Nuclear Engineering - Science topic

Nuclear Engineering Matreials

With the rapid advancement of modern industries, pressure vessels and piping have become increasingly integral to sectors such as energy, petrochemicals, and process industries. To grasp the research and application status in the field of pressure vessel and piping safety, 670 publications in the Web of Science core database from 2008 to 2024 were...

Fuel elements production by IPEN-CNEN has a perspective to be increased to attend Brazilian Multipurpose Reactor, under construction. This production generates liquid waste that requires proper treatment to minimize environmental impacts, promoting more sustainable practices. Considering the rise on nuclear power energy generation, and that there i...

This paper presents a neutronic analysis to assess the reactor characteristics of the NC-9000 model, a tank-type subcritical reactor from the UFMG (Universidade Federal de Minas Gerais), manufactured by Nuclear Chicago Corporation. A model was developed and compared with reference data, including a comparison with the manufacturer's report and a st...

We offer a technique for visualizing (and locating) objects in N > 3-dimensional space-for a human being. We hope that our new cartesian coordinate system will be of use for the entire span of the human race. Just as Einstein referenced, at least implicitly, Newton in his theory of special/general relativity in his use of the concept of velocity i...

Traditional leadership development programmes often fail to meet specific industry needs. This chapter describes the co-creation of a Leadership Development Programme by an academic and an industry partner, specifically tailored to the highly regulated nuclear engineering industry. This partnership effectively addressed the perceived irrelevance of...

The characterization of the neutron, prompt gamma-ray, and delayed gamma-ray radiation fields in the University of Texas at Austin Nuclear Engineering Teaching Laboratory (NETL) TRIGA reactor for the beam port (BP) 1/5 free-field environment at the 128-inch location adjacent to the core centerline has been accomplished. NETL is being explored as an...

NECP-MCX is a Monte-Carlo particle-transport code developed by the Nuclear Engineering Computational Physics (NECP) Lab. of Xi’an Jiaotong University in 2018. The first version of NECP-MCX is focused on addressing the challenge of deep-penetration radiation-shielding problems. In recent years, new capabilities of unstructured-mesh geometries, dose...

Apresentamos neste trabalho uma abordagem pedagógica da descrição do núcleo atômico a partir do modelo de camadas. A análise proposta está alicerçada na equação de Schrödinger. Neste sentido, analisamos dois sistemas, ambos baseadas na teoria de campo médio, em que as interações nucleares e eletromagnéticas são modeladas por osciladores harmônicos,...

Journal of Nuclear Engineering and Design

This book explains the nuts and bolts of a nuclear power station and how to build one. There are no equations. This is a book not a long scientific paper. I hope that the casual reader will gain an appreciation of what nuclear engineers do all day and if you are a nuclear engineer I hope that you can get something from it too. It is not intended as...

Since the increasing use of ionizing radiations in medical and industrial proceedings, recommendations and actions have been necessaries to reduce the individual radiological risks. In the Nuclear Engineering Institute (IEN), there is the Argonauta research nuclear reactor (RARG) used for producing radionuclides, neutrongraphy studies and training...

This poster, prepared for the 31st International Conference on Nuclear Engineering (ICONE31), gives an overview of the paper “Designing a Knowledge-Centric Plant Information Model by Integrating Tacit Knowledge”, which I prepared for this conference. It presents the motivation for a new information model for nuclear facilities and outlines a concep...

The process of radiological characterization involving all the systems, structures, equipment, and components resulting from the decommissioning of the VVR-S nuclear research reactor at the Horia Hulubei National Institute for Physics and Nuclear Engineering was a continuous journey marked by ongoing research, specialized training, and the accumula...

The Nuclear Engineering Laboratory of NTUA operates a radiography installation incorporating a 200 kVp -x ray unit in a basement vault. During licensing characterization phase of the control, supervised and general public zone(s) by the Regulator, it was made obvious that there existed potentially harmful dose, greater than the background, within t...

