Blar i Øvrige samlinger på tidsskrift "Reliability Engineering & System Safety"
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Incorporating software failure in risk analysis – Part 1: Software functional failure mode classification
(Peer reviewed; Journal article, 2020)Advanced technological systems consist of a combination of hardware and software, and they are often operated or supervised by a human operator. Failures in software-intensive systems may be difficult to identify, analyze, ... -
Incorporating software failure in risk analysis––Part 2: Risk modeling process and case study
(Journal article; Peer reviewed, 2020)The advent of autonomous cars, drones, and ships, the complexity of these systems is increasing, challenging risk analysis and risk mitigation, since the incorporation of software failures intro traditional risk analysis ... -
Introduction of degradation modeling in qualification of the novel subsea technology
(Journal article; Peer reviewed, 2021)All-electric systems are the novel subsea technology that is an upgrade of widely deployed electro-hydraulic control systems. They promised more reliable equipment and a safer environment. An all-electric production system ... -
Joint optimization of performance-based contracting, condition-based maintenance and spare parts inventory for degrading production systems
(Journal article; Peer reviewed, 2024)As a novel supporting approach, performance-based contracting (PBC) ties the service supplier’s compensation to the performance outcome of the system owned by the customer. It enables the service supplier to implement an ... -
Maintenance analysis of a two-component load-sharing system
(Journal article, 2017)This paper presents a two-component load-sharing system. The failure rates of the two components are time dependent and load dependent. Whenever one fails, it is imperfectly repaired with a time delay during which the ... -
Modeling for evaluation of safety instrumented systems with heterogeneous components
(Peer reviewed; Journal article, 2021)A novel methodology for evaluation of safety instrumented systems (SISs) with heterogeneous components based on multi-stage dynamic Bayesian networks (MDBNs) is proposed. The unified evaluation model for M-out-of-N ... -
Multi-phase reliability growth test planning for repairable products sold with a two-dimensional warranty
(Journal article; Peer reviewed, 2019)For products sold with a two-dimensional warranty policy, the warranty servicing cost can be reduced through reliability growth during development. This paper investigates a multi-phase reliability growth test program for ... -
Nonhomogeneous Poisson process with nonparametric frailty and covariates
(Journal article; Peer reviewed, 2017)The nonhomogeneous Poisson process is commonly used in the modeling of failure times of complex repairable systems. In practice there may be a substantial heterogeneity in the failure behavior among apparently identical ... -
Operational limits for aquaculture operations from a risk and safety perspective
(Peer reviewed; Journal article, 2020)Current decision making regarding whether to abort a high-risk aquaculture operation in a Norwegian fish farm is mainly experience-driven. The on-site personnel decides whether to start/delay/abort operations primarily ... -
Optimal imperfect maintenance cost analysis of a two-component system with failure interactions
(Journal article; Peer reviewed, 2018)This paper considers a two-component system with failure interactions. Component 1 is repairable and component 2 is non repairable and is subject to an increasing degradation. One considers two different shock models. In ... -
Optimization of maintenances following proof tests for the final element of a safety-instrumented system
(Journal article; Peer reviewed, 2020)Safety-instrumented systems (SISs) have been widely installed to prevent accidental events and mitigate their consequences. Mechanical final elements of SISs often become vulnerable with time due to degradations, but the ... -
Performance analysis for subsea blind shear ram preventers subject to testing strategies
(Journal article; Peer reviewed, 2018)In a subsea blowout preventer system, a subsea blind shear ram preventer (BSRP) plays as a crucial safety barrier by cutting off the drill pipe and sealing the wellhead to prevent serious accidents. Testing and repairs of ... -
Performance analysis of safety barriers against cascading failures in a battery pack
(Peer reviewed; Journal article, 2022)Lithium-ion batteries have been widely employed as the principal power source in electric vehicles and other storage systems. However, some critical issues in a battery pack still exist, such as thermal failures on initial ... -
Performance analysis of safety instrumented systems against cascading failure during prolonged demand
(Peer reviewed; Journal article, 2021)Cascading failures may occur in many technical systems where the failure of one component triggers successive events. Safety barriers like safety instrumented systems are installed in many industries to prevent failures ... -
Proof-testing strategies induced by dangerous detected failures of safety-instrumented systems
(Journal article; Peer reviewed, 2015)Some dangerous failures of safety-instrumented systems (SISs) are detected almost immediately by diagnostic self-testing as dangerous detected (DD) failures, whereas other dangerous failures can only be detected by ... -
An RCM approach for assessing reliability challenges and maintenance needs of unmanned cargo ships
(Peer reviewed; Journal article, 2021)Unmanned autonomous cargo ships may change the maritime industry, but there are issues regarding reliability and maintenance of machinery equipment that are yet to be solved. This article examines the applicability of the ... -
Reliability analysis of multi-parameter monitoring systems for Intensive Care Units
(Peer reviewed; Journal article, 2022)Multi-parameter monitoring systems in Intensive Care Units (ICUs) monitor the clinical condition of critical state patients. These Systems of Systems (SoS) comprise a set of Constituent Systems (CS) to measure parameters ... -
Reliability modeling of subsea SISs partial testing subject to delayed restoration
(Journal article; Peer reviewed, 2019)Subsea oil and gas production has always involved the challenging task of determining the overall reliability of safeguarding systems, such as safety instrumented systems (SISs). Partial testing and delayed restoration of ... -
Remaining useful life predictions for turbofan engine degradation using semi-supervised deep architecture
(Journal article; Peer reviewed, 2018)In recent years, research has proposed several deep learning (DL) approaches to providing reliable remaining useful life (RUL) predictions in Prognostics and Health Management (PHM) applications. Although supervised DL ... -
Risk of collision between service vessels and offshore wind turbines
(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 ...