Per: antonio augusto genelhu machado (usiminas), fernando tomas dos santos (usiminas), falmarion barros andrade (usiminas)
Abstract:
The technological upgrade of 130 t/h nº 2 boiler, at Usiminas, took place in 2020, with main objective of updating the thermal exchange equipments and protection/control systems. This boiler, model VU 50 B, was built in the 70s, and it is one of 3 boilers that set Usiminas' Thermoelectric Plant 1, responsible for supplying steam for turbomachinerys, which blows air to Blast Furnace 3, and generates safety electricity for prior loads at Usiminas. This technological boiler upgrade leaves a significant improvement in operation and safety conditions, following standards such as NFPA 85, NBR 12313 and ASME VII. This constant search technological upgrade, with an emphasis on employee and process safety, demonstrates that Usiminas is aligned with the ESG (Environmental Social and Governance) concepts