Print Email Facebook Twitter Fall pipe ROV Trenching Conversion Title Fall pipe ROV Trenching Conversion Author Brouwers, R.J.P. Contributor Van Rhee, C. (mentor) Keetels, G.H. (mentor) Lommen, S.W. (mentor) Scheers, P. (mentor) Faculty Mechanical, Maritime and Materials Engineering Department Marine and Transport Technology Programme Dredging and Offshore Engineering Date 2013-10-30 Abstract This version of the thesis only covers the non-confidential part of the report. Tideway, as an offshore contractor, is often involved during the construction of an offshore wind farm to carry out cable burial and/or rock placement operations. The process of burying a cable, by means of a trencher, is until now executed by subcontractors. Tideway considers conducting the cable burial proceedings themselves, rather than hire a subcontractor. The goal of this research is to identify whether it is feasible to integrate burial equipment into the fall pipe ROV of the Flintstone, such that Tideway can carry out both burial and rock placement operations, as separate activities, using a single vessel. A literature study is performed in order to produce a qualitative analysis of the existing jet trenching theory, and revealed that both the relationship between jet-production and total momentum flux of a jet system (Vlasblom, 2003) and the mathematical relationships for moving jets (Yeh et al., 2008), can serve as the basis for a computational model. Furthermore, an overview of the main components of an ROV jet trencher is added to the report. A mathematical model is built in order predict the trench performances on the basis of the available hydraulic power. This model contains three different calculations methods, which are based on the collected theory, and provides a range of achievable burial depth versus ROV transit velocity, within which the actual trench performances are expected. Subject post-trenchingjetsRemotely Operated Vehiclecable burial To reference this document use: http://resolver.tudelft.nl/uuid:425de735-8e6e-482d-9e67-138ed353658c Embargo date 2015-10-30 Part of collection Student theses Document type master thesis Rights (c) 2013 Brouwers, R.J.P. Files PDF Repository_version_Ruben_ ... ouwers.pdf 2.81 MB Close viewer /islandora/object/uuid:425de735-8e6e-482d-9e67-138ed353658c/datastream/OBJ/view