---
kind: "section"
citation: "40 C.F.R. § 197.14"
title: "40"
number: "197.14"
heading: "What is a reasonable expectation?"
url: "https://uscodex.org/cfr/40/197.14"
---

# §197.14. What is a reasonable expectation?


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:

- (a) Requires less than absolute proof because absolute proof is impossible to attain for disposal due to the uncertainty of projecting long-term performance;
- (b) Accounts for the inherently greater uncertainties in making long-term projections of the performance of the Yucca Mountain disposal system;
- (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
- (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.

## Notes

### Authority

Authority: Sec. 801, Pub. L. 102-486, 106 Stat. 2921, 42 U.S.C. 10141 n.

### Source

Source: 66 FR 32132, June 13, 2001, unless otherwise noted.