A study on the removal of impurities in a SP-HyBRID decontamination wastewater of the primary coolant system in a pressurized water reactor

Jung, Jun-Young; Eun, Hee-Chul; Park, S. Y.; Park, J. S.; Chang, Na-On; Kim, S. B.; Seo, Bum-Kyoung; Park, S. J.

doi:10.1007/s10967-018-6219-0

Cited by 10 publications

(3 citation statements)

References 7 publications

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“…H 2 SO 4 and KMnO 4 are used as decontamination reagents in the oxidative process, and the chemical reagents used in the HyBRID process are N 2 H 4 , H 2 SO 4 , and CuSO 4 . Cr-rich oxides are dissolved in the oxidative process, and Fe-rich oxides are dissolved in the reductive process [12,14]. In the SP-HyBRID process, the wastewater is purified by a precipitation method using Ba(OH) 2 , and a filtration method.…”

Section: Introductionmentioning

confidence: 99%

“…In the SP-HyBRID process, the wastewater is purified by a precipitation method using Ba(OH) 2 , and a filtration method. Finally, BaSO 4 waste containing metal hydroxides is generated, and the use of ion exchange resin is very minor [14,15]. For this reason, the SP-HyBRID process thus can significantly reduce the secondary waste generation when compared with the HP CORD UV process.…”

Section: Introductionmentioning

confidence: 99%

“…Processes 2021, 9, x FOR PEER REVIEW 2 of 11 and Fe-rich oxides are dissolved in the reductive process [12,14]. In the SP-HyBRID process, the wastewater is purified by a precipitation method using Ba(OH)2, and a filtration method.…”

Section: Introductionmentioning

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: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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Nuclear Decommissioning and Sustainable Environment: Insights on Decontamination Processes

Ngulimi,

Kim,

Asghar

et al. 2024

Adv Energy and Sustain Res

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Nuclear energy accounts for ≈10% of global energy production, positioning it as a promising solution for achieving carbon neutrality amid escalating concerns over climate change. Nonetheless, the effective management of radioactive waste, which can remain hazardous for up to one hundred thousand years, presents considerable challenges that must be addressed to uphold public trust and safeguard environmental safety. This review outlines the fundamental stages of nuclear decommissioning including strategic planning, decontamination, dismantling, remediation, encapsulation, deregulation, and site reuse as a critical component of sustainable environmental practices. The review also highlights the significance of efficient decontamination processes in reducing waste generation. Various decontamination techniques, including mechanical, electromechanical, chemical, and advanced methods such as laser and plasma decontamination, are evaluated for their effectiveness and limitations. Moreover, the review emphasizes the need to enhance the recovery and recycling of ion exchange resin and potential radionuclides during decontamination processes to minimize waste and to address the depletion of potential radionuclide resources. Future research should prioritize the development of innovative techniques for decontamination and radioactive waste management, fostering sustainable decommissioning and supporting the ongoing development of nuclear energy in an environmentally responsible manner.

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