The Babcock & Wilcox Company

B&w Nuclear Service Company

Ronald C Pillow

Henry H Gooch, Iv

Robert C Smith

Timothy A Brandsberg

This invention pertains to a method and apparatus for venting pressure from within a pressurized housing. It incorporates a sealing assembly that is secured within a housing and restrained against a pressurized channel by a nut. By loosening the nut, restraint on the sealing assembly is released thereby allowing fluid from the channel to travel the length of the sealing assembly and exit the housing. Conversely, by tightening the nut, restraint on the sealing assembly is reapplied which blocks the channel once again thereby preventing any more fluid from flowing.

Quick vent closure assembly for pressurized water reactor

A stud/bolt load gauge assembly. A gauge screw threadably engaged in a stud or bolt has a top, belleville, overload, and bottom washer mounted between the head of the bolt and the head of the gauge screw. All of the washers are movable until axial stress on the bolt equal to the minimum desired load causes the underload gap to be taken up by the gauge screw. Then only the overload washer is movable. The overload washer becomes immovable between the top and bottom washers when the bolt load is increased beyond the desired maximum load, causing compression of the belleville spring washer to a substantially flat state.

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Lynchburg, VA, United States of America

Ronald C Pillow