Date of Award
Fall 12-2019
Degree Type
Thesis-Restricted
Degree Name
M.S.
Degree Program
Naval Architecture and Marine Engineering
Department
Naval Architecture and Marine Engineering
Major Professor
Vincent Xiaochuan Yu
Second Advisor
Brandon Taravella
Third Advisor
Lothar Birk
Abstract
Nowadays, as oil industry gradually moves towards deep sea fields with water depth more than 1000 meters, they are subjected to several threats which can cause failure of the pipeline, of which the accidentally-dropped objects have become the leading external risk factor for subsea developments. In this thesis, a sample field layout introduced in Det Norske Veritas (DNV) guide rules is selected as the study case with 100 m water depth. Six different groups of dropped objects are used in this paper. The conditional hit probability for long/flat shaped objects will be calculated with the methods from both DNV rules and an in-house tool Dropped Objects Simulator (DROBS). The difference between the results will be discussed. Meanwhile, the sensitivity analysis on mass, collision area , the volume, added mass coefficient and drag coefficient of the objects are calculated.
Recommended Citation
Yu, Hanqi, "Reliability Sensitivity Analysis of Dropped Objects Hitting on the Pipeline at Seabed" (2019). University of New Orleans Theses and Dissertations. 2710.
https://scholarworks.uno.edu/td/2710
Rights
The University of New Orleans and its agents retain the non-exclusive license to archive and make accessible this dissertation or thesis in whole or in part in all forms of media, now or hereafter known. The author retains all other ownership rights to the copyright of the thesis or dissertation.