here - Atomic Energy Regulatory Board
here - Atomic Energy Regulatory Board
here - Atomic Energy Regulatory Board
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water bodies was lost due to human activities during this<br />
period. The specific impacts on water bodies are provided<br />
below:<br />
Due to additional natural vegetation cover<br />
3.09 sq.km (1.33%)<br />
Due to developmental activities 0.68 sq.km<br />
(0.29%)<br />
Due to additional farming 2.95 sq.km<br />
(1.26%)<br />
Due to aquaculture farms 28.56 sq.km<br />
(12.24%)<br />
From the above study it was deduced that t<strong>here</strong> is<br />
no major change in the area under water bodies due to<br />
the commissioning of the MAPS or other developmental<br />
activities in the area since 1972.<br />
9.4.1.2 Development of Decision Making Tools in<br />
GIS Environment for Emergency Response<br />
System for NPPs<br />
A work on decision-making tools for emergency<br />
response system for NPPs was taken up. Under this, a<br />
user-friendly query was built on plume dispersion pattern<br />
using AML (Arc Macro Language) program in GIS<br />
platform.<br />
GUI based user interface tool for emergency<br />
response system was created to display the probable path<br />
of plume direction with other socio-economic details such<br />
as population, data on live stock, data on water bodies<br />
with the background of satellite imageries.<br />
A typical plume pop-up window is shown in Fig.<br />
9.4. Further work is in progress.<br />
Fig. 9.4: Typical Plume Pattern<br />
9.4.2 Hydro Geological Investigations at<br />
Kalpakkam<br />
The water table fluctuations for the entire year was<br />
measured in 15 observation borewells in the entire study<br />
area. The groundwater samples were collected for analysis<br />
for major ions. Rainfall is the only source of recharge, which<br />
is noted from immediate response of water table with<br />
respect to season.<br />
9.4.2.1 Geophysical Survey<br />
The resistivity survey is a geophysical technique to<br />
interpret the lithological boundaries (aquifer characterisation)<br />
from the resistivity variations with respect to depth. The<br />
suvey was carried out in 5 different stations. The<br />
resistivity survey indicates that the area is characterised by<br />
three distinct litho units at profile station 1 (Fig. 9.5) viz.<br />
sandy layer with clay pockets (4 m thickness) overlying<br />
weat<strong>here</strong>d and fractured rock of thickness 11 m. This<br />
weat<strong>here</strong>d and fractured layer is underlined by massive<br />
charnockite beyond 15 m.<br />
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