Methods and Apparatus for Detection of Leaks in Underground Storage Tanks

摘要

A system for the non-volumetric detection of low-threshold leaks with high resolution in underground storage tanks (USTs). A UST may be located underground with a restricted tank entry opening. The interior space of a UST may be accessed with a remotely controlled device. The presence of a liquid fill material or indicia thereof evidencing a leak may be visually observed. Variables affecting volumetric measurements of leak detection, such as temperature, pressure, tank deflection, and groundwater, may be eliminated or controlled. Visual observation may enable high resolution detection of low-threshold leaks.