Guidelines

ENSI issues guidelines either in its capacity as a regulatory authority or based on a mandate in an ordinance. Guidelines are implementation support documents that formalize the implementation of legal requirements, and facilitate uniformity of the implementation practice.

The full list of ENSI guidelines in force is only available in German.

Documents

Guideline ENSI-G20 stipulates the requirements for the design and operation of the reactor core, fuel assemblies and control rods of nuclear power plants. It includes corresponding requirements for levels of defence 1 to 4a. Requirements that do not explicitly refer to individual levels of defence are applicable to levels of defence 1 to 3.

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This guideline formalizes the requirements for the application of Probabilistic Safety Analysis (PSA) for nuclear power plants. It presents the general principles, the requirements for maintenance and upgrade of the PSA, as well as the minimum required scope of PSA applications. The risk measure and evaluation criteria to be applied are defined for these PSA […]

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This Guideline stipulates the requirements for the organisation of nuclear installations in the operational and post-operational phase. It includes references to other ENSI Guidelines as follows: The requirements for the training and qualification of personnel at nuclear installations are stipulated in Guidelines ENSI-B10 and ENSI-B13. The requirements for the emergency response organisation at nuclear installations […]

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This guideline stipulates the requirements to be met by documentation for nuclear installations during the specified operation and post-operation phases. The requirements stated in this guideline apply to operational documentation as per Annex 3 of the Nuclear Energy Ordinance (732.11) and to documentation as per the Ordinance on the Qualifications of Personnel in Nuclear Installations […]

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This guideline regulates the general requirements for the basic training, recurrent training and continuing education of the personnel in Swiss nuclear  nstallations that is relevant to nuclear safety. Pursuant to the Ordinance on the Qualifications of Personnel in Nuclear In-stallations (732.143.1), it regulates the further requirements on training, licensing exams, repeat training, further education and […]

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The guideline ENSI-A05 defines the quality and scope requirements regarding the plantspecific level 1 and level 2 Probabilistic Safety Analysis (PSA) for both internal and external events and covering all operating modes of the nuclear power plants. In  addition, this guideline establishes the PSA requirements for other nuclear installations. The quality and scope requirements in […]

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