Nozzle dam assembly

Details Nozzle dam assembly Nozzle dam assembly

1984-12-27

1987-05-26

Artis, Henry K.

Pipes and tubular conduits

With closures and plugs

Inflatable

138 89, 220314, 376204, F16L 5512, G21C 1306

Patent

active

046677011

ABSTRACT:
In a nozzle dam assembly wherein a flange ring is affixed around a circular nozzle opening in a chamber wall, a support frame spans and is in non-threaded connection with the ring by releasable pins which carry under tension any load on the frame directed axially out of the nozzle into the chamber, and a circular dam with a sealing diaphragm disposed over it is attachable to the frame with its rim within the nozzle so that inflatable peripheral sealing means on the diaphragm effect the desired seal of the nozzle independent of the aforementioned axial load.

REFERENCES:
patent: 1893979 (1933-01-01), Barrere
patent: 3537483 (1970-11-01), Teaue, Jr.
patent: 3774646 (1973-11-01), Smith
patent: 4207706 (1980-06-01), Haines
patent: 4482076 (1984-11-01), Wentzell
patent: 4483457 (1984-11-01), Schukei et al.
patent: 4505295 (1985-03-01), Quin et al.
patent: 4518015 (1985-05-01), Fischer
patent: 4519519 (1985-05-01), Meuschke et al.
Radiological Experiences With Steam Generator Nozzle Dam Installations at Salem Nuclear Generation Station, Britz, Bergendahl & Steed, Oct. 1983, pp. 65-76.
Products and Services to Improve PWR Steam Generator Maintenance, Alden/Kosky, Apr. 1983, pp. 1-8.

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