초록 ▼

A method of leak testing a walled tank (16) that has multiple joints containing closures or closure devices (18, 20, 22, 24) closing openings in the wall. Rims (38) of multiple cups (26, 28, 30, 32) are disposed against the tank wall to place the cup interiors in substantial sealed covering relation

A method of leak testing a walled tank (16) that has multiple joints containing closures or closure devices (18, 20, 22, 24) closing openings in the wall. Rims (38) of multiple cups (26, 28, 30, 32) are disposed against the tank wall to place the cup interiors in substantial sealed covering relation to underlying zones of the tank wall containing joints to be checked. A tank seal (52) is disposed fluid-tight against a fill spud (18) in the tank wall, and a test gas, helium, is introduced into the interior of the tank. Gas from within the interior of each cup is sampled via a respective sampling conduit (48), and a purge gas is introduced into the interior of each cup via a respective purge conduit (46) while the gas from the interior of each cup is being sampled via the respective sampling conduit.

대표청구항 ▼

[ What is claimed is:] [1.]1. Test equipment for leak testing tanks comprising:multiple cups having rims for placement against a tank wall to place the cup interiors in substantial sealed covering relation to underlying zones of the tank wall containing joints to be checked for leakage;a fitting for

[ What is claimed is:] [1.]1. Test equipment for leak testing tanks comprising:multiple cups having rims for placement against a tank wall to place the cup interiors in substantial sealed covering relation to underlying zones of the tank wall containing joints to be checked for leakage;a fitting for fluid-tight association with an opening through the tank wall to introduce a test gas into the interior of the tank;a first conduit from each cup for sampling gas within the cup interior; anda second conduit from each cup for communicating the cup interior to a pneumatic circuit,in which one of the cups and the fitting form a unit for association with a fill spud that is joined to the tank, the cup of the one cup serving to leak test the joint between the fill spud and the tank, and the fitting extending through the cup for fitting fluid-tight to the spud for introducing test gas into the tank through the fill spud.