Now showing items 27-42 of 42

    • Oil Spill Preparedness and Response in the Arctic. The effect of low temperature on oil spill response operations in the Arctic with respect to overall equipment effectiveness 

      Rolandsen, Markus Helfjord (Master thesis; Mastergradsoppgave, 2018-06-02)
      Effectiveness is an important term in oil spill response operations. Literature often relate to the level of effectiveness connected to either mechanical containment and recovery, in-situ burning or chemical dispersant application. The term effectiveness in oil spill response operations can be related to existing theory and the perspective of Overall Equipment Effectiveness (OEE). The perspective ...
    • Optimal Ordering Strategy of Perishable Products 

      Bjørvik, Simon Sagelv (Master thesis; Mastergradsoppgave, 2016-07-13)
      It is challenging to plan for the future, especially if there are uncertainties. In the retail store business making the right orders at the right time might have a severe impact on the profit of the store. Maintaining the right inventory is a part of this. With fluctuations in price and competition, having the best deals, and being at the whims of the customers making sure that the store has the ...
    • Optimization of maritime operations in Arctic. Rating of improvement of weather routing/decision support systems for maritime operations in the Arctic region 

      Johansen, Kåre (Master thesis; Mastergradsoppgave, 2013-05-15)
      Abstract The decreased ice extent caused by increased air and sea temperatures has led to a growing interest in the Arctic waters. There are different maritime industries that have plans to expand northwards for various reasons. First of all there are different developments in oil and gas industry in Barents, Kara, Greenland, Arctic sea around the coast of Canada and Alaska. New ship trading ...
    • Real time estimation of measurement in annular pressure and their relationship with pore and fracture pressure profile 

      Hassan, Syed Yasir (Master thesis; Mastergradsoppgave, 2016-06-01)
      The drilling industry still faces the challenge of acquiring accurate and viable precision of subsurface pressure data. To address this, drilling industry is keen to establish accurate and reliable measurement of pressure in wellbore and to estimate the pore pressure and fracture pressure profile with utmost precision. In any drilling operation, it is important to maintain the annulus pressure ...
    • Risk of Ship Collision in the Barents Sea in 2030 

      Balto, Jan Børre Hansen (Master thesis; Mastergradsoppgave, 2014-06-01)
      This thesis evaluates the risk of ship collisions in the Barents Sea in 2030 between three future scenarios; Minimum, Basis and Maximum Scenario. IWRAP Mk2 program is utilized to make the calculations. Automatic Identification System (AIS) data of 2013 is used to parameterize current traffic density, while the increased traffic in the different scenarios is derived from an analysis of multiple ...
    • Risk-Based Spare Part Planning. Uncertainties and Operational Conditions 

      Ayele, Yonas Zewdu (Master thesis; Mastergradsoppgave, 2013-03-20)
      Estimates which indicate a large share of the world’s undiscovered oil and gas resources is to be found in the Arctic areas and the increasing demand for energy are important reasons for the growing interest in the High North region. As the offshore industry expands into the High North, system failures associated with these projects is expected to increase significantly. Hence, the quest for ...
    • Seismic Surveys in Ice-Covered Waters 

      Klavenes, Jørgen Sørensen (Master thesis; Mastergradsoppgave, 2013-06-03)
      The master’s thesis ‘Seismic surveys in ice-covered waters’ describes several methods within the maritime seismic industry to acquire data concerning the Earth’s strata. It is the objective of this thesis to present a viable solution enabling the seismic industry to perform surveys in ice influenced waters. The hardware conducted for conventional seismic surveys are introduced and explained. ...
    • Sikkerhetsvurdering av Tromsøysundtunnelen 

      Jensen, Sondre Finjord (Master thesis; Mastergradsoppgave, 2016-05-31)
      Veitunneler er statistisk sett en av de sikreste delene av veinettet, med svært få hendelser sammenlignet med det øvrige nettet. Det er derimot spesielle forhold som i vesentlig grad avviker fra veinettet for øvrig med tanke på brann og rømning. De ulike sikkerhetssystemene i tunnelen er med på å hindre at hendelser oppstår, og redusere konsekvensene hvis ulykken først er ute. Gjennom oppgaven ...
    • Simplified Representation of Degradation, Inspection and Maintenance in a Strategic Decision Support Tool for Offshore Wind Operation and Maintenance 

