Removal of suspended sludge from nuclear steam generator

Details Removal of suspended sludge from nuclear steam generator Removal of suspended sludge from nuclear steam generator

1984-12-24

1987-05-12

Favors, Edward G.

Liquid heaters and vaporizers

Cleaning

Blow off

122 32, 122 34, 122382, F22B 3754, F28F 1500, F28G 900

Patent

active

046640690

ABSTRACT:
A shell and tube heat exchanger (2) having a vertical dam (50) surrounding one of the steam-water separators (26a), so as to create a low flow velocity or quiescent area where solids will settle out. The dam encircles an area seven times greater than the average area per-separator throughout the rest of separating deck, so that there is a low flow velocity. Also, an orifice (52) is positioned in the inlet to the dammed in separator, to further reduce the flow velocity. The settled out solids are removed from the steam generator through a blowdown pipe (60).

REFERENCES:
patent: 3227142 (1966-01-01), Bell et al.
patent: 3906905 (1975-09-01), Andrieu et al.
patent: 4303043 (1981-12-01), Redding

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