Orientador: Maria José Pereira Monteiro de Almeida / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Educação / Made available in DSpace on 2018-08-23T23:33:08Z (GMT). No. of bitstreams: 1 Sorpreso_ThirzaPavan_D.pdf: 3338324 bytes, checksum: 9fa7c0796987fabc3d8b0d79d68a501b (MD5) Previous issue date: 2013 / Resumo: A pesquisa aqui apresentada se justifica pela necessidade de renovação de conteúdos e de formas de ensino, apontada por estudos da área de ensino de Física. Trabalhamos elementos de Física Nuclear por meio da abordagem Ciência, Tecnologia e Sociedade (CTS) em uma disciplina oferecida nos anos iniciais da licenciatura em Física. A abordagem CTS incorporou-se ao ensino a partir de movimentos extraescolares que reivindicavam uma visão mais crítica da Ciência e da Tecnologia, considerando-as como instituições não neutras, ou seja, influenciadas pelo contexto social de sua produção e de sua utilização. A abordagem CTS é utilizada neste trabalho visando a reflexões dos futuros professores de Física sobre a necessidade de rompimento com um ensino baseado apenas em cálculos e em resolução de exercícios e sobre a compreensão da Física Nuclear de forma ampla, ou seja, levando em consideração a não neutralidade da Ciência, sua produção e as complexas relações estabelecidas com a Sociedade e a Tecnologia. Para o desenvolvimento do trabalho na formação de professores, articulamos uma unidade de ensino a partir da pressuposição de um interlocutor, da escolha de conteúdos sobre a Física Nuclear e da ênfase em determinados elementos da abordagem CTS, adequando-os às condições de produção da disciplina "Conhecimentos em Física Escolar I", em que foi desenvolvida a pesquisa. Para elaborar as justificativas teóricas de constituição da unidade, apresentamos a fundamentação de elementos presentes na unidade de ensino como: a inserção de temas de relevância social; a contextualização histórica da abordagem CTS; a necessidade de se pensar o Ensino de Física em sua relação com a sociedade; a necessidade de proporcionar aos estudantes de licenciatura uma vivência de experiência CTS; a importância de explorar a relação entre Ciência, Tecnologia e Sociedade, de abarcar uma visão de Ciência não neutra no ensino de Física e de estabelecer limites entre a interdisciplinaridade e a especificidade de conteúdos. Como referencial teórico e metodológico para a constituição desta pesquisa, utilizamos algumas noções da Análise de Discurso, e algumas noções associadas às relações entre escola e sociedade e entre ciência, tecnologia e sociedade. Por fim, realizamos análises de discursos dos estudantes de licenciatura e observamos que o desenvolvimento da unidade de ensino gerou conflitos em seus imaginários e alguns deslocamentos, fazendo com que eles ampliassem suas produções de sentido sobre a abordagem CTS e alguns de seus elementos. Em especial, verificamos que os licenciandos incorporam a noção de interdisciplinaridade como trabalho conjunto entre professores e reservam papel importante para a História da Ciência em uma prática CTS. / Abstract: The present research is justified by the constant need to improve the teaching methods in Physics. Our main approach consisted in addressing elements of nuclear physics to undergraduate students using Science, Technology and Society (STS), a discipline offered at the beginning of their formation. The STS approach was incorporated from extra-scholar activities claiming a more critical view of Science and Technology, and considering them as non-neutral institutions (i.e., influenced by the social context of their production and use). The STS approach is used in this work in order to question future teachers in Physics about the need to break with a school system based only on calculations and problem solving, thereby seeking further understanding of nuclear physics in a broader way (i.e., taking into account the non-neutrality of Science, its production and the complex relationships it has established with the Society and Technology). To develop the teaching work, we created a teaching unit from the pre-supposition of a speaker, the choice of a Nuclear Physics program, and the emphasis on certain elements of the STS approach, adapting them to the conditions of production discipline where the research was developed, "Knowledge in Physical Education I". To theoretically justify the constitution of the unit, we presented the rationale of elements present in the teaching unit, such as the inclusion of topics of social relevance; the historical context of the STS approach; the need to think about the teaching of Physics in their relationship with society; the need to provide undergraduate students an experience of STS; the importance of exploring the relationship between STS; the need to embrace a non-neutral vision in physics teaching; the limits between the inter-disciplinarity and the specificity contents. We used some notions of Discourse Analysis as a theoretical and methodological framework for the establishment of this research, in addition to our theoretical framework which also implied some notions related to the relationship between school and society and between STS. Eventually, we performed discourses analyses of undergraduate students and found that the development of the teaching unit created conflicts in their imaginary and shifts, causing students to broaden their productions of meaning on the STS approach and some of its elements. In particular, we found that students incorporated the notion of inter-disciplinarity as a joint effort between teachers, and reserved an important role for the History of Science in a practice STS. / Doutorado / Ensino e Práticas Culturais / Doutora em Educação

This thesis aims to propose and formulate the growth strategy for ZPA Nová Paka, a.s. company, that produces and sales measurement and control technologies for selected nuclear energy markets in the EU. The theoretical part deals with a basic strategic growth premise analysis, an analysis of the external and internal factors and a risk analysis. The analytic part contains a complex macro-environmental SLEPT analysis, a Porter five forces model analysis of branch competition and a 7S analysis of the internal environment. These results will purpose a means of reducing the strategy-related risks and options of generating profit after the return of the investments.

