Temporary obturation panel of a passage inside a vessel accessib

Details Temporary obturation panel of a passage inside a vessel accessib Temporary obturation panel of a passage inside a vessel accessib

1984-11-01

1986-07-15

Hall, George T.

Receptacles

Closures

Having means for securing or retaining closure in its closed...

B65D 4500

Patent

active

046001158

ABSTRACT:
The invention relates to a temporary sealing obturation panel, inside a vessel accessible only through a manhole, of a passage provided on its periphery with a support collar. It is constituted by: panels articulated by flexible fluid-tight hinges, bordered by lines of latching pins, stiffeners comprising lines of holes conjugate with the lines of pins, a frame in at least two articulated parts, with means for gripping the ends of the panels and the stiffeners against the support collar. The invention is applicable to the closing of primary circuit ducts opening into the water box of a steam generator of a pressurized water nuclear boiler.

REFERENCES:
patent: 3926722 (1975-12-01), Dupen
patent: 3963565 (1976-06-01), Beine

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