As part of the preparation of a glossary of terminologies related to the disposal of spent nuclear fuel, definitions of potentially issuable terminologies used in domestic regulations were inferred from relevant regulations or comparatively analyzed with foreign definitions. These terminologies are safety assessment and performance assessment, safety function and safety performance, disposal containers and package, isolation and containment, and so on. Their concise and easy-to-understand definitions have been proposed in order to obtain these opinions of stakeholders.

• Kwan Sik Chun(Korea Environment Testing & Analysis Laboratory (KETA)) Corresponding author
• Sang Hoon Park(Korea Environment Testing & Analysis Laboratory (KETA))
• Kyong Won Han(Korea Environment Testing & Analysis Laboratory (KETA))