Method of remotely installing or removing a nozzle dam

Details Method of remotely installing or removing a nozzle dam Method of remotely installing or removing a nozzle dam

1992-01-30

1992-12-08

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

G21C 1900

Patent

active

051695944

ABSTRACT:
A method of remotely installing or removing and assembling and disassembling nozzle dams (10) from outside a steam generator manway (14) using a tool set. The tools are a bifurcated segment lifting (torquing and push-pull) tool 60 to unweight and faciltate the operation of sliding dam segments (30,32) edgewise along sliding brackets (40) and bars (44) in an assembly and disassembly operation; a cam-lock component (36) operating T-shaped tool (80) with a nozzle dam rib avoiding offset (88), transverse quick-connect body (50b) straddling tool (90) pull a sleeve (50c) in order to disassembly quick-connects; and, a gasket installing, tensioning and removing hook tool (102).

REFERENCES:
patent: 4482076 (1984-11-01), Wentzell
patent: 4483457 (1984-11-01), Schukei et al.
patent: 4744392 (1988-05-01), Tade, III et al.
patent: 4770235 (1988-09-01), Rogers, Jr. et al.
patent: 5006302 (1991-04-01), Trundle et al.
patent: 5032350 (1991-07-01), McDonald et al.
Zezza, Nuclear Plant Safety, May-Jun. 1986, pp. 36-38.

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