Abstract: Discloses a backup lube oil pump system for a steam turbine lube oil system. The primary and secondary pump system of the prior art lube oil system normally includes a primary centrifugal pump affixed to the turbine shaft and ac and dc motor-driven pumps to supply lubrication during start-up and shutdown when the primary pump cannot maintain flow due to low rotational speed. If the turbine is coasting down due to an ac power failure, the ac motor-driven backup pump is inoperative. The dc (battery) driven backup pump becomes the only backup left and the failure of batteries if not charged regularly can render it as a poor backup system. In the invention a backup lube oil system having high reliability utilizes a positive displacement lube oil pump driven by a rotor-driven permanent magnet generator. The pump is in parallel with a primary check valve in the lube oil feed line, so that the positive displacement backup lube oil pump is supplying oil at all times to the shaft bearing.

Abstract: A manway handling apparatus for handling heavy sealing manways in large shells without damaging sealing surface means therefor is provided which includes a support arm pivotally mountable on equipment having elliptical manway access openings. The support arm when mounted is swingable toward and away from an access opening and carries a bearing block supporting bracket which is longitudinal adjustably positionable on the arm. A bearing block is vertically adjustably positionable in the bracket and slidably supports a shaft which is attachable to an elliptical cover. Structure is provided for longitudinally actuating and rotating the shaft to position and rotate the cover to facilitate installation and removal of the cover through the elliptical opening. The shaft carries structure means which when actuated by turning of a crank handle is effective for tilting the cover also to facilitate its installation and removal.