Chornobyl Center for Nuclear Safety, Radioactive Waste and Radioecology

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Ecology. Measurement of Radionuclides Activity

The International Radioecology Laboratory was certified as an institution having the right to take measurements within the limits of state metrological control, such as:

Description

Parameter to be measured

Substances in the environment
(air, soil, water, etc.)

Quantity of activity per unit of volume for gamma-emitting radionuclides over 5-3000 keV energy range

3 H quantity of activity per unit of volume

Pu-238 quantity of activity per unit of volume

239,240 Pu quantity of activity per unit of volume

241 Pu quantity of activity per unit of volume

241 Am quantity of activity per unit of volume

244 Cu quantity of activity per unit of volume

237 Np quantity of activity per unit of volume

234 U quantity of activity per unit of volume

235 U quantity of activity per unit of volume

238 U quantity of activity per unit of volume

Potable water

Cs-137 specific activity

Sr-90 specific activity

Specific activity of natural mixture of 234U, 235U, 238U isotopes

Foodstuff

137 Cs specific activity

90 Sr specific activity

Solid radioactive waste (SRAW)
Liquid radioactive waste (LRAW)

Specific activity of gamma-emitting radionuclides over 5-3000 keV energy range

3 H specific activity

36 Cl specific activity

45 Ca specific activity

53 Mn specific activity

55 Fe specific activity

59 Ni specific activity

63 Ni specific activity

93m Nb specific activity

99 Tc specific activity

109 Cd specific activity

135 Cs specific activity

147 Pm specific activity

151 Sm specific activity

171 Tm specific activity

204 Tl specific activity

Pu-238 specific activity

239,240 Pu specific activity

241 Pu specific activity

241 Am specific activity

244 Cu specific activity

237 Np specific activity

234 U specific activity

235 U specific activity

238 U specific activity

90 Sr specific activity

For taking the measurements listed above, IRL uses the following state-of-the-art methods and measuring equipment:

Liquid-scintillation meter, TRI-CARB 2500

Alpha spectrometer Alpha analyst 7200-02

Low-background gas-flow radiometer Eberline
FHT-770T6

Stationary gamma spectrometers manufactured by CANBERRA with GL2020R; GC3019; GL0055P; GL0520R detectors.

Two mobile gamma spectrometers manufactured by CANBERRA with GC1018 and GR0519 detectors.

Gamma spectrometer SEG-01 with a detector made of specially pure germanium


Beta spectrometer SEB-01


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