[pt] Os bombardeios nucleares contra Hiroshima e Nagasaki alteraram profundamente o conceito de guerra entre os Estados nacionais. A partir do momento em que os dois cogumelos atômicos espalharam-se as cidades japonesas, a inclusão da ameaça nuclear em conflitos interestatais passou a ser preocupação obrigatória das nações que disputariam áreas de influência diante a Guerra Fria. Estimulada por essa preocupação, a comunidade internacional tomou diversas medidas durante os últimos 50 anos para restringir o uso dos armamentos nucleares. O Tratado de não-Proliferação Nuclear (TNP) foi uma das principais iniciativas para atingir esse fim. Seus artigos determinaram a proibição do desenvolvimento e da aquisição de armamentos nucleares após 1967, além de incentivar o desenvolvimento da tecnologia nuclear civil e o encorajamento do progressivo desarmamento dos Estados.Os acordos firmados no final da década de 60, entretanto, não foram capazes de prever o avanço da tecnologia nuclear. Se o uso pacífico do átomo era permitido em 1968, hoje o desenvolvimento de tecnologias de duplo uso - tais como o enriquecimento de urânio, ainda que para fins pacíficos - não é visto com bons olhos.As dificuldades para verificar a boa-fé do desenvolvimento e do uso dessas tecnologias tornaram a possibilidade de sua proliferação um problema ainda mais temido. O surgimento de programas nucleares clandestinos e, consequentemente, de novos Estados nucleares, além da cada vez mais presente possibilidade de terrorismo nuclear, abalaram a credibilidade do Regime de Não-Proliferação. Para tentar controlar os danos causados por esse problema, diversas reuniões de revisão do TNP vêm tentando preencher as brechas que desafiam o regime.Esta dissertação mostra quais são as principais tensões existentes dentro do regime e como a comunidade internacional e a Agência Internacional de Energia Atômica estão atuando para lidar com essas dificuldades. A análise do artigo IV do TNP parece demonstrar que, se as cláusulas do contrato não forem cumpridas de forma igualitária por todos os Estados-parte, será muito difícil resolver os problemas da não-proliferação. / [en] The nuclear bombings over hiroshima and Nagasaki have deeply changed the concept of war among national States. From the moment the two atomic mushroom clouds spread in the sky over the Japanese cities, the inclusion of the nuclear threat in interstate conflicts has become a mandatory worry to the nations that would struggle for influence areas during the Cold War.Stimulated by these worries, the international community has taken several measures over last 50 years in order to curb the use of nuclear weapons. The Non-Proliferation Treaty (NPT) has been one of the main initiatives aimed at this purpose. Its articles instituted the proscription of developing and acquiring nuclear weapons after 1967, besides motivating the expasion of civil nuclear technology and heartening the progressive disarmament of states. The agreements signed by the end of the 60s, however, were not able to predict the advance of nuclear technology. If the peaceful use of the atom was allowed back in 1968, today the development of dual-use technology- such as uranium enrichment, even for peaceful reasons - is still frowned upon.The difficulties to examine the true intentions behind developing and using this technology have changed the possibility of its proliferation into a truly fearsome problem. The blossoming of rogue nuclear programs, and, therefore, of new nuclear states, allied to the growing threat of nuclear terrorism, has shaken the credibility of the non-proliferation regime. In order to control the damages induced by this problem, several review conferences have been trying to mend the gaps that challenge the regime.This paper tries to show which are the main tensions inside the regime and how the international community and the Internatonal Atomic Energy Agency are trying to cope with these matters. The analysis of Articles IV of the NPT seems to demonstrate that if the treaty provisions are not equally observed by all member states, it will be extremely hard to overcome the problems of non-proliferation.

