초록 ▼

An improved system for containment and detection of leakage of petroleum products from a subterranean storage tank is disclosed wherein the tank is provided with leak sensing means positioned at one end of the tank and the tank, together with the leak sensor, is enclosed in an impervious enclosure w

An improved system for containment and detection of leakage of petroleum products from a subterranean storage tank is disclosed wherein the tank is provided with leak sensing means positioned at one end of the tank and the tank, together with the leak sensor, is enclosed in an impervious enclosure which is sealed about the tank to prevent actuation of the leak sensor except due to leakage from the tank. In one form the leak sensor may be housed in a perforated duct which extends through and is sealed within the enclosure permitting access to the leak sensor and the interior of the enclosure in the event that a leak is detected. A preferred material for use in making the enclosure is welded linear high density polyethylene (HDPE). In a second preferred form, a drainage mesh is positioned between the tank and the enclosure to ensure that any leakage from the tank drains to the leak sensor, and an absorbent strip is positioned beneath the tank and inside the enclosure to conduct leakage to the sensor.

대표청구항 ▼

In a method of detecting and containing leakage from a subterranean container such as a tank containing a liquid petroleum product such as gasoline or heating oil, the improvement comprising: positioning leak sensing means adjacent said container, said leak sensing means including at least two elect

In a method of detecting and containing leakage from a subterranean container such as a tank containing a liquid petroleum product such as gasoline or heating oil, the improvement comprising: positioning leak sensing means adjacent said container, said leak sensing means including at least two electrical conductors separated by insulation which is subject to degradation by said liquid petroleum product, enclosing said leak sensing means and said container together in an enclosure of linear HDPE impervious to said product, sealing said enclosure to contain leakage from within said container and to prevent the ingress of petroleum products due to accidental spillage or from other sources of petroleum product burying said enclosure containing said container and said leak sensing means, connecting said leak sensing means to means for remotely detecting changes in the electrical characteristics of said leak sensing means due to degradation of said insulation, and detecting said degradation due to leakage from said container into said enclosure.