https://repositorio.ufba.br/handle/ri/24099 Tue, 05 May 2026 06:34:05 GMT 2026-05-05T06:34:05Z https://repositorio.ufba.br/handle/ri/44099 Título: Estudo do estágio de maturidade da cultura de segurança de uma rede de revendas de GLP em Salvador - Bahia Autor(es): Mendes, Allen Greyson Gomes Primeiro Orientador: Gonçalves Filho, Anastácio Pinto Abstract: The Liquefied Petroleum Gas (LPG) distribution industry in Brazil faces significant challenges regarding operational safety, particularly within reseller networks. Despite the product’s importance for the national energy matrix and both residential and commercial supply, incidents related to inadequate handling, lack of standardized procedures, and the low maturity level of safety culture are still recurrent in part of the sector. In this context, the present study aimed to study the maturity stage of the safety culture in an LPG reseller network located in Salvador, Bahia. The research is grounded in well-established theoretical models that conceptualize safety culture as a set of values, practices, and collective behaviors that evolve through maturity stages. A mixed-methods approach was employed, combining quantitative and qualitative techniques. Data collection involved questionnaires covering six dimensions (leadership, commitment, involvement, information, communication, and organizational learning), along with a documentary evidence checklist. The sample consisted of 289 workers from 82 reseller companies. Results indicated an intermediate stage of safety culture maturity, between the reactive and bureaucratic stages, with significant variations across sociodemographic and organizational profiles. Positive correlations were identified between safety culture maturity and education level, age, and length of employment. Smaller resellers demonstrated higher levels of safety culture maturity. The findings suggest that advancing the maturity of safety culture within resellers depends on consolidating clear policies, implementing continuous training programs, and strengthening safety-oriented leadership. Furthermore, the development of monitoring tools and performance indicators is recommended to systematically track safety culture progress. This study contributes to the understanding of the current panorama of safety culture in the LPG distribution sector and provides practical insights for managers seeking to enhance operational reliability and reduce risks associated with reseller activities. Editora / Evento / Instituição: Universidade Federal da Bahia Tipo: Dissertação Fri, 01 Feb 0004 00:00:00 GMT https://repositorio.ufba.br/handle/ri/44099 0004-02-01T00:00:00Z https://repositorio.ufba.br/handle/ri/43945 Título: Detecção de outliers em dados de alta dimensionalidade em processos químicos Autor(es): Souza, Lucas Silva Primeiro Orientador: Sant'Anna, Ângelo Márcio Oliveira Abstract: Chemical processes are characterized by high operational complexity, simultaneous monitoring of multiple process variables, as well as require high levels of reliability, stability, and rapid response to deviations. In this context, the early identification of outliers is essential to mitigate operational and financial impacts. This study proposes a method grounded in classical approaches for identifying out of control observations in sample groups, employing Principal Component Analysis (PCA) and Biplots to detect outliers in multivariate data from real petrochemical process. The proposed approach aims to address gaps in the existing literature by offering a solution applicable across different organizational hierarchies, including teams without advanced statistical expertise. The method relies on the Euclidean distance in the first plane of a GH-Biplot, which approximates the Mahalanobis distance, thereby providing a more suitable representation for correlated variables. Moreover, the methodology does not depend on distributional assumptions, making it robust and applicable to a wide range of scenarios. However, it required a clear reference of in control process behavior to allow develpoment. The visual nature of the approach further facilitates the detection of outliers and the identification of emerging patterns in high-dimensional data. The proposed method was evaluated using three real-world datasets. The first corresponds to the case study introduced in this work, while the other two are publicly available datasets, which are widely used in the literature, both containing explicitly labeled outliers. The results indicate that the proposed approach was effective in detecting outliers, achieving an accuracy greater than 70% across all three datasets evaluated. Editora / Evento / Instituição: Universidade Federal da Bahia Tipo: Dissertação Tue, 16 Dec 2025 00:00:00 GMT https://repositorio.ufba.br/handle/ri/43945 2025-12-16T00:00:00Z https://repositorio.ufba.br/handle/ri/43786 Título: Impactos do Lean Safety com a Certificação da norma ISO 