US-based GE Hitachi Nuclear Energy (GEH) has been awarded a three-year contract by Swedish plant operator OKG to support the dismantling of two reactors at the Oskarshamn nuclear power plant.

The contract covers the segmentation of reactor pressure vessel internals for units 1 and 2 and will include dismantling, cutting and packing the reactor internals for final disposal. Work will begin in January and continue until 2019.

Oskarshamn 1 is a 473MWe boiling water reactor (BWR) that began operating in 1972 and is scheduled to shut down in 2017. Unit 2, a BWR that began operating in 1974, closed in 2015.  German utility E.ON, the major shareholder in OKG, decided in October 2015 that Oskarshamn 1&2 will be shut down permanently. Unit 3 is unaffected by the decision.

"One condition required in order for Oskarshamn unit 3 to be able to produce climate-efficient electricity until the year 2045 is that we perform the decommissioning activities at units 1&2 in a safe and cost-efficient manner," said OKG managing director Johan Dasht.