Jellyfish cause stop of production at unit Oskarshamn 3Published 2013-09-30 13:27
At noon on Sunday 29 September, the production at unit Oskarshamn 3 (O3) was manually shut down due to a large amount of jellyfish present at the cooling water intake.
The operations management at unit O3 chose to disconnect the facility from the grid at noon on Sunday due to a large amount of jellyfish present at the cooling water intake. This decision is a preventive safety measure in order for the unit to not be automatically shut down due to too low cooling in the condenser.
The function of the cooling water in the condenser is to cool down the steam so that it is reformed in to water again, and subsequently brought in to the reactor vessel. This cooling water has no connection to the cooling of the reactor vessel.