Now showing items 5-24 of 42

    • 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 ...
    • CFD modelling of pollutant transport. Use of ANSYS Workbench® simulating emissions to air from vessel at Port of Breivika. 

      Madsen, Synne Karoline (Master thesis; Mastergradsoppgave, 2019-05-31)
      Historically, the Port of Tromsø is well known as the final port before entering the Arctic Sea. Nowadays, there is a noticeable traffic consisting of cruise vessels visiting Port of Tromsø before heading against the Arctic. The vessels transport passengers expecting clean air, midnight sun, northern lights, snow and ice; - and a clean environment. Environmental considerations and air pollution ...
    • The Characteristic of Cold Metal Transfer (CMT) and its application For Cladding 

      Edoh Imoudu, Nelson (Master thesis; Mastergradsoppgave, 2017-06-01)
      Corrosion and wear has been a major challenge in most of our industries. CMT process has been selected as a weld technique because of its low heat inputs that makes it a promising technique for industrial application. However, the aim of this thesis is to study the competence of CMT welding process in cladding of mild stainless steel and performing a qualitative fault tree analysis. Furthermore, the ...
    • 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 ...
    • 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, ...
    • The Cruise Industry and the Polar Code. Implementing the Polar Code. 

      Kristiansen, Bendik Skoglund (Master thesis; Mastergradsoppgave, 2019-05-31)
      The mandatory Polar Code is now set into force with strengthened requirements for vessels operating in polar waters. There are many challenges, and the polar environment adds an increased risk level. The preventive actions towards mitigating risks are more important due to the harsh environment, long distances and limited options for assistant rescue. Most accidents and incidents have pre-occurring ...
    • 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 ...
    • The effect of human factors on safety related to barrier management 

      Bakkli, Anders; Tennfjord, Malene (Master thesis; Mastergradsoppgave, 2019-05-31)
      The aim of this thesis is to establish information on barrier elements where human errors take place and to establish proactive measures to eliminate these errors. The three main objectives for this project is to review the current safety and barrier management approach in Equinor, identify to what degree human factors have an impact on safety and make recommendations for improvements on safety and ...
    • 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 ...
    • 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, ...
    • Feasibility study of Unmanned Aerial Vehicles (UAV) application for ultrasonic Non-Destructive Testing (NDT) of Wind Turbine Rotor Blades. Preliminary experiments of handheld and UAV utrasonic testing on glass fibre laminate 

      Skaga, Simon Kleppevik (Master thesis; Mastergradsoppgave, 2017-05-31)
      In this thesis, we have conducted a feasibility study on UAV application for ultrasonic pulsed non-destructive testing of wind turbine rotor blades. Due to the high initial cost of wind turbines, and their decreasing availability due to increasing size and offshore locations, it is imperative to properly maintain these structures over their 10-30-year lifetime. Operation and maintenance costs can ...
    • Finite element analysis of materials for aquaculture net cages. FEA of materials for aquaculture net cages using ANSYS Workbench 

      Myrli, Odd Einar Lockertsen (Master thesis; Mastergradsoppgave, 2017-06-20)
      The number of good sites in less exposed locations for aquaculture farming is limited. Trends are now that the fish cages are increasing in both width and depth as well as more weather-exposed locations are taken into use. As the net cages continues to increase in size, so does the material costs. The design of the sea cages should be modified for safe and reliable use in remote offshore locations. ...
    • Friction tests on polyurethane and concrete. Rolling friction tests and sliding friction tests on anti-abrasion polyurethane, anti-seepage polyurethane and concrete. 

      Hansen, Kristian (Master thesis; Mastergradsoppgave, 2018-06-01)
      The climate in arctic areas of the world is a challenge for airports. Snow and ice accumulates on the runways, forcing airports to close for snow clearing. Pilots need to know that the friction is at a respectable level before they land, and may have to return if not. This thesis looked at a polymer called polyurethane, and if this material could be used as a new runway material, considering both ...
    • 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 ...
    • Icing Effects on Power Lines and Anti-icing and De-icing Methods 

      Solangi, Ali Raza (Master thesis; Mastergradsoppgave, 2018-05-30)
      Icing on power lines may lead to compromise safety and reliability of electric supply network. Prolong icing can lead to power breakdown and collapse of towers. Since power transmission lines are mostly overhead and could face the direct impact of icing, and it is one of the main challenges faced by power distribution companies in cold regions. When the ice accretion crosses the safety limit then ...
    • Identification of Challenges and Hazards associated with Cruise Traffic and Evacuation in the Arctic 

      Dalsand, Raymond; Nese, Tord (Master thesis; Mastergradsoppgave, 2016-06-06)
      Arctic cruise tourism is gaining in popularity. There is a need to better understand hazards that are connected with cruise traffic and evacuation in the Arctic. The Polar Code tries to enhance the safety of persons travelling in polar waters by giving functional requirements to life-saving appliances. However, it is unclear what is needed to achieve the required functionality, and how existing ...
    • Improving mechanical grip on winter tires. Finite element analysis on pressure profile of airless tire compared to conventional tire using ANSYS workbench 

      Ludvigsen, Sondre (Master thesis; Mastergradsoppgave, 2017-06-22)
      The harsh climate of the arctic has always been one of the most difficult areas to drive cars in. The severe loss in traction due to snow and icing on the roads, has led to an increased risk of collisions. The winter tires for cars has developed through the years after their introduction in the 1930’s. There have been three revolutionary changes made since then; implement of studs, changing in tread ...
    • Matsikkerhet i Norge. Er forsyningsberedskapen tilstrekkelig? 

      Steien, Terese (Master thesis; Mastergradsoppgave, 2016-06-01)
      Tittelen på avhandlingen lyder slik: ‘Matsikkerhet i Norge – er forsyningsberedskapen tilstrekkelig?’ Denne avhandlingen omhandler matsikkerhet og en risiko- og sårbarhetsanalyse. Målet var å finne ut hvilken matsikkerhet som er i landet, hva som påvirker den og om forsyningsberedskapen er tilstrekkelig ved en eventuell krise. Målet var også å utføre en risiko- og sårbarhetsanalyse for å se på ...
    • Mechanical and impact tests of CFRP. An experimental and numerical study of the mechanical properties of CFRP samples with varying temperatures, using Four-point bending, Charpy and Air gun tests 

      Strand, Cathrine Høgmo (Master thesis; Mastergradsoppgave, 2017-06-01)
      With increasing popularity of carbon fiber reinforced polymer (CFRP) over time, the need of research in the field increases along with it. The aim of this project was to study the mechanical properties of CFRP with varying temperature settings. A four-point bending test was performed to find the deflection of CFRP in room temperature, and after being exposed to cold temperature. A numerical test was ...
    • 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 ...