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Workreport 2017-1

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Name:

Fracture Specific Water Sampling and Electrical Conductivity Measurements at the Olkiluoto Site in Eurajoki, Drillholes OL-KR35 and OL-KR53

Writer:

Ripatti, K., Pöllänen, J., Lamminmäki, T.

Language:

English

Page count:

90

Summary:

Fracture specific water sampling and electrical conductivity (EC) measurements were performed at selected fractures in drillholes OL-KR35 and OL-KR53 at the Olkiluoto investigation site in the time period from July to November in 2014. The measurements were conducted using Posiva Flow Log, Difference flow method (PFL DIFF) with a configuration for water sampling (PFL Water Sampler, PFL WS). The purpose of the measurements was to get a fracture specific water samples for groundwater analysis. This report presents the principles of the method and the results of measurements and samplings.

The main point in the investigation programme was water sampling. The incidental measurements were carried out for controlling the quality of the sampling. Flow and single point resistance (SPR) measurements were performed in order to locate the target fractures for the sampling. During the sampling at a target fracture the flow rate, electrical conductivity and temperature of the flowing water were also monitored.

Keywords:

Water sampling, geochemistry, groundwater, flow, measurement, bedrock, drillhole, electrical conductivity, Posiva Flow Log.

File(s):

Fracture Specific Water Sampling and Electrical Conductivity Measurements at the Olkiluoto Site in Eurajoki, Drillholes OL-KR35 and OL-KR53 (pdf) (41.6 MB)


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