StudyWeb | TI-28 Att.9 | Control Permissives

TI-28 Att.9 - Control Permissives

C-1

IR High Flux Rod Stop
> 20%
1/2
Block Auto and Manual Rod Withdrawal

C-2

PR High Flux Rod Stop
> 103%
1/4
Block Auto and Manual Rod Withdrawal

C-3

OT ΔT Rod Stop & Turbine Runback
3% below Trip Setpoint
2/4
Block Auto and Manual Rod Withdrawal & Runback Turbine

C-4

OP ΔT Rod Stop & Turbine Runback
1% below Trip Setpoint
2/4
Block Auto and Manual Rod Withdrawal & Runback Turbine

C-5

Auto Rod Stop
PT-1-73 < 15%
1/1
Block Auto Rod Withdrawal

C-7

Load Rejection
PT-1-72 senses a load decrease > 10% in a 2 minute time constant
1/1
Arm Steam Dumps in the T_ave Mode

C-9

Condenser Available
Condenser Press < 3.5 psia and CCWP Bkr Racked In & Closed
2/2 press & 1/3 Bkr
Enable Steam Dumps

Control Bank D Rod Stop
220 Steps
1/1
Block Auto Rod Withdrawal

AMSAC Interlock
> 40% Rx Power Equivalent
2/2 PT's
Arms ATWS mitigation system actuation circuit