Análise e melhoria do procedimento de teste hidrostático em vasos de pressão: estudo de caso em um trocador de calor - Sasol Gás

Abstract

This study focuses on the critical analysis and enhancement of hydrostatic testing procedures applied to heat exchangers at the Chókwè thermal substation, operated by Electricidade de Moçambique. The initial phase involved diagnosing flaws in the testing process, notably the inadequate use of a single pressure gauge positioned at the lowest point of the pressure vessel and the absence of vent valves for effective air removal. Based on these findings, a revision of the testing method was proposed, including the repositioning of pressure gauges and the strategic installation of vent valves to improve measurement accuracy. The study incorporated detailed simulations to validate the proposed adjustments, confirming that these changes significantly reduced measurement errors and improved compliance with international standards. The conclusions highlight the importance of rigorous procedures tailored to the specific characteristics of the tested systems, with practical recommendations for future applications in the industry. This research contributes to the advancement of quality control and safety practices in the evaluation of pressurized equipment.