Abstract: A method for washing rod elements used in reactor pressure vessels with a fluid that includes the steps of (a) moving the rod elements from a pressure vessel through an open centered frame; (b) during the performance of step (a), impinging at least one fluid under pressure on the rod elements from at least one outflow orifice on the frame; and (c) simultaneously with the performance of step (b), withdrawing the fluid impinged upon the rod elements during step (b) under suction at at least one suction extraction orifice on the frame at a location peripherally spaced from the outflow orifices.

Abstract: The device and process for suction in a fluid medium are based on a special arrangement of a driver pump (2) and a jet pump (1) which preferably provide excellent suction with compact dimensions. The driver pump (2) supplies the fluid medium under pressure to the jet pump (1). The desired suction is obtained via an suction slot (3) in the jet pump (1). The driver pump (2) conveys the fluid medium required to operate the jet pump (1) via an inlet (9) which does not feed the suction slot (3).