Now showing items 1-20 of 42

    • Application of reliability and maintainability analysis in the Svea coal mine 

      Furuly, Simon Andre (Master thesis; Mastergradsoppgave, 2012-05)
      The field of reliability engineering is developing, as needed in the industry. This is especially in arctic regions which now are being explored and vast recourses and opportunities are found. The reliability research is limited in the arctic, little knowledge is known about operating in the arctic regions. This research study will analyze equipment in an arctic region, Svalbard. It calculates the ...
    • Empirical and dynamical modeling of debris flow events close to Longyearbyen and Svea, Svalbard 

      Engelke, Christian (Master thesis; Mastergradsoppgave, 2012-06-30)
      Debris flows are a mountain slope hazard relatively well studied in densely populated mountainous regions, while few investigations have been done in Arctic permafrost regions. In order to get a better understanding of the processes involved in such an envi-ronment, this work focused on debris flow hazards in the mountains close to Longyear-byen and Svea on Svalbard, Norway, situated at 78°N. A ...
    • 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 ...
    • 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 ...
    • Barrier management - Influence from the human factor in the arctic 

      Madsen, Ole Kristian (Master thesis; Mastergradsoppgave, 2013-05-31)
      In recent years several serious near-misses with major hazard accident potential have happened on the Norwegian Continental Shelf, many of them hydrocarbon leaks. Research has shown that many of these are caused by manual intervention. Despite this fact, current focus in QRAs and have been for a long time, are on technical systems. This is despite recent trends showing no decline in risk level. A ...
    • Environmental risk influencing factors for petroleum drilling in the western Barents Sea 

      Sætrum, Tina (Master thesis; Mastergradsoppgave, 2013-05-31)
      Offshore petroleum drilling in harsh and cold environment, like in the Barents Sea, can be challenging and risky due to the prevailing weather condition. How the physical environment affects systems, components, and working environment has to be enlightened in order to operate safely. The vulnerable environment, remoteness, and possible outcomes if an accident occurs are of great concern. The society, ...
    • CO2 Absorption and Desorption Simulation with Aspen HYSYS 

      Birkelund, Even Solnes (Master thesis; Mastergradsoppgave, 2013-06-01)
      The last years it has been an increasing global interest to reduce emissions of greenhouse gases to the atmosphere. One of the most important greenhouse gases is CO2. To reduce CO2 emissions carbon capture and storage (CCS) is the most realistic approach. With today’s technology absorption by an amine solution is the most developed and applicable method for post-combustion CO2 capture. But this ...
    • 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. ...
    • Criticality Analysis of Platform Supply Vessel (PSV) 

      Azad, Marziyeh Bagheri (Master thesis; Mastergradsoppgave, 2014-06-01)
      The oil and gas industry has expanded consistently from land operations to inland waterways and then to offshore. A platform supply vessel (PSV) is an important element of offshore supply logistics. Hence, its acceptable level of availability performance is highly demanded. Identification of critical components provides essential information for improving and optimizing the maintenance management, ...
    • 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 ...
    • 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 ...
    • 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 ...
    • Modelling of Marine Icing with Close Range Photogrammetry 

      Haukebø, Asbjørn Risholm (Master thesis; Mastergradsoppgave, 2015-05-01)
      Installations and vessels operating in the high North in the winter season are likely to be subjected to marine Icing. To date there are no sensor technology available to accurately measure the total weight or volume of the ice. Photogrammetry is a universal 3-D measuring technique applied in a wide range of interdisciplinary fields. Agisoft PhotoScan is a photogrammetry software utilizing Structure ...
    • Drilling waste minimization in the Barents Sea 

      Zaki, Rezgar (Master thesis; Mastergradsoppgave, 2015-05-19)
      With the increasing demand for energy over recent decades, the Arctic region has become an interesting area for future oil and gas exploration and development. The Barents Sea has the most western position among the Arctic seas surrounding the coast of Western Russia and Northern Norway. In the recent years several oil and gas discoveries done in this area and the number of wells is steadily ...
    • 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 ...
    • 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 ...
    • Assessing the Risk of Escape from Marine Fish Farms. Improving Data Collection Strategies and Development of Risk Indicators 

      Høyli, Randulf (Master thesis; Mastergradsoppgave, 2016-05-31)
      Marine fish farming is one of Norway’s largest industries and exports. The industry is in rapid development and secures employment for several thousand people, all along the Norwegian coastline. Fish farming is regarded as a relative sustainable method for food production. However, the industry is still prone to certain challenges and problems. Escape of fish, for instance, is one of the industry’s ...
    • A fuzzy logic-possibilistic methodology for risk-based inspection (RBI) planning of oil and gas piping subjected to microbiologically Influenced corrosion (MIC) 

      Pokhrel, Marshal (Master thesis; Mastergradsoppgave, 2016-05-31)
      The oil and gas installations are associated with risk due to different degradation mechanisms. Microbial Influenced Corrosion, commonly known as MIC, is one of them. The failures caused by MIC may have significant impacts on health, safety and environment (HSE). Therefore, to avoid failures regular inspection of the assets and maintenance plans need to be executed. With this on mind, engineers try ...
    • Analysis of potential critical equipment and technical system on a modern PSV. Recommending a method for Troms Offshore Management AS 

      Løvmo, Signy Anita (Master thesis; Mastergradsoppgave, 2016-06-01)
      This thesis is a part of a master’s degree in Technology and Safety in the High North at the University of Tromsø- The Arctic University of Norway. The thesis has been written during the spring semester of 2016. Safety is a large part of maritime operations and all tools to improve safety and reliability is considered. Even in these days when economy in the oil related industry is worse than ever. ...
    • 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 ...