Civil Engineering Reference
In-Depth Information
Fig. 4.2
Concept of linear
dose-effect relation [
8
,
15
]
4.5.3 Acute Radiation Syndrome
Damage to the bone marrow occurs between 1 and 20 Gray. The extent of the
disorder, and the therapy employed, ultimately decide whether the irradiated
accident victim survives.
Gastro-intestinal disorders are produced at
>
2 Gray (nausea, vomiting,
hyposthenia).
At more than 6-8 Gray, there are practically no chances of survival [
9
,
17
,
18
].
4.6 Permissible Exposure Limits for Radiation Exposures
The International Commission on Radiological Protection (ICRP) has published
recommendations about permissible radiation exposures to man from nuclear
installations (ICRP 60 [
5
] and ICRP 103 [
7
]). In those recommendations, a distinc-
tion is made between occupationally exposed persons and individual members of
the public. Considerable lower levels for exposure limits of the general population
were set.
