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The CERN Safety Policy and Safety Rules

Safety is a priority of CERN's general policy.

CERN defines and implements a Safety Policy, the CERN Safety Policy1 that sets out the general principles governing Safety at CERN.

As an intergovernmental organisation, CERN further establishes it own Safety Rules as necessary for its proper functioning. In this process, it takes into account the laws and reguations of the Host States (France and Switzerland), EU regulations and directives, as well as international regulations, standards and directives.

The responsabilities and organisational structure in matters of Safety at CERN are defined in the Safety Regulation SR-SO1 and the subsidiary documents that complement it.

Safety covers occupational health and safety, including radiation protection, the protection of environment and the safe operation of CERN's installations, including radiation safety.

The CERN Safety Policy and the CERN Safety Rules cover all CERN activities and all persons participating in them or present on its site.

The Organization takes the necessary measures to ensure compliance with its Safety Policy and its Safety Rules.

Each person participating in the activities of the Organization or present on its site shall actively contribute to implementation of the CERN Safety Policy through exemplary conduct and, in particular, compliance with the CERN Safety Rules, the CERN Safety Objectives and best practices, actively seeking information to minise risks, avoiding dangerous situations for herself/himself and others and exercising the responsabilities assigned to her/him safely.

1 The CERN Safety Policy, the Safety Regulation SR-SO and the documents that complement it, together replace the document SAPOCO 42, as well as Safety Codes A1, A5, A9 and A10, which are no longer in force. Any reference made to the document SAPOCO 42 or to Safety Codes A1, A5, A9 and A10 in contractual documents or CERN rules and regulations shall be deemed to constitute a reference to the corresponding provisions in the CERN Safety Policy and the Safety Regulation SR-SO and the documents that complement it.

CERN Safety rules website

This website allows you to access the CERN Safety Rules, sorted by keywords or by type of documents.

Please be free to send your questions and/or suggestions related to the Safety Rules to the following address:

For questions regarding the website, please contact the HSE webmaster:

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