Steam generator lateral support

Details Steam generator lateral support Steam generator lateral support

1995-03-07

1997-07-29

Bennett, Henry A.

Liquid heaters and vaporizers

Supports

376285, F22B 3720

Patent

active

056513348

ABSTRACT:
A steam generator originally having hydraulic snubbers damping lateral thermal movement of the steam generator is backfit to laterally support the steam generator without hydraulic damping. Hydraulic fluid is emptied from piston cylinders of all snubbers extending from a steam generator; and then stops are placed around piston rods extending into the piston cylinders of empty snubbers extending from the back side of the steam generator to stop the thermal growth of the steam generator in the operation of the nuclear reactor vessel to generate power. Thus, the costs associated with maintaining, inspecting and testing hydraulic snubbers are entirely eliminated. Also, the backside empty snubbers are used as bumpers and do not incur disposal costs.

REFERENCES:
patent: 3771499 (1973-11-01), Marroni, Jr. et al.
patent: 4583584 (1986-04-01), Wepfer
patent: 4688628 (1987-08-01), Moldenhauer
patent: 4940025 (1990-07-01), Ott et al.
"Plant-Wide Application Snubber Reduction At a Boiling Water Reactor", C. S. Haynes and T. E. Bostrom, American Society of Mechanical Engineers, Pressure Vessel and Piping Division, V. 127, pp. 119-124, Jun./Jul. 1987.

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