1. Security: above and below ground level
Oasen
Security: above and below ground level
Thom de Kort
Lisbon
March 2009

2. Oasen, a Dutch water company
Security, our principles
Security projects above ground level
Security projects below ground level

3. Drinking water company Oasen 33 municipalities

4. Groundwater is the source of our water.

5. Oasen in numbers: customers
7.200 Company’s
Water production
47 million m3/yr
per person: 45 m3/yr

6. Oasen in numbers: company
250 personnel
21Stations
1 HQ

7. 4000 km of pipes

8. Purification plant De Laak
Renovation first
filterstep
-Demolishment Office
building
Building new
reservoir

9. Renovation Purification Plant Rodenhuis
- Renovation of largest plant
of Oasen:
Construction of new purification
Step: softening of water;
Renovation of sand filtration
Renovation installations, piping…
- Construction time: 4 years

10. Softening our water

11. Oasen, a Dutch water company
Security, our principles
Security projects above ground level
Security projects below ground level

12. Softening our water Principles Protection of water quality
No access for strangers
Distribution network under pressure
Awareness of personnel
VEWIN regulations / good housekeeping

13. Oasen, a Dutch water company
Security, our principles
Security projects above ground level
Security projects below ground level

14. Security above ground level: example
A pumping station before renovation of Security facilities

15. During the renovation of
the security facilities

16. Pilot: pumping station Gorinchem

18. Oasen, a Dutch water company
Security, our principles
Security projects above ground level
Security projects below ground level

19. Pilot online measurements’’
Pilot online measurements
Pressure sonde
EGV sonde

20. Pilot online measurements

21. Pressure regulated valve

22. Conclusions Work towards basic level on all locations Experiments with advanced security Pilots online measurements Sharing knowledge in sector