On Thursday 9th September 2010 NRG successfully returned the High Flux Reactor (HFR) back to service following the repair of the primary cooling water system. The reactor reached full nominal power (45 MW) at 15.50 hours. With the successful restart of the HFR; NRG has completed the repair work on the reactor. Over the last months many NRG employees and external parties have worked hard to replace the corroded parts of the reducers to return the reactor to service.  NRG’s top priority during this work was the safety and health of all the employees working on the repair and in the surrounding area. There were no safety incidents during the repair period and the radiation dose levels for internal and external employees remained well below the planned limits.

Restart
With the restart of the HFR on the 9th September 2010, NRG will again supply medical isotopes for the treatment of patients worldwide and will make important contributions to nuclear technology research. The HFR is an indispensible facility for the production of radioisotopes for medical imaging and therapy and normally produces around 60% of the European annual demand. In addition, the HFR plays a key role in international energy research projects for fuel and materials testing and for nuclear waste reduction and environmental issues.
http://www.nrg.eu/hfr-repair/