Atau mengutip kalimat dari buku “Piping Handbook”, sixth edition (Mohinder L. Nayyar), chapter B4 – Stress Analysis of Piping Systems by C. Basavaraju & William Saifung Sun, yang mengatakan bahwa to assure the integrity and leak tightness of a piping system is required pressure test be performed prior to placing the piping system in service. Sedangkan mengutip dari ASME B31.8 – Gas Transmission and Distribution Piping Systems, 2010 edtion, bahwa pressure test is to validate integrity of piping system (pipes and equipments) and detect construction defects and defective materials.