La presente tesis tiene como objetivo ser guía en el análisis e interpretación de las causas de los Costos de No Calidad para los futuros proyectos del sector construcción, tomando como fuente de información el proyecto de viviendas multifamiliares: “Nuevo Alcázar Condominio”, ubicada en el distrito del Rímac en la ciudad de Lima. La tesis se desarrolló de acuerdo a la información de la Primera Etapa comprendida por los Edificios 17, 18 y 19; las principales fuentes de información fueron los registros de las No Conformidades en el proceso de ejecución de la obra, la data del programa S10 que nos fue de ayuda para obtener los costos reales acumulados, la data del programa PLANOK, del cual se obtuvo el registro de observaciones de los propietarios desde la puesta en servicio del proyecto, el reporte operativo de costos acumulado a Agosto 2015, el registro de adicionales y control de cambios durante la ejecución del proyecto, estas herramientas fueron piezas claves para el análisis de esta investigación. Para el caso estudiado, se concluyó del objetivo general que los costos de no calidad influyen en el margen de utilidad cuando se realiza un presupuesto sincerado, de los objetivos específicos se concluye que la calidad se debe desarrollar desde el diseño del proyecto y no solo durante la etapa de ejecución, ya que los errores o incompatibilizaciones en los planos generan adicionales de obra y se analizaron que las partidas de control que representaron una mayor ganancia fueron las que obtuvieron mayores observaciones en la puesta en servicio del proyecto. The objective of this investigation is to be a guide in the analysis and interpretation of the causes of non-quality costs for future projects in the construction sector, using as information the project: “Nuevo Alcázar Condominio", located in the district of Rimac in Lima. The investigation was developed according to information of the first phase comprised of Buildings 17, 18 and 19; the main sources of information were records of nonconformity in the process of execution of the project, the data of the S10 program that was helpful to us for actual costs accumulated, dates from PLANOK program, which recording observations of the owners was obtained from the commissioning of the project, operating costs accumulated report in August 2015, additional registration and change control during project implementation, these were important tools for the analysis of this research. For the case study, it was concluded from general object that the costs of not quality affect the profit margin when the budget is exact, the specific objectives that quality is important from the design of the project and not only in the implementation phase, so that the fault on drawings generate additional work and we analyzed the control items accounted for a larger gain were the major observations obtained in the service of the project.

Submitted by JOSIANE SANTOS DE OLIVEIRA (josianeso) on 2017-05-22T13:46:14Z No. of bitstreams: 1 Rossano Santos Noronha_.pdf: 585085 bytes, checksum: 88117b318c3e9c30134fce5bf0bdc22e (MD5) / Made available in DSpace on 2017-05-22T13:46:14Z (GMT). No. of bitstreams: 1 Rossano Santos Noronha_.pdf: 585085 bytes, checksum: 88117b318c3e9c30134fce5bf0bdc22e (MD5) Previous issue date: 2017-03-07 / CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Devido à dificuldade em se estimar os custos de operação associados ao monitoramento estatístico do processo nos trabalhos identificados na literatura, este trabalho tem por objetivo propor um modelo de otimização econômico para a carta de controle _X que considere as incertezas em relação aos custos variáveis e dependentes do desvio em relação à média do processo. O levantamento bibliográfico efetuado auxiliou no entendimento de como a incerteza em relação aos custos na utilização das cartas de controle são tratados. Percebeu-se o tratamento dos custos bem como do parâmetro de desvio do processo em relação a média _ como variáveis discretas e que impactavam na carta. A proposta aqui apresentada consiste em tratar não apenas o desvio em relação a média mas também dois dos custos associados à operação da carta de controle _X como variáveis aleatórias de distribuição contínua, inserindo assim um componente de incerteza na sua estimação. Desenvolveu-se assim uma nova formulação para o problema de otimização. Foram escolhidas instâncias para a otimização e comparados os resultados com os obtidos por autores da literatura. Os resultados foram obtidos por meio da metaheurística simulated annealing. Como resultados, o método mostrou-se eficiente, mostrando que o nível de dependência entre o parâmetro de mudança de processo e o custo e, da incerteza que se tem quanto aos valores definidos de custo de operação impactam nos custos totais de operação do CEP. A principal contribuição deste trabalho de pesquisa está na apresentação de uma formulação matemática de otimização da carta de controle _X que trata não somente o desvio em relação à média do processo mas também os custos de operação do CEP como variáveis aleatórias. A originalidade da formulação está em considerar os custos linearmente dependentes do tamanho do desvio do processo em relação a sua média. / Due to the difficulty in estimating the operating costs associated to the statistical monitoring of the process described in the literature, this paper aims to propose a model of economic optimization for the _X control chart that considers the uncertainties in relation to the variable costs and dependent on the deviation in relation to the average of the process. The literature review performed supported the understanding of how the uncertainty in relation to costs in the use of control charts is treated. The treatment of the costs as well as the parameter of deviation of the process in relation to the _ average were indicated as discrete variables and that impacted on the chart. The proposal presented here consists of treating not only the deviation from the mean but also two costs associated with the operation of the _X control chart as random variables of continuous distribution, thus inserting a component of uncertainty in its estimation. A new formulation for the optimization problem was developed. Instances for optimization were chosen and the results were compared with those obtained by authors described in the literature. The results were obtained through simulated annealing metaheuristics. As a result, the method proved to be efficient, showing that the level of dependence between the process change parameter and the cost, as well as the uncertainty regarding the defined operating cost values impact on the total cost of operation of the SPC. The main contribution of this research work is the presentation of a mathematical formulation of optimization of the _X control chart that treats not only the deviation in relation to the average of the process but also the operating costs of the SPC as random variables. The originality of the formulation is to consider costs linearly dependent on the size of the process deviation in relation to its mean.

