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http://dx.doi.org/10.3744/SNAK.2019.56.3.251

A Study on the Design Concept and Simplified Analysis Method in Dropped Object Accidents by Lifting Crane  

Kim, Ul-Nyeon (Hyundai Maritime Research Institute, Hyundai Heavy Industries Co., Ltd.)
Kim, Han-Byul (Hyundai Maritime Research Institute, Hyundai Heavy Industries Co., Ltd.)
Publication Information
Journal of the Society of Naval Architects of Korea / v.56, no.3, 2019 , pp. 251-262 More about this Journal
Abstract
This paper is about design concept and simplified analysis method against dropped object events. The ships and offshore structures are exposed to various types of dropped object accidents such as laydown area struck by drill collar and topside deck hit by food container during their lifetime. Mitigation can be accomplished by proper facility layout and designing structures to safely absorb energy from accidental loads. It shall be designed to avoid loss of life, environmental pollution and loss of assets. Impact loads can lead to structural global collapse of the main structure or punching of a local barrier type structure with potential to escalate directly or indirectly to a global collapse of the structure. This study provides the background information on the issue of dropped object of the shipyard and also focuses on structural assessment of the local individual component such as deck plate, stiffener and web/girder by using simplified analysis method. The results of the simplified analysis method were compared with numerical results using non-linear finite element simulation.
Keywords
Dropped object accidents; Simplified analysis method; Acceptance criteria; Accidental limit state design; Design concept;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Cho, S. R. et al., 2015. Cases and Lessons for Marine Accident, Safe Sea. Special Committee for Marine Accident, Society of Naval Architects of Korea.
2 Det Norske Vertas (DNV), 2010. Structural design against accidental loads, recommended practice, DNV-RP-C204. Norway Oslo: DNV.
3 Det Norske Vertas (DNV), 2013. Determination of structural capacity by non-linear finite element analysis methods, recommended practice. DNV-RP-C208, Norway Oslo: DNV.
4 International Association of Classification Societies (IACS), 2013. Shipbuilding and Repair Quality Standard, IACS Recommendation No. 47(Rev. 7), Table .12. UK London: IACS.
5 Jang, C. H. & Lee, J. S., 2017. Risk assessment of dropped object in offshore engineering through quantified risk analysis. Journal of the Society of Naval Architects of Korea, 54(2), pp.143-150.   DOI
6 LSTC, 2012. LS-DYNA Keyword User's Manual Version 971 R6.1.0, Livermore Software Technology Corp., USA.
7 NORSOK Standard N-004, 2004. Design of steel structures, Annex A.
8 NORSOK Standard R-002, 2008. Lifting equipment.
9 Paik, J.K. & Thayamballi, A.K., 2003. Ultimate limit state design of steel-plated structures. UK Chichester: Wiley.
10 Simulia, 2014. ABAQUS ver. 6.14, Analysis User's Manual, HTML Vol. 1, 2, 3, Hibbitt Karlsson and Sorensen Inc.
11 USFOS AS, 2014, USFOS User's Manual.
12 Veritec, 1988. Design guidance for offshore steel structures exposed to accidental loads, section 4. design guidance for structures exposed to falling object, Veritec Report No. 88-3172.