Undisturbed Performance [Energy] Law and Legal Definition

According to 10 CFR 63.302 [Title 10 – Energy; Chapter I -- Nuclear Regulatory Commission; Part 63 – Disposal of High-Level Radioactive Wastes in a Geologic Repository at Yucca Mountain, Nevada; Subpart L -- Postclosure Public Health and Environmental Standards], the term undisturbed performance means that “human intrusion or the occurrence of unlikely natural features, events, and processes do not disturb the disposal system.”