Global and regional emissions of radiocarbon from nuclear power plants from 1972 to 2016

File Description SizeFormat 
Zazzeri_Global_and_regional_CUP.pdfPublished version1.61 MBAdobe PDFView/Open
Title: Global and regional emissions of radiocarbon from nuclear power plants from 1972 to 2016
Authors: Graven, H
Zazzeri, G
Acuña Yeomans, E
Item Type: Journal Article
Abstract: CH4 and CO2 emissions from geologic sources, which are devoid of radiocarbon (14C), dilute the atmospheric 14C/C ratio. Observations of 14C/C can be used to estimate fossil fuel-derived CH4 and CO2. However, the atmospheric 14C/C ratio is perturbed by emissions of 14C from nuclear power plants (NPPs) and fuel reprocessing sites, which may affect such 14C/C-based estimation if they are not correctly quantified. We calculate NPP 14C emissions for CO2 and CH4 from 1972–2016 using standard emission factors (14C emitted per unit of power produced) and analyze trends in global and regional emissions. We use available observations of 14C emissions and power generation in Europe to assess emission factors for different reactor types, as well as potential differences related to the age or manufacturer of the NPPs. Globally, nuclear 14C emissions increase until 2005 and then decrease, mostly because of the closure of gas-cooled reactors in the United Kindom and the shutdown of light water reactors after the Fukushima nuclear accident in March 2011. Observed emission factors in Europe show strong variability, spanning values from 0.003 to 2.521 TBq/GWa for PWR and from 0.007 to 1.732 TBq/GWa for BWR reactors, suggesting more information and more sophisticated models are needed to improve estimates of 14C emissions.
Issue Date: Aug-2018
Date of Acceptance: 1-Jun-2018
ISSN: 0033-8222
Publisher: Cambridge University Press (CUP)
Start Page: 1067
End Page: 1081
Journal / Book Title: Radiocarbon
Volume: 60
Issue: 2
Copyright Statement: © 2018 by the Arizona Board of Regents on behalf of the University of Arizona. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (, which permits unrestricted reproduction in any medium, provided the originalwork is properly cited.
Sponsor/Funder: Commission of the European Communities
Funder's Grant Number: 679103
Keywords: Science & Technology
Physical Sciences
Geochemistry & Geophysics
nuclear power plants
radiocarbon emissions
0402 Geochemistry
0406 Physical Geography and Environmental Geoscience
2101 Archaeology
Publication Status: Published
Open Access location:
Online Publication Date: 2018-06-04
Appears in Collections:Space and Atmospheric Physics
Faculty of Natural Sciences

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Creative Commonsx