The safety performance of nuclear power reactors is a very important factor in evaluating nuclear energy sustainability. Improving the safety performance of nuclear reactors can enhance nuclear energy sustainability as it will improve the environmental indicator used to evaluate the overall sustainability of nuclear energy. Great interest is given now to advanced nuclear reactors especially those using passive safety components. Investigation of the improvement in nuclear safety using advanced reactors was done by comparing the safety performance of a conventional reactor which uses active safety systems, such as Pressurized Water Reactor (PWR), with an advanced reactor which uses passive safety systems, such as AP1000, during a design basis accident, such as Loss of Coolant Accident (LOCA), using the PCTran as a simulation code. To assess the safety performance of PWR and AP1000, the “Global Safety Index” GSI model was developed by introducing three indicators: probability of accident occurrence, performance of safety system in case of an accident occurrence, and the consequences of the accident. Only the second indicator was considered in this work. A more detailed model for studying the performance of passive safety systems in AP1000 was developed. That was done using SCDAPSIM/RELAP5 code as it is capable of modelling design basis accidents (DBAs) in advanced nuclear reactors.

L’étude de l’évolution du droit international face aux risques posés par les accidents nucléaires soulève une série de questionnements. Le premier est relatif aux moyens juridiques par lesquels le droit entend faire face aux risques et à leur matérialisation. Le second va s’attacher à apprécier l’efficacité et l’effectivité du droit adopté. Enfin, en postulant d’un relatif échec du droit suite à la survenance des accidents nucléaires, il faut encore s’interroger sur les possibilités d’amélioration du droit. Ces différentes interrogations peuvent être rassemblées sous la question plus générale de la pertinence de l’adaptation du droit international face au risque nucléaire. Plus largement, la thèse qui émane de ces travaux est celle d’une adaptation continue du droit, issue de la dynamique dialogique existant entre la science juridique et le progrès scientifique, comme un gage d’une amélioration de son efficacité et de son effectivité. Cette adaptation est toutefois dépendante de l’évolution technique de l’énergie nucléaire. En effet, l’atome va à la fois limiter et étendre la portée même de ce droit. Cette caractéristique originale, laisse entrevoir la présence de difficultés au sein de l’ambitieuse mission consistant à appréhender le fait scientifique dans toute sa complexité. L’enjeu est de taille pour le droit nucléaire international : il s’agit de pallier les effets d’un risque technologique majeur afin de préserver les conditions de vie de l’humanité / Reviewing the complex relation between international law and nuclear risks posed by major accidents raises a set of questions. It first addresses the nature of the legal response made in this regard. It also appreciates whether the framework is sufficiently efficient and effective. At last, assuming that nuclear accidents turn international law into a relative failure, it is worth exploring different means to enhance the said law. Simply put, this brings us to the question of whether the adaptation of international law to nuclear risk is relevant. More broadly, our thesis consists in defending that continuous adaptation of law, resulting from the dynamic dialogue between legal science and scientific progress, improves its efficiency and effectiveness. However, the adaptation widely depends on the technological development of nuclear energy, as the atom both limits and extends the scope of international law. This original feature reveals that many difficulties arise when it comes to grasp the complexity of scientific facts. The stakes are high as international nuclear aims at mitigating the effects of a major technological risk in order to preserve the living conditions of mankind

Orientador: Marko Synésio Alves Monteiro / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Geociências / Made available in DSpace on 2018-08-27T18:32:03Z (GMT). No. of bitstreams: 1 Camelo_AnaPaula_D.pdf: 3370664 bytes, checksum: 4bee39bffba4acbf3a874b2e87c4ec77 (MD5) Previous issue date: 2015 / Resumo: O presente trabalho tem por objetivo investigar o Programa Nuclear Brasileiro (PNB) tendo como referência o acidente nuclear de Fukushima. Seu principal objetivo é analisar de que maneira o acidente japonês impactou o PNB. A fim de responder a essa questão, o programa será analisado dentro de um recorte de 10 anos (2004-2014). A reflexão proposta nesta tese está baseada no referencial dos Estudos Sociais da Ciência e da Tecnologia (ESCT), que possibilita a compreensão de controvérsias sociotécnicas para além do determinismo social ou tecnológico. Por meio da mobilização de conceitos como enquadramento, imaginário sociotécnico, risco e governança de Ciência e Tecnologia (C&T), a pesquisa revela como a controvérsia aqui analisada resultou na oportunidade de se examinar não somente aspectos econômicos, tecnológicos, ambientais acerca da energia nuclear, mas também suas dimensões e desafios políticos. Dentre esses desafios e, a partir de perspectivas bem