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http://dx.doi.org/10.21289/KSIC.2020.23.4.569

A Case Study on the Risk Assessment for Offshore Plant Solid Desiccant Dehydration Package by using HAZOP  

Noh, Hyonjeong (Offshore Industries R&BD Center, KRISO)
Park, SangHyun (Department of Automotive Engineering, Hanyang University)
Cho, Su-gil (Offshore Industries R&BD Center, KRISO)
Kang, Kwangu (Offshore Industries R&BD Center, KRISO)
Kim, Hyungwoo (Offshore Industries R&BD Center, KRISO)
Publication Information
Journal of the Korean Society of Industry Convergence / v.23, no.4_2, 2020 , pp. 569-581 More about this Journal
Abstract
Since the dehydration packages of offshore plant deal directly with oil & gas, there is a great risk of fire and explosion during operation. Therefore, this study performed risk assessment through HAZard & OPerability (HAZOP) for solid desiccant dehydration package that can remove water component of natural gas in offshore floating liquefied natural gas (LNG) production facilities below 0.1 ppmv. The risk matrix was determined by dividing the likelihood and the severity into five levels separately by asset, life, environment and reputation. The piping & instrumentation diagram (P&ID) of the dehydration package was divided into 9 nodes. Total 22 deviations were assessed in consideration of the adsorption and desorption conversion cycle. A risk assessment based on deviations revealed 14 major hazards. Three representative types of hazards were open/close failure of the control valve, control failure of the heater, and abnormal operation of the regeneration gas cooler. Finally, we proposed the installation of additional safety devices to improve safety against these major hazards, such as safety instrumented functions, alarms, etc.
Keywords
Offshore Plant; Dehydration; HAZOP; Risk Assessment; SIS;
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1 A.J. Kidnay, W.R. Parrish, and D.G. McCartney, "Fundamentals of natural gas processing. Second Edition", 6000 Broken Sound Parkway NW, Suite 300: CRC Press, Taylor & Francis Group, LLC. (2011).
2 S.Mokhatab, W.A. Poe, and J.Y. Mak, "Chapter 7 - Natural Gas Treating, in Handbook of Natural Gas Transmission and Processing (Fourth Edition)", Gulf Professional Publishing. pp. 231-269. (2019).
3 N.A. Darwish and N. Hilal, "Sensitivity analysis and faults diagnosis using artificial neural networks in natural gas TEG-dehydration plants", Chemical Engineering Journal, Vol. 137, No. 2, pp. 189-197, (2008).   DOI
4 A. Karimi and M.A. Abdi, "Selective dehydration of high-pressure natural gas using supersonic nozzles", Chemical Engineering and Processing: Process Intensification, Vol. 48, No. 1, pp. 560-568, (2009).   DOI
5 W. Liu et al., "Assessment of hydrate blockage risk in long-distance natural gas transmission pipelines", Journal of Natural Gas Science and Engineering, Vol. 60, pp. 256-270, (2018).   DOI
6 M.G.R.S. Santos et al., "Natural gas dehydration by molecular sieve in offshore plants: Impact of increasing carbon dioxide content", Energy Conversion and Management, Vol. 149, pp. 760-773, (2017).   DOI
7 H.A.A. Farag, et al., "Natural gas dehydration by desiccant materials", Alexandria Engineering Journal, Vol.50, No.4, pp. 431-439, (2011).   DOI
8 T. Acheampong and R. Akumperigya, "Offshore risk regulation: A comparative analysis of regulatory framework in Ghana, the United K ingdom and N orway", Energy Policy, Vol. 113, pp. 701-710, (2018).   DOI
9 J. Wu and M. Lind, "Management of System Complexity in HAZOP for the Oil & Gas Industry", IFAC-PapersOnLine, Vol. 51, No. 8, pp. 211-216, (2018).   DOI
10 R.E. Melchers, "On the ALARP approach to risk management", Reliability Engineering & System Safety, Vol. 71, No. 2, pp. 201-208, (2001).   DOI
11 D.N. Tchiehe and F. Gauthier, "Classification of risk acceptability and risk tolerability factors in occupational health and safety", Safety Science, Vol. 92, pp. 138-147, (2017).   DOI
12 M. Rausand, "Risk Assessment: Theory, Methods, and Applications", Wiley, (2013).
13 M. Khalkhali, A. Ghorbani, and B. Bayati, "Study of adsorption and diffusion of methyl mercaptan and methane on FAU zeolite using molecular simulation", Polyhedron, Vol. 171, pp. 403-410, (2019).   DOI
14 M. Stewart and K. Arnold, "Gas Dehydration Field Manual", Gulf Professional Publishing, Elsevier Science, (2011).