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Reliability Analysis for Physically Separated Redundant System
(Chapter, 2017)Redundancy has been a key concept to achieve high system reliability in technical systems, and the concept is central in modern technology regulations. One important aspect of successful redundancy is independence of the ... -
Reliability Analysis of Wireless Safety-Instrumented Systems
(Master thesis, 2015)Progressive development of wireless technology in recent years has enabled it to span its application to a wide verity of systems. Simple house hold monitoring and monitoring of a patient in a hospital gives two diverse ... -
Reliability and barrier assessment of series–parallel systems subject to cascading failures
(Peer reviewed; Journal article, 2020)Cascading failures can occur in many technical systems where the components are organized as in series–parallel structures. The failures in these systems may propagate from one component to the other, not only within the ... -
Reliability and Safety Assessment of All-Electric Subsea Concepts
(Master thesis, 2019)Olje- og gassindustrien ønsker å erstatte eksisterende elektrohydrauliske styringssystemer med hel-elektriske løsninger for kontroll av undervannsventiler. Hel-elektrisk teknologi har stort potensial for utnyttelse av ... -
Reliability and safety assessment of Asubsea rov-based sensor retrieval tool
(Master thesis, 2011)The ROV –based subsea sensor retrieval system is a new technology designed by RoxarFlow Measurement As, for the installation and retrieval of subsea sensors mounted on subsea production equipment (such as Christmas trees ... -
Reliability assessment for final elements of SISs with time dependent failures
(Journal article, 2018)Reliability assessment for safety-instrumented systems (SISs) plays a vital role in improving the design of SISs. Traditional methods for SIS reliability assessment that assume constant failure rates are, however, not ... -
Reliability assessment for subsea HIPPS valves with partial stroke testing
(Chapter, 2017)High integrity pressure protection systems (HIPPS) have been applied in subsea applications to prevent accidents due to over-pressurization. A subsea HIPPS can be regarded as a complete functional loop consisting of sensors, ... -
RELIABILITY ASSESSMENT OF A SUBSEA HIPPS
(Master thesis, 2014)Safety instrumented systems are vital in the oil and gas industry. A SIS consists of input elements, a logic solver and final elements. A High Integrity Pressure Protection System is an example of such a system. HIPPS is ... -
Reliability assessment of safety instrumented systems operating in high demand mode
(Master thesis, 2010)Safety instrumented systems (SISs) play an important role in protecting human life, the environment, and material and financial assets. In order to achieve the expected protection function, high reliability of such systems ... -
Reliability Assessment of Safety Instrumented Systems: An Application Example For A Ballasting System: Pålitelighetsvurdering av instrumenterte sikkerhetssystemer: Med anvendelsesområde for et ballasteringssystem
(Master thesis, 2012)Ballast systems perform important safety functions on ships and floating facilities, and failure to ballast properly may lead to a major accident, involving multiple fatalities, release to environment and loss of vessel. ... -
Reliability assessment of subsea BOP control systems
(Master thesis, 2015)The subsea blowout preventer (BOP) and the BOP control system were the most important contributors to the Macondo accident in April 2010. A BOP is a large valve system used during the drilling phase; to seal, control, and ... -
Reliability assessment of subsea BOP shear ram preventers
(Master thesis, 2015)The objective of this report is to assess the reliability of blind shear rams (BSRs). The BSR's failure to seal off and secure the well in the Macondo incident proved the necessity of reevaluating the abilities of current ... -
Reliability Assessment of Subsea X-mas Tree Configurations
(Master thesis, 2015)The focus of this thesis is to provide input for choosing the optimal X-mas Tree (XT) configuration for a subsea production system. The subsea XT is used to direct, regulate, and stop the flow from a well. These functions ... -
Reliability Centered Maintenance for vannkraftprodusenten BKK Produksjon
(Master thesis, 2014)Reliability Centered Maintenance (RCM) er en systematisk prosess som har til hensikt å realisere den iboende påliteligheten til en gjenstand ved utvikling av et vedlikeholdsprogram og er i så måte en prosess som kan ... -
Reliability evaluation of Chinese Train Control System Level 3 by using a fuzzy approach
(Journal article, 2018)The Chinese Train Control System Level 3 (CTCS-3) has been developed to ensure the safe and efficient operation of high-speed railway networks in China. Failure of the CTCS-3 may result in serious accidents, causing damage ... -
Reliability Management in subway sector
(Master thesis, 2019)The main objective of this thesis is to study and understand the current reliability management system in the subway sector. The study focuses on explanations of process. Furthermore, based on the analysis results, the ... -
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 ... -
Reliability Modelling of ERTMS/ETCS
(Master thesis, 2017)System reliability analysis has a significant influence on making decision and defining requirements for future operations. Performing a reliability assessment for a complex system is challenging due to varied performance ... -
Reliability of metal cutting tools:: Stochastic tool life modelling and optimization of tool replacement time
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:177, Doctoral thesis, 2010)This PhD thesis is based on six articles and proposes new approaches for modelling of the life of cutting tools and for determining the optimal tool replacement time. These issues are very closely related and play a critical ... -
Reliability of subsea blowout preventer systems - A study of the emergency disconnect function
(Master thesis, 2015)The Deepwater Horizon accident in 2010 emphasizes the significance of safety in offshore drilling. The drilling rig was considered to be reliable and safe, but the blowout in the Gulf of Mexico costed eleven lives and the ...