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Volume 9
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10.3390/pr9101725
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Article

Decontamination of a Contaminated RCP Shaft Using the SP-HyBRID Process

by
Hee-Chul Eun
1,2,*,
Na-On Chang
3,
Wang-Kyu Choi
1,
Sang-Yoon Park
1,
Seon-Byeong Kim
1,
Bum-Kyoung Seo
1,
Ki-Chul Kim
4 and
Seung-Geon An
5
1
Decommissioning Technology Research Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseong-gu, Daejeon 34057, Korea
2
Quantum Energy Chemical Engineering, University of Science and Technology, Gajeong-ro 217, Yuseong-gu, Daejeon 34113, Korea
3
Department of Nuclear Engineering, Hanyang University, Wangsimni-ro 222, Seongdong-gu, Seoul 04763, Korea
4
Nuclear Power Maintenance Engineering Center, KEPCO KPS, Munsan2Sandan1-ro 69-46, Oedong-eup, Gyeongju 38206, Korea
5
Sunkwang T&S, Gongwon-ro 3, Guro-gu, Seoul 08298, Korea
*
Author to whom correspondence should be addressed.
Processes 2021, 9(10), 1725; https://doi.org/10.3390/pr9101725
Submission received: 4 July 2021 / Revised: 22 September 2021 / Accepted: 22 September 2021 / Published: 26 September 2021
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Abstract

It is very important to minimize the waste generation for decontamination of the reactor coolant system in a nuclear facility. As an alternative to commercial decontamination technologies, an inorganic acid chemical decontamination (SP-HyBRID) process can be effectively applied to the decontamination because it can significantly reduce the waste generation. In this study, the decontamination of a contaminated reactor coolant pump shaft from a nuclear facility was conducted using the SP-HyBRID process. First, equipment for a mock-up test of the decontamination was prepared. Detailed experimental conditions for the decontamination were determined through the mock-up test. Under the detailed conditions, the contaminated shaft was successfully decontaminated. The dose rate on the shaft surface was greatly reduced from 1400 to 0.9 μSv/h, and the decontamination factor showed a very high value (>1500).
Keywords: decontamination; nuclear facility; SP-HyBRID process; a contaminated RCP shaft; decontamination factor decontamination; nuclear facility; SP-HyBRID process; a contaminated RCP shaft; decontamination factor

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MDPI and ACS Style

Eun, H.-C.; Chang, N.-O.; Choi, W.-K.; Park, S.-Y.; Kim, S.-B.; Seo, B.-K.; Kim, K.-C.; An, S.-G. Decontamination of a Contaminated RCP Shaft Using the SP-HyBRID Process. Processes 2021, 9, 1725. https://doi.org/10.3390/pr9101725

AMA Style

Eun H-C, Chang N-O, Choi W-K, Park S-Y, Kim S-B, Seo B-K, Kim K-C, An S-G. Decontamination of a Contaminated RCP Shaft Using the SP-HyBRID Process. Processes. 2021; 9(10):1725. https://doi.org/10.3390/pr9101725

Chicago/Turabian Style

Eun, Hee-Chul, Na-On Chang, Wang-Kyu Choi, Sang-Yoon Park, Seon-Byeong Kim, Bum-Kyoung Seo, Ki-Chul Kim, and Seung-Geon An. 2021. "Decontamination of a Contaminated RCP Shaft Using the SP-HyBRID Process" Processes 9, no. 10: 1725. https://doi.org/10.3390/pr9101725

APA Style

Eun, H.-C., Chang, N.-O., Choi, W.-K., Park, S.-Y., Kim, S.-B., Seo, B.-K., Kim, K.-C., & An, S.-G. (2021). Decontamination of a Contaminated RCP Shaft Using the SP-HyBRID Process. Processes, 9(10), 1725. https://doi.org/10.3390/pr9101725

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