Paragraph 3: Special provisions for trimix and heliox

The practice of diving with trimix or heliox mixes is subject to proof of aptitude by the divers and the person supervising the group in accordance with the table inAnnex III-18 a. The conditions for diving with trimix or heliox mixes are set out in annexes III-18 b and III-18 c.

In addition to the equipment listed in article A. 322-78, the organisation of a dive using trimix or heliox mix requires the presence of the following equipment at the launch or immersion site: -a weighted descent and ascent line which may also be used for decompression; -a copy of the planned dive schedule(s); -logistical support or a practice support boat with an authorised person on the surface to manoeuvre it.