Optimization of low-level LS counter Quantulus 1220 for tritium determination in water samples

Simulation results of the online tritiated water measurement system

“…There are several other radionuclides in the liquid effluent of a nuclear power plant, except 3 H, like 14 C, 54 Mn, 137 Cs, 58 Co, 60 Co. The b-ray generated by its decay affects the measurement results.…”

“…The b-ray generated by its decay affects the measurement results. Because the concentrations of 54 Mn, 137 Cs, 58 Co, and 60 Co were much lower than 14 C, 14 C was used as the background source, and the minimum detectable activity concentration (MDC) of the detector was analyzed. The concentration of 14 C in the liquid effluent was 37.6 Bq/L.…”

“…Because the concentrations of 54 Mn, 137 Cs, 58 Co, and 60 Co were much lower than 14 C, 14 C was used as the background source, and the minimum detectable activity concentration (MDC) of the detector was analyzed. The concentration of 14 C in the liquid effluent was 37.6 Bq/L. Because the range of rays generated by the decay of 14 C is much higher than that of b rays generated by the decay of tritiated water, the effective volume of 14 C as the background source is the total volume of tritiated water in the detector (0.42 L).…”

“…The concentration of 14 C in the liquid effluent was 37.6 Bq/L. Because the range of rays generated by the decay of 14 C is much higher than that of b rays generated by the decay of tritiated water, the effective volume of 14 C as the background source is the total volume of tritiated water in the detector (0.42 L). The activities of 14 C in the effective volume were calculated to be 15.79 Bq.…”

“…After processing, the activity of tritium in the liquid effluent was approximately 100 Bq/L. Traditional tritium concentration measurement methods include the b-ray-induced X-rays (BIXS) method [10], calorimetry [11,12], imaging plate method [13], the liquid scintillation method [14,15]. The BIXS method is a convenient and non-destructive tritium measurement method.…”