A system comprising: a rotor; a shell surrounding at least a portion of the rotor; and a rotor support structure positioned adjacent the shell and configured to receive the rotor, the rotor support structure including: a rigid base component including a top portion; a slide plate positioned above the top portion of the rigid base component; a bearing housing for the rotor coupled to the slide plate, the bearing housing and the slide plate configured to slide over the top portion of the rigid base component; and a plurality of retention blocks coupled to the bearing housing, each of the plurality of retention blocks including: a moveable retention pin positioned through each of the plurality of retention blocks, the moveable retention pin extending radially toward a passage of the bearing housing, wherein the top portion of the rigid base component includes an aperture, and wherein the slide plate includes an opening at least partially aligned with the aperture of the top portion of the rigid base component, a governor housing coupled to the bearing housing of the rotor support structure, the governor housing including a hole positioned above and aligned with the opening formed in the slide plate of the rotor support structure, characterized in that the aligned hole, opening and aperture form a passageway through the top portion of the rigid base component, the slide plate and the governor housing providing a space for a pipeline or fluid system of a power system. a rotor; a shell surrounding at least a portion of the rotor; and a rotor support structure positioned adjacent the shell and configured to receive the rotor, the rotor support structure including: a rigid base component including a top portion; a slide plate positioned above the top portion of the rigid base component; a bearing housing for the rotor coupled to the slide plate, the bearing housing and the slide plate configured to slide over the top portion of the rigid base component; and a plurality of retention blocks coupled to the bearing housing, each of the plurality of retention blocks including: a moveable retention pin positioned through each of the plurality of retention blocks, the moveable retention pin extending radially toward a passage of the bearing housing, wherein the top portion of the rigid base component includes an aperture, and wherein the slide plate includes an opening at least partially aligned with the aperture of the top portion of the rigid base component, a rigid base component including a top portion; a slide plate positioned above the top portion of the rigid base component; a bearing housing for the rotor coupled to the slide plate, the bearing housing and the slide plate configured to slide over the top portion of the rigid base component; and a plurality of retention blocks coupled to the bearing housing, each of the plurality of retention blocks including: a moveable retention pin positioned through each of the plurality of retention blocks, the moveable retention pin extending radially toward a passage of the bearing housing, wherein the top portion of the rigid base component includes an aperture, and wherein the slide plate includes an opening at least partially aligned with the aperture of the top portion of the rigid base component, a governor housing coupled to the bearing housing of the rotor support structure, the governor housing including a hole positioned above and aligned with the opening formed in the slide plate of the rotor support structure, characterized in that the aligned hole, opening and aperture form a passageway through the top portion of the rigid base component, the slide plate and the governor housing providing a space for a pipeline or fluid system of a power system.