France’s Framatome has said that it was recently selected to support the emergency diesel generator (EDG) retrofit programme for the Forsmark NPP operated by Vattenfall in Sweden. Framatome will provide MAEX, the company’s Modular Analogous Excitation System, for 12 generators supplied by VEM Sachsenwerk GmbH. 

“Framatome has the technical and global expertise to consistently provide sound solutions for our customers including the non-OEM Framatome installations,” said Catherine Cornand, senior executive vice president, Installed Base Business Unit at Framatome. “This project secures the long-term operations of Forsmark for the continuation of reliable, low-carbon power generation in Sweden.”

Framatome’s excitation system provides the field of current to the rotor winding of a generator. It is a software-free modular system for brushless generators designed to provide reliability of operation, stability and fast transient response. Framatome said the flexible design is a qualified global solution for EDG systems and allows for fast and cost-effective integrations into new and existing infrastructure. The base module of the MAEX system fulfils all safety-relevant functions for voltage regulation, operation and signalisation.

Framatome’s scope also includes supervision and support of the installation in the Swedish boiling water reactors. The modernisation of the Forsmark EDG systems will start during the spring 2023 outage with completion planned 2028.

Photo: Forsmark Nuclear Power Plant, Sweden