- 547 °F - 578 °F
- 0 - 100% power
- 24.7% - 60%
- 547 °F - 578.2 °F
- Tavg [Auct. Hi Tavg]
- 0 - 20% total steam flow
- 20 - 100% total steam flow
- 0 - 20% Turbine Load
- 20 - 100% Turbine Load
- 0 - 628 psia
- 0 - 100% power
- 1.5 °F → 3.0 °F error
- 3 °F → 5 °F error
- 48 spm control rods
- 64 spm shutdown rods
- Steam Dump Bypass Interlock Switches (M-4) in OFF
- Condenser not available (absence of C-9)
- Lo-Lo Tavg (P-12) locks out all steam dumps
- interlock can be bypassed for 3 cooldown valves using the two bypass interlock switches on M-4.
- Load Rejection
- 10% load decrease in a 2 minute time constant
- as sensed by PT-1-72 (C-7)
- Reactor Trip
- P-4 from "A" Tr. Rx Trip Breakers
- "B" Tr. P-4 places Rx Trip Controller I/S
- Mode Selector Switch (M-4)
- Load Reject
- Tave - Tref (PT-1-73)
- 2 °F → 18 °F = 0 → 100% open
- Trip Open - ½ @ 10 °F; ½ @ 18 °F
- Reactor Trip
- Tave - 552 °F (Fixed Reference Signal)
- 0 °F → 50 °F = 0 → 100% open
- Trip Open - ½ @ 25 °F; ½ @ 50 °F
- Auto
- steam pressure - setpoint
- Manual
- PORV Opens
- 2/2 signals > 2335
- +100
- PORV recloses after actuation
- Spray Valve FULL OPEN
- +75
- Spray Valve starts to open
- +25
- Backup Heater Banks A & B OFF
- Low Pressure Safety Injection
- 2335 psig
- 2/2 signals > 2335
- +100
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