StacksVerified U.S. regulatory reference

40 CFR §197.14

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Reasonable expectation means that NRC is satisfied that compliance will be achieved based upon the full record before it. Characteristics of reasonable expectation include that it:
  1. (a)Requires less than absolute proof because absolute proof is impossible to attain for disposal due to the uncertainty of projecting long-term performance;
  2. (b)Accounts for the inherently greater uncertainties in making long-term projections of the performance of the Yucca Mountain disposal system;
  3. (c)Does not exclude important parameters from assessments and analyses simply because they are difficult to precisely quantify to a high degree of confidence; and
  4. (d)Focuses performance assessments and analyses upon the full range of defensible and reasonable parameter distributions rather than only upon extreme physical situations and parameter values.