Abstract The successful decommissioning of nuclear facilities requires the derivation of DCGL in accordance with national site release criteria. MARSSIM, a widely used decommissioning guideline, recommends that a probabilistic analysis should be performed to derive the DCGL, which can be done by using the RESRAD code. Among the RESRAD codes, the RESRAD-OFFSITE code is the latest software edition and can derive exposure dose of receptor located both on and off-site. In this study, the preliminary exposure dose and DCGL were obtained by using the RESRAD-OFFSITE code and compared with the results obtained by the RESRAD-ONSITE code. As a result of the analysis, it was found that some radionuclides exhibited similar exposure doses and DCGL values, whereas a deviation is observed in a few cases. In this study, the applicability of the RESRAD-OFFSITE code to the decommissioning was investigated, and the similarities and differences with the RESRAD-ONSITE code were analyzed.

中文翻译：

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使用 RESRAD-OFFSITE 推导 Kori Unit 1 的初步 DCGL 并与 RESRAD-ONSITE 进行比较

摘要 核设施的成功退役需要根据国家场址释放标准推导出DCGL。MARSSIM 是一项广泛使用的退役指南，建议进行概率分析以推导出 DCGL，这可以通过使用 RESRAD 代码来完成。在RESRAD 代码中，RESRAD-OFFSITE 代码是最新的软件版本，可以导出位于现场和场外的受体的暴露剂量。在本研究中，初步暴露剂量和 DCGL 是通过使用 RESRAD-OFFSITE 代码获得的，并与由 RESRAD-ONSITE 代码获得的结果进行比较。作为分析的结果，发现一些放射性核素表现出相似的暴露剂量和 DCGL 值，而在少数情况下观察到了偏差。在这项研究中，