Control Interlocks Flashcards
1
Q
C’s
A
C-1 IR Rod Stop C-2 PR Rod Stop C-3 OT∆T Rod Stop and Runback C-4 OP∆T Rod Stop and Runback C-5 Low Power Interlock C-7 Loss of Load C-9 Condenser Interlock C-11 Control Bank D rod withdraw Limit C-20 AMSAC
2
Q
C-1
A
Interlock: IR Rod Stop Setpoint: Amps=20% Coincidence: 1 of 2 IR Interlock: Blocked when trip is block, bypassed when trip is bypadded. Function: Stops outward rod motion
3
Q
C-2
A
Interlock: PR Rod Stop Setpoint: 103% Coincidence: 1 of 4 PR Interlock: Can be bypassed Function: Stop outward rod motion
4
Q
C-3
A
Interlock: OT∆T Rod Stop and Runback Setpoint: OT∆T minus 2% Coincidence: 2 of 4 Interlock: Function: Stops outward motion and causes turbine runback
5
Q
C-4
A
Interlock: OP∆T Rod Stop and Runback Setpoint: OP∆T minus 2% Coincidence: 2 of 4 Interlock: Function:Stops outward motion and causes turbine runback
6
Q
C-5
A
Interlock: Low Power Interlock Setpoint: Pimp=15% Coincidence: Interlock: Selectable Function:
7
Q
C-7
A
Interlock: Loss of Load Interlock
Setpoint: Pimp 10% step change or 5%/min decrease
Coincidence:
Interlock: Manual Reset (PT-506 only)
Function: Arms steam dumps in Tavg mode after load rejection
8
Q
C-9
A
Interlock: Condenser Interlock Setpoint: Condenser Pressure < 6"Hg abs Coincidence: 2 of 2 per shell Interlock: Function: Condenser Steam dumps available
9
Q
