Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1985-10-29
1987-06-09
Levy, Stewart J.
Communications: electrical
Condition responsive indicating system
Specific condition
73492, G01M 340, G08B 2100
Patent
active
046723668
ABSTRACT:
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.
REFERENCES:
patent: 3564526 (1971-02-01), Butts
patent: 3995472 (1976-12-01), Murray
patent: 4161957 (1979-07-01), Schoellkopf
patent: 4288653 (1981-09-01), Blom et al.
patent: 4305068 (1981-12-01), Klein
patent: 4568925 (1986-02-01), Butts
Levy Stewart J.
Roskos Joseph W.
Total Containment International, Inc.
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