EP 0334876 A4 19920108 - VOLUMETRIC LEAK DETECTION SYSTEM FOR UNDERGROUND STORAGE TANKS AND THE LIKE
Title (en)
VOLUMETRIC LEAK DETECTION SYSTEM FOR UNDERGROUND STORAGE TANKS AND THE LIKE
Publication
Application
Priority
US 93347286 A 19861120
Abstract (en)
[origin: WO8804031A1] Method and apparatus for detecting leaks in underground tanks (30) containing a liquid (31). The pressure and temperature of the liquid are measured over a predetermined time interval, while simultaneously measuring the liquid level in the tank and the temperature of the liquid (31) therein. From each measuring step the leak rate of the liquid (31) from the tank (30) is calculated and the two calculated leak rates are compared with each other. The temperature at a series of different depths in the tank is measured. Other measurements are made and fed to a suitable computer (27) which computes the leakage rate.
IPC 1-7
G01F 23/00; G01F 23/14; G01F 23/22; G01F 23/30; G01F 23/56; G01F 1/34
IPC 8 full level
G01F 23/00 (2006.01); G01F 23/14 (2006.01); G01F 23/18 (2006.01); G01F 23/60 (2006.01); G01M 3/32 (2006.01)
CPC (source: EP)
G01F 23/18 (2013.01); G01F 23/60 (2013.01); G01F 23/804 (2022.01); G01M 3/3245 (2013.01)
Citation (search report)
- EP 0048589 A1 19820331 - FUEL PUMPS LTD [GB]
- US 4386525 A 19830607 - MOONEY JOSEPH R [US]
- US 4602344 A 19860722 - FERRETTI MICHAEL D [US], et al
- US 3580055 A 19710525 - WHITE RICHARD B
- WO 8606029 A1 19861023 - EASTMAN KODAK CO [US]
- US 3538745 A 19701110 - WRIGHT LAWRENCE T, et al
- US 4373815 A 19830215 - BRUCE CHARLES R
- US 4610165 A 19860909 - DUFFY DENNIS M [US], et al
- [A] PATENT ABSTRACTS OF JAPAN, vol. 8, no. 45 (P-257)[1482], 28th February 1984; & JP-A-58 196 423 (TAIYOU SANSO K.K.) 15-11-1983
- See references of WO 8804031A1
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8804031 A1 19880602; AU 8336787 A 19880616; EP 0334876 A1 19891004; EP 0334876 A4 19920108; JP H03503674 A 19910815
DOCDB simple family (application)
US 8703004 W 19871118; AU 8336787 A 19871118; EP 87908067 A 19871118; JP 50030888 A 19871118