Measurements of 14C from nuclear power plants with the AMS technique

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Abstract

One of the most important radionuclides spread from nuclear power plants to be surroundings is 14C because of its long half-life and its incorporation in living organisms. To measure the emission of 14C in the ventilation air from the stacks is difficult, not only because it is a pure β-emitter but also because the ventilation air normally contains much higher activity concentrations of noble gases and activation products. These problems can be overcome if the activity concentration of 14C can be measured with accelerator mass spectrometry (AMS). Air samples have been taken from the stack of the Swedish nuclear power station Forsmark 1. An automatic sampler for continuous sampling for up to 14 days has been constructed. For measurements with the AMS technique only about 10 mg of carbon is needed, this corresponds to 0.050 m3 of air, which makes this method favourable considering the several m3 which are needed for on-line sampling for β-spectrometry. The first measurements show that the activity concentration in stack air is about 15–20 Bq/m3.

References (10)

  • U.A.S. Tapper et al.

    Nucl. Instr. and Meth.

    (1988)
  • M.M. Fowler et al.

    Nucl. Instr. and Meth.

    (1975)
  • J.S. Vogel et al.

    Nucl. Instr. and Meth.

    (1984)
  • I. Levin et al.
  • R. Hesböl et al.

    Studsvik/NW-82/347

    (1982)
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