Decisions
A decision is an order of an authority in an individual case that is based on public law. It is a unilateral sovereign act. In particular, a decision establishes, modifies or revokes rights and obligations.
For changes which do not differ materially from the construction and operating licence or the decommissioning order, but which may have an influence on nuclear safety or security, the holder must obtain approval from ENSI. Approvals are also decisions.
If no appeal is filed within 30 days of the opening of a decision, it enters into law, i.e. it becomes binding.
For example, ENSI has issued the following decisions:
Decisions
- Beznau NPP decree: Hazard assumptions EXAR-2021 for the sites of the Swiss nuclear installations on the Aare PDF (10.02 MB)
- Gösgen NPP decree: Hazard assumptions EXAR-2021 for the sites of the Swiss nuclear installations on the Aare PDF (6.25 MB)
- Leibstadt NPP decree: Hazard assumptions EXAR-2021 for the sites of the Swiss nuclear installations on the Aare PDF (1.04 MB)
- Mühleberg NPP decree: Hazard assumptions EXAR-2021 for the sites of the Swiss nuclear installations on the Aare PDF (5.65 MB)
- PSI decree: Hazard assumptions EXAR-2021 for the sites of the Swiss nuclear installations on the Aare PDF (4.65 MB)
- Zwilag decree: Hazard assumptions EXAR-2021 for the sites of the Swiss nuclear installations on the Aare PDF (4.61 MB)
- KKB decree: Participation in the Topical Peer Review 2017 “Ageing Management of Nuclear Power Plants” PDF (1.03 MB)
- Gösgen NPP decree: Participation in the Topical Peer Review 2017 “Ageing Management of Nuclear Power Plants” PDF (1.03 MB)
- Mühleberg NPP decree: Participation in the Topical Peer Review 2017 “Ageing Management of Nuclear Power Plants” PDF (1.04 MB)
- Leibstadt NPP decree: Participation in the Topical Peer Review 2017 “Ageing Management of Nuclear Power Plants” PDF (1.01 MB)
- Dry Storage Ageing Project for Dual Purpose Casks PDF (201.55 kB)PEGASOS
- Leibstadt NPP decree PDF (277.61 kB)PEGASOS
- Gösgen NPP decree PDF (277.58 kB)PEGASOS
- Beznau NPP decree PDF (277.42 kB)11/2056
- Decree for the technical post-operation of Mühleberg NPP PDF (698.43 kB)
- Decree in respect of the continued operation of the Mühleberg NPP until the end of 2019 PDF (655.12 kB)
- Ruling: Permanent approval for the treatment of the Leibstadt NPP main cooling water with biocidesForderungen, PDF (1.16 MB) ENSI-AN-9298
- ENSI summary on increasing safety margins, PDF (3.17 MB) ENSI 11/1999
- ENSI requirements for the continued operation of the Mühleberg NPP up until its final shutdown in 2019 PDF (888.88 kB)
- KKB decree: Checking of the filtered containment pressure releases and protection against hydrogen fires in severe accidents PDF (214.60 kB)
- Gösgen NPP decree: Checking of the filtered containment pressure releases and protection against hydrogen fires in severe accidents PDF (237.28 kB)
- Leibstadt NPP decree: Checking of the filtered containment pressure releases and protection against hydrogen fires in severe accidents PDF (213.32 kB)
- Mühleberg NPP decree: Checking of the filtered containment pressure releases and protection against hydrogen fires in severe accidents PDF (203.85 kB)
- Extension of the approval for the treatment of the Leibstadt main cooling water with chlorine dioxide and extension of the alternative request for further treatment with sodium hypochlorite PDF (768.16 kB)
- Decree in respect of the final shutdown of the Mühleberg NPP in 2019 PDF (178.30 kB) ENSI-AN 11/1842
- ENSI requirements in respect of the final shutdown of the Mühleberg NPP in 2019 PDF (1.90 MB)
- Decree to the Beznau Nuclear Power Plant: Analysis of the targeted approach of aircraft towards the NPP PDF (1.54 MB)
- Decree to the Leibstadt Nuclear Power Plant: Analysis of the targeted approach of aircraft towards the NPP PDF (1,09 MB)
- Decree to the Mühleberg Nuclear Power Plant: Analysis of the targeted approach of aircraft towards the NPP PDF (1.08 MB)
- Decree to the Gösgen Nuclear Power Plant: Analysis of the targeted approach of aircraft towards the NPP PDF (1.53 MB)
- Letter to the Beznau NPP dated 4 July 2012 on extreme weather conditions PDF (256.24 kB)
- Letter to the Mühleberg NPP dated 4 July 2012 on extreme weather conditions PDF (256.21 kB)
- Letter to the Gösgen NPP dated 4 July 2012 on extreme weather conditions PDF (252.30 kB)
- Letter to the Leibstadt NPP dated 4 July 2012 on extreme weather conditions PDF (256.19 kB)
- Decree for the EU stress test at the Gösgen NPP on 10 January 2012 PDF (323.59 kB)
- Decree for the EU stress test at the Mühleberg NPP on the 10 January 2012 PDF (371.96 kB)
- Decree for the EU stress test at the Leibstadt NPP on 10 January 2012 PDF (283.18 kB)
- Decree for the EU stress test at the Beznau NPP on 10 January 2012 PDF (291.92 kB)
- KKB decree: Upgrade of the stack instrumentation PDF (750.80 kB)
- Decree 4 to Leibstadt PDF (1.14 MB)
- Decree 4 to Mühleberg PDF (1.13 MB)
- Decree 4 to Gösgen PDF (1.17 MB)
- Decree 4 to Beznau PDF (1.15 MB)
- Decree 3 to Beznau PDF (350.67 kB)
- Decree 3 to Gösgen PDF (332.22 kB)
- Decree 3 to Mühleberg PDF (411.94 kB)
- Decree 3 to Leibstadt PDF (282.83 kB)
- Decree 2 to Leibstadt PDF (219.81 kB)
- Decree 2 to Gösgen PDF (224.25 kB)
- Decree 2 to Beznau PDF (223.74 kB)
- Decree 2 to Mühleberg PDF (220.45 kB)
- Response of Leibstadt NPP to decree 1 PDF (478.49 kB)
- Response of Mühleberg NPP to decree 1 PDF (1.62 MB)
- Response of Beznau NPP to decree 1 PDF (820.91 kB)
- Response of Gösgen NPP to decree 1 PDF (2.43 MB)
- Decree 1 to Beznau PDF (740.49 kB)
- Decree 1 to Gösgen PDF (132.75 kB)
- Decree 1 to Leibstadt PDF (135.95 kB)
- Decree 1 to Mühleberg PDF (132.15 kB)