Company JAVYS transported the last of twelve 145-tonne steam generator from the decommissioned V1 NPP in Jaslovské Bohunice. Transport of steam generators was a “unique” activity in the history of Slovakia and the V1 NPP decommissioning process now continues in the primary circuit.

The first steam generator was transported on the 13th of March, 2019 at 11.00 am, the last - twelfth steam generator - on the 11th of July at 11.00 am. Weight of one steam generator is 145 tonnes, length 11.8 m and inner diameter 3,210 mm. High weight of the steam generators (SG) required a special semi-trailer and an extension of the slab openings above the steam generators, which had never been opened since construction.

The removal of each steam generator was preceded by a thorough preparation of a team of specialists. The load handlers had to plan it so that each piece could have been removed individually and safely from its original location and reloaded onto a remote-controlled transport vehicle. This is one of the reasons why we did not encounter any technical problems during the transport.

The process of transport of steam generators from the decommissioned NPP took place for the first time in Slovakia's history and was carried out on a special equipment borrowed from Austria. By transporting the steam generators, we transported a total of 1,872 tonnes of material, of which approximately 1,360 tonnes of metal will be returned to the recycling process.

The steam generators were gradually moved from the V1 NPP to the former V1 NPP turbine hall, where a special workplace is being established and a prototype of the cutting device for fragmentation is being developed (fragmentation - cutting). The fragmentation process will start on the 1st of September 2019.

Company JAVYS, a. s., continues with decommissioning of the shutdown V1 nuclear power plant (NPP) in the primary circuit. The demanding process of transport of the first steam generator took place during the European Commission's monitoring mission (13-14 March 2019), led by DG ENERGY Director Massimo Garribba:

“The EU co-funded programme for the decommissioning of Bohunice V1 reactors in Slovakia is amongst the most advanced in Europe with the ambition to be the first case of complete dismantling and site release for this specific reactor technology (VVER Russian design). The Slovak Republic put in place an organisation and forces on the ground, which are proving to be effective and efficient means to maximise the chances for this programme to become a benchmark for other decommissioning activities and eventually a success story to tell.”

The deadline of the V1 NPP decommissioning process is the year 2025.

In the Slovak Republic, Jadrová a vyraďovacia spoločnosť, a. s. (JAVYS) provides activities in the area of back end of the nuclear energy. Its key activities include decommissioning of A1 and V1 nuclear power plants, radioactive waste management, spent nuclear fuel management, management of institutional radioactive waste and collected radioactive materials in the territory of the Slovak Republic. In all its activities, company JAVYS, a. s. pays particular attention to safety, quality and environment protection. Within the V1 NPP and A1 NPP decommissioning process, a crucial objective of the company is the environmental site restoration.

Mgr. Miriam Žiaková

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