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84 APPENDIX IV
TABLE XV.
1SPRA - PRINCIPAL CRITICAL PATHWAYS
Critical
radionuclides
Critical pathways
Critical population groups
Gaseous effluents
41 Ar Atmosphere Cadrezzate residents
131 I Atmosphereherbage-milk
Cadrezzate infants
Liquid effluents
90Sr
137 _
Cs
Lake Maggiore
water-drinking
water
Lake Maggiore
water-fish
Joint Research Center
residents
Families of the professional
fishermen
3. Actual status of the monitoring network
Control of the gaseous effluents is carried out through (1)
measurements performed at the emission sources (reactor stacks)
for the evaluation of the quality and quantity of the activity released;
and (2) measurements performed (after dilution) in the environment.
The latter are carried out by means of a network of monitoring stations
located along the fence of the Establishment as well as in some
neighbouring villages and equipped with all or part of the following
material: a device for the collection of atmospheric dust on paper
filter and of radioiodine on activated charcoal; a device for the
measurement of the exposure rate with telemetering and recording;
a thermoluminescence dosimeter for the measurement of the integrated
exposure; and a pot for the collection of the deposited matter.
In addition to the station network there is a mobile unit equipped
with a system for the collection on filters of atmospheric dust and
for the measurement of its radioactivity; a scintillation counter,