Influência da variação temporal da densidade da água nas operações portuárias do Terminal Marítimo de Ponta da Madeira

Abstract

Due to the large movement of cargo, ports have been forced to constantly invest in studies of operational improvement and process control so that they can respond to the high competitiveness of the international market, as well as guarantee the safety of their operations. Among the investments is the control of variations in the loading capacity of large ships with a full load, due to environmental changes. In this way, the objective of this research is to analyze the impacts that the variation of the water density of a port can cause in its operations and the possible ways to monitor this variable more effectively. To carry out this study, we have the collaboration of VALE S/A, for the supply of records of the density values used in the tonnage of ships during the period from November/2020 to August/2021. Through the analysis of the reports of each tonnage carried out within the mentioned period, it is possible to obtain information on the value of the density of water in the estuary. The data were treated and processed using the Power B.I and Matlab programs. In the observed results, it was possible to estimate the possible financial impact of the TMPM due to the variability of precision of measurements by analog densimeter when compared with the values via digital densimeter - SISMO®ValePDM. Thus, it can be concluded that, adopting density measurement through salinity, temperature and conductivity data as a reference for ship tonnage calculations, would result in greater accuracy of the declaration of cargo shipped by ship and for the year studied, the difference in values could result in an increase in port productivity of approximately 1,100,000.00 tons of iron ore.