Search Results - "Frutuoso e Melo, P.F."

A critical review of methods and models for evaluating organizational factors in Human Reliability Analysis by Alvarenga, M.A.B., Frutuoso e Melo, P.F., Fonseca, R.A.

“…This work makes a critical evaluation of the deficiencies concerning human factors and evaluates the potential of quantitative techniques that have been…”
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Including severe accidents in the design basis of nuclear power plants: An organizational factors perspective after the Fukushima accident by Alvarenga, M.A.B., Frutuoso e Melo, P.F.

“…•The Fukushima accident was man-made and not caused by natural phenomena.•Vulnerabilities were known by regulator and licensee but measures were not…”
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Stochastic and deterministic models to evaluate the critical distance of a near surface repository for the disposal of intermediate and low level radioactive wastes by Alves, A.S.M., Melo, P.F. Frutuoso e, Passos, E.M., Fontes, G.S.

“…•The water infiltration scenario is evaluated for a near surface repository.•The main objective is the determination of the critical distance of the…”
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A method for the identification of a set of critical safety functions for a uranium hexafluoride conversion plant by Santos, F.C., Gonçalves, J.S., Medeiros, J.A.C.C., Frutuoso e Melo, P.F.

“…•The purpose is to define a critical safety function set for a conversion plant.•Hazard identification techniques have been considered in the analysis.•The…”
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Evaluation of the probability of overflow from the Abadia de Goiás repository by the Fokker-Planck equation using the Trotter’s formula by Gabcan, L., Alves, A.S.M., da Silva, F.C., Teixeira, D.G., Frutuoso e Melo, P.F.

“…•The Fokker-Planck equation is used to obtain the overflow probability of a waste repository.•It is a radioactive near surface repository for the Goiania…”
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A mass and energy balance for a specific refuelling of Angra 2 nuclear power plant from a life cycle perspective by Figueiredo, P.J.M., Frutuoso e Melo, P.F., Alvim, A.C.M., Alves, A.S.M.

“…•A mass and energy balance for a cycle of Angra 2 plant is performed with real data.•A life cycle analysis approach was used in order to allow for…”
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A review of the cognitive basis for human reliability analysis by Alvarenga, M.A.B., Frutuoso e Melo, P.F.

“…In the early 1990s, criticism over first-generation human reliability analysis (HRA) models, like THERP, SPAR-H, and ASEP, claimed that these models did not…”
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Preventive Maintenance Policy Optimization of a Nuclear Reactor High Pressure Injection System Using a Reliability-Cost Model by Franklin Lapa, C.M., Pereira, C.M.N.A., Frutuoso e Melo, P.F.

“…Previous works have demonstrated that Genetic Algorithms (GA) and Probabilistic Safety Analysis (PSA) can be applied to maintenance policy optimization…”
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Component unavailability model for PSA Level I applications considering aging and startup degradation: An Application to an Emergency Diesel Generator System by Lima do Nascimento, J.M., Rivero, J.J., Frutuoso e Melo, P.F., Perdomo, M.

“…The paper proposes an unavailability model, which considers standby component degradation due to repeated startups, including not only planned surveillance…”
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3D simulation model of water infiltration for radioactive waste on a virtual reality Environment: An application to the Abadia de Goiás repository by Gabcan, L., Alves, A.S.M., Frutuoso e Melo, P.F.

“…•Virtual environment scenario for a radioactive waste infiltration model.•The aim is to implement a 3D simulation model to a repository safety…”
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Sensitivity analysis of the accident rate of a plant equipped with a protection channel under aging by the generalized perturbation theory by de Souza, L.F.A., Teixeira, D.G., Frutuoso e Melo, P.F., da Silva, F.C.

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The phased application of STAMP, FRAM and RAG as a strategy to improve complex sociotechnical system safety by de Linhares, T.Q., Maia, Y.L., Ferreira Frutuoso e Melo, P.F.

“…Systemic approaches and methods have been developed to adequately deal with the challenge of managing complex sociotechnical system safety (Yousefi et al.,…”
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Availability assessment of a nuclear reactor limitation system by a Timed Petri Net by Vital, R.B.N., Frutuoso e Melo, P.F., Medeiros, J.A.C.C., Alvarenga, M.A.B.

“…The constant evolution of instrumentation and control systems (I & C) of nuclear power plants requires a robust reliability assessment, due to the constant…”
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Human reliability analysis of the Tokai-Mura accident through a THERP–CREAM and expert opinion auditing approach by Ribeiro, A.C., Sousa, A.L., Duarte, J.P., Frutuoso e Melo, P.F.

“…•Influence of organizational features on human error probability is evaluated.•Expert opinion elicitation and auditing process are used to fill data gaps.•The…”
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An Itô model of pit corrosion in pipelines for evaluating risk-informed decision making by Fontes, G.S., Melo, P.F. Frutuoso e, Alves, A.S. De Martin

“…•The aim of this paper is to determine the time evolution of pit corrosion.•The stochastic nature of the corrosion process is governed by an Itô equation.•The…”
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A fuzzy data envelopment analysis approach for FMEA by Garcia, P.A.A., Schirru, R., Frutuoso E^Melo, P.F.

“…We present a data envelopment analysis approach for determining ranking indices among failure modes in which the typical FMEA parameters are modeled as fuzzy…”
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Simplification of transition state diagrams via Generalized Perturbation Theory in the Markovian reliability analysis of aging safety systems by Vicente, R.C., Frutuoso e Melo, P.F., Silva, F.C., Alvim, A.C.M.

“…•Large state transition diagrams in Markovian reliability analysis are a pitfall.•The Generalized Perturbation Theory can help simplify state transition…”
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Analysis of the qualified life extension of nuclear safety systems through modulated Poisson point processes by Saldanha, Pedro L.C., Frutuoso e Melo, P.F.

“…The Modulated Power Law Process (MPLP) is a three-parameter stochastic point process that can be used to describe the failure times of repairable systems…”
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A Root Cause Analysis Method for Industrial Plant Reliability Improvement and Engineering Design Feedback by C. Nascimento, P.F. Frutuoso E Melo

“…Root cause analysis (RCA) methodologies have been used worldwide to help preventing incidental events from recurring, contributing to avoid losses and worker…”
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Safety Integrity Level (SIL) Integrated with Human and Organizational Factors by A. Melo, P.F. Frutuoso E Melo, M.S. Nele

“…From many accident/incidents analysis, human and organizational factors have been identified as root causes or contributing factors. Therefore, in order to…”
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