Patent ID: 6425283
Filing Date: 2002-07-30
Classification: G01M,Y10T

Abstract:
A device for long-term leakage monitoring, in particular for flat tank structures comprising a sensor cable (3) arranged on the outer surface of the tank casing (2), a collection chamber (4) which, with respect to its height, is arranged at least partially below the bottom (12) of the flat tank structure (1), surrounding its circumference preferably in an annular manner, and which via an inclined cantilever (5) is connected with the lower end of the outer surface of the tank casing (2), with the sensor cable (3) being arranged on the cantilever (5) or in the bottom area of the collection chamber (4),whereina fire signaling sensor (17) is located above the collection chamber (4) which, in the case of a fire, in cooperation with an extinguishing supply (18), enables the activation of the automatic foaming of the collection chamber (4), and the collection chamber (4) is a pipe or a pipe segment (7) which surrounds the flat tank structure (1) in an annular manner, comprising inlet slots or inlet holes (8) facing towards the cantilever (5), with a circumferential collar plate (19) being arranged on the pipe (7) for the formation of an open extinguishing agent retention chamber (20) surrounding only a bottom portion of the tank casing (2), wherein a circumferential extinguishing foam line (18) comprising extinguishing agent outlet openings (21) is arranged above the collar plate (19).