Browsing NTNU Open by Author "Liu, Yiliu"
Now showing items 1-20 of 52
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A DBN-based risk assessment model for prediction and diagnosis of offshore drilling incidents
Wu, Shengnan; Zhang, Laibin; Zheng, Wenpei; Liu, Yiliu; Lundteigen, Mary Ann (Journal article; Preprint, 2016)Drilling operations of offshore oil and gas fields are characterized by high technical complexity, high risks, and high costs, since they are always in harsh environments with complicated geological factors. Lost circulation ... -
A DBN-based risk assessment model for prediction and diagnosis of offshore drilling incidents
Wu, Shengnan; Zhang, Laibin; Zheng, Wenpei; Liu, Yiliu; Lundteigen, Mary Ann (Journal article; Peer reviewed, 2016)Drilling operations of offshore oil and gas fields are characterized by high technical complexity, high risks, and high costs, since they are always in harsh environments with complicated geological factors. Lost circulation ... -
A Degrading Element of Safety-instrumented Systems with Combined Maintenance Strategy
Zhang, Aibo; Liu, Yiliu; Barros, Anne; Kassa, Elias (Chapter, 2019)Safety-instrumented systems (SISs) are widely used to prevent hazardous events. The mechanical actuator subsystem in a SIS can become more vulnerable with time due to progressive degradation mechanisms, such as erosion, ... -
A Framing Link Based Tabu Search Algorithm for Large-Scale Multidepot Vehicle Routing Problems
Zhang, XH; Zhong, Shiquan; Liu, Yiliu; Wang, XL (Journal article; Peer reviewed, 2014)A framing link (FL) based tabu search algorithm is proposed in this paper for a large-scale multidepot vehicle routing problem (LSMDVRP). Framing links are generated during continuous great optimization of current solutions ... -
A method of road network vulnerability identification taking into account travelers' heterogeneous risk attitudes
Liu, Yiliu; Lv, Bin; Zhang, Jin; Huang, Y (Chapter, 2018)The analysis of road network vulnerability is a challenging and important research subject in the field of transportation reliability engineering because of the complex coupling relationships among travelers, vehicles, ... -
A new design concept of Blowout Preventer for decision support
Lee, Shenae; Lundteigen, Mary Ann; Paltrinieri, Nicola; Liu, Yiliu; Rød, Magne; Dale, John (Chapter, 2017)The Blowout Preventer (BOP) system is used for controlling blowout risks in drilling operations. The system is implemented to shut down an oil and gas well when the well fluids have entered the wellbore. All BOP systems ... -
A systems engineering–based approach for framing reliability, availability, and maintainability: A case study for subsea design
Zhang, Juntao; Haskins, Cecilia; Liu, Yiliu; Lundteigen, Mary Ann (Journal article; Peer reviewed, 2018)Framing reliability, availability and maintainability (RAM) aspects are critical for an engineering design, as RAM is concerned with the sustained capability of a system throughout its useful life. RAM analysts are responsible ... -
Analytic Assessment of Safety Instrumented Systems Operating in High-Demand Mode
Taiwo, Solomon Ademola (Master thesis, 2015)The pervasive presence of safety instrumented systems in the process industry indicate the growing need for reliable loss prevention to the minutest degree. The backdrop towards addressing this need is by drawing up a ... -
Availability Assessment of Electrically-Operated Blowout Preventers
Lee, Shinae (Master thesis, 2016)Offshore drilling industry is confronted with safety and environmental challenges imposed by the risk of oil and gas blowout accidents. The blowout preventer (BOP) has been an important safety-critical system for preventing ... -
Availability Estimation and Allocation for ERTMS
Liu, Zhijin (Master thesis, 2019)This thesis focuses on the availability estimation by simulation, availability allocation and resilience assessment for railway systems. Firstly, a brief background of the railway has been given including history, ... -
Availability-based engineering resilience metric and its corresponding evaluation methodology
Cai, Baoping; Xie, Min; Liu, Yonghong; Liu, Yiliu; Feng, Qiang (Journal article; Peer reviewed, 2018)Several resilience metrics have been proposed for engineering systems (e.g., mechanical engineering, civil engineering, critical infrastructure, etc.); however, they are different from one another. Their difference is ... -
Bayesian network-based risk analysis methodology: A case of atmospheric and vacuum distillation unit
Zhang, Junyan; Cai, Baoping; Mulenga, Kabwe; Liu, Yiliu; Xie, Min (Journal article, 2018)Chemical and petrochemical accidents, such as fires and explosions, do not happen frequently but have considerable consequences. These accidents compromise not only human safety but also cause significant economic losses ... -
Bayesian Safety Analysis of Railway Systems with Driver Errors
Rekabi, Mohammed Manar (Master thesis, 2018)The main objective of this thesis is to improve safety in railway systems through studying and understanding the train drivers tasks and their common errors. A literature review is conducted to develop a deep understanding ... -
Combining system-theoretic process analysis and availability assessment: A subsea case study
Zhang, Juntao; Kim, Hyungju; Liu, Yiliu; Lundteigen, Mary Ann (Journal article; Peer reviewed, 2019)Hazard identification methods are important tools to verify that the system is able to operate according to specifications under different operating conditions. Unfortunately, many of the traditional methods are not adequate ... -
Common cause failures and cascading failures in technical systems: Similarities, differences and barriers
Xie, Lin; Lundteigen, Mary Ann; Liu, Yiliu (Chapter, 2018)Many technical systems continue to increase in size and complexity, with more interactions and interdependencies between components. Dependent failures, such as common cause failures and cascading failures, are becoming ... -
Contribution to reliability and availability analysis of novel subsea technologies - Methods and approaches to apply in the early design phase
Zhang, Juntao (Doctoral theses at NTNU;2018:387, Doctoral thesis, 2018) -
Design and verification of a SIL-rated shutdown function for a subsea power grid
Zhitkova, Ekaterina (Master thesis, 2015)The offshore oil and gas industry is moving towards a direction where more and more process equipment are being placed subsea. Accordingly, various electrical equipment, including pumps, separators, gas compressors, water ... -
Dynamic risk assessment in healthcare based on Bayesian approach
Li, Mei; Liu, Zixian; Li, Xiaopeng; Liu, Yiliu (Journal article; Peer reviewed, 2019)Risks related with healthcare are always dynamic, and they are affected by situations of patients, human errors in treatment and even the states of medical devices. This paper proposes a dynamic medical risk assessment ... -
Flexible alarming mechanism of a general GDS deployment for explosive accidents caused by gas leakage
Qi, Xin-ge; Wang, Haiqing; Liu, Yiliu; Chen, Guoming (Peer reviewed; Journal article, 2019)Gas detection system (GDS) is critical for identifying and suppressing the flammable or hazardous gas leaked by incidents. The spread of a flammable gas cloud is susceptible to external factors and highly uncertain, but ... -
Flexible truncation method for the reliability assessment of phased mission systems with repairable components
Lu, Ji-min; Lundteigen, Mary Ann; Liu, Yiliu; Wu, Xiaoyue (Journal article; Preprint, 2016)Phased-mission systems (PMS) are the system in which the component stresses and the system configuration may change over time. Real-world PMS usually consist of a large number of repetitive phases and repairable components. ...