U.s. Nuclear Regulatory Commission

Preliminary Performance-baes Analysis Relevant to Dose-based Performance Measures for a Proposed Geologic Repository at Yucca Mountain U.s. Nuclear Regulatory Commission

The National Academy of Sciences' Committee on Technical Bases for Yucca Mountain Standards recommended that standards for the disposal of high-level radioactive waste at Yucca Mountain should 1. set a limit on the risk of individuals, 2. use the critical group approach, as defined by the international Commission on Radiological Protection; 3. define the critical group using present knowledge and cautious, reasonable assumptions; 4. use a time period for conducting compliance assessment that includes the period of greatest risk; and 5. use a stylized calculation to assess whether the repository's performance would be substantially degraded as a consequence of a postulated intrusion.