Title:
METHOD FOR INSPECTING AN INTERNAL FLOATING ROOF IN A LIQUID-CONTAINING STORAGE TANK
Document Type and Number:
WIPO Patent Application WO2004018327
Kind Code:
A3
Abstract:
Methods for remotely inspecting an internal floating roof and the seals associated with such internal floating roof project an illumination pattern from a series of substantially parallel laser beams onto the floating roof and/or the seal. Another laser beam projects at a predetermined angle offset from the series of laser beams. The illumination pattern and offset spot from the other laser are viewed through a camera. The length of a defect in the internal floating roof or seal or a gap between the seal and the tank wall is calculated as the length of a side of a right triangle based upon the predetermined angle and the predetermined distance between the lasers and the floating roof or seal.
Inventors:
SILVERMAN EUGENE BEN (US)
KOTLER SEYMOUR R (US)
CRUMPTON ERIC C (US)
KOTLER SEYMOUR R (US)
CRUMPTON ERIC C (US)
Application Number:
PCT/US2003/025226
Publication Date:
November 04, 2004
Filing Date:
August 13, 2003
Export Citation:
Assignee:
INTANK INC (US)
SILVERMAN EUGENE BEN (US)
KOTLER SEYMOUR R (US)
CRUMPTON ERIC C (US)
SILVERMAN EUGENE BEN (US)
KOTLER SEYMOUR R (US)
CRUMPTON ERIC C (US)
International Classes:
G01N21/954; (IPC1-7): B65D88/00; G01S5/16; B65D88/34
Foreign References:
| EP1156304A1 | 2001-11-21 | |||
| US5205174A | 1993-04-27 | |||
| US5627800A | 1997-05-06 |
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