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Contra-expertise on the determination of radioactivity of waste water and ventilation air of the Borssele nuclear power plant : Period 2014

Contra-expertise op bepalingen van radioactiviteit van afvalwater en ventilatielucht van de kernenergiecentrale Borssele : Periode 2014

Synopsis

Within the framework of a monitoring programme, the RIVM measures the release of radioactivity into the waste water and atmosphere of the nuclear power plant at Borssele. Measurements are carried out eight times per year. This form of counter-expertise is aimed at verifying and supporting the reliability of the analyses carried out by the Borssele plant. The two different sets of measurements are generally in agreement, as is also the case in 2014.
The agreement in the activity concentrations of gamma emitters in waste water was good with a few exceptions. Some differences concern radionuclides in waste water with a tendency to attach to solid particles. These differences originate from an inhomogeneous distribution in the water sample and can hardly be improved.
RIVM analyzed eight waste water samples and eight samples of ventilation air taken by KCB at various time points dispersed throughout the year. For 3H in waste water degree of the agreement was less than the agreement in the last report.

In ventilation air no gamma activity was observed. The agreement in 3H and 14C, which were collected by a zeolite cartridge, were in the second and third quarter reasonable to good. This was a significant improvement as compared to the years before.

RIVM carried out this counter-expertise on behalf of the Department of Nuclear Safety, Security and Safeguards of the Dutch Ministry of Infrastructure and Environment. Starting from the 1st of January 2015, the KFD is reorganized into the Authority for Nuclear Safety and Radiation Protection (ANVS).
 

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