448 resultados para NBR 9050


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A globalização, a busca pela qualidade e produtividade, a competitividade do mercado, fizeram com que a Construção civil iniciasse a busca pela melhoria nos processos, visando diminuir o desperdício e as perdas. Por outro lado, as empresas construtoras têm buscado a certificação dos seus sistemas de qualidade, o mesmo ocorrendo, ainda que de forma incipiente, com os fornecedores da indústria da construção civil. Considerando a cadeia produtiva deste setor, os laboratórios de ensaios aparecem ensaiando os produtos que buscam a certificação, realizando controle tecnológico nas obras, caracterizando os materiais utilizados, entre outros, mostrando assim a sua importância tanto para os fornecedores quanto para os construtores. Para garantir melhorias no setor da construção civil, não é importante apenas a implantação de sistemas da qualidade nas empresas construtoras, mas também é de grande relevância a certificação de produtos utilizados. Para tanto, é necessário a existência de laboratórios credenciados que desempenhem o papel de ensaiar o produto. A necessidade da existência de laboratórios credenciados é visível no país, para garantir aspectos referentes à confiabilidade e confidencialidade dos resultados, além da rastreabilidade dos padrões utilizados. Também é importante que a execução dos ensaios seja feita por pessoal treinado e qualificado, com utilização de procedimentos permanentemente revisados e atualizados. O objetivo deste trabalho é levantar as principais dificuldades e não-conformidades vivenciadas pelos laboratórios de ensaios de construção civil para alcançar o credenciamento, identificando-as através de questionários. Este diagnóstico pretende apontar diretrizes que viabilizem o processo de credenciamento de laboratórios de ensaios de construção civil de forma a facilitar a disseminação desta prática em todo o país.

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O Manual de Operação, Uso e Manutenção das Edificações ou, simplificadamente, Manual das Edificações, constitui uma garantia legal para os usuários das edificações. A entrega deste documento pelas empresas e consultas pelos usuários ao Manual contribuem para a redução dos custos da fase de uso da Edificação. Informá-los sobre operação, uso e manutenção através de Manuais confiáveis do ponto de vista técnico, bem como acessíveis e amigáveis para sua compreensão, se faz necessário. A publicação da NBR 14.037/1998, o Código de Defesa do Consumidor e a implantação de Sistema de Gestão da Qualidade têm sido um estímulo às empresas de construção para a elaboração desses Manuais. Neste contexto, o presente trabalho tem como objetivo contribuir para melhoria do fluxo de informação no processo produtivo da construção civil, identificando lacunas a serem supridas na elaboração dos Manuais das Edificações à luz das diretrizes estabelecidas nesta NBR. Para cumprir com o objetivo proposto, inicialmente foi realizada pesquisa exploratória com empresas do subsetor de edificações dos Estado de Alagoas e Rio Grande do Sul através de questionário. Cada questionário foi acompanhado por solicitação de remessa de Manuais das Edificações que a empresa havia desenvolvido para uma avaliação de seu conteúdo, que foi realizada através de lista de verificação. Na segunda fase da pesquisa, também utilizando questionários, foram solicitadas informações sobre experiências e expectativas dos usuários das edificações destes dois Estados sobre esses Manuais das Edificações A existência de dificuldades para elaboração dos Manuais foi evidenciada pelo baixo conhecimento pelos profissionais dos aspectos relacionados a estes documentos, pela avaliação obtida do conteúdo dos mesmos e pelo interesse das empresas em um texto básico que lhe facilite a sua elaboração. Por outro lado, percebe-se que os usuários não têm a cultura de ler os Manuais, acionando as empresas para prestar assistência técnica, mesmo que a solução da solicitação encontra-se, em sua maioria, descritas nos Manuais. De forma geral, pode-se concluir que ainda há muito a ser trabalhado com empresas e usuários para que as informações sejam adequadamente disponibilizadas e utilizadas.

