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Title: Nuclear reactor pressure vessel support system

A support system for nuclear reactor pressure vessels which can withstand all possible combinations of stresses caused by a postulated core disrupting accident during reactor operation. The nuclear reactor pressure vessel is provided with a flange around the upper periphery thereof, and the flange includes an annular vertical extension formed integral therewith. A support ring is positioned atop of the support ledge and the flange vertical extension, and is bolted to both members. The plug riser is secured to the flange vertical extension and to the top of a radially outwardly extension of the rotatable plug. This system eliminates one joint through which fluids contained in the vessel could escape by making the fluid flow path through the joint between the flange and the support ring follow the same path through which fluid could escape through the plug risers. In this manner, the sealing means to prohibit the escape of contained fluids through the plug risers can also prohibit the escape of contained fluid through the securing joint.
Authors:
 [1]
  1. (McMurray, PA)
Publication Date:
OSTI Identifier:
863185
Report Number(s):
US 4115193
DOE Contract Number:
E(11-1)-2395
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
nuclear; reactor; pressure; vessel; support; support; nuclear; reactor; pressure; vessels; withstand; combinations; stresses; caused; postulated; core; disrupting; accident; reactor; operation; nuclear; reactor; pressure; vessel; provided; flange; upper; periphery; flange; annular; vertical; extension; formed; integral; therewith; support; positioned; atop; support; ledge; flange; vertical; extension; bolted; plug; riser; secured; flange; vertical; extension; top; radially; outwardly; extension; rotatable; plug; eliminates; joint; fluids; contained; vessel; escape; fluid; flow; path; joint; flange; support; follow; path; fluid; escape; plug; risers; manner; sealing; means; prohibit; escape; contained; fluids; plug; risers; prohibit; escape; contained; fluid; securing; joint; sealing means; reactor pressure; reactor pressure; reactor pressure; pressure vessel; pressure vessel; pressure vessel; nuclear reactor; nuclear reactor; nuclear reactor; fluid flow; flow path; radially outwardly; radially outward; pressure vessels; reactor operation; rotatable plug; positioned atop; vessel support; integral therewith /376/976/