Browsing Vitenskapelige publikasjoner (TN-IMBM) by Issue Date
Now showing items 1-20 of 455
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An integrated qualitative trend analysis approach to identify process abnormalities: A case of oil export pumps in an offshore oil and gas production facility.
(Journal article; Peer reviewed, 2009)Oil & gas production can be largely benefited by minimizing unwanted production losses. This can be done by effective identification of system anomalies and faults. In standard control systems these abnormalities can be ... -
Evolution of Scientific Management Towards Performance Measurement and Managing Systems for Sustainable Performance in Industrial Assets : Philosophical Point of View
(Journal article, 2009-01)Even though remarkable progress has been made over recent years in the design of performance measurement frameworks and systems, many companies are still primarily relying on traditional financial performance measures. ... -
Technical integrity management : measuring HSE awareness using AHP in selecting a maintenance strategy
(Journal article; Peer reviewed, 2010)Global competition, varying oil and gas prices, ever more stringent environmental requirements, as well as increasing energy demands have caused changes in management approaches, product and process technologies, stakeholder ... -
Managing hidden system threats for higher production regularity using intelligent technological solutions: A case study
(Journal article; Peer reviewed, 2010)Identification and interpretation of hidden system threats on complex oil and gas production platforms has always been a challenge. These threats may gradually develop into failures/faults resulting in system shutdowns or ... -
A Decision Model for Executing Plant Strategy: Maintaining the Technical Integrity of Petroleum Flowlines
(Journal article; Peer reviewed, 2012-05)The ‘strategic’ management of technical integrity has become a high profile subject matter over recent years within inspection and maintenance of assets in the process industry. The assets such as production and ... -
Spare Part Transportation Management in the High North
(Journal article, 2013)The demanding physical conditions of the Arctic, remote location, and uncertainty regarding the travel time can both heighten the challenges related to transportation of spare part in the region. Managing to get the ... -
Wave Influenced Wind and the Effect on Offshore Wind Turbine Performance
(Journal article; Peer reviewed, 2014)In this paper the effect of wave influenced wind on offshore wind turbines is studied numerically. The wave is seen as a dynamical roughness that influences the wind flow and hence the wind turbine performance. An actuator ... -
Comparing different CFD wind turbine modelling approaches with wind tunnel measurements
(Peer reviewed; Journal article, 2014)The performance of a model wind turbine is simulated with three different CFD methods: actuator disk, actuator line and a fully resolved rotor. The simulations are compared with each other and with measurements from a wind ... -
Cascade analysis of a floating wind turbine rotor
(Journal article; Peer reviewed, 2014)Mounting a wind turbine on a floating foundation introduces more complexity to the aerodynamic loading. The floater motion contains a wide range of frequencies. To study some of the basic dynamic load effect on the blades ... -
Challenges and opportunities in tags and tag-related technical information management
(Masteroppgave/UIS-TN-IKM/2014;, Master thesis, 2014-06-16)The fact that many giant Norwegian oil and gas fields are in decline, and that these fields have reached their tail phase urges Oil and Gas (O&G) companies to focus on maintenance and modification projects to extend the ... -
Assessment of wind conditions at a fjord inlet by complementary use of sonic anemometers and lidars
(Journal article; Peer reviewed, 2015)Wind velocity measurement devices based on the remote optical sensing, lidars, are extensively applied in wind energy research and wind farm operation. The present paper demonstrates the relevance and potential of lidar ... -
Barents Sea Oil and Gas 2025: Three Scenarios
(Chapter, 2015)What are some of the possible futures for Barents Sea oil and gas? This chapter draws upon the key trends and issues covered by the book’s thematic chapters and presents three scenarios on the prospects for Norwegian–Russian ... -
Vibration measurement-based simple technique for damage detection of truss bridges: A case study.
(Journal article; Peer reviewed, 2015-08)The bridges experience increasing traffic volume and weight, deteriorating of components and large number of stress cycles. Therefore, assessment of the current condition of steel railway bridges becomes necessary. Most ... -
Wind coherence measurement by a single pulsed Doppler wind lidar
(Journal article; Peer reviewed, 2016)A single pulsed Doppler wind lidar, deployed at the FINO1 platform in the North Sea, has been used to monitor the lateral and vertical coherence of the along-wind component. To maximize the sampling frequency of the ... -
Methods for analysing wave slamming loads on truss structures used in offshore wind applications based on experimental data
(Peer reviewed; Journal article, 2016)Offshore wind turbines installed in shallow water regions are subjected to highly varying hydrodynamic loads, also from plunging breaking waves. Many investigations have been made regarding the wave slamming forces acting ... -
Application of short-range dual-Doppler lidars to evaluate the coherence of turbulence
(Peer reviewed; Journal article, 2016)Two synchronized continuous wave scanning lidars are used to study the coherence of the along-wind and across-wind velocity components. The goal is to evaluate the potential of the lidar technology for application in wind ... -
Fatigue reliability assessment of ageing railway truss bridges: Rationality of probabilistic stress-life approach
(Journal article; Peer reviewed, 2016-05)Rail authorities all over the world are paying attention to extend the service lives of railway bridges. The famous Miner’s rule employed deterministic or probabilistic fatigue assessment approaches are generally used to ... -
Structural dynamic analysis of semi-submersible floating vertical axis wind turbines
(Journal article; Peer reviewed, 2016-12)The strong and stable wind at offshore locations and the increasing demand for energy have made the application of wind turbines in deeper water surge. A novel concept of a 5 MW baseline Floating Vertical Axis Wind Turbine ... -
Limit cycle oscillations at resonances
(Journal article; Peer reviewed, 2017)This paper deals with limit cycles in one degree of freedom systems. The van der Pol equation is an example of an equation describing systems with clear limit cycles in the phase space (displacement-velocity 2 dimensional ... -
Crack formation and Crack propagation into the compression zone on reinforced concrete beam structures
(Journal article; Peer reviewed, 2017)Crack formations in concrete may cause major damages in concrete structures. These damages require extensive maintenance work and thus have high costs. This paper addresses issues such as what causes cracks in concrete ...