Submitted by Caio Cesar Policelli Amalfi (c_amalfi@hotmail.com) on 2017-12-06T19:19:26Z No. of bitstreams: 1 amalfi_ccp_me_eng_int.pdf: 2459316 bytes, checksum: 945ef161efa25c84f202bbd2b7a8fd7b (MD5) / Approved for entry into archive by Minervina Teixeira Lopes null (vina_lopes@bauru.unesp.br) on 2017-12-07T12:24:46Z (GMT) No. of bitstreams: 1 amalfi_ccp_me_bauru.pdf: 2459324 bytes, checksum: 6c5471ff71b8b95a377f4453ebaa4162 (MD5) / Made available in DSpace on 2017-12-07T12:24:46Z (GMT). No. of bitstreams: 1 amalfi_ccp_me_bauru.pdf: 2459324 bytes, checksum: 6c5471ff71b8b95a377f4453ebaa4162 (MD5) Previous issue date: 2017-10-27 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A alta complexidade atrelada às necessidades de segurança e confiabilidade dos processos industriais têm demandado a implantação de sistemas automáticos de segurança. Esse sistema, conhecido como Sistema Instrumentado de Segurança (SIS), é responsável pela segurança operacional do processo dentro de limites seguros através da monitoração de valores e parâmetros quando houver condições de risco. Os SISs são concebidos com diferentes Níveis de Integridade de Segurança (SIL) de acordo com o risco do processo. O desafio na implantação de um SIS é que seu procedimento de projeto é complexo e pouco difundido, além de existirem diversos métodos de cálculo e análise de riscos aceitos pelas normas de segurança. A motivação para este trabalho foi automatizar e auxiliar o projeto de SIS no que diz respeito à redução da quantidade de pessoas envolvidas e de tarefas manuais que podem causar erros, à padronização e simplificação dos procedimentos e cálculos necessários e também à diminuição do tempo de projeto, promovendo um aumento na eficiência e redução dos custos envolvidos. O objetivo é desenvolver uma ferramenta de análise e projeto de SIS, com programação voltada para Web, capaz realizar um estudo de riscos e falhas de um processo industrial e calcular um valor adequado para a seleção do SIL requerido para implantação de um sistema de segurança. A ferramenta é composta de quatro módulos: o Estudo de riscos e falhas usando a técnica HAZOP, a Quantificação dos riscos e criação de árvores de falhas; a Obtenção do SIL através da Análise da Árvores de Falhas (AAF) e a Definição de uma Função Instrumentada de Segurança (SIF) apropriada para o SIL calculado. A ferramenta desenvolvida é inovadora ao automatizar e combinar no mesmo ambiente todos os procedimentos necessários para a análise e projeto de SIS. Diversos casos de estudo de projeto de SIS, sendo um caso industrial real e outros da literatura, são utilizados para teste e validação dos módulos da ferramenta afim de demonstrar sua eficiência, flexibilidade de uso e exatidão dos resultados obtidos com a sua aplicação. / The high complexity tied to the reliability and security requirements of industrial processes has demanded the deployment of automatic safety systems. This system is known as Safety Instrumented Systems (SIS) and is responsible for the process operational safety within safe limits through the monitoring of values and parameters when there are conditions of risk. The SIS is designed with different Safety Integrity Levels (SIL) according to the process risk. The challenge in the deployment of SIS is that the design procedure is complex and not well known, and there are many calculation and risk analysis methods accepted by the safety standards. The motivation was automating and assisting in the design of SIS with regard to the reduction of people involved and manual tasks that may cause errors, the standardization and simplification of procedures and calculations needed and the reduction in project time, promoting an increase in efficiency and reducing the costs. The objective was developing an analysis and design tool for SIS, with web-based programming, capable of performing a study of the risks and failures of an industrial process and calculating an adequate value for the selection of the Safety Integrity Level (SIL) required for the implementation of the safety system. The tool is comprised of four modules: the Study of risks and failures using the HAZOP technique, the Quantification of risks and creation of fault trees; the SIL calculation through the Fault Tree Analysis (FTA) and the Definition of a Safety Instrumented Function (SIF) suitable for SIL calculated. The developed tool is innovative by systemizing and combining in the same environment all the procedures required for the analysis and design of SIS. Several case studies of SIS design are used for testing and validation of the tool modules, considering a real industrial case and others cases in the literature, in order to demonstrate the efficiency, flexibility of use, and accuracy of the results obtained with the tool application. / 1649039

