Evaluation of the 14C release characteristics of a reactor building using high-compression collection equipment in Korean pressurized water reactors

Yang, Yang-Hee; Lee, Gab-Bock; Son, Soon Hwan

doi:10.1016/j.nucengdes.2012.04.017

Cited by 2 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, radiocarbon emissions require monitoring because airborne radiocarbon can accumulate in photosynthesising organisms, such as plants used as human food. 1 , 2 Due to its long half-life, C14 has a high residence time in the environment and requires long-term monitoring. Currently, radiocarbon monitoring is mostly based on liquid scintillation counting (LSC) or accelerator mass spectrometry (AMS).…”

Section: Introductionmentioning

confidence: 99%

“…However, emissions of gaseous beta-emitters, such as radiocarbon (C14) and tritium, are still challenging to monitor as a suitable method for their automatic on-line detection is lacking. In particular, radiocarbon emissions require monitoring because airborne radiocarbon can accumulate in photosynthesising organisms, such as plants used as human food. , Due to its long half-life, C14 has a high residence time in the environment and requires long-term monitoring. Currently, radiocarbon monitoring is mostly based on liquid scintillation counting (LSC) or accelerator mass spectrometry (AMS). , Although very sensitive, these techniques are essentially laboratory-based and cannot be reasonably converted to automated, field-deployable instruments.…”

Section: Introductionmentioning

confidence: 99%

“…Their pathways in an NPP depend on the structure of the power plant, but typically, they are evacuated through the NPP stacks. The released C14 can be assimilated by living organisms outside the facilities, and therefore, C14 emissions must be monitored. , The molecular form of radiocarbon determines how it affects the environment. In particular, CO 2 is absorbed by all photosynthesizing organisms and is therefore a high risk for the environment, while CH 4 is mainly a byproduct of organic activity and can be exploited only by specialized methanotrophic bacteria and archaea .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On-Line Monitoring of Radiocarbon Emissions in a Nuclear Facility with Cavity Ring-Down Spectroscopy

et al. 2021

View full text Add to dashboard Cite

There are currently no suitable methods for sensitive automated in situ monitoring of gaseous radiocarbon, one of the main sources of radioactive gas emissions from nuclear power plants. Here, we present a transportable instrument for in situ airborne radiocarbon detection based on mid-infrared cavity ring-down spectroscopy and report its performance in a 1-week field measurement at the Loviisa nuclear power plant. Radiocarbon is detected by measuring an absorption line of the 14 CO 2 molecule. The time resolution of the measurements is 45 min, significantly less than the few days’ resolution of the currently used technique, while maintaining a comparable sensitivity. The method can also assess the prevalence of radiocarbon in different molecular species in the airborne emissions. The optical in situ monitoring presented is a completely new method for monitoring emissions from nuclear facilities.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

On-Line Monitoring of Radiocarbon Emissions in a Nuclear Facility with Cavity Ring-Down Spectroscopy

et al. 2021

View full text Add to dashboard Cite

show abstract

Cavity Ring-Down Spectroscopy Analysis of Radiocarbon from Nuclear Waste Materials

Lehmuskoski,

Genoud,

Leskinen

et al. 2024

ACS Omega

View full text Add to dashboard Cite

Radiocarbon analysis of nuclear waste produced in nuclear facilities lacks fast, in situ detection methods. Moreover, the amount of radiocarbon desorbing from graphitic waste is not well known. In this study, we demonstrate the use of mid-infrared cavity ring-down spectroscopy combined with an automatic sample processing unit as a method to examine radiocarbon concentration in three types of nuclear waste: spent ion-exchange resin, graphite, and graphite outgassing in sealed storage crates. The solid samples were gasified, which allowed analyzing the effect of heating on the radiocarbon outgassing from the samples. The presented method also enabled examination of molecular speciation of the radiocarbon in the samples. The method performed well with the graphite and gaseous samples, but the analysis of the spent ion-exchange resin did not produce repeatable results due to high N 2 O concentrations. In the future, the presented method can be used in situ at nuclear facilities and expanded to a wider variety of sample materials than those presented here.

show abstract

Evaluation of the 14C release characteristics of a reactor building using high-compression collection equipment in Korean pressurized water reactors

Cited by 2 publications

References 0 publications

On-Line Monitoring of Radiocarbon Emissions in a Nuclear Facility with Cavity Ring-Down Spectroscopy

On-Line Monitoring of Radiocarbon Emissions in a Nuclear Facility with Cavity Ring-Down Spectroscopy

Cavity Ring-Down Spectroscopy Analysis of Radiocarbon from Nuclear Waste Materials

Contact Info

Product

Resources

About