| 摘要 |
A hole plug and method of installing the hole plug to seal and repair a hole in a wall of a pipeline, tank or other physical structure is provided. The hole plug has a bolt with a bolt head and a threaded shank, where two or more adjacent notched washers, one or more sealing washers and an exterior washer are secured about the threaded shank and between the bolt head and a threaded nut. The present invention includes an internal sealing washer and/or an external sealing washer. The sealing washers and the exterior washer are selected to provide a surface area larger than the hole. The hole is prepared by establishing a solid, clean edge. The bolt head, a length of the threaded shank, the notched washers and an optional internal sealing washer, are passed from the exterior side of the wall and through the hole. Insertion of the notched washers is accomplished by tipping the washers at an angle to the wall and rotating the washer through the hole. This method of insertion allows a larger size washer to pass through the hole. The notched washers are then rotated separately about the threaded shank to match alignment holes of the notched washers to one or more alignment teeth of the bolt head, and to establish a combined pressure surface larger than the hole. The nut is next tightened along the threaded shank and towards the hole and the bolt head to force the exterior washer against the exterior side of the wall, to force the optional external sealing washer against the exterior of the wall and to force the notched washers and the optional internal sealing washer against the interior side of the wall.
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