{"data":{"id":"us/10-cfr-830.203","jurisdiction":"us","citation":"10 CFR 830.203","heading":"Unreviewed safety question process.","body":"(a) The contractor responsible for a Hazard Category 1, 2, or 3 DOE nuclear facility must establish, implement, and take actions consistent with a DOE-approved USQ procedure that meets the requirements of this section.\n(b) The contractor responsible for a new Hazard Category 1, 2, or 3 DOE nuclear facility must submit for DOE approval a procedure for its USQ process on a schedule that allows DOE approval in a safety evaluation report issued pursuant to § 830. 207(a) of this part.\n(c) The contractor responsible for a Hazard Category 1, 2, or 3 DOE nuclear facility must implement the DOE-approved USQ procedure in situations where there is a:\n(1) Temporary or permanent change in the facility as described in the existing documented safety analysis;\n(2) Temporary or permanent change in the procedures as described in the existing documented safety analysis;\n(3) Test or experiment not described in the existing documented safety analysis; or\n(4) Potential inadequacy of the documented safety analysis because the analysis potentially may not be bounding or may be otherwise inadequate.\n(d) A contractor responsible for a Hazard Category 1, 2, or 3 DOE nuclear facility must obtain DOE approval prior to taking any action determined to involve a USQ.\n(e) The contractor responsible for a Hazard Category 1, 2, or 3 DOE nuclear facility must annually provide to DOE a summary of the USQ determinations performed since the prior submittal.\n(f) If a contractor responsible for a Hazard Category 1, 2, or 3 DOE nuclear facility discovers or is made aware of a potential inadequacy of the documented safety analysis, it must:\n(1) Take action, as appropriate, to place or maintain the facility in a safe condition until an evaluation of the safety of the situation is completed;\n(2) Notify DOE of the situation;\n(3) Perform a USQ determination and notify DOE promptly of the results; and\n(4) Submit the evaluation of the safety of the situation to DOE prior to removing any operational restrictions initiated to meet paragraph (f)(1) of this section.","path":["Title 10—Energy","CHAPTER III—DEPARTMENT OF ENERGY","PART 830—NUCLEAR SAFETY MANAGEMENT","Subpart B—Safety Basis Requirements"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-10.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:09Z","sha256":"43330aabef4c682e0f7f8137a59acd4a7c70571766932203b1d08fde9eb75cc2","source_id":"us-cfr","stale":true,"prev":"us/10-cfr-830.202","next":"us/10-cfr-830.204"},"notice":"GroundRules: Original legal text. Not legal advice."}