Construction injury accidents result from different causes. Risk evaluation for cave-ins using traditional fault-tree analysis can be difficult, especially since the variables resulting in cave-ins are unique; in addition, historical data, when available, is often incomplete. In construction, assessment of risk is based on linguistic terms using subjective judgment of linguistic values such as ...

In this study, we proposed a method to improve the safety level of control software (CSW) by managing CSW’s design information and analysis results, combining failure mode effects (FMEA) fault tree (FTA). Here, CSW is developed using structured methodology. upper stage development process, as input preliminary (data flow diagrams (DFDs) (CFDs)), causes undesirable events are clarified FMEA, cou...

The production process for making sauces requires a performance appraisal so that the results are effective and efficient. In production, problems sometimes occur, such as low productivity accidents. relationship between employee performance, work safety greatly affects productivity. purpose of this study was to analyze K3 which includes Frequency Rate (FR), Severity (SR), T-Safety Value (NTS) ...

Phased-mission systems (PMS) are systems supporting missions consisting of multiple, consecutive, and non-overlapping operational phases. System composition, structure, and behavior can change from phase to phase; as a result, components may be modeled in different modes over the course of the mission. The need to model components and relationships in different modes poses unique challenges to ...

The paper presents a reliability assessment of a widely used protection system of large power squirrel cage induction motors. In conjunction with published field induction motors Failure data this assessment effort is based on a integrated predictive analysis using three methods: (1) a Fault Tree Analysis (FTA) that allows to identify and then quantify the initiating failure cause weighting fac...

China Train Control System (CTCS-3) is a safety critical computer system that features large-scale, complex structure, and redundant configuration. CTCS-3 and as well as the equipment and technologies related to it can ensure the safety and reliability running of highspeed trains, and so the assessment on its reliability becomes very important. Generally, the two elements such as common cause f...

In this paper, system reliability allocation using BN(Bayesian Network) was researched. The relationship between system failure and component failure can be expressed by probability importance degree, structure importance degree and key importance degree in FTA (Fault Tree Analysis). BN supplies a new method to reflect the importance of components in system. That is the conditional failure prob...

Reliability has vital significance to engineers and designers in a safety system. Consequently, failures free operation of components or sub-systems is of their key concern. To assess the reliability of such systems quantitatively, failure data of the components or sub-systems is essentially required. In general, such data is either not pre-recorded or present in linguistic form (good, bad etc)...

Nowadays offshore wind energy is the renewable energy source with the highest growth. Offshore wind farms are composed of large and complex wind turbines, requiring a high level of reliability, availability, maintainability and safety (RAMS). Firms are employing robust remote condition monitoring systems in order to improve RAMS, considering the difficulty to access the wind farm. The main obje...