45001:2018 em indústrias manufatureiras. Autor(es): Menezes, Michelle de Oliveira Primeiro Orientador: Pimentel, Cristiane Agra Abstract: Brazil loses productivity and resources year after year due to work accidents, also compromising the integrity and lives of thousands of people. According to the guidelines of the ISO 45001:2018 standard, an occupational health and safety management system structured according to the standard can help organizations minimize or eliminate risks and hazards, contributing to accident prevention. Lean tools, fundamentally designed for operational excellence through increased efficiency and waste reduction, can be applied in this context. Therefore, the objective of this study is to associate, highlighting for each requirement of the standard, which Lean Safety tools can aid their implementation in the manufacturing industry, based on the results of the Analytic Hierarchy Process (AHP) matrix. The methods employed included bibliometric research using R software with selected keywords: "Lean" OR "Lean Thinking" AND "safety" OR "ISO 45001" AND "industry" OR "manufacturing". Subsequently, the AHP matrix was applied as a decision-making approach to associate tools and requirements. The results indicated that the most associated requirements were Operation, Improvement, and Planning, with the corresponding tools showing the highest weights being 5S, Single Minute Exchange of Die (SMED), Value Stream Mapping (VSM), and Poka Yoke. The AHP mapping demonstrates synergy between Lean Safety and ISO 45001, facilitating certification through contextual analysis, modification of working conditions, and safety mindset development. Despite the limitation of single-expert judgment, it provides a practical basis for systemic or targeted implementation, enhancing occupational health and safety (OHS) in manufacturing. Empirical validation using the Delphi method, joint cost analysis, and trends such as sustainability and new technologies are suggested. Editora / Evento / Instituição: Universidade Federal da Bahia Tipo: Dissertação Thu, 11 Dec 2025 00:00:00 GMT https://repositorio.ufba.br/handle/ri/43786 2025-12-11T00:00:00Z https://repositorio.ufba.br/handle/ri/39843 Título: Desastres enviam sinais: estudo de caso de Brumadinho Autor(es): Brito, Graciene Santos Primeiro Orientador: Gonçalves Filho, Anastácio Pinto Abstract: The disaster in Brumadinho/Brazil, caused by the collapse of Dam I of mining tailings owned by the company Vale S/A (Vale), is considered the biggest industrial disaster in the history of Brazil, as it claimed the lives of hundreds of people, including Vale’s own workers, third parties and residents of the community surrounding the organisation, as well as causing an unprecedented environmental impact. Many studies have approached Brumadinho disaster from different perspectives, but none of them have tackled it from the point of view of a Disaster Theory. This research therefore sheds new light on understanding of the disaster. The aim of this paper is to study the Brumadinho disaster in the light of the Theory of Man-Made Disasters and to identify whether this disaster followed the six stages proposed by the Man-Made Theory and could thus have been prevented. Data sources used included the official investigation report into the accident, carried out by a government body; the report drawn up by an independent committee hired by Vale; in addition to the reports of the Parliamentary Commissions of Inquiry (PCI) of the Federal Senate, the Federal Chamber of Deputies and the Legislative Assembly of Minas Gerais. The existence of the six stages of disaster development was identified during the study. Stage 1 was evidenced by the existence of a belief among the organisation’s employees that Dam I was safe and that there was no risk of a break. Stage 2 was characterised as a long period that began with the construction of the Dam I foundation, since there was no information about its foundation or the material used in the first elevations. Stage 3 was characterised by the exact moment of Dam I break. Stage 4 was evidenced by the consequences caused by the disaster, such as deaths of people and environmental damage. Stage 5 is characterised by the rescue and salvage of victims and was evidenced by the excellent work of government agencies and, on the other hand, by Vale’s lack of preparation in rescue and salvage. Finally, stage 6 was characterised by changes in legislation aimed at the safety of mining tailings dams in Brazil as whole. It can be concluded that the Brumadinho disaster went through the six stages of development, more specifically the incubation period, in which signs that a disaster was about to happen became apparent and consequently measures could have been taken to avoid it. Editora / Evento / Instituição: Universidade Federal da Bahia Tipo: Dissertação Mon, 01 Jan 2024 00:00:00 GMT https://repositorio.ufba.br/handle/ri/39843 2024-01-01T00:00:00Z