On the site of intervention or hyperbaric work, for each intervention for work or other purposes, the employer draws up a safety sheet on which he indicates :
1° The date and place of the intervention or work;
2° The identity of the workers concerned as well as their function and, in the case of self-employed workers or employees of an external company, the identification of the latter;
3° The parameters relating to the intervention or work, in particular the exposure times and relative pressures;
4° The mixtures used.
A model of this document is included in the hyperbaric safety manual.