(a) Functional design criteria must be defined for each design feature classified as SR or non-safety-related but safety-significant (NSRSS) in terms of its role in demonstrating compliance with—
(1) The safety criteria in § 53.220; and
(2) The evaluation criteria in § 53.450(e).
(b) The identification of special treatments associated with the design of SR and NSRSS SSCs must consider human actions and programmatic controls identified and implemented in accordance with this and other subparts to achieve and maintain the reliability and capability of SSCs relied upon to satisfy—
(1) The safety criteria in § 53.220; and
(2) The evaluation criteria in § 53.450(e).
authority: Atomic Energy Act of 1954, secs. 11, 101, 103, 108, 122, 147, 161, 181, 182, 183, 184, 185, 186, 187, 189, 223, 234 (
42 U.S.C. 2014,
2131,
2132,
2133,
2134,
2135,
2138,
2152,
2167,
2169,
2201,
2231,
2232,
2233,
2234,
2235,
2236,
2237,
2239,
2273,
2282; Energy Reorganization Act of 1974, secs. 201, 202, 206, 211 (
42 U.S.C. 5841,
5842,
5846,
5851; Nuclear Waste Policy Act of 1982, sec. 306 (
42 U.S.C. 10226); National Environmental Policy Act of 1969 (
42 U.S.C. 4332);
44 U.S.C. 3504 note; Pub. L. 115-439, 132 Stat. 5571
source: 91 FR 15794, Mar. 30, 2026, unless otherwise noted.
cite as: 10 CFR 53.420