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14CO2 ACTIVITY IN AIR SAMPLES AND DILUTION FACTOR EVALUATION OF KAKRAPAR GUJARAT SITE, INDIA

Published online by Cambridge University Press:  15 August 2023

A Chandrakar Open the ORCID record for A Chandrakar [Opens in a new window] ,
A K Patra ,
C P Joshi ,
A Jain ,
D P Nankar ,
D Badhai ,
S Karthik ,
I V Saradhi  and
A V Kumar
A Chandrakar*
Affiliation:
Environmental Survey Laboratory (ESS, EMAD, BARC), Kakrapar Gujarat Site, P.O. Anumala, Surat District, Gujarat-394651, India
A K Patra
Affiliation:
Environmental Survey Laboratory (ESS, EMAD, BARC), Kakrapar Gujarat Site, P.O. Anumala, Surat District, Gujarat-394651, India
C P Joshi
Affiliation:
Environmental Survey Laboratory (ESS, EMAD, BARC), Kakrapar Gujarat Site, P.O. Anumala, Surat District, Gujarat-394651, India
A Jain
Affiliation:
Environmental Survey Laboratory (ESS, EMAD, BARC), Kakrapar Gujarat Site, P.O. Anumala, Surat District, Gujarat-394651, India
D P Nankar
Affiliation:
Environmental Survey Laboratory (ESS, EMAD, BARC), Kakrapar Gujarat Site, P.O. Anumala, Surat District, Gujarat-394651, India
D Badhai
Affiliation:
Health Physics Unit, KAPS-1&2, Kakrapar Gujarat Site, P.O. Anumala, Surat District, Gujarat-394651, India
S Karthik
Affiliation:
Health Physics Unit, KAPS-1&2, Kakrapar Gujarat Site, P.O. Anumala, Surat District, Gujarat-394651, India
I V Saradhi
Affiliation:
Environmental Monitoring and Assessment Division (EMAD), BARC, Mumbai-400 085, India
A V Kumar
Affiliation:
Environmental Monitoring and Assessment Division (EMAD), BARC, Mumbai-400 085, India
*
*Corresponding author. Email: amolchandrakar@npcil.co.in
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Abstract

14CO2 activity in air samples collected at Kakrapar Gujarat Site, India, was measured, and site-specific dilution factor for 14CO2 has been evaluated. 14CO2 activity in air samples was monitored for 72 different sampling events at onsite stack of Nuclear Power Plant (NPP) and at ESL meteorology laboratory (at 1.6 km from NPP stack). 14CO2 activity in air at stack of NPP and at ESL meteorology laboratory was observed to 0.10–0.18 TBq (GWe.year)–1, with mean value 0.12 TBq (GWe.year)–1 and ≤0.04–0.13 Bq m–3, with mean value 0.08 Bq m–3 respectively. The results were correlated with meteorological parameters. Site specific dilution factor for 14CO2 in air was evaluated at 1.6 km and was found to be in the range of 4.6E-05 to 21E-05 s m–3. Inter angle (degree) between plume direction and fixed sampling location and rainfall (mm) are found to be the important influencing parameters for dilution factor of 14CO2 in air.

Keywords

14C14CO2dilution factorGaussian plume dispersion model (GPM)inter angleKakraparnuclear power plant (NPP)PHWR
Type
Research Article
Information
Radiocarbon , Volume 65 , Issue 4 , August 2023 , pp. 819 - 831
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of University of Arizona

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