Volumetric leak detection system for underground storage tanks and the like

Patent · Tue Jul 25 04:00:00 EDT 1989

OSTI ID:5333828

Mastandrea, J R

This patent describes an apparatus for detecting and measuring leaks from underground tanks having a fill pipe at an upper end thereof and having other pipes connected thereto, and containing a liquid that extends up into the fill pipe. It comprises: a test pipe, a test instrumentation assembly of elements contained in the test pipe, a multiconductor electronic cable assembly with cables connected to the elements of the test instrumentation assembly, a computer-controlled data acquisition unit connected to the cable assembly, a digital computer connected to an controlling the data acquisition unit and having timing means, a memory, and an output, an integral plotter and a printer connected to the output, hydrometer means for measuring the specific gravity of the tank liquid and for passing the measured value to the data acquisition unit, and inclinometer means for measuring the inclination angle of the tank fill pipe and for passing the value of that angle to the data acquisition unit.

• Assignee: NDE Technology, Inc., Torrance, CA
• Patent Number(s): US 4852054
• Application Number: PPN: US 7122284A
• OSTI ID: 5333828
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
022000* -- Petroleum-- Transport
Handling
& Storage
42 ENGINEERING
420205 -- Engineering-- Transport & Storage Facilities-- (1980-)
440800 -- Miscellaneous Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
COMPUTERS
CONTAINERS
DESIGN
ENERGY SOURCES
FOSSIL FUELS
FUELS
LEAK DETECTORS
LEAK TESTING
PETROLEUM
STORAGE
TANKS
TESTING
UNDERGROUND FACILITIES
UNDERGROUND STORAGE