Radon progeny fluctuation outdoors has been widely studied for decades, with increasing interest in the last few years towards the investigation of possible correlation with atmospheric parameters and various environmental processes. Within this context, Bi-214 activity in ambient air has been systematically monitored at the Nuclear Engineering Lab...

It is well-known that the free vibration frequency and damping ratio of elastic structures, like tube bundles or pump rotor blades, can be significantly different when submerged compared to in vacuum, due to the added mass and damping by the fluid. The complexity of the fluid mechanics in play makes purely analytical derivation of these effects dif...

The nuclear industry is currently facing a significant demand for well-trained personnel. Due to the high market demand, it is essential to raise awareness among new target groups, including high school pupils and (pre-service) STEM teachers, about the potential and opportunities of pursuing a nuclear career. With this in mind, a new strategic part...

Experimental techniques involving epithermal neutrons can be used to study the kinetic energies of the atoms that make up the sample material. From the point of view of Nuclear Engineering, this is the range of energies that is necessarily traversed in the moderation process. From the point of view of applied physics, it is an essential range for t...

Site selection for nuclear power plants (NPPs) is an important government policy that has received widespread public attention. This situation led researchers to develop several criteria for determining NPP location. Therefore, our study aims to summarize several criteria and methods associated with NPP siting using systematic reviews and meta-anal...

Este artigo pretende propor ao mundo um novo modelo de quarks para partículas subatômicas e como esse modelo pode ter aplicações de engenharia nuclear para alterar o tempo de meia vida de partículas subatômicas. Palavras-chave: Ressonância Magnética, Radioatividade, Modelo Planetário, Quarks, Tempo de vida. Abstract This article aims to propos...

Generative AI tools (often abbreviated genAI or GAI), such as chatGPT, have arguably great potential to induce a paradigm shift in knowledge work. Herein, we present the results of a survey conducted within the nuclear engineering professional community to assess the current status and impact of genAI tools. Our study involved participants from var...

A fundamental problem requiring the development of scientific approaches is the need for limiting the human impacts on the environment. The fuel and energy facilities which use coal and hydrocarbons account for most of the greenhouse gases, specifically carbon dioxide, released into the atmosphere. In this connection, the concept of hydrogen econom...

The aim of this presentation, delivered during ANS Student Conference, is to describe the work carried out in the context of Axpo Power AG Nuclear Engineering Students’ Internship Program, striving for meaningful contributions to core monitoring technologies. Specifically, the paper presents the development of an additional system for the detection...

In recent years, the importance of improving physical protection in nuclear facilities has been observed, mainly due to the increasing progress of the Brazilian nuclear program. Physical protection requires great attention and strategies that must be designed, tested and improved in order to maintain the physical integrity of the facilities and pop...

Civil Society (CS) experts involved in the ROUTES (Waste Management routes in Europe from cradle to grave) work package of the EURAD programme, together with Radioactive Waste (RW) technical experts, have investigated how the pillars of the Aarhus Convention together with a broader understanding of Transparency and Public Participation (T&PP) can b...

In 2009 United Arab Emirates (UAE) has engaged in an ambitious nuclear power program with the construction of four 1400 MWe pressurized water reactor units at the Barakah site. Fourteen years later, three units are in commercial operation, and the fourth one is in the final steps of commissioning. The four units will produce up to 5600 megawatts of...

This is a ASME Nuclear Engineering Division Chair's editorial message for the January 2024 issue.

Description of work ‘Natural Field: Non-local Existence of Matter and Action at a Distance’ – Contemporary Physics which is mostly inherited from twentieth century does not even acknowledge the term ‘‘Non-local Existence of Matter’. ----- It is possible one might argue that curvature of space-time geometry in Einstein’s general theory is already...

The green model microalga Chlamydomonas reinhardtii recently emerged as a sustainable production chassis for the efficient biosynthesis of recombinant proteins and high-value metabolites. Its capacity for scalable, rapid and light-driven growth in minimal salt solutions, its simplicity for genetic manipulation and its "Generally Recognized As Safe"...

