Radiological Risks In The Construction
And Operation Of Alpine Tunnels
Author(s)
M. De Salve, M. Esposito, P. Gozzelino & M. E. Parisi
Abstract
The construction of long tunnels for railway transport poses the problem of the
evaluation of the environmental impact and the reduction and prevention of risks
for the workers and for the population. Important risks are connected with the
presence of natural ionizing radiation produced by radionuclides such as
Uranium, Thorium, Radon and their daughters. The main pathway of the workers
exposure includes both external and internal irradiation risks. LTF (Lyon Turin
Ferroviaire SAS) has performed a predictive evaluation of the radiological risk
from the analysis of litotypes found during the boreholes. This work is connected
with the project for the railway connection between Turin-Lyon and is carried
out with the collaboration of Turin Polytechnic, LTF SAS and the U-series
laboratory in Bologna. The purpose of this study is the acquisition of the
information and data necessary for the evaluation of the radiological risk in the
region affected by the works for the railway connection, with particular attention
to the areas with workers and/or local people. The results obtained allow us to
classify the litotypes for the disposal, to estimate the radioactivity sources,
considering the permeation properties, and to carry out an analysis of the
correlation between radioactivity concentrations in the litotypes and the water
sources influenced by the digging.
Keywords: radiological risk, external irradiation, Uranium, Thorium, Radium
and Potassium-40.
1 Introduction
The Italian territory is bordered in the north by a chain of Alps which needs to be
crossed in order to reach other European countries. Therefore, the studies
Keywords
radiological risk, external irradiation, Uranium, Thorium, Radium
and Potassium-40.
Related Book
Other papers in this volume
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