Steam generator sludge removal apparatus

Details Steam generator sludge removal apparatus Steam generator sludge removal apparatus

1987-02-19

1988-07-19

Warner, Steven E.

Liquid heaters and vaporizers

Cleaning

Blow off

122390, 122405, 134167R, 134181, 165 95, 376310, F28G 116

Patent

active

047577851

ABSTRACT:
A lance assembly designed to clean sludge from the portion of the OTSG tube bundle which is inaccessible from the open tube lane. A track assembled between the OTSG outer shell and circular shroud around the tube bundle substantially opposite the open tube lane has a motorized carriage driven on the track which directs high pressure fluid through a plurality of nozzles toward the tube bundle through windows in the circular shroud. The nozzles are attached to a nozzle block which is capable of being moved vertically on the carriage to vary the flow impact area on the tube bundle.

REFERENCES:
patent: 2604358 (1952-07-01), Richards
patent: 3344459 (1967-10-01), Jankowski
patent: 4079701 (1978-03-01), Hickman et al.
patent: 4424769 (1984-01-01), Charamathieu et al.
patent: 4436694 (1984-03-01), Vassalotti et al.
patent: 4515747 (1985-05-01), Creek et al.
patent: 4569230 (1986-02-01), Asly et al.

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