The Argonauta research reactor at the Institute of Nuclear Engineering - IEN operates, under normal conditions, at powers ranging from 1.7 to 340 W, developing activities of a scientific-technological nature in the areas of neutron radiography, radionuclide production and conduction from experimental practices to graduate courses at CNEN research i...

Ergonomic Analysis consists of making value judgments about the global performance of certain man-machine or man-task systems and may result from a demand related to conditions and/or safety at work. However, during the performance of the Ergonomic Analysis, the presence of ergonomists can interfere with the work progress, which limits the observat...

Modern workers will range from unskilled to highly skilled. For example, a general labor worker, employed on a construction site for a new office building, needs physical strength for intensive labor tasks, but very minimal technical training. On the other hand, some professions require a tremendous amount of training, time, and costs to become com...

Continuous and future-oriented education and training as well as knowledge management for young talents are required for the safe and reliable operation of nuclear reactors and nuclear facilities in Europe. A dedicated line of collaborative projects addresses the specific needs, such as lack of personnel (project ENEN+: “attract, retain and develop...

The even-even Ytterbium isotopes lack spectroscopic information with the increase of the neutron number and they are well deformed nuclei, presenting rotational properties. In this mass region of the nuclear chart predictions have shown rare phenomena related to nuclear structure, such as shape coexistence. In this work the population of excited st...

The Nuclear Engineering Laboratory of NTUA (NEL-NTUA) regularly tests radon-in-air concentration measuring instruments. Most common instruments involve open ionization chambers, radon absorbing devices and grab sampling devices. Most types of such instruments do not provide a calibrated radon concentration as soon as the air sampling has ended, sin...

O setor de pesquisa e desenvolvimento de um país tem suma importância para a disseminação e avanço do conhecimento, implicando diretamente no setor econômico e na visibilidade da nação internacionalmente. Sob essa perspectiva, a energia nuclear se mostra um tópico crescente e de grande relevância para a expansão do programa nuclear brasileiro. O Re...

Gamma Scanning is the best technique to carry out an internal inspection of any process equipment, without interrupting production. In the present research work, the design and model of lab scaled column and gamma column scanning system was constructed and gamma scanning of column was carried out the gamma transmission measurement at Nuclear Engine...

The main task of the research is to analyze the possibility of using tungsten protective coatings in fast nuclear power reactors cooled by a lead. The author uses computational and optimization research methods. A comprehensive analysis of the properties of tungsten, including the properties of thin tungsten coatings, has been carried out. The resu...

Nuclear energy plays an important role in the green low-carbon energy. The lead-based reactor is one of the most popular small modular reactor types. The pre-conceptual design of a 100 MW(e) small modular lead-bismuth eutectic cooled reactor was developed by Shanghai Nuclear Engineering Research & Design Institute CO., LTD. to meet the market deman...

In the context of the crisis generated by the Russian-Ukrainian conflict, radiological situation forecasts were made within the National Institute of Research and Development for Physics and Nuclear Engineering "Horia Hulubei" (IFIN-HH) for all nuclear power plants in Ukraine. Therefore, the resident decision support software systems for radiologic...

Neutron shielding materials were fabricated based on natural rubber (NR) and boron carbide (B 4 C) as their main components. Natural rubber, which is abundant in hydrogen, can lower the energy of a neutron. Boron carbide could be utilized as a neutron shielding material due to its high boron content. The shielding materials were fabricated with bor...

Transient response of a Pressured Water Reactor (PWR) based nuclear power plant parameters and safety systems during a Loss of Coolant Accident (LOCA) for cold leg has been carried out by using PCTRAN and COMSOL. The whole study is done with a consideration of Nuclear Power Plant (NPP) with two loops of a PWR. The plant model used in this work is a...

The main aim of this research is to expand the knowledge of the early stages of copper metallurgy in the Chalcolithic within the Gumelniţa communities through compositional analyses (PIXE, XRF) performed on a group of copper objects that originated from several sites belonging to Kodzhadermen– Gumelniţa–Karanovo VI (KGK VI) communities in southeast...

