“Filtration level requirement as per zoning Criteria in Nuclear facility ”
RED ZONE: Areas where significant contamination with chemical, biological, radiological or nuclear (CBRN) agents has been confirmed or is strongly suspected but the area has not been characterized. And from both skin contact and inhalation the area is presumed to be life threatening.
YELLOW ZONE: Areas where contamination with chemical biological, radiological, or nuclear (CBRN) agents is possible but the active release has ended and initial monitoring exists
GREEN ZONE: Areas where contamination with chemical biological, radiological or nuclear (CBRN) agents is unlikely. This zone covers the area beyond the expected significant dispersal range of the initial event and secondary contamination range caused by traffic and emergency responders.
Zoning Criteria in Facilities