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This study investigates in the National Commission of Nuclear Energy the Institute of Radiation Protection and Dosimetry in terms of perceptions, actions, and posture of the administrative agents which could facilitate the engagement of the employees of that public organization in the TQM implantation, based on NBR ISO 9000. The central question of this research is: which characteristics of the administrative actions and sense of the managerial posture manifested in the implantation, implementation and maintenance for the achievement of objectives and goals of the Quality System-ISO 9000, could contribute to engage the IRD professionals in the process? The research finds prevalence of the Quality technical knowledge over the attention on professionals' managerial posture, identifies a lack in that Norm about how to deal with its administrative requirements in practical terms, driving the researcher to look for support especially in Deming to face the critical reading of that organizational context. The field research was conceived under the paradigm of constructivism, facilitating the description of beliefs, perceptions, feelings and values manifested in the employees discourses, actions and re-actions to establish relations between Quality theory and that concrete reality. A phenomenologic approach, only as a complementary level, was sufficient to favor the researcher insertion in that institution where he is still working, but in the new and contingent role of researcher. To apprehend the organization managerial stile, to comprehend beyond its characteristics and to grasp the orientation of the managerial posture in terms of possibilities for Quality implementation were the core of this study. The TQM theory was interpreted as a living philosophy, an administrative posture the meaning of which is a permanent Quality improvement in the CNEN/IRD management processes in its internal and external organizational relations. The procedural nature of the CNEN/IRD public service legal regime, political implications and performance evaluation which reveals only partially the organizational reality should not obstruct the Institute drive to assume the spirit of serving the public as a Quality management philosophic commitment. Conclusions show some progress reorienting initiatives in organizational management taking place in three different levels: operational, toward the employees' expectations of values and organizational processes integration; HR administration, in search of better communication; strategic, through expectations on a possible visionary leadership". Finally, at the academic level, the perception that future studies in search of the establishment of relationships between TQM and the organization culture can favor new progress."

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Neste trabalho temos o Estudo da Hidrogenação Catalítica de NBR em meio Homogêneo, empregando complexos dos metais de transição. Nos experimentos de hidrogenação foram testados os complexos de paládio e rutênio em duas etapas diferentes. Para estes complexos, foram estudados os efeitos de temperatura, pressão, tempo e concentração de catalisador. Ainda, investigou-se os efeitos do teor de sólido de NBR em solução. Os solventes utilizados foram acetona e metiletilcetona. A Hidrogenação do Butadieno-Acrilonitrila (NBR) foi realizado em escala laboratorial num reator Parr de 1 L. No sistema utilizando o complexo de Paládio, as duplas ligações foram totalmente convertidas nas condições de 60 °C, 27 atm, 2 g de NBR, 58 mg de catalisador e 1 h de reação. Nas reações com o complexo de Rutênio, a conversão total ocorreu nas condições de 140 °C, 40 atm, 10 g de NBR, 60 mg de catalisador e 8 h de reação. As Hidrogenações de NBR mostraram-se efetiva para ambos os catalisadores atingindo a máxima conversão (100% em mol) nos dois sistemas. No entanto, o sistema utilizando catalisador de rutênio mostrou-se mais efetivo e viável para a produção de HNBR em escala industrial.

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This work has as its main purpose to set a model of Quality Management for micro and small companies integrating the management models: Six Sigma strategy to NBR ISO 9001:2000. An exploratory research is developed to collect technical and bibliographical information on both methods, emphasizing their integration. Then, a survey is carried out on 65 analysts/consultants of Quality Management Systems and it has detected, besides other factors, that current methodologies must be associated in order to reach better results. At last, it proposes the Sigma 9001 model, which aims to make it possible for micro and small companies to objectively and with low costs, implement a Quality Management System, able to assure competitive advantage through improvement identification in the processes, as well as an improvement in the companies management

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Low cost seals are made of NBR, Nitrile Butadiene Rubber, a family of unsaturated copolymers that is higher resistant to oils the more content of nitrile have in its composition, although lower its flexibility. In Petroleum Engineering, NBR seal wear can cause fluid leakage and environmental damages, promoting an increasing demand for academic knowledge about polymeric materials candidate to seals submitted to sliding contacts to metal surfaces. This investigation aimed to evaluate tribological responses of a commercial NBR, hardness 73 ± 5 Sh A, polytetrafluoroethylene (PTFE), hardness 60 ± 4 HRE and PTFE with graphite, 68 ± 6 HRE. The testings were performed on a sliding tribometer conceived to explore the tribological performance of stationary polymer plane coupons submitted to rotational cylinder contact surface of steel AISI 52100, 20 ± 1 HRC Hardness, under dry and lubricated (oil SAE 15W40) conditions. After screening testings, the normal load, relative velocity and sliding distance were 3.15 N, 0.8 m/s and 3.2 km, respectively. The temperatures were collected over distances of 3.0±0.5 mm and 750±50 mm far from the contact to evaluate the heating in this referential zone due to contact sliding friction by two thermocouples K type. The polymers were characterized through Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA). The wear mechanisms of the polymer surfaces were analyzed by Scanning Electron Microscopy (SEM) and EDS (Energy-Dispersive X-ray Spectroscopy). NBR referred to the higher values of heating, suggesting higher sliding friction. PTFE and PTFE with graphite showed lower heating, attributed to the delamination mechanism

