Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1983-07-18
1986-02-04
Birmiel, Howard A.
Communications: electrical
Condition responsive indicating system
Specific condition
73 492, G01M 340, G08B 2100
Patent
active
045689253
ABSTRACT:
An improved system for containment and detection of leakage of petroleum products from subterranean tanks or lines is disclosed wherein the tanks or lines are provided with a leak sensing means positioned adjacent the tank, and the tank or line together with the leak sensor is enclosed in an impervious enclosure which is sealed about the tank or line to prevent actuation of the leak sensor except due to leakage from the tank. In a preferred form the leak sensor is 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 bag in the event that a leak is detected. A preferred material for use in making the enclosure is welded high density polyethylene (HDPE).
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
Birmiel Howard A.
Roskos Joseph W.
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