Accidents and Incidents Management

Accidents and Incidents Management (AIM)

Safety Code

A2 Rev. - Reporting of accidents and near misses (2005)
The objective of this code is to ensure that all the CERN units concerned with treating accidents are informed and preventive measures are established to avoid a reoccurrence. Safety Form - Internal accident report (EDH) shall be used for reporting.
A11 - Administrative Procedure following a serious Accident or Incident (2003)
In application of the "Safety Policy at CERN" document, this Code describes the proper administrative procedure to be followed in the event of a serious accident or incident (Fact-Finding Report, Accident Board, Committee of Enquiry).


Safety Instruction

IS 5 - Emergency stops (2001)
Description of the two types of emergency stops (general and local emergency stops), definition of the buildings or areas to be equipped, and effects due to these emergency stops on power supplies or accelerators. Exceptions and rules for safety equipment.
IS 37 - Alarms and alarm systems (2003)
The object is to define safety alarms and to establish general rules for the installation, maintenance, disabling, and layout of safety alarm systems generating level 3 alarms. The EDH version of the disabling form is now mandatory.
IS 51 - Operational and Information Procedures in Reponse to Accidents (2005)
The scope of this Safety Instruction is to describe operational procedures in response to accidents, to assure coordination of interventions, both at CERN and with outside emergency services as well as the transmission of information within CERN and in case of need to the Host States Authorities and media. The adopted procedures depend on the seriousness level assigned to the event.


Safety Form

Internal accident report
To be completed in accordance with Safety Code A2 Rev. 3 (EDH).
If you do not have an EDH account and only in this case, please contact by email:


Other documents of interest

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