Nuclear steam generator wrapper and shell assembly and method for assembling

Patent · Tue May 12 04:00:00 EDT 1981

OSTI ID:5907520

Burack, R D

A nuclear steam generator modularized wrapper assembly comprising at least two separate generally cylindrical wrapper modules with tube support plates therewithin are assembled in stacked relation and joined within the nuclear containment building, the assembled modules then being placed in the shell with the tube apertures in the tube support plates being aligned with the tube apertures in the tube sheet, and a plurality of adjustable spacer means fixed to the outer circumference of the wrapper assembly are provided and are adjusted to vary the width of the space in the annulus between the wrapper and shell at various locations to lock the assembly in place with axial alignment of all of the apertures in the tube support plates and tube sheets. The method of effecting the replacement of a wrapper assembly in the field within the nuclear containment building includes providing tube aperture keying means at selected locations on the upper surface of the tube sheet to promote alignment of all the tube apertures in the various parts, the keying means being removed after the adjustment of the spacer means in the annulus.

• Assignee: Westinghouse Electric Corp
• Patent Number(s): US 4267020
• OSTI ID: 5907520
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200* -- Nuclear Reactor Technology-- Components & Accessories
ALIGNMENT
APERTURES
BOILERS
CONFIGURATION
CONSTRUCTION
CONTAINMENT
CONTAINMENT BUILDINGS
CYLINDRICAL CONFIGURATION
DESIGN
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
OPENINGS
POWER PLANTS
SHELLS
STEAM GENERATORS
THERMAL POWER PLANTS
TUBES
VAPOR GENERATORS