Commentaries: Art. 34

The holder of an operating licence for a nuclear power plant must carry out a comprehensive safety review every 10 years (Periodic Safety Review, PSR).
For this purpose it must:
1. explain and evaluate the safety concept;
2. conduct a deterministic analysis of the safety status and a PSR;
3. explain and evaluate the overall safety status;
4. explain and evaluate whether the organisation of the plant and its personnel satisfy safety requirements.
The PSR documents must be submitted to ENSI two years at the latest before the end of any operating decade.
For the period following the fourth operating decade, proof of safety for long-term operations in accordance with Article 34a must also be submitted as part of the PSR.
ENSI shall specify the detailed requirements on periodical safety reviews in guidelines. It may provide relief for nuclear power plants for the period following their being definitively taken out of service or exempt them entirely from the obligation to submit a PSR.