Liquid leakage assessment from gas leakage tests

• Autor(a) principal: Costa, V.A.F.
• Data de Publicação: 2020
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10773/37380
• topic: Pressure difference driven leakage; Liquid leakage assessment; Gas leakage; Pressure decay testing; Liquid and gas leakages relationship

Liquid leakage assessment is usually difficult, what can be overwhelmed through leakage testing using gases. This happens in many situations of practical interest of pressure-difference driven liquid leakage. Starting from physical principles and laws, analytical expressions relate the liquid and gas leakages occurring through the same leak geometry. Pressure differences driven the liquid and gas leakages can be different. Process of obtaining the analytical expressions highlights the physics behind the process of leakage testing and the involved variables and principles. Obtained analytical expressions relate the governing variables, allowing calculations for results treatment, interpretation, correlation or uncertainty analysis. Developments and results presented in the paper fulfill a gap of the literature concerning the liquid leakage assessment and testing using gases, and of the users’ manuals of the leakage testing equipment. This additional knowledge and information allows equipment use and leak tests conduction with greater confidence, and supported results analyses, criticism and treatment.