distintas, emergem questionamentos sobre o papel que a energia nuclear desempenha no contexto brasileiro, o futuro do programa e o processo decisório a respeito dessas questões. Apesar da proposta central do trabalho ser essencialmente sobre risco, PNB e o contexto brasileiro, é preciso assinalar que é impossível considerá-la de maneira isolada do que se dá internacionalmente. O trabalho, assim, identifica as principais implicações de Fukushima no contexto internacional, mas está centrado nas disputas instauradas acerca de uma possível revisão do PNB. Destaca, além disso, como as controvérsias sociotécnicas, a exemplo da energia nuclear, demandam ou impõem a discussão sobre a governança da ciência e da tecnologia e do risco no sentido de reconhecer e engajar diferentes atores da sociedade no processo de decisão sobre questões que são complexas. Toda essa reflexão é feita a partir da análise multissituada que possibilitou seguir a polêmica em torno da energia nuclear, reaquecida pelo acidente de Fukushima. Nesse sentido, multiplicidade de dados e atores foi considerada com o intuito de capturar possíveis disputas instauradas em torno do programa e do seu futuro / Abstract: This research aims to investigate the Brazilian Nuclear Program (PNB) stating as reference the Fukushima nuclear accident. Its main purpose is to analyze how the Japanese accident impacted the PNB. Therefore, the program will be analyzed within 10-years (2004-2014) in order to answer this question. The discussion launched in this thesis is based on the framework of the Social Studies of Science and Technology, which enables the understanding of socio-technical controversies beyond the social or technological determinism. Through the discussion of the concepts of framings, socio-technical imaginary, risk and governance of science and technology, the research shows how the controversy in focus has resulted in the opportunity to consider not only economic, technological, environmental issues about nuclear energy but also its political dimensions and challenges. Among these challenges, and from very different perspectives, we identified questions about the role nuclear energy plays in the Brazilian context, the future of the program and the decision-making process on these issues. Despite the central purpose of this study is essentially on risks, PNB and on the Brazilian context, it should be pointed that it is impossible to consider it in isolation of what is happening internationally (considering interests, tensions, relations between actors, etc.) The research thereby identifies key implications of Fukushima in the international context but focuses on the disputes regarding possible review of the PNB. It also highlights how the socio-technical controversies, such as the nuclear energy, demand or impose a discussion on the governance of science and technology, risk and on the engagement of different sectors and actors in decision-making on issues, that are at the same time about energy, technology and nationality relevance. All this reflection is made from a multi-sited analysis, which allowed following the controversy surrounding nuclear energy, reheated by the Fukushima accident. A variety of data and actors were considered in this sense, in order to capture possible disputes introduced around the program and its future / Doutorado / Politica Cientifica e Tecnologica / Doutora em Política Científica e Tecnológica

This diploma thesis deals with the elaboration of proposals or improvements in marketing communication of the Dukovany nuclear power plant. The thesis is divided into three main parts. The first part includes necessary theoretical resources for building a communication strategy. The second part comprises of various analyses, which are necessary to obtain information for the concluding part of the thesis. The proposal of the communication strategy itself is based on conclusions of the analyses focused on communication of the operator of the Dukovany NPP and on the selected communication tools currently used by this power plant. It is also based on the data acquired from the quantitative survey conducted with the purpose of finding out the actual public perception of the Dukovany NPP amongst young people and their attitude towards nuclear energy in general.

The diploma thesis examines the effect of decommissioning of nuclear power plants on the energy security of two European countries - Germany and the Czech Republic. First, the author focuses on theoretical anchoring of energy security. The practical part then examines both countries from the perspective of their energy mixes and policies and infrastructure interconnection. This is the starting point for the comparison of the effects of the decommissioning of nuclear power plants. Second, the author presents three scenarios to replace nuclear energy, exploring how German and Czech energy security will change. The first scenario is the use of renewable energy only. The second option is a combination of renewable energy and coal. Finally, the third option is again a certain proportion of renewable energy along with natural gas. Last but not least, the author concludes in the presented paper that, despite the various possible combinations of how to replace nuclear energy, both countries would be worse off within the framework of energy security.

