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Safety update: key findings and actions following the 17 January incident

Following the Safety incident on 17 January that occurred in Building 182 dedicated to Neutrino Platform (NP) activities and involving two members of the CERN personnel, a Major Safety Incident Analysis Group (MSIAG) was created as per Specific Safety Instruction, SSI-SIM-2-1 to establish all relevant facts and possible causes. Their conclusions and preliminary recommendations were submitted to the CERN Director-General on 7 February. A Major Safety Incident Board (MSIB) was then convened, which reviewed the Major Safety Incident Analysis Report produced by the MSIAG. The MSIB’s final ‘Incident Board report’, detailing conclusions and recommendations based on this review, was endorsed by the Director-General on 24 February.

As a result of their analysis, the MSIB made 24 actionable recommendations that further strengthen established safety practices in place at CERN. The majority of these focus on immediate actions required before any further NP-related activities can resume. These include reaffirming the ownership of the NP laboratory’s infrastructure and equipment and the associated roles and responsibilities in safety management and reviewing risk assessments and resulting working procedures to enhance their adaptability to activities that constantly evolve over time. Several recommendations further extend CERN-wide, specifically reinforcing workplace induction at locations with specific hazards and refining associated safety protocols.

The MSIB report will now be communicated to the recipients as defined in the SSI-SIM-2-1, which includes the recommendation owners.

In line with this SSI, CERN will ensure the prompt and effective follow up of the recommended actions for continued safe operations and collaboration in the NP laboratory and, more generally, the Organization as a whole.