Proposta de uma metodologia para mensuração do índice de sustentabilidade para processos de fabricação

Abstract

As new technologies change the production scenario, sustainable production practices are presented as one of the solutions to harmonize the activities of industry with the conservation of biodiversity, for the benefit of humanity. Thus, in this proposal, a new and unprecedented sustainability index model is presented, based on the Triple Bottom Line and Circular Economy concepts, which contribute toward filling in some of the gaps found in the evaluation models of sustainability indexes presented in the literature. Among such opportunities for improved sustainability one finds (i) individual evaluation of each stage of the production process, identifying improvements and measuring the level of sustainability of this stage of production, since most of the models approach sustainability in a corporate way, (ii) an evaluation model that is independent of the type of process, since many models are restricted to the restricted applications of a specific segment, (iii) implementation a flexible and fast application evaluation model with the possibility of computerization within corporate network systems, (iv) evaluation as an objective to promote improvements. In order to verify the applicability of this model, we selected two companies that apply metal coating (cutting knives) to sugarcane mill rolls, by the shielded metal arc welding (SMAW) and Flux Core Arc Welding (FCAW) processes. In terms of the results, these showed the prospect of measuring the level of sustainability of each indicator (KPI), the pillars and the general index of sustainability. As for the results obtained in the application on the factory floor, the model proposed here evaluated the FCAW process as the best sustainability index.