---
kind: "section"
citation: "10 C.F.R. § 63.131"
title: "10"
number: "63.131"
heading: "General requirements."
url: "https://uscodex.org/cfr/10/63.131"
---

# §63.131. General requirements.

- (a) The performance confirmation program must provide data that indicate, where practicable, whether:
  - (1) Actual subsurface conditions encountered and changes in those conditions during construction and waste emplacement operations are within the limits assumed in the licensing review; and
  - (2) Natural and engineered systems and components required for repository operation, and that are designed or assumed to operate as barriers after permanent closure, are functioning as intended and anticipated.
- (b) The program must have been started during site characterization, and it will continue until permanent closure.
- (c) The program must include in situ monitoring, laboratory and field testing, and in situ experiments, as may be appropriate to provide the data required by [paragraph (a)](#a) of this section.
- (d) The program must be implemented so that:
  - (1) It does not adversely affect the ability of the geologic and engineered elements of the geologic repository to meet the performance objectives.
  - (2) It provides baseline information and analysis of that information on those parameters and natural processes pertaining to the geologic setting that may be changed by site characterization, construction, and operational activities.
  - (3) It monitors and analyzes changes from the baseline condition of parameters that could affect the performance of a geologic repository.

## Notes

### Authority

Authority: Atomic Energy Act of 1954, secs. 51, 53, 62, 63, 65, 81, 161, 182, 183, 223, 234 (42 U.S.C. 2071, 2073, 2092, 2093, 2095, 2111, 2201, 2232, 2233, 2273, 2282); Energy Reorganization Act of 1974, secs. 201, 202, 206, 211 (42 U.S.C. 5841, 5842, 5846, 5851); 42 U.S.C. 2021a; National Environmental Policy Act of 1969 (42 U.S.C. 4332); Nuclear Waste Policy Act of 1982, secs. 114, 117, 121 (42 U.S.C. 10134, 10137, 10141); 44 U.S.C. 3504 note.

### Source

Source: 66 FR 55792, Nov. 2, 2001, unless otherwise noted.