---
kind: "section"
citation: "10 C.F.R. § 63.46"
title: "10"
number: "63.46"
heading: "Particular activities requiring license amendment."
url: "https://uscodex.org/cfr/10/63.46"
---

# §63.46. Particular activities requiring license amendment.

- (a) Unless expressly authorized in the license, a license amendment is required for any of the following activities:
  - (1) Any action that would make emplaced high-level radioactive waste irretrievable or that would substantially increase the difficulty of retrieving the emplaced waste;
  - (2) Dismantling of structures;
  - (3) Removal or reduction of controls applied to restrict access to or avoid disturbance of the site and to areas outside the site where conditions may affect compliance with §§ [63.111](/cfr/10/63.111.md) and [63.113](/cfr/10/63.113.md);
  - (4) Destruction or disposal of records required to be maintained under the provisions of this part;
  - (5) Any substantial change to the design or operating procedures from that specified in the license, except as authorized in [§ 63.44](/cfr/10/63.44.md); and
  - (6) **Permanent closure.**
- (b) An application for an amendment must be filed, and will be reviewed, as specified in [§ 63.45](/cfr/10/63.45.md).

## 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.