A Study on the Applicability for Primary System Decontamination through Analysis on NPP Decommission Technology and International Experience

Song, Jong Soon; Jung, Min Young; Lee, Sang‐Heon

doi:10.7733/jnfcwt.2016.14.1.45

Cited by 6 publications

(2 citation statements)

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“…As seen in Figure 10, photos of the RCP shaf head after each cycle showed similar trends to the decontamination results. The DF wa calculated using Equation (2), and it showed a very high value (>1500) [11,19,20]. DF = Initial dose rate/Final dose rate (2…”

Section: Decontamination Of the Contaminated Rcp Shaft Headmentioning

confidence: 99%

“…As seen in Figure 10, photos of the RCP shaft head after each cycle showed similar trends to the decontamination results. The DF was calculated using Equation (2), and it showed a very high value (>1500) [11,19,20]. After completing the filter cleaning, the concentrations of radioactive nuclides in the decontamination wastewater were analyzed using HPGe detector, and the results are provided in Table 3.…”

Section: Decontamination Of the Contaminated Rcp Shaft Headmentioning

confidence: 99%

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

et al. 2021

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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).

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Section: Decontamination Of the Contaminated Rcp Shaft Headmentioning

confidence: 99%

Section: Decontamination Of the Contaminated Rcp Shaft Headmentioning

confidence: 99%