RP-AA-203 — Exposure Control and Authorization
DRAFT — Reconstructed from exam materials
Purpose
Administrative procedure for controlling and authorizing personnel radiation exposure. Establishes administrative dose control limits (ADCL) and the authorization process for work that may approach or exceed these limits.
Key Actions / Information
- Administrative Dose Control Limit (ADCL): 2000 mrem TEDE per year
- Personnel approaching the ADCL require specific management authorization before continuing radiation work.
- Dose calculations must include ALL contributors: gamma, neutron, and internal (if applicable).
- Authorization levels are tiered based on projected total dose relative to the ADCL.
JPM — 2022 SRO-A4
Operator A at 1992 mrem year-to-date TEDE plus 9 mrem from containment entry = 2001 mrem — exceeds the 2000 mrem ADCL by 1 mrem. Operator B at 1496 mrem + 9 mrem = 1505 mrem — remains below ADCL. The SRO must recognize that Operator A cannot perform the containment entry without additional dose authorization.
Exam — 2019 Q45
Normal administrative dose control limit is 2000 mrem TEDE per year. During a Site Area Emergency, the ADCL is automatically raised to 4500 mrem per NC.EP-EP.ZZ-0304. Stay time calculation: (4500 - current TEDE) / dose rate. Example: 1000 mrem received + 1000 mrem/hr area = (4500 - 1000) / 1000 = 3.5 hours = 210 minutes. Trap: 60 minutes uses the normal 2000 mrem limit (incorrect during emergency); 180 minutes uses 4000 mrem (wrong limit); 240 minutes uses 5000 mrem (10CFR20 limit, not ADCL).
Connections
- Related procedures: RP-SA-102 — Containment Entries at Power, RP-AA-300 — Radiological Survey Program, RP-AA-460 — Controls for High and Very High Radiation Areas, RP-AA-4000 — Personnel Conduct in Radiologically Controlled Areas
- Related exam questions: 2019 Q45
- Related JPMs: 2022 JPM SRO-A4
- Related exam: 2019 NRC Written Exam, 2022 NRC Operating Exam