• Title/Summary/Keyword: Radioactive Inventory

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Prediction of Radionuclide Inventory for the Low- and Intermediate-Level Radioactive Waste Disposal Facility by the Radioactive Waste Classification (방사성폐기물 신분류기준을 고려한 중저준위 방사성폐기물 처분시설의 핵종재고량 예측)

  • Jung, Kang Il;Jeong, Noh Gyeom;Moon, Young Pyo;Jeong, Mi Seon;Park, Jin Beak
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.14 no.1
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    • pp.63-78
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    • 2016

  • To meet nuclear regulatory requirements, more than 95% individual radionuclides in the low- and intermediate-level radioactive waste inventory have to be identified. In this study, the radionuclide inventory has been estimated by taking the long-term radioactive waste generation, the development plan of disposal facility, and the new radioactive waste classification into account. The state of radioactive waste cumulated from 2014 was analyzed for various radioactive sources and future prospects for predicting the long-term radioactive waste generation. The predicted radionuclide inventory results are expected to contribute to secure the development of waste disposal facility and to deploy the safety case for its long-term safety assessment.

  • https://doi.org/10.7733/jnfcwt.2016.14.1.63 인용 PDF KSCI

Application of Dose to Curie Conversion Method using MCNP-4C code for the evaluation of Radionuclide Inventory in a Radioactive Waste Container

  • Sang-hee, Kang;Hwang, Ki-ha;Lee, Sang-chul;Lee, Kun-jai;Kim, Tae-wook;Kim, Kyoung-deok;Herr, Young-hoi;Song, Myung-jae
    • Proceedings of the Korean Radioactive Waste Society Conference
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    • 2004.06a
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    • pp.174-174
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    • 2004

  • It is necessary to perform the radionuclide inventory assessment for the disposal of low and intermediate radioactive waste containers. The $\gamma$ nuclide analyzer can be used for the assessment of containers. However, if the radioactivity in the containers is extremely low or high, radionuclide inventory of the containers can not be evaluated properly. Also, gamma scanning method is time consuming and has economical burden to the utilities.(omitted)

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Prediction of Radionuclide Inventory for Low- and Intermediate-Level Radioactive Waste by Considering Concentration Limit of Waste Package (처분방사능량제한치를 고려한 중저준위 방사성폐기물 처분시설의 핵종재고량 산정(안))

  • Jung, Kang Il;Kim, Min Seong;Jeong, Noh Gyeom;Park, Jin Beak
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.15 no.1
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    • pp.65-82
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    • 2017

  • The result of a preliminary safety assessment that was completed by applying the radionuclide inventory calculated on the basis of available data from radioactive waste generation agencies suggested that many difficulties are to be expected with regard to disposal safety and operation. Based on the results of the preliminary safety assessment of the entire disposal system, in this paper, a unit package exceeding the safety goal is selected that occupies a large proportion of radionuclides in intermediate-level radioactive waste. We introduce restrictions on the amount of radioactivity in a way that excludes the high surface dose rate of the package. The radioactivity limit for disposal will be used as the baseline data for establishing the acceptance criteria and the disposal criteria for each disposal facility to meet the safety standards. It is necessary to draw up a comprehensive safety development plan for the Gyeongju waste disposal facility that will contribute to the construction of a Safety Case for the safety optimization of radioactive waste disposal facilities.

  • https://doi.org/10.7733/jnfcwt.2017.15.1.65 인용 PDF KSCI

Initial Release of Nuclides from Spent PWR Fuels

  • Kim, S. S.;K. S. Chun;Kim, Y. B.;Park, J. W.
    • Proceedings of the Korean Radioactive Waste Society Conference
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    • 2004.02a
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    • pp.238-244
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    • 2004

  • The relationship between the leaching and gap inventory of spent fuel has been studied. When a specimen of J44H08 spent PWR fuel with 38 GWD/MTU has been leached in the synthetic granitic groundwater in Ar atmosphere, the released fraction of cesium was increased rapidly up to 0.7% at around 500 days and stayed below 0.8% until 3 years. This 0.7% of cesium might be released from the gap in this fuel. The measurement of gap inventory with C15I08 spent PWR fuel, having 35 GWD/MTU and 0.22% of fission gas release, was also determined near 0.6% for the cesium, which is a similar fraction of cesium released from the leaching experiment with J44H08 fuel. Its gap inventories of strontium and iodine were about 0.03 and less than 0.2% respectively. Respective fractions of cesium and strontium in grain boundary of C15I08 were 0.78, 0.09%.

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Establishment of Radioactive Waste Acceptance Requirements for Near-Surface Repository (국내 천층처분시설 방사성폐기물 수용요건 및 이행체계 수립)

  • 정찬우;안상면;이윤근;석태원;박상훈
    • Proceedings of the Korean Radioactive Waste Society Conference
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    • 2003.11a
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    • pp.261-265
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    • 2003

  • This paper proposes acceptance requirements and the corresponding implementation strategy for the near-surface repository of low- and intermediate-level radioactive wastes. The proposed requirements include details on waste classification and radionuclide concentration limitation and inventory analysis. The strategy considers a relevant linking between predisposal waste management, disposal safety assessment and the overall disposal system.

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