Oasen Security above and below ground level Thom

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

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

Drinking water company Oasen 33 municipalities

Groundwater is the source of our water.

Oasen in numbers: customers 317. 000 Customers 7. 200 Company’s Water production 47 million m 3/yr person: 45 m 3/yr 5

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

4000 km of pipes 7

Purification plant De Laak 8

Renovation Purification Plant Rodenhuis 9

Softening our water 10

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

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

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

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

During the renovation of the security facilities 15

Pilot: pumping station Gorinchem 16

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

’’ Pilot online measurements Pressure sonde EGV sonde 19

Pilot online measurements 20

Pressure regulated valve 21

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