Abstract

A pyrochemical process has been introduced and utilized so that the transmutation of spent PWR fuel in PEACER can produce mainly low- and intermediate-level waste for near-surface disposal. Major radioactive nuclides from PEACER pyroprocessing are composed of transuranic element (TRU) and long-lived fission product (LLFP). In this study, the requirement for the final waste from PEACER is evaluated based on the methodology for establishment of waste acceptance criteria. Also, sensitivity analysis for several input parameters is conducted in order to determine acceptable decontamination factor (DF) and LLFP removal efficiency and to find out input parameter that extremely has an effect on DF. As a result of the study, LLFP removal efficiency, especially Sr-90 and Tc-99, is proved to be a major nuclide which contributes to annual dose by human intrusion scenario rather than TRU DF. To satisfy the acceptance criteria, DF for TRU and removal efficiency for LLFP have to be achieved more than 10 4 and 96%, respectively. Besides, because of the relative short half-life of Sr-90, the increasing of the institutional control period is recommended for the most important input parameter to determine DF.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.