Vermaat Technics B.v.

Brown Boveri Reaktor Gmbh

Huibrecht Pieter Vermaat

Lothar Mehr

Heiko Forch

A method for welding a plurality of pipes, including first, second and third pipes, to each other, the method comprising the steps of:

Method and device for welding pipes

Robot with suction cup attachment to steam generator partition

By providing a yoke (36) to the shoulder (15) of a robot for inspecting and repairing the tubes of a nuclear boiler, which yoke can receive an expandable anchoring piece (35) of an auxiliary tool (23) connected to the wrist (18) of the robot, said auxiliary tool (23) being provided with additional span fingers (37, 38), it is no longer a time-consuming and therefore expensive procedure to also inspect the tubes that lead to the tube sheet passages (9) into which the usual span fingers (8) of the robot were originally fixed.

Apparatus for inspecting and repairing the tubes of a nuclear power plant

Device for inspection and repair of tubes of a nuclear reactor steam generator in a tube bundle being disposed in a tube sheet and opening into at least one chamber having an opening formed therein, including a manipulator being insertible in the chamber through the opening and being lockable to the tube sheet for carrying remotely controlled and monitored inspection instruments and tools, the manipulator including a support leg being adjustable in length in the axial direction, a main arm being connected to and movable relative to the support leg, and an equipment carrier being connected to the main arm and movable relative to and together with the main arm, and a mounting rod being connectible to and detachable from the manipulator.

Device for inspection and/or repair of the tubes of a steam generator

A steam generator having a steam generator chamber, a tube plate bordering the chamber, tubes terminating in the tube plate being accessible through the steam generator chamber, a tubular column in the steam generator chamber having an end facing toward the tube plate, and a swivel arm extended from the tubular column being movable parallel to the tube plate for carrying a device for testing and/or repairing the steam generator tubes, includes a clamping element for positioning the tubular column relative to a tube of the tube plate, and a coupling being detachable from outside the steam generator chamber connecting the clamping element to the tubular column, the clamping element including a drive element disposed in the tubular column, an expansion plunger connected to the drive element for axially inserting the expansion plunger partially into a tube, an expansion sleeve formed of separate clamping jaws for engaging the tubes, the clamping jaws having ends being insertible into a tube, and a holding element movable by the expansion plunger for engaging the ends of the clamping jaws, the expansion plunger being axially movable toward the tubular column by the drive element in a opening motion causing the clamping jaws to release the tube, and the expansion plunger being axially movable away from the tubular column in a closing motion causing the clamping jaws to engage the tube.

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Rockanje, Netherlands

Huibrecht Pieter Vermaat