Eaton created a new safety controller architecture to allow our customers to design implement, verify and maintain a SIL-2 safety certified application for compliance with IEC 61508:2010 and ISO 13849 Functional Safety Standards. The new architecture has been implemented in a line of safety controllers SFX12 and SFX20 that extend the line of existing mobile controllers HFX12 to HFX48. The new controllers are targeted for controlling mobile and stationary machine applications with focus on steer by wire and propel by wire.

L'introduction de systèmes instrumentés dédiés aux applications de sécurité impose l'évaluation de leur sûreté de fonctionnement. On utilise généralement pour cela les bases de données de fiabilité génériques. Cependant, le retour d'expérience pour ces systèmes qui présentent en général des défaillances rares est insuffisant pour valider les résultats obtenus. En outre, la collecte de données de fiabilité et leur extrapolation à d'autres composants introduisent des incertitudes. Les travaux de cette thèse portent sur la problématique de la prise en compte des incertitudes relatives aux données de fiabilité des composants pour l'évaluation de la sûreté de fonctionnement des systèmes par le formalisme des sous ensembles flous. La méthodologie proposée est appliquée à l'évaluation des probabilités de défaillance des Systèmes Instrumentés de Sécurité (SIS) en présence de données de fiabilité imprécises. Nous introduisons deux nouveaux facteurs d'importance pour aider le concepteur. En outre, nous proposons une méthodologie d'aide à la conception des SIS basée sur la modélisation par réseaux de fiabilité et l'optimisation par des algorithmes génétiques de la structure des SIS pour le respect des niveaux d'intégrité de sécurité (SIL) exigés / The use of safety related systems imposes to evaluate their dependability. Laboratory data and generic data are often used to provide failure data of safety components to evaluate their dependability parameters. However, due to the lower solicitation of safety systems in plant, safety components have not been operating long enough to provide statistical valid failure data. Furthermore, measuring and collecting failure data have uncertainty associated with them, and borrowing data from laboratory and generic data sources involve uncertainty as well. Our contribution is to propose a fuzzy approach to evaluate dependability parameters of safety systems when there is an uncertainty about dependability parameters of systems components. This approach is applied to determine the failure probability on demand of Safety Instrumented Systems (SIS) in presence of uncertainty. Furthermore, we present an optimal design of SIS by using reliability graphs and genetic algorithms to identify the choice of components and design configuration in a SIS to meet the required SIL

This master thesis examines the functional safety of the pressure sensor XMP i which is produced by BD SENSORS Company. The aim of this thesis is the demonstration of compliance of the pressure sensor XMP I with functional safety integrity level SIL3 requirements. The thesis is divided into three parts. The first part deals with the concept of functional safety, defines the basic concepts of functional safety, compares the approaches of functional safety according to selected standards and provides a general procedure for the functional safety determination. The second part deal with technical systems reliability defines reliability indicators and describes selected types of reliability analysis used in practice, especially the FMEA/FMECA analysis. Third part deals with the reliability analysis of the sensor XMP i and with evaluation of results.

This thesis describes what the theatre is and what types of machinery can be found there. Then the issue of stage technical machinery is presented into the czech context, respectively into the Europian legislation with the emphasis on the technical norms usage, which are necessary to fulfil in order to reach this aim. In the next part of the thesis is made the analysis of control systems, which are used in the stage technics with the emphasis on the functionality of these control systems, since this functionality determines number and range of possible danger and dangerous events, later on. These dangerous situations are named and specified in detail, thereby their existence, importance and necessity of solution is being emphasized. There is also a possible solution outlined that these dangerous events can be solved in many cases by using of these programmable systems relating to the safety, thereby safety functions realized by these functions. Then the single steps are described into V-model with appropriate documents of these V-model steps. Outcome of this thesis will be suggested model of method and its development and software validation for programmable and control systems in theatre technology.