Patent ID: 11892374
Assignee: GAZTRANSPORT ET TECHNIGAZ
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. A checking method performed using a tightness checking device (4) as claimed in claim 1 on a sealing component (1) of a fluid storage tank, wherein the method comprises the following steps:
applying water containing surface active agents or injecting a colored gas, respectively on or under a portion to be tested (2) of the sealing component (1),
placing the tightness checking device (4) on the portion to be tested (2) so that the outer peripheral seal (12) and the inner peripheral seal (11) are in contact with the portion to be tested (2),
depressurizing the inner chamber (13) and the intermediate chamber (14) by means of the depressurizing device (17),
observing, through the transparent cover (6), the appearance respectively of bubbles on the portion to be tested (2) or of colored gas in the inner chamber (13).