Indian Rail
Health Hazard

This applies to Indian railways for all their trains and Airconditioned coaches.

This awareness message is related to public health.

All I wanted a confirmation from Indian Railways that they are aware of this

already and taking care of this.

The airconditioned compartments uses recirculation in their airhandling unit

and in a closed compartment this would result in excessive built up of

Carbondioxide. Unless the recirculated air is periodically exhausted and

make up treated fresh air is introduced @ 7 cfm per person there are

chances of Carbondioxide built up in excess of 500 ppm which could

be fatal to human life.