, including emerging concerns like plant and/or process security. Papers from the annual Loss Prevention Symposium and other AIChE safety conferences are automatically considered for publication, but unsolicited papers, particularly those addressing process safety issues in emerging technologies and industries are encouraged and evaluated equally.