SALEM
SALEM STUDY SYSTEM
EOPs > EOP-FRCE-3 — Response to High Containment Radiation Levels

EOP-FRCE-3 — Response to High Containment Radiation Levels

⚠️ DRAFT

EOP-FRCE-3 — Response to High Containment Radiation Levels

Purpose

Provides operator actions for responding to high radiation levels inside containment, including reconfiguration of containment fan coil units for filtration.

Key Actions / Information

Exam — 2023 Q25
Step 2 — place all CFCUs in LOW speed. In LOW speed, dampers realign airflow through HEPA filters (bypassing roughing filters) to reduce airborne radioactivity inside containment.
Exam -- 2023 Q99
CFST containment environment monitoring: the R44A/B (high range containment radiation monitors) are used in EOP-CFST-1 to determine entry into EOP-FRCE-3 when radiation exceeds 2 R/HR. FRCE-3 is a yellow path procedure -- entry is optional (CRS may elect to GO TO). Trap: R10A/B are also inside containment but are NOT the monitors used in the CFSTs for this purpose. Red/orange paths require mandatory entry; yellow paths are at the CRS's discretion.
Exam — 2020 Q26
Adverse containment conditions exist when R44A/B containment high range monitors read > 1E05 R/HR. This affects SMM operation — the SMM switches to ADVERSE mode. When radiation levels subsequently lower below the adverse threshold, the SMM does NOT automatically reset — manual action is required. Containment pressure auto-resets at < 3 psig, but radiation does not.
Exam — 2018 Q75
Step 2 — CFCUs operated in LOW speed during FRCE-3. At 7E2 R/HR, containment radiation is less than 1E05 R/HR, so containment is considered NORMAL (not ADVERSE). The adverse containment radiation threshold is 1E05 R/HR. Trap: R44A/B being in alarm does NOT mean containment is ADVERSE. The alarm actuates at a much lower setpoint than the 1E05 R/HR adverse threshold. Running CFCUs in HIGH speed does not better mitigate the condition — LOW speed realigns dampers through HEPA filters for filtration.
Exam — 2018 Q85
EOP-FRCE-3 entry conditions per EOP-CFST-1: R44A/B radiation ≥ 2 R/HR. 100 R/HR is the R44A/B WARNING setpoint — NOT the FRCE-3 entry threshold. Entry is at ≥ 2 R/HR, which is much lower than the warning setpoint. FRCE-3 is a YELLOW path procedure — it is NOT required to be performed. Per OP-AA-101-111-1003, yellow path functional restoration procedures are at the CRS's discretion.

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