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Nuclear technology, power plant technology

Philippsburg power plant: Crane retrieval system in Block 2

The determining factors were the boundary conditions: the crane trolley has to drive with the crane bridge and an increased dose rate could be expected outside of the parking and waiting positions. Kraftanlagen Heidelberg was tasked with creating a solution. The task was the development of an autonomous retrieval system while taking into account the maximum forces involved, the increased dose rate at the installation site and simple operability from the parking and waiting positions.

We developed a retrieval system that is installed at the crane bridge and can be operated from the parking and waiting position. As a chain drive, the retrieval system moves along independently and, if necessary or for recurring tests, is coupled manually.

The crane trolley can be moved into the desired position with the help of a crank. The system operates in both directions. In order to significantly lower the cost of the retrieval system, only standard parts were used. Our concept can be retrofitted on almost any crane.

The scope of services also included the creation of pretest documents with the corresponding calculations, production drawings, weld plans and test sequence plans.

Following the fabrication and installation of the retrieval system, the services were approved by the operator and the experts without flaws.

Fact sheet

EnBW Kernkraft GmbH

Technical data:

  • Chain type: Duplex roller chain 12B-2
  • Chain length: 14,490 mm
  • Coupling: mechanically controlled curved-tooth coupling
  • Gearbox: Angular gearbox with a transmission ratio of 1:30 revolutions
  • Type of drive: Hand crank max. 0.05 kN




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