Link to the study - European Parliament - Europa

Policy Department D: Budgetary Affairs
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radioactive waste, 5) systems’ reduction and shutting down), V1 NPP has reached stages 4) and 5). All
spent nuclear fuel has been transported out of the facility, only the selected support systems are in
operation in accordance with operational regulations valid for Stage 1 of decommissioning. Other
obsolete systems are dismantled and operational radioactive waste is being processed according to
conditions set in the Decommissioning Licence.
In order to further reduce risks (which are thus narrowed mainly to conventional labour protection
and radiation protection) the following decisions have been made:
- all personnel entrances into & works in V1 NPP are minimised to lowest possible extent required
by the nature of the decommissioning works and/or legislation in order to minimise movement
of personnel and thus to minimise the probability of safety incident,
- pre-dismantling decontamination of systems is being done in order to lower the dose rates to
workers,
- continuous constant radiological monitoring of all work areas and at radiological borders
- precise planning of dismantling works.
Which technical challenges were encountered so far in the project? How did those influence
costs and time frame?
JAVYS has not experienced any major unexpected technical challenges during pre-decommissioning
and decommissioning projects’ implementation so far.
It is natural that some minor obstacles had been encountered in some of the already implemented
decommissioning projects, however, these obstacles had no serious impacts on overall scheduled
project costs or time frame.
Concerning BIDSF projects to be implemented in the future: In order to prevent occurrence of
unexpected obstacles during later decommissioning projects and to further allow preparation of as
detailed as possible scheduling of activities within 2 nd stage decommissioning projects, JAVYS
conducted the key background study – the Feasibility Study for the Management of V1 NPP Primary
Circuit Components. Based on selected alternative for handling, dismantling and disposal of Primary
Circuit Components JAVYS will further elaborate consecutive projects for dismantling in the
Controlled Area.
Have lessons been learned by technical challenges so far?
In order to apply lessons learned by companies worldwide JAVYS set up an extensive system of
national and international trainings in order to avoid mistakes already encountered in other
decommissioning projects. One of the most important sources of information has become attending
meetings of Technical Advisory Group within the Cooperative Program for Decommissioning, where
exactly such cases are being discussed.
Based on the gained knowledge and in compliance with the V1 NPP decommissioning strategy JAVYS
thus proceeds from less complicated dismantling projects (non-contaminated environment of the
Secondary circuit) to more sophisticated dismantling activities (contaminated systems’ dismantling
within Controlled area) in order to personally gather the necessary experience.
So far major lesson learnt was in connection of thermal insulation removal in the Turbine hall.
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