Selection of failure frequency and its impact on risk assessment – A case study from plot plan optimisation |
| |
| Institution: | 1. Maersk Oil GmbH, Building 1, Microdistrict 21, Aktau 130000, Kazakhstan;2. DNV GL Kazakhstan, Moskva Business Centre, 16th Floor, Office #3, Dostyk 18, Astana 010000, Kazakhstan;1. School of Chemical Machinery and Safety Engineering, Dalian University of Technology, Dalian 116024, China;2. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230027, China;3. Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan;1. Grupo de Diseño de Productos y Procesos (GDPP), Department of Chemical Engineering, Universidad de los Andes, Bogotá, Colombia;2. School of Management, Universidad de los Andes, Bogotá, Colombia;3. Centro para la Optimización y Probabilidad Aplicada (COPA), Department of Industrial Engineering, Universidad de los Andes, Bogotá, Colombia;1. London South Bank University Explosion & Fire Research Group, 103 Borough Rd, SE1 0AA, UK;2. Honeywell Aerospace, Bunford Ln, Yeovil, BA20, UK;1. Istituto di Ricerche sulla Combustione, CNR, Piazzale Tecchio 80, 80125 Napoli, IT, Italy;2. Dipartmento di Ingegneria Chimica, Mineraria e delle Tecnologie Ambientali, Alma Mater Studiorum, Università di Bologna, Via Terracini 28, 40131 Bologna, IT, Italy;3. Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, IT, Italy |
| |
| Abstract: | Facility Siting is an important phase of project development. A critical stage is plot plan optimisation, where significant potential hazards are eliminated due to equipment spacing. In addition to ensuring appropriate compliance with minimum spacing requirements, occupied building studies to achieve compliance with the requirements of API 752 and API 753 could also be undertaken to optimise safety outcomes. The studies are done in three stages, where the first stage is hazard identification, second stage is consequence assessment and the third stage is risk assessment. Third stage assessments are only carried, if the consequence based siting recommendations are not practical to implement.This paper presents the challenges in estimating risk due to process hazards with a focus on selecting right event likelihood data. A comparison is presented on the variation in predicted risk levels based on equipment failure rates and leak frequencies.Case study of a plot plan optimisation study is undertaken with DNVGL Phast Risk and the variation in risk levels up to two orders of magnitude are recorded. Challenges such as adaption of data for local conditions, consistent definitions of failure, sample size of data, applicability of data play a significant role in identifying and correctly quantifying the risk levels. Such challenges and its impact on risk quantification are presented in this paper as well as its impact on facility siting. |
| |
| Keywords: | Facility siting Risk assessment QRA Failure frequency |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
