RRCAT- Raja Ramanna Centre for Advanced Technology, Indore

Cryo-engineering and Cryo-module Development Section

Physiological Effects and Recommended Exposure Limits of Nitrogen

16 - 25 % of oxygen by volume is Acceptable. Asphyxia due to oxygen deficiency is often rapid with no prior warning to the victim. A general indication of what is liable to happen is given in the table below but it should be appreciated that the reactions of some individuals can be very different from those shown.

Oxygen Content(Vol %)	Effects and Symptoms (at atmospheric pressure)
11-14	Diminution of physical and intellectual performance without person's knowledge
8 - 11	Possibility of fainting after a short period without prior warning
6 - 8	Fainting within a few minutes; resuscitation possible if carried out immediately
0 - 6	Fainting almost immediate death ensues; brain damage even if rescued

Site Designed & Maintained by Web Team, and Hosted by Computer Centre, RRCAT