Proposta para melhoria da metodologia de produção mais limpa utilizada pelo CNTL por meio da inserção de ferramentas de qualidade e estatística

Abstract

The relationship between businesses and the environment has become more important nowadays, whether for the survival of the enterprises – by response to regulators and inspection bodies – whether for its distinction over the competition - through innovation. Either way, the methodology of Cleaner Production is a powerful strategy to achieve the desired level of environmental performance. Through the Cleaner Production program, the United Nations set up National Cleaner Production Centers in several countries. In Brazil, the CNPL is called National Center for Clean Technologies and is located at Senai-RS. Despite the potential that CP methodology presents, its wide acceptance by companies faces some obstacles, one of them being the weak systematization of procedures that comprise its stages. Thus, this study aimed to develop a proposal for improvement of Cleaner Production methodology used by the National Center for Clean Technology, through the insertion of quality and statistical tools. In order to conduct this study, the stages of CP methodology was analyzed through the search of its improvement points, quality and statistical tools were evaluated and selected for usage, and the CP methodology equipped with the selected quality and statistical tools was proposed. The CP methodology of NCCT consists of 20 steps in five phases: planning and organization; pre-assessment and diagnosis; CP evaluation; studies of technical, economic and environmental feasibility; and implementation options and continuity plan. The following tools have been studied and evaluated for possible use in the CP methodology: trend graph, 5W2H, flowchart, GUT matrix, Gage R&R, Ishikawa diagram, brainstorming, check sheet, Pareto analysis, histogram, box-plot, scatter plots, Pearson correlation coefficient, regression, DOE, hypothesis testing, FMEA, decision matrix, SPC and poka-yoke. This work has achieved its goal through the insertion of 19 quality and statistical tools in nine steps of CP methodology of CNTL. The tools were inserted primarily in steps of data collecting and analyzing, and validation of results, making it go from a less managerial approach to a more technical one. Through this work it has been possible to systematize more some of CP methodology steps, possibly leading to a more fast and effective execution, as well as maximizing the benefits of its implementation.