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Article

Investigation of the Structural Strength of Existing Blast Walls in Well-Test Areas on Drillships

1
Department of Naval Architecture and Ocean Engineering, Pusan National University, Busan 46241, Korea
2
The Korea Ship and Offshore Research Institute, Pusan National University, Busan 46241, Korea
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2020, 8(8), 583; https://doi.org/10.3390/jmse8080583
Received: 15 June 2020 / Revised: 28 July 2020 / Accepted: 29 July 2020 / Published: 4 August 2020
Blast walls are installed on the topside of offshore structures to reduce the damage from fire and explosion accidents. The blast walls on production platforms such as floating production storage, offloading, and floating production units undergo fire and explosion risk analysis, but information about blast walls on the well-test area of drillship topsides is insufficient even though well tests are performed 30 to 45 times per year. Moreover, current industrial practices of design method are used as simplified elastically design approaches. Therefore, this study investigates the strength characteristic of blast wall on drillship based on the blast load profile from fire and explosion risk analysis results, as well as the ability of the current design scantling of the blast wall to endure the blast pressure during the well test. The maximum plastic strain of the FE results occurs at the bottom connection between the vertical girder and the blast wall plate. Based on the results, several alternative design applications are suggested to reduce the fabrication cost of a blast wall such as differences of stiffened plated structure and corrugated panels, possibility of changing material (mild steel), and reduced plate thickness for application in current industrial practices. View Full-Text
Keywords: drillship; blast wall; explosion; well-test areas; strength evaluation; non-linear structural analysis drillship; blast wall; explosion; well-test areas; strength evaluation; non-linear structural analysis
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MDPI and ACS Style

Jung, B.; Kim, J.H.; Seo, J.K. Investigation of the Structural Strength of Existing Blast Walls in Well-Test Areas on Drillships. J. Mar. Sci. Eng. 2020, 8, 583. https://doi.org/10.3390/jmse8080583

AMA Style

Jung B, Kim JH, Seo JK. Investigation of the Structural Strength of Existing Blast Walls in Well-Test Areas on Drillships. Journal of Marine Science and Engineering. 2020; 8(8):583. https://doi.org/10.3390/jmse8080583

Chicago/Turabian Style

Jung, Byeongkwon, Jeong H. Kim, and Jung K. Seo 2020. "Investigation of the Structural Strength of Existing Blast Walls in Well-Test Areas on Drillships" Journal of Marine Science and Engineering 8, no. 8: 583. https://doi.org/10.3390/jmse8080583

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