10 CFR 53.250
§ 53.250 Defense in depth.
United States · 10 CFR — Energy · Status: effective
Cite this
- Citation
- 10 CFR 53.250, § 53.250 Defense in depth, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/37575
- Permanent ID
ys:prov:37575@1- SHA-256
bea3715f2f73e060038e10ed436bf44fbffb6bb592c9f47406ca79951285a528
The hash is SHA-256 of this version's text, with every run of whitespace collapsed to a single space and the ends trimmed. The ID always leads back here, and checking it says whether the text you cited is still the current version.
Full text
(a) Measures must be taken for each commercial nuclear plant to ensure appropriate defense in depth is provided to compensate for uncertainties in the analysis of the safety criteria such that there is reasonable assurance that the safety criteria in this subpart are met over the life of the plant.
(b) The uncertainties that must be addressed under paragraph (a) of this section include those related to the state of knowledge and modeling capabilities, the ability of barriers to limit the release of radioactive materials from the facility during LBEs other than DBAs, the reliability and performance of plant SSCs and personnel, and the effectiveness of programmatic controls.
(c) The safety analysis may not exclusively rely upon a single engineered design feature, human action, or programmatic control, no matter how robust, to address the range of LBEs other than DBAs.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.