# Criticality Accident Requirements
> **Nuclear Regulatory Commission** · Direct final rule with opportunity to comment. · Published 1997-12-03 · Effective 1998-02-17 · 62 FR 63825
## Document
- **Document number:** 97-31733
- **Category:** other
- **Sub-agency:** Nuclear Regulatory Commission
- **Federal Register citation:** 62 FR 63825
- **CFR reference:** 10 CFR 50
- **Publication date:** 1997-12-03
- **Effective date:** 1998-02-17
## Abstract

The Nuclear Regulatory Commission (NRC) is amending its regulations to provide light-water nuclear power reactor licensees with greater flexibility in meeting the requirement that licensees authorized to possess more than a small amount of special nuclear material (SNM) maintain a criticality monitoring system in each area where the material is handled, used, or stored. This action is taken as a result of the experience gained in processing and evaluating a number of exemption requests from power reactor licensees and NRC's safety assessments in response to these requests that concluded that the likelihood of criticality was negligible.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/12/03/97-31733/criticality-accident-requirements)
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