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 . <EOS>