Means for detecting leakage in the inner lining of tanks and pip

Details Means for detecting leakage in the inner lining of tanks and pip Means for detecting leakage in the inner lining of tanks and pip

1976-08-02

1978-08-29

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

73 492, 174120SC, 174126CP, G08B 2100

Patent

active

041107390

ABSTRACT:
A laminated vessel or pipe having an outer wall of fibreglass reinforced polyester, an inner wall of corrosion resistant thermoplastic and an electrical conductive layer between the inner and outer walls. A probe of inert material is inserted into the tank or pipe and is connected to a source of electrical power and with an alarm system and the electrical circuit is completed with a connection to the electrical conductive layer in the vessel or pipe.

REFERENCES:
patent: 2165738 (1939-07-01), Van Hoffen
patent: 3252155 (1966-05-01), Surtees et al.
patent: 3383863 (1968-05-01), Berry
patent: 3867565 (1975-02-01), Prentice et al.
patent: 3900296 (1975-08-01), Kuchek

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