      Hussain, Azeem (Master thesis; Mastergradsoppgave, 2016-08-09)
      The global demand for energy is increasing in the current scenario of industrial development and offshore wind energy has a great potential to become a key player specifically in Europe’s renewable energy future. Naturally the flow of wind in offshore environments is more consistent and also the average wind velocity is higher than onshore. However, the cost of electricity generated from offshore ...
    • Study of Refrigerants for Heat Pumps in Colder Climate 

      Eriksen, Nils Eivind (Master thesis; Mastergradsoppgave, 2014-06-01)
      The aim for the thesis is to look at the performance of natural refrigerants in heat pumps while operating in a colder climate. The advantage of using natural refrigerants is that they have significantly lower global warming potential (GWP) in comparison to the synthetic refrigerants i.e. hydro fluorocarbons (HFC) and hydro chlorofluorocarbons (HCFC). Natural refrigerants are becoming common to use ...
    • Thermal and Mechanical Properties of SK One Component Polyurethane (SKOCP). Determining the Thermal and Mechanical properties of SKOCP in Colder Conditions 

      Eidesen, Hans-Kristian Norum (Master thesis; Mastergradsoppgave, 2017-05-30)
      Polymers have an extreme wide range of potential applications. From artificial heart valves, computer hardware, coating materials, noise damping materials and so on. Polyurethane is one of the such materials with a broad range of applications. A few such applications and properties are, but not limited to, treatment of leakage of an expansion joint, abrasion resistance, anti-freezing performance and ...
    • Thermography and tensile tests of steel samples. Study of material properties and internal friction effects 

      Stange, Even (Master thesis; Mastergradsoppgave, 2018-06-01)
      The thesis presents analysis of material properties and internal effects in steel samples, with varying temperatures. Uniaxial tensile tests were conducted in both room temperature and low temperatures, to generate graphical measures of the mechanical properties. The steel samples were monitored with thermography throughout the course of the tensile tests, to investigate the heat generation associated ...
    • Upgrading technologies for biogas production plants. Overview and life cycle cost analysis of available technologies 

      Brendeløkken, Hanne Wasmuth (Master thesis; Mastergradsoppgave, 2016-06-01)
      An increased focus on waste management has emerged during the last decade. Renewable energy, efficient energy usage and cuts in greenhouse gas emissions are highly prioritized by the EU. The International Energy Agency (IEA) and the World Energy Council estimates that the global energy demand will grow within the next decades. The continuously increasing energy demand, contributes to development of ...
    • Utfordringer ved snøkrabbefangst med hensyn på risiko ved operasjoner på sjøen. Kartlegging av risiko og risikoreduserende tiltak 

      Jørgensen, Andreas (Master thesis; Mastergradsoppgave, 2016-05-31)
      Sentrale organer innenfor norsk fiskeri har de siste årene kartlagt spredning av arten ”Chionoecetes Opilio”, snøkrabbe, til norske farvann. Bestanden av snøkrabbe kommer fra russisk side av delelinjen i Barentshavet, og sprer seg vestover til norske territorialfarvann. Norsk havforskningsinstitutt mener at krabben kommer til å etablere seg i Svalbardsonen de kommende år. Krabben anses å være ...
    • Well Testing in the Barents Sea. Risk Analysis; Methods and Procedures 

      Mathisen, Espen Heiskel (Master thesis; Mastergradsoppgave, 2014-06-01)
      The thesis is done in co-operation with DNV GL Harstad and Schlumberger. DNV GL has provided access to historical accidents data, by using technical documents. Schlumberger has provided technical information about well testing and hazards related to such an event, and an internal risk analysis document, which they use in their operations. This document is modified to suit, and account, for arctic ...
    • Wind Chill Effect & Thermal Insulation. Study of Wind Chill Effect and Thermal Insulation using Infrared Imaging 

      Ahmad, Tanveer (Master thesis; Mastergradsoppgave, 2017-05-15)
      Wind chill factor is explained as the cooling sensation due to the exposure of wind temperature environment. The wind chill factor depends on air temperature, wind velocity, and humidity. Wind chill poses serious health risks. Various wind chill index models are given in the literature. In order to understand the wind chill effect, it is important to understand the phenomenon of heat transfer. There ...