EOP-FRCC-2 — Response to Degraded Core Cooling
Purpose
Provides operator actions to respond to degraded core cooling conditions. This is a Critical Safety Function Restoration Procedure (CSFRP) for Core Cooling — Purple path.
Entry Conditions
- Entered from EOP-CFST-1 when Core Cooling CSF status tree indicates PURPLE path
Key Actions / Information
Exam — 2018 Q71
Step 12 — AFW suction shift and SG feeding priority: with only the AFWST LO LEVEL alarm illuminated (not LO-LO), the crew is NOT required to shift AFW suction to an alternate source — the LO-LO alarm is required to switch to the alternate suction source. If NO INTACT SG is available, the crew can feed a RUPTURED SG or a FAULTED SG. Trap: EOP-FRHS-1 specifically forbids feeding a FAULTED SG if an INTACT or RUPTURED SG is available. EOP-FRCC-2 does NOT have this restriction — it allows feeding a FAULTED SG when no INTACT SG is available.
Connections
- Related systems: AFW, Steam Generator & Blowdown, ECCS
- Related EOPs: EOP-CFST-1 — Critical Safety Function Status Trees, EOP-FRCC-1 — Response to Inadequate Core Cooling
- Related exam questions: 2018 Q71
- Related exam: 2018 NRC Written Exam