Now showing items 1902-1921 of 3412

    • M.o.T. Mobilmelker og Torsk 

      Andreassen, John – Halstein; Fanavoll, Trym Persson; Hua, Sandra Hui Min (Bachelor thesis, 2023)
      Dagens situasjon på ODE sitt gjennomstrømninganlegg for torsk på Stadsbygd gjennomføres røkting av fiskekar ved et hevertsystem. På grunn av lave strømningshastigheter i karene fører dette til oppsamling av partikler på ...
    • Machinery vibrations in the Skjold class of MTB's 

      Haga, Kristian (Master thesis, 2011)
      During test and verification of the Norwegian Navy’s fast patrol boat KNM Storm some problems with the lift fan machinery have been experienced. The problem observed is that occasionally, triggered by the firing of the 76 ...
    • Main bearings in large offshore wind turbines: development trends, design and analysis requirements 

      Torsvik, Jone; Nejad, Amir Rasekhi; Pedersen, Eilif (Journal article; Peer reviewed, 2018)
      This paper discusses analysis requirements for design and operation of main bearings in modern multi-megawatt offshore wind turbines, motivated by the industry's search for reliable and cost effective main bearing solutions ...
    • Maintenance of petroleum process plant systems as a source of major accidents? 

      Vinnem, Jan Erik; Haugen, Stein; Okoh, Peter (Journal article; Peer reviewed, 2016)
      The prevention of hydrocarbon leaks is of great importance as they are the most critical precursor events that may lead to major accidents on petroleum facilities. Maintenance of process components on offshore and onshore ...
    • Maintenance Planning and Optimization of Feed System and Camera System used in Norwegian Aquaculture - Using RCM approach to construct a maintenance program 

      Nagarajan, Manikandan (Master thesis, 2017)
      There is an increasing global demand for seafood consumption. Fish farms in Norway has gradually moved to more exposed sites due to competition with other coast-based industries. Sea based aquaculture occupation is one of ...
    • Maintenance strategies for deep sea offshore wind turbines 

      Utne, Ingrid Bouwer (Journal article; Peer reviewed, 2010)
      Purpose – The objective of this paper is to outline a framework that guides the development of sound maintenance strategies and policies for deep‐sea offshore wind turbines. Design/methodology/approach – An important ...
    • Major accident prevention illustrated by hydrocarbon leak case studies: A comparison between Brazilian and Norwegian offshore functional petroleum safety regulatory approaches 

      Almeida, Alex Garcia de; Vinnem, Jan Erik (Journal article; Peer reviewed, 2020)
      Despite laws, regulations, or risk management tools designed to avoid loss events, a hydrocarbon leak (HCL) in an offshore oil and gas platform1 is a major hazard event that reveals failures in risk control. In addition, ...
    • Major Accidents in Exposed Fish Farming - A quantitative collision risk analysis 

      Lunde, Karoline (Master thesis, 2018)
      The Norwegian aquaculture industry has had a large increase in activity over the last years, and the expansion is expected to continue in the years to come. However, a further expansion of traditional fish farming is not ...
    • Major accidents in Norwegian fish farming 

      Holen, Siri Mariane; Yang, Xue; Utne, Ingrid Bouwer; Haugen, Stein (Journal article; Peer reviewed, 2019)
      The Norwegian fish farming industry is experiencing accidents that may have serious consequences for fish-farm operators, the environment, and the farmed fish themselves. Fatalities and serious personnel injuries, mass ...
    • Making sense of speed effects on ice crushing pressure-area relationships in IACS ice-strengthening rules for ships 

      Kim, Ekaterina; Amdahl, Jørgen; Wang, Xintong (Journal article; Peer reviewed, 2021)
      Arctic shipping fleet expansion is anticipated in the future. However, future refinements in the understanding of ice loads on larger ships are needed to achieve a better structural design with reduced steel weight. Published ...
    • Maneuvering and direction stability in restricted waters 

      Frøyen, Vetle Dyrli (Master thesis, 2023)
      Denne avhandlinga kastar lys over den siste utviklinga innan manøvrerbarheit og retningstabilitet i avgrensa farvatn. Nyleg vart dette emnet kjent for offentlegheita då tankskipet Ever Given grunnstøtte diagonalt i ...
    • Maneuvering and Seakeeping of a Single Ship and of Two Ships in Interaction 

      Skejic, Renato (Doktoravhandlinger ved NTNU, 1503-8181; 2008:55, Doctoral thesis, 2008)
      The main objective of this thesis has been to study the maneuvering and seakeeping of two interacting ships. A systematic approach is adopted. First, the maneuvering behaviour of a single ship in regular waves was considered. ...
    • Maneuvering of two Interacting Ships in Calm Water 

      Xiang, Xu; Faltinsen, Odd (Chapter, 2010)
      The maneuvering of two interacting ships in calm water at Froude numbers less than ~0.2 and in water of infinite horizontal extent is studied based on an extended version of the maneuvering model for two ships by Skejic ...
    • Maneuvering of two interacting ships in waves 

      Xiang, Xu (Doktoravhandlinger ved NTNU, 1503-8181; 2012:361, Doctoral thesis, 2012)
      This thesis describes the development of a module based maneuvering prediction system for one ship or two interacting ships in calm water or waves. The work is a continuation and generalization of the previous work of ...
    • Maneuvering with safety guarantees using control barrier functions 

      Marley, Mathias; Skjetne, Roger; Basso, Erlend Andreas; Teel, Andrew R. (Journal article; Peer reviewed, 2021)
      Control barrier functions (CBFs) ensure safety of controlled dynamical systems, by restricting the control inputs to render desired sets forward invariant. In this paper we propose a dynamic guidance scheme for autonomous ...
    • Mapping accident reporting procedures in the maritime transportation sector 

      Hole, Lars Petter (Master thesis, 2010)
      This paper examines the accident reporting procedures in the maritime transportation sector. A parallel study, corresponding to this study, revealed a vast amount of underreporting by several western flag states. This is ...
    • Mapping the Historical Shipwreck Figaro in the High Arctic Using Underwater Sensor-Carrying Robots 

      Mogstad, Aksel Alstad; Ødegård, Øyvind; Nornes, Stein Melvær; Ludvigsen, Martin; Johnsen, Geir; Sørensen, Asgeir Johan; Berge, Jørgen (Peer reviewed; Journal article, 2020)
      In 2007, a possible wreck site was discovered in Trygghamna, Isfjorden, Svalbard by the Norwegian Hydrographic Service. Using (1) a REMUS 100 autonomous underwater vehicle (AUV) equipped with a sidescan sonar (SSS) and (2) ...
    • Marine Autonomous Exploration using a Lidar 

      Ueland, Einar Skiftestad (Master thesis, 2016)
      This thesis reviews the complete design of a control system on a marine surface vessel, capable of autonomous exploration in small-scale marine environments. This involves the development of strategies for map exploration, ...
    • Marine Autonomous Exploration Using a Lidar and SLAM 

      Ueland, Einar Skiftestad; Skjetne, Roger; Dahl, Andreas Reason (Chapter; Peer reviewed, 2017)
      This paper presents the implementation of a 2D-lidar to a model-scale surface vessel, and the design of a control system that makes the vessel able to perform autonomous exploration of a small-scale marine environment by ...
    • Marine Crane Dynamics Lab - Modelling and experimental validation 

      Evang, Thomas Haraldsen (Master thesis, 2017)
      In this thesis, simulation models for a knuckleboom crane and its winch system have been developed. The simulation models have been used to design model based control laws for positioning the orientation of the crane joints ...