Devico AS Olkiluoto September, 2007. Olkiluoto nuclear power plant. Olkiluoto Nuclear Power Plant is one of Finland's two nuclear power plants. The Olkiluoto plant consists of two reactors each 860 MW. One 1720 MW reactor is under construction. Supposed to start in 2011. Onkalo.
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Devico ASOlkiluotoSeptember, 2007
Olkiluoto Nuclear Power Plant is one of Finland's two nuclear power plants.
The Olkiluoto plant consists of two reactors each 860 MW.
One 1720 MW reactor is under construction. Supposed to start in 2011.
All nuclear waste produced in Finland must be disposed in Finland.
Olkiluoto has been determined to become the site of disposal of Finnish nuclear waste.
Long term project, intend to start up in 2020.
Access tunnel:5.5 km tunnel 1:10
level –420 m
level –530 m
Depth: 530 meter deep.
The ventilation shaft will be reamed up later.
Our drilling demands was less than 1,75 meter deviation from vertical axis.
Devico was first time hired in 2005 in Olkiluoto for a similar project
Successful results, no survey shows more than 2 meters deviation from vertical axis.
3 steerings on the way down.
Drilled two sections à 9 meters.
100-110 meters:Dogleg setting 2.5 / Dogleg app. 7
320-330 meter:Dogleg setting 2.5 / Dogleg app. 5
No return water.
Dark, very hard granite. Almost without fractures, but quart veins.
North - East