Patent attributes
A method of handling the removal and installation of a manway cover to a manway flange includes removing a plurality of cover bolts from a portion of the cover, providing a flange hinge plate of a portable cover hinge device with an aperture therethrough, inserting the first end of a fastening pin through the aperture and into an aligned bolt opening of the flange, where the pin first end has a bore transverse to the longitudinal axis of the pin, inserting a transverse rod into the bore of the pin, securing the flange hinge plate to the flange, inserting a first end of another fastening pin through the cover hinge plate aperture and into an aligned bolt opening in the cover and securing the cover hinge plate to the cover, pivotally connecting the flange hinge plate to the cover hinge plate, and removing any remaining cover bolts.
