Journal of Lean Systems

Barriers to lean construction: a systematic literature review

Aline Patricia Mano — 2024-06-26

Lean Construction (LC) is a philosophy aimed at enhancing process efficiency and reducing waste in the construction industry. LC emerged from applying and adapting Lean Manufacturing concepts to construction. The term LC gained prominence in 1992 following the publication of "Technical Report No. 72 – Application of the New Production Philosophy to Construction," by Lauri Koskela. Given that these concepts originated in manufacturing, certain characteristics of the construction industry can prevent their application, acting as barriers that hinder Lean Construction's implementation. Recognizing and identifying the difficulties associated with LC practice can serve as input for organizations to prepare themselves, thereby increasing the chances of successful LC implementation. In this context, the goal of this research was to identify barriers to LC mentioned in scientific articles since 2010. The methodology employed was the systematic literature review (SLR) technique, along with bibliometric data analysis. The SLR was conducted using the Scopus and Emerald databases. Sixty articles were selected in the SLR from which forty barriers to LC were extracted, in different countries and contexts, such as: difficulty in obtaining support and commitment from senior management, resistance to change by leadership, lack of good communication, unskilled labor, lack of knowledge about lean construction philosophy, among others.

Tendências de pesquisa em Construção Enxuta: uma revisão sistemática de literatura

Luiza Moreira — 2024-06-26

The construction industry has a significant impact on a country’s economy. However, it faces challenges related to all three aspects of sustainability, particularly due to waste generation and inefficiencies. In this context, Lean Construction serves as a management philosophy that aims to reduce waste, enhance construction efficiency, and deliver high-quality products. Despite its benefits, uncertainties persist regarding the implementation of Lean principles and their interactions within the construction sector. The objective of this study is to analyze research trends related to Lean Construction through a systematic literature review (SLR) between 1992 and 2022. After applying filters, 215 out of 601 articles were selected for critical reading and content analysis. The SLR revealed valuable insights into these trends, including main researchers, research methods, and geographical regions. Additionally, it explored the primary tools used in construction, the interplay between Lean Construction and other approaches, and existing research gaps in the field.

BPM and Lean to improve the production process of an engineer-to-order metalworking industry

Júlia Pery Cittadella — 2024-06-26

The present article describes how the mapping of the production process of a metalworking industry was carried out and the results obtained through it, using BPM, BPMN, Bizagi, Lean, GUT Matrix, 5W2H, and Brainstorming. The objective of this work comprises presenting the stages of the company's process diagnosis, aimed at highlighting problems and analyzing their causes, proposing improvements in the production process to increase company productivity. Mapping a process focusing on improving activities and their flow is a crucial part of staying relevant in the metalworking sector. The proposed method for the study included the following stages: identification of process actors, training for actors, mapping of the production process, process analysis, prioritization of problems, and proposal of improvements. Through the analysis of the mapped process, it was found that, through the 11 actions developed in the improvement proposal, the company would be able to eliminate process waste, achieving better utilization of its production capacity. With the problems presented by the company, it is concluded that, among the developed actions, those focused on the company's information management would have greater relevance in process improvement.

Use of discrete event simulation and lean production in medical care analysis of a colonoscopy center

Guilherme Miranda Bócoli — 2024-06-26

High-quality medical care has become imperative amid the COVID-19 pandemic. Advances in the development of computer simulation models to resolve issues in inefficient hospital services, especially with regard to the appropriate use of resources and reduction of waiting times, have an essential purpose. In this context, the objective of this research is to apply Discrete Event Simulation in a coloproctology care center, combined with the premises of Lean Production to highlight the “non-value-adding activities” of the procedural flow. The methodology used was modeling and simulation using real data. The object of study is a colonoscopy center located at the Hospital das Clínicas Samuel Libânio in Pouso Alegre, Minas Gerais, which provides services in the morning. As a result, an average value-adding percentage value of 28.24% in providing care was evidenced, which indicates inefficient operation due to the unsatisfactory use of medical and nursing professionals in patient care.