{"data":{"id":"us/40-cfr-197.14","jurisdiction":"us","citation":"40 CFR 197.14","heading":"What is a reasonable expectation?","body":"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:\n(a) Requires less than absolute proof because absolute proof is impossible to attain for disposal due to the uncertainty of projecting long-term performance;\n(b) Accounts for the inherently greater uncertainties in making long-term projections of the performance of the Yucca Mountain disposal system;\n(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\n(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.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER F—RADIATION PROTECTION PROGRAMS","PART 197—PUBLIC HEALTH AND ENVIRONMENTAL RADIATION PROTECTION STANDARDS FOR YUCCA MOUNTAIN, NEVADA","Subpart B—Public Health and Environmental Standards for Disposal"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"06ba42f1406d7d332136316d73838b8b9e5668c5317eb3513f96d5eb117eeb85","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-197.13","next":"us/40-cfr-197.15"},"notice":"GroundRules: Original legal text. Not legal advice."}