This master thesis examines how the Fukushima accident has affected the French energy policy and the impact on the perception of nuclear energy by policymakers, the public and energy companies. Nuclear energy does comprises three-quarters of the total electricity production in the country and thus forms the backbone of the energy mix in France. The study uses comparative analysis as a main approach, to compare public discourse of state actors (in particular the President, the Ministry of Energy and Nuclear Safety Agency) and the French energy companies before and after the accident from March 11, 2011. At the beginning, the study refers on the position of nuclear energy in the world, historical development of nuclear energy in France and its importance for the energy security of the country. It also describes the Fukushima accident and its immediate consequences on nuclear energy worldwide. In a research section it presents a summary of France's energy policy before the Fukushima accident, in which emphasis was placed on maintaining a high share of nuclear energy in the energy mix of the country. In the next part of the research is described the French energy policy after the accident and subsequently the prospect of possible change of energy strategy of France.

[ES] La forma más exacta de conocer el desplazamiento de los neutrones a través de un medio material se consigue resolviendo la Ecuación del Transporte Neutrónico. Tres diferentes aproximaciones de esta ecuación se han investigado en esta tesis: Ecuación del transporte neutrónico resuelta por el método de Ordenadas Discretas, Ecuación de la Difusión y Ecuación de Armónicos Esféricos Simplificados. Para resolver estás ecuaciones se estudian diferentes esquemas del Método de Diferencias Finitas. La solución a estas ecuaciones describe la población de neutrones y las reacciones ocasionadas dentro de un reactor nuclear. A su vez, estas variables están relacionadas con el flujo y la potencia, parámetros fundamentales para el Análisis de Seguridad Nuclear. La tesis introduce la definición de las ecuaciones mencionadas y en particular se detallan para el estado estacionario. Se plantea el Método Modal como solución a los problemas de autovalores definidos por dichas ecuaciones. Primero se desarrollan varios algoritmos para la resolución del estado estacionario de la Ecuación del Transporte de Neutrones con el Método de Ordenadas Discretas para la discretización angular y el Método de Diferencias Finitas para la discretización espacial. Se ha implementado una formulación capaz de resolver el problema de autovalores para cualquier número de grupos energéticos con upscattering y anisotropía. Varias cuadraturas utilizadas por este método en su resolución angular han sido estudiadas e implementadas para cualquier orden de aproximación de Ordenadas Discretas. Además, otra formulación se desarrolla para la solución del problema fuente de la ecuación del transporte neutrónico. A continuación, se lleva a cabo un algoritmo que permite resolver la Ecuación de la Difusión de Neutrones con dos variantes del método de diferencias Finitas, una centrada en celda y otra en vértice o nodo. Se utiliza también el Método Modal calculando cualquier número de autovalores para varios grupos de energía y con upscattering. También se implementan los dos esquemas del Método de Diferencias Finitas anteriormente mencionados en el desarrollo de diferentes algoritmos para resolver las Ecuaciones de Armónicos Esféricos Simplificados. Además, se ha realizado un análisis de diferentes aproximaciones de las condiciones de contorno. Finalmente, se han realizado cálculos de la constante de multiplicación, los modos subcríticos, el flujo neutrónico y la potencia para diferentes tipos de reactores nucleares. Estas variables resultan esenciales en Análisis de Seguridad Nuclear. Además, se han realizado diferentes estudios de sensibilidad de parámetros como tamaño de malla, orden utilizado en cuadraturas o tipo de cuadraturas. / [CA] La forma més exacta de conèixer el desplaçament dels neutrons a través d'un mitjà material s'aconsegueix resolent l'Equació del Transport Neutrònic. Tres diferents aproximacions d'esta equació s'han investigat en aquesta tesi: Equació del Transport Neutrònic resolta pel mètode d'Ordenades Discretes, Equació de la Difusió i Equació d'Ármonics Esfèrics Simplificats. Per a resoldre estes equacions s'estudien diferents esquemes del Mètode de Diferències Finites. La solució a estes equacions descriu la població de neutrons i les reaccions ocasionades dins d'un reactor nuclear. Al seu torn, estes variables estan relacionades amb el flux i la potència, paràmetres fonamentals per a l'Anàlisi de Seguretat Nuclear. La tesi introduïx la definició de les equacions mencionades i en particular es detallen per