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Failure Analysis of Topside Facilities on Oil/Gas Platforms in the Bohai Sea

1
Faculty of Vehicle Engineering & Mechanics, Dalian University of Technology, Dalian 116024, China
2
School of Ocean Science & Technology, Dalian University of Technology, Panjin 124221, China
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2019, 7(4), 86; https://doi.org/10.3390/jmse7040086
Received: 22 February 2019 / Revised: 19 March 2019 / Accepted: 25 March 2019 / Published: 27 March 2019
(This article belongs to the Special Issue Marine Structures)
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Abstract

The jacket platform in the Bohai Sea oilfield is an important engineering development, offering design alternatives in this economically important region. However, ice-induced vibration in cold areas threatens the safety and operation of these platforms. On two occasions, intense ice-induced vibrations triggered the rupture of a well’s blow down pipeline, loosening the flanges on the Bohai platform, and leading to the ejection of high-pressure natural gas. Subsequent mechanical analysis of the failed parts helped define the mechanism of failure and identified the failure criteria, based on a prototype structure monitoring system. The analysis revealed that the deck’s inertial force, which resulted in ice-induced steady-state vibration, was the major cause of the accident. Three fixed cones were thus installed on the platform the following winter, effectively reducing the vibrations. View Full-Text
Keywords: jacket platform; ice-induced vibration; failure mechanism; ice-resistant cone jacket platform; ice-induced vibration; failure mechanism; ice-resistant cone
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Yu, S.; Zhang, D.; Yue, Q. Failure Analysis of Topside Facilities on Oil/Gas Platforms in the Bohai Sea. J. Mar. Sci. Eng. 2019, 7, 86.

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