Siemens produces first 3D-printed part for NPP

Following the integration of 3D printing as part of its digital services portfolio, Siemens has installed a 3D-printed part in a nuclear power plant.

The replacement part produced for the Krško nuclear power plant in Slovenia is a metallic, 108mm diameter impeller for a fire protection pump that is in constant rotating operation. The original impeller was in operation since the plant was commissioned in 1981; its original manufacturer is no longer in business. Obsolete, non-OEM parts are particularly well-suited for this new technology as they and their designs are virtually impossible to obtain.

Siemens’ team of experts in Slovenia reverse-engineered and created a “digital twin” of the part. The company’s additive manufacturing (AM) facility in Finspång, Sweden, then applied its advanced AM process using a 3D printer to produce the part.

Meeting the Krško NPP’s stringent quality and safety assurance requirements required extensive testing that was performed jointly with the Krško operations team, ensuring the reliability of 3D-printed part.