a l'estat estacionari. Es planteja el Mètode Modal com a solució als problemes d'autovalors definits per les dites equacions. Primer es desenvolupen diversos algoritmes per a la resolució de l'estat estacionari de l'Equació del Transport de Neutrons amb el Mètode d'Ordenades Discretes per a la discretiztació angular i el Mètode de Diferències Finites per a la discretització espacial. S'ha implementat una formulació capaç de resoldre el problema d'autovalors per a qualsevol nombre de grups energètics amb upscattering i anisotropia. Diverses quadratures utilitzades per este mètode en la seua resolució angular han sigut estudiades i implementades per a qualsevol orde d'aproximació d'Ordenades Discretes. A més, una altra formulació es desenvolupa per a la solució del problema font de l'Equació del Transport Neutrònic. A continuació, es du a terme un algoritme que permet resoldre l'Equació de la Difusió de Neutrons amb dos variants del mètode de Diferències Finites, una centrada en cel·la i una altra en vèrtex o node. S'utilitza també el Mètode Modal calculant qualsevol nombre d'autovalors per a diversos grups d'energia i amb upscattering. També s'implementen els dos esquemes del Mètode de Diferències Finites anteriorment mencionats en el desenvolupament de diferents algoritmes per a resoldre les Equacions d'Harmònics Esfèrics Simplificats. A més, s'ha realitzat una anàlisi de diferents aproximacions de les condicions de contorn. Finalment, s'han realitzat càlculs de la constant de multiplicació, els modes subcrítics, el flux neutrònic i la potència per a diferents tipus de reactors nuclears. Estes variables resulten essencials en Anàlisi de Seguretat Nuclear. A més, s'han realitzat diferents estudis de sensibilitat de paràmetres com la grandària de malla, orde utilitzat en quadratures o tipus de quadratures. / [EN] The most accurate way to know the movement of the neutrons through matter is achieved by solving the Neutron Transport Equation. Three different approaches to solve this equation have been investigated in this thesis: Discrete Ordinates Neutron Transport Equation, Neutron Diffusion Equation and Simplified Spherical Harmonics Equations. In order to solve the equations, different schemes of the Finite Differences Method were studied. The solution of these equations describes the population of neutrons and the occurred reactions inside a nuclear system. These variables are related with the flux and power, fundamental parameters for the Nuclear Safety Analysis. The thesis introduces the definition of the mentioned equations. In particular, they are detailed for the steady state case. The Modal Method is proposed as a solution to the eigenvalue problems determined by the equations. First, several algorithms for the solution of the steady state of the Neutron Transport Equation with the Discrete Ordinates Method for the angular discretization and Finite Difference Method for spatial discretization are developed. A formulation able to solve eigenvalue problems for any number of energy groups, with scattering and anisotropy has been developed. Several quadratures used by this method for the angular discretization have been studied and implemented for any order of approach of the discrete ordinates. Furthermore, an adapted formulation has been developed as a solution of the source problem for the Neutron Transport Equation. Next, an algorithm is carried out that allows to solve the Neutron Diffusion Equation with two variants of the Finite Difference Method, one with cell centered scheme and another edge entered. The Modal method is also used for calculating any number of eigenvalues for several energy groups and upscattering. Both Finite Difference schemes mentioned before are also implemented to solve the Simplified Spherical Harmonics Equations. Moreover, an analysis of different approaches of the boundary conditions is performed. Finally, calculations of the multiplication factor, subcritical modes, neutron flux and the power for different nuclear reactors were carried out. These variables result essential in Nuclear Safety Analysis. In addition, several sensitivity studies of parameters like mesh size, quadrature order or quadrature type were performed. / Me gustaría dar las gracias al Ministerio de Economía, Industria y Competitividad y a la Agencia Estatal de Investigación de España por la concesión de mi contrato predoctoral de formación de personal investigador con referencia BES-2016-076782. La ayuda económica proporcionada por este contrato fue esencial para el desarrollo de esta tesis, así como para el financiamiento de una estancia. / Morato Rafet, S. (2020). Contributions to solve the Multi-group Neutron Transport equation with different Angular Approaches [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/159271 / TESIS