Floating roof tanks for liquids, in particular to storage tanks

Details Floating roof tanks for liquids, in particular to storage tanks Floating roof tanks for liquids, in particular to storage tanks

1985-09-26

1988-02-09

Kyle, Deborah L.

Receptacles

Closures

Floating closure

376205, 376293, 376463, 220219, B65D 8838, B65D 8842

Patent

active

047236825

ABSTRACT:
The invention relates to floating roof tanks for liquids, of the type comprising a cylindrical wall (2), a floating roof (3), and a flexible membrane (4) connecting the periphery of the floating roof to the wall. In accordance with the invention, the tank further includes an overflow duct for providing protection against over-filling when the roof (3) is in its top position. The overflow duct (26) is mounted on the outside of the tank and has an upsidedown U-shaped portion disposed at a height corresponding to a maximum predetermined level for liquid inside the tank when the roof is in its top position. The invention is applicable to the nuclear power industry for storage tanks for topping up the primary circuit of a nuclear reactor with de-gassed water.

REFERENCES:
patent: 2538412 (1951-01-01), Cecil et al.
patent: 2712395 (1955-07-01), Wiggins
patent: 2718977 (1955-09-01), Wiggins
patent: 4199074 (1980-04-01), Gammell et al.
patent: 4438863 (1984-03-01), Wilson et al.
patent: 4495137 (1985-01-01), Otsubo
patent: 4620566 (1986-11-01), Gery et al.

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