Η ποιότητα, άρα και ο τρόπος παρακολούθησης της, δηλαδή ο ποιοτικός έλεγχος, σχετίζεται άμεσα με την κερδοφορία μιας επιχείρησης• είτε αυτό επιτευχθεί μέσω αύξησης των πωλήσεων είτε μέσω μείωσης του κόστους παραγωγής ή παροχής υπηρεσιών. Ολοένα και περισσότερο γίνεται αποδεκτό το γεγονός ότι η υψηλή ποιότητα του προϊόντος και των υπηρεσιών και η σύνδεσή τους με την ικανοποίηση του πελάτη, είναι το κλειδί για την επιβίωση οποιασδήποτε επιχείρησης. Επομένως, κρίνεται επιτακτική ανάγκη η μελέτη και έρευνα γύρω από την σχέση της ποιότητας και των επιχειρήσεων και ειδικά σε περιόδους οικονομικής κρίσης και έντονων πιέσεων των καταναλωτών και της αγοράς. Σκοπός της παρούσας εργασίας είναι να παρουσιάσει τη μεθοδολογία σχεδιασμού ενός συστήματος ποιοτικού ελέγχου με τη χρήση μεθόδων πολυκριτηριακής ανάλυσης και να γίνει σύγκριση αυτών των μεθόδων. / The purpose of this thesis is to describe the methodology of a Quality Control System planning using methods of multictiteria analysis and to compare these methods.

O objetivo geral deste trabalho é estudar em uma indústria automotiva a redução dos custos de refugos e retrabalhos causados por não qualidade de fabricação ou devido a anomalias nos transportes das peças compradas de fornecedores da Europa. Para a obtenção dos resultados, o método utilizado inicialmente foi a pesquisa bibliográfica fornecendo a base para o estudo de caso descritivo em uma indústria automotiva. Este trabalho teve como finalidade a pesquisa aplicada, pois foi motivada pela resolução de um problema concreto, que é a redução destes custos. Inspirado nas ferramentas da Manufatura Enxuta foi criado um grupo de trabalho para elaborar um procedimento de re-faturamento dos custos de não qualidade dos fornecedores da Europa e aplicado a metodologia Hoshin para a melhoria nos processos da seguradora em caso de sinistros nos transportes destes fornecedores. Para resolver estes problemas as ferramentas da qualidade foram amplamente utilizadas. Foi possível re-faturar os fornecedores Externos da Europa em cerca de R$ 635.000,00 e reduzir R$ 305.312,00 de custos com refugos dos Fornecedores Internos da Europa. A aplicação do procedimento estimulou os Fornecedores Internos e Externos e o custo mensal com refugos considerando o re-faturamento passou de R$ 86.973,00 para R$ 10.104,00. O custo por veículo foi de R$ 10,32 para R$ 3,74. O ganho total somado até 2009 foi de R$ 1.238.476,00. / The general purpose of this work is to study, in an automotive industry, the reduction of the costs of scrap and rework caused by no manufacturing quality or due to deficiencies in transport parts purchased from suppliers in Europe. To obtain the results the method was initially used to search bibliographic providing the basis for the descriptive case study in an automotive industry. This study was aimed at applied research, because it was motivated by solving a real problem, which is the reduction of these costs. Inspired by the tools of Lean Manufacturing it was created a working group to develop a procedure for invoicing again the not quality costs from European suppliers as well as the methodology was applied Hoshin to improve the processes of insurer in case of accidents in transport of these suppliers. To solve these problems the quality tools have been widely used. It was possible to invoice again from external suppliers in Europe about R$ 635.000,00 and lower R$ 305.312,00 in costs with scraps of domestic suppliers in Europe. Applying the procedure prompted the internal and external suppliers and the monthly cost with scrap considering the re-sales rose from R$ 86.973,00 to R$ 10.104,00. The cost per vehicle was R$ 10,32 to R$ 3,74. The gain added by 2009 was R$ 1.238.476,00.

The quality of products is the biggest competitive advantage that a company can achieve. The definition states that quality is the degree of compliance requirement with a set of inherent characteristics. The importance of quality have very increased in recent years - quality is a decisive factor for stable economic growth of enterprises, management quality is the most important protective factor of the loss of markets, quality is a major source of saving materials and energy, the quality affects of macroeconomic indicators, the quality is a limiting factor for the sustainable development , quality and consumer protection are connected vessels. Quality costs are the total costs incurred by producers, users and companies associated with the quality of the product. The quality costs of the manufacturer is divided into four basic groups: the costs of prevention, assessment, costs of external defects and internal defects.