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Pós-graduação em Engenharia Civil - FEIS

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The aim of this study is to perform a situational analysis of the Laboratory of pulp and paper-UNESP ITAPEVA for conducting proposal the accreditation according to ISO / IEC 17025:2005. The ISO / IEC 17025 establishes the criteria for those laboratories wishing to demonstrate their technical competence, which have an effective quality system and are able to generate technically valid results, establishing a single international standard for certifying the competence of laboratories to carry tests and / or calibrations, including sampling. The case study was conducted on laboratory Pulp and Paper Universidade Estadual Paulista (UNESP), campus Itapeva, where we compared the views of the technician responsible for the laboratory and a regular user. The generated conclusion is that the laboratory is unable to initiate an accreditation process, because it fails the requirements such as quality manual, register of subcontractors, research of customer satisfaction, schedule of internal audits, schedule for completion of critical analysis, profile of the functions required, functions current description, documentation of technical requirements for accommodation and environmental conditions, calibration programs, equipment calibration program, programs calibration standards and reports and / or certificate of test and / or calibration, that are in accordance with ISO / IEC 17025:2005, beyond that there is not the possibility to develop and implement a quality system without the commitment of everyone involved, regardless of the functional hierarchy

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The quality in construction is increasingly a concern in this sector, in view of the occurrence of problems in civil works, even when a contractor is certified by ISO 9001. The ISO 9001 certification does not ensure the maintenance of quality because it only establishes the requirements for a quality management system (QMS) to ensure standardization of processes and products. With the development of ISO 15575, standard performance, the builders took on a quality parameter with the requirements established by this Standard, which must be met. Thus, the implementation of a quality management system (QMS) becomes essential, showing users the concern for quality. This study aimed to verify, through a case study, the impact of NBR 15575 quality construction and how that standard of performance may be the key element of ISO 9001 to ensure quality maintenance of civil works

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The use of environmental management systems - EMS has shown to be a key tool for addressing the environmental aspects and impacts of an organization. The vast majority of EMS based on the requirements of ISO 14001:2004, as it is a globally recognized standard and adopt its recommendations is considered to be a guarantee of fulfilling the basic requirements of an EMS. Despite all the benefits that the system provides, we still find many problems in the implementation of EMS, especially in small and medium enterprises or SME. Most of the difficulties of implementation is related to intrinsic factors that companies of this size have, and issues related to the models and methods used to implement an EMS. Thus, this work aimed to assess whether the guidelines of ISO 14005:2012 meet the needs of SMEs for the effective implementation of an environmental management system. For it has been identified in the relation between SMEs and EMS the majof intrinsic problems of SMEs to implement (PII), such as lack of financial and human resources, and lack of commitment from top management to the SGA. Also was also pointed the main implementation issues related to ISO 14001 (ABNT, 2004) or the models or methods (PIM), highlighting the lack of environmental performance criteria, and the need for a path or sequence of steps for implementation. The study of ISO 14005 (ABNT, 2012) showed that the standard guidelines and implementation examples proposed, include solutions for all problems related to EMS implementation SMEs

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This work brings to its content proposed deployment of a system of quality management in paving asphalt based on the elaboration of a basic training to meet those entering this area of civil engineering at a technical manual for the implementation of major services running on paving of roads. The training was designed to serve both those entering the field of asphalt paving, synthesizing the complex processes involved in paving services and providing an overview of the steps in implementation thereof, as well as entrants must meet the enterprise user of this system, providing them an idea of the method used by the company designing the paving of roads. The technical manual presented in turn, has 8 (eight) of the main services components of a work of paving, which are: Mobilization and Maintenance of construction site, Regularization and subfloor preparation, execution or sub-base BGS base (graded gravel plain), Execution of sub-base or base BGTC (graded gravel treated with cement), Implementation of subbase or base Macadam hydraulic Priming bituminous waterproofing, asphalt binder Priming and finally the execution flexible pavement - HMA (hot milled asphalt concrete). These services are presented in the form of IT-Education work, this seven items are presented that guide the performance of services, thus providing overall guidelines to perform the services described in it. The development of IT's was based on experiences in day-to-day paving near the theoretical precepts presented in the literature, so the conditions specified in these documents aim to always guide the implementation of services in general, giving the process a versatility major operation, as this work takes into account the dynamics of such services, as well as the variety of their execution according to local conditions and specified in the project. So in general we can say that this ... (Complete abstract click electronic access below)