Abstract: A method for refitting blade shrouds of a rotor wheel in an aircraft turbomachine is described. The rotor wheel has a disc bearing blades that each have an airfoil extending between a root and a shroud, the shroud of each blade having lateral edges including shapes complementary to the lateral edges of the shrouds of the adjacent blades. The lateral edges of the shrouds are interlocked in engagement with one another such that anti-wear coatings of these edges are in contact with one another in a desired interlocking engagement position, and at least one of the lateral edges of at least one of the shrouds being able to be disengaged from the lateral edge of an adjacent shroud in an undesired disengagement position. The method includes, when an undesired disengagement position is detected, a step of inserting a re-engagement device into the turbomachine.

Abstract: This method is for controlling a turbine for a hydraulic power plant comprising at least one reservoir, the turbine comprising a hub having several blades. The method includes running the turbine in at least two different operating modes including a direct power-generating mode and an indirect power-generating mode, when a flow of water fills the reservoir or when the reservoir is emptied.