Bohunice NPP: 10 years without automatic reactor scram

21/04/2016
Bohunice NPP: 10 years without automatic reactor scram
In March 2016 Bohunice V2 nuclear power plant achieved a significant success in operating its Unit 4 – 10 years without an automatic reactor scram.

Bohunice nuclear power plant achieved a significant success in operating its units – in March 2016 it filed 10 years without an automatic reactor scram at Unit 4.*

Achieving smooth operation is not taken for granted in the complexity of nuclear power plants operation. This success has been attained mainly as a result of the well-handled modernisation and the 7% capacity increase of both V2 units (from 440 to 505 MWe per unit), completed in 2010. It would not have been possible without the commitment and professionalism of the staff engaged in their everyday work at Bohunice NPP, both in the preparatory stage but also during the actual implementation of the aforementioned projects.

On 10 March 2016 it was exactly 10 years since the last actuation of the automatic reactor scram at Unit 4 of the V2 nuclear power plant at Jaslovské Bohunice, western Slovakia. On the same day in 2006 the unit worked in secondary control power and at 13:17 both two turbo-generators were shut down through the actuation of protections due to high temperature in the bearings. Subsequently, the closure of quick-closing valves of the last working turbo-generator lead to the first type automatic reactor scram.

*In the original article we wrote: "In March 2016 Bohunice nuclear power plant achieved a significant success in operating its V2 units – 10 years without any automatic reactor scram". The correct wording is: "In March 2016 Bohunice V2 nuclear power plant achieved a significant success in operating its Unit 4 – 10 years without any automatic reactor scram".