Browsing Fakultet for ingeniørvitenskap (IV) by Author "Utne, Ingrid Bouwer"

Now showing items 101-120 of 149

    • Reliability-Centered Maintenance Methodology: Case Study and Improvements 

      Khoshut, Yerbol (Master thesis, 2013)
      CONCLUSIONThe RCM is learned by applying to specific system and during the work several difficulties are discovered. As a solution to these problems there are suggested to use methods such as Concurrent Design and project ...

    • Risikobasert Inspeksjon (RBI): Studie av Statoil Mongstads RBI-program tilknyttet skall-og-rør varmevekslere, for å avdekke mulige forbedringstiltak . 

      Rosnes, Aleksander (Master thesis, 2014)
      I denne oppgaven har det blitt studert hvordan Statoil Mongstad planlegger og gjennomfører Risikobasert Inspeksjon (RBI) på to utvalgte varmevekslere av typen skall- og- rør. Inspeksjoner som utføres på varmevekslerne er ...

    • Risk Analysis and Modelling of Autonomous Marine Systems 

      Thieme, Christoph Alexander (Doctoral theses at NTNU;2018:346, Doctoral thesis, 2018)
      Autonomous marine systems (AMSs) are of increasing interest for the marine and maritime industries. AMSs are engineered, computer-controlled systems that take (to some degree) decisions independent of their human operators. ...

    • Risk Analysis of Autonomous Ships 

      Johansen, Thomas; Utne, Ingrid Bouwer (Chapter, 2020)
      The main purpose of this paper is to address the feasibility of using the System Theoretic Process Analysis (STPA) for risk analysis and quantitative risk modeling of autonomous ships. The paper defines a set of requirements ...

    • Risk assessment of collisions of an autonomous passenger ferry 

      Guo, Chuanqi; Haugen, Stein; Utne, Ingrid Bouwer (Peer reviewed; Journal article, 2021)
      Autonomous transportation is an increasingly popular concept and is gradually becoming a reality. This transformation also changes the way people travel. For example, the autonomous ferry is an emerging alternative for ...

    • Risk Assessment of Ship's Fuel Change-over Process - HAZOP Study on a fuel supply and booster module 

      Kang, Gahyeong (Master thesis, 2015)
      During a ship s sailing, changing over one type of fuel to another is a process that does have risks. However, as more stringent regulation on the sulphur contents of marine fuels has been activated, a ship passing through ...

    • Risk assessment using Hybrid Causal Logic (HCL) modelling - Assessing the collision risk of an unmanned autonomous vessel 

      Pedersen, Remi Brensdal (Master thesis, 2021)
      Autonome skip utvikles for tiden for bruk i offentlige farvann. Et av kravene til autonome skip er at de skal være minst like sikre som konvensjonelle skip. For å oppnå dette er effektiv samhandling og kommunikasjon mellom ...

    • Risk assessments in the Norwegian aquaculture industry: Status and improved practice 

      Holmen, Ingunn Marie; Utne, Ingrid Bouwer; Haugen, Stein (Journal article; Peer reviewed, 2018)
      The Norwegian aquaculture industry has the potential to become the country’s leading ocean industry in the future. More than 99% of the produced biomass is Atlantic salmon and trout. Norwegian fish farming is characterised ...

    • Risk Aware Control of Underwater Snake Robots in Confined Environments 

      Ibrahim, Abdelrahman Sayed Sayed Emam (Master thesis, 2023)
      The growing interest in ocean discovery imposes a need for inspection and intervention in confined and demanding environments. To tackle these demanding environments, articulated underwater robots, such as Eely, with their ...

    • Risk dimensions of fish farming operations and conflicting objectives 

      Holen, Siri Mariane; Utne, Ingrid Bouwer; Yang, Xue (Chapter, 2018)
      Operations at sea-based fish farms can be challenging, and several risk dimensions are of concern during operations. Sea lice represent a challenge for the fish farmers who are required to perform delousing when the ...

    • Risk from cyberattacks on autonomous ships 

      Vinnem, Jan Erik; Utne, Ingrid Bouwer (Chapter, 2018)
      The vulnerability of technological and administrative systems to cyberattacks has been shown to be high in several cases, which has led to different unwanted consequences. Autonomous ships will also be exposed to the threat ...

    • Risk in context to autonomous vessels in transit 

      Sande, Hans (Master thesis, 2021)
      Det overordnede temaet for denne oppgaven er risikoen som blir introdusert når autonome systemer tas i bruk. Oppgaven gir en grundig forklaring til bakgrunnen innen feltet og utviklingen gjennom årene. Oppgaven illustrerer ...

    • Risk management of autonomous marine systems and operations 

      Utne, Ingrid Bouwer; Sørensen, Asgeir Johan; Schjølberg, Ingrid (Chapter; Peer reviewed, 2017)
      Autonomous systems may lead to smarter and more efficient operations, but emerging risks are involved, because of lack of knowledge and operational experience with such systems, and challenges related to verification of ...

    • Risk modeling of autonomous underwater vehicle operation focusing on the human operator 

      Thieme, Christoph Alexander; Utne, Ingrid Bouwer; Schjølberg, Ingrid (Chapter, 2015)
      Autonomous Underwater Vehicles (AUVs) are used in scientific, commercial and military organizations to conduct surveys and follow a preprogrammed mission path through the oceans. If a fault or an unexpected deviation from ...

    • Risk of collision between service vessels and offshore wind turbines 

      Dai, Lijuan; Ehlers, Sören; Rausand, Marvin; Utne, Ingrid Bouwer (Journal article; Peer reviewed, 2013)
      Offshore wind farms are growing in size and are situated farther and farther away from shore. The demand for service visits to transfer personnel and equipment to the wind turbines is increasing, and safe operation of the ...

    • Risk Reduction for Floating Offshore Installations Through Barrier Management 

      Vinnem, Jan Erik; Utne, Ingrid Bouwer (Chapter; Peer reviewed, 2015)
      Marine system accidents have a relatively high frequency worldwide. In Norwegian waters loss of installations has been avoided the last 20 years, but several near-misses and severe incidents confirm that the risk level is ...

    • Risk-Based Control of Autonomous Surface Ship 

      Johansen, Thomas (Doctoral theses at NTNU;2024:174, Doctoral thesis, 2024)
      The last few decades have seen tremendous technological development in the maritime industry. Improvements in navigation systems such as Global Navigation Satellite Systems have reduced measurement error and uncertainty ...

    • Risk-based decision-making support model for offshore dynamic positioning operations 

      Hogenboom, Sandra; Vinnem, Jan Erik; Utne, Ingrid Bouwer; Kongsvik, Trond (Journal article; Peer reviewed, 2021)
      A Dynamic Positioning (DP) system enables vessels and rigs to accurately maintain a predetermined position and heading or track. It enables precise operations under harsh environmental conditions. DP is used for a variety ...

    • Risk-based supervisory control for autonomous ship navigation 

      Blindheim, Simon André Johnsen; Johansen, Tor Arne; Utne, Ingrid Bouwer (Peer reviewed; Journal article, 2023)
      This paper proposes a novel method to transform the results of qualitative risk analysis into a numeric optimal control problem for autonomous ship navigation. Today, making autonomous high-level decisions replacing a crew ...

    • Risk-informed control systems for improved operational performance and decision-making 

      Thieme, Christoph Alexander; Rokseth, Børge; Utne, Ingrid Bouwer (Peer reviewed; Journal article, 2021)
      Autonomous systems, including airborne, land-based, marine, and underwater vehicles, are increasingly present in the world. One important aspect of autonomy is the capability to process information and to make independent ...