Download (free) from: https://www.mdpi.com/2673-4362/3/4/22/htm . . . . . . Data from the literature were analyzed and experimental data were obtained on the sublimation of uranium-zirconium carbonitrides with different contents of carbon, nitrogen and oxygen impurities in a wide temperature range (1773–2323 K). The composition of the gas phase w...

It is with immense pleasure to write this column and join all of you the Nuclear Engineering and Radiation Science (NERS) journal readers and contributors in celebrating its eighth birthday. As is true from the very beginning, the ASME Nuclear Engineering Division (NED) once again wishes the Journal and in particular Editor-in-Chief Igor Pioro and...

The knowledge of workers constitute as valuable resources, as they enable organizations to perform their functions successfully. However, there are conditions that favor the loss of this knowledge in organizations, as for example, the natural aging of workers and consequently the retirement and staff turnover. Then, it becomes important for organiz...

Land, Water, and Climate Issues in Large and Megacities under the Lens of Nuclear Science: An Approach for Achieving Sus-tainable Development Goal (SDG11) Elaine Aparecida Rodrigues 1,2, Maurício Lamano Ferreira 3,4,*, Amanda Rodrigues de Carvalho 5, José Oscar William Vega Bustillos 5, Rodrigo Antonio Braga Moraes Victor 6, Marcelo Gomes Sodré 2,...

In this work a thorough analysis of the vertical distribution of natural and artificial radionuclides and trace elements in a sediment core sample was conducted. A sediment core of 39 cm length was grabbed from the deep-sea trench (1540 m depth) southern of Samothrace Island, Aegean Sea. The sediment core was then treated at the Hellenic Centre for...

A new detailed model of the Pressurized Water Reactor (PWR) Nuclear Power Plant (NPP) has been built and linked with the previously developed power system Midterm Dynamic Simulation Program (MDSP). Under large disturbances, the model can be utilized to evaluate the current and midterm dynamic process of a power system with a PWR NPP. The simulation...

CEA develops the PLEIADES software environment in cooperation with EDF and Framatome to simulate fuel elements behavior under normal and off-normal conditions [1]. PLEIADES can be viewed as a fuel performance code based on a multidimensional and on a multiphysics approach. ALCYONE, the PLEIADES code dedicated to PWRs fuel elements, already provides...

Our study offers a fresh insight into the Starčevo-Criș pottery from Schela Cladovei based on the application of computed tomography (CT) used to obtain cross-section images of both archaeological and experimental vessels. The pottery experiments were conducted in the summer of 2019 at Schela Cladovei (Romania), while the CT scans were performed at...

This paper reports on the results of (n,n′γ) and (p,p′γ) cross section measurements on nickel performed at the Geel Electron Linear Accelerator of the European Commission, Joint Research Centre (Geel) and at the 9-MV Tandem Accelerator of Horia Hulubei National Institute for Physics and Nuclear Engineering (Bucharest-Magurele), respectively. The ma...

Control rod modeling in Liquid Metal-cooled Fast Reactors (LMFRs) is important for an accurate simulation, especially in depletion calculations. Recently, control rod search and cusping models have been added to the LUPINE multiphysics fast reactor simulator. LUPINE stands for the "LMFR Utility for Physics Informed Nuclear Engineering," and is curr...

En mi trabajo de grado en Ingeniería Nuclear, realicé el estudio de la difusión de H en muestras de un tubo de presión de Zr-2.5%Nb, utilizados en reactores tipo PHWR, mediante la realización de imágenes con neutrones. El H genera un buen contraste a los neutrones respecto de materiales metálicos, como el Zr, por lo que esta técnica es adecuada y e...

A ferritic-martensitic (FM) steel, HT9, has been studied for use in advanced nuclear reactors for its excellent swelling resistance and high-temperature strength. However, the effects of sink strength (SS) on tailoring the radiation responses in HT9 have not yet been fully studied. The advancement of the mechanistic understanding of how SS affects...

A importância da proteção contra radiação ionizante está aumentando em paralelo com a evolução da medicina nuclear. O emprego de radiações na área da saúde inclui seções de diagnóstico e de radioterapia – desde que a sala de tratamento receba um nível de radiação que não seja deletério. Este trabalho ilustrará a eficácia do concreto como material d...

The transportation of heavy equipment in nuclear engineering has always been the focus of engineers, especially those transfer devices with the characteristics of small geometric size and heavy load. According to this kind of compact heavy-load transfer device and its engineering tasks, the core problems caused by excessive vertical and horizontal...

Neutronics calculations have been performed of the MYRRHA ADS Reactor with a thorium-based fuel mixture, using the simulation programs MCNPX (Waters, 2002) and Geant4 (Agostinelli, 2003). Thorium is often considered for ADS systems, and this is the first evaluation of the possibilities for thorium based fuels using a reactor design which has been d...

The ELI-NP (Extreme Light Intensity—Nuclear Physics) project, developed at the Horia Hulubei National Institute for RD in Physics and Nuclear Engineering (IFIN-HH), has included one component dedicated to the study of interactions between brilliant gamma-ray and matter, with applications in nuclear physics and the science of materials. The paper is...

To address the lack of familiarity with nuclear history common among nuclear engineers and physicists, we outline the design and deployment of a special-topics course entitled "NE290: Nuclear History, Politics, and Futures" across which we contextualize the importance of the field at its inception, in current affairs, and in future endeavors. We be...

Nuclear Engineering Program (PEN/COPPE)-Universidade Federal do Rio de Janeiro (UFRJ) Over the years, numerical and analytical solutions have been developed for calculating the Doppler broadening function using the Kaniadakis deformed statistics. Considering that this type of statistics is not yet applied in current nuclear reactors, using this met...

PT-BR: Apresentação realizada para obtenção de grau na disciplina de "Introdução à Engenharia Nuclear" do curso de graduação em Engenharia Nuclear da Universidade Federal do Rio de Janeiro - UFRJ. O trabalho têm como principal objetivo apresentar os temas de produção de energia por meio de Fissão e de Fusão Nuclear, além de suas vantagens, métodos...

The fuel of operating and new promising nuclear reactors operates under extreme conditions. For a long-term, trouble-free and efficient operation of the reactor, the fuel is modified by adding various homogeneous compounds [1,2] and heterogeneous inclusions [3]. These alloy additives improve the thermophysical and neutron-physical properties of the...

This dissertation explores the interaction between high-intensity lasers and plasmas to accelerate electrons and produce radiation via experimental and computational efforts. The laser pulses used in this dissertation have ultrashort duration ($<100$ fs), near-infrared to mid-infrared wavelength (0.8 $mu m$, 2 $mu m$, or 3.9 $mu m$), millijoules of...

Zirconium is used as a structural material for use in aggressive environments, including the core of nuclear reactors. The traditional technology of manufacturing the structural elements of zirconium nuclear reactors is characterized by a long technological process and a significant amount of waste in the form of metal shavings. The paper presents...

Highlights • The full use of the energy potential of uranium raw materials. • R&D program to involve MA in mixed nitride. • Production of mixed nitride fuel with MA – homogeneous option. • Production of mixed nitride fuel with MA – intra-pin heterogeneity. • Development of fuel for intra-FA heterogeneity of MA transmutation. Abstract The main resul...

In 2006, the final report of the MIT Center for Advanced Nuclear Energy Center the project entitled High Performance Fuel Design for Next Generation PWR’s presented the proposal of an internal and external cooled ring fuel with the objective of increasing the power density of a PWR reactor without compromising the safety margins of the installation...

The explicit and tacit knowledge of workers constitute as valuable resources, as they enable organizations to perform their functions successfully. Such knowledge is derived from the qualification and experience of workers. On the other side, there are factors that favor the loss of this knowledge in organizations, as for example, the natural aging...