Unacceptable Damage Law and Legal Definition
According to 10 CFR 712.3 [Title 10 Energy; Chapter III Department of Energy; Part 712 Human Reliability Program; Subpart A Establishment of and Procedures for the Human Reliability Program; General Provisions], unacceptable damage means “an incident that could result in a nuclear detonation; high-explosive detonation or deflagration from a nuclear explosive; the diversion, misuse, or removal of Category I special nuclear material; or an interruption of nuclear explosive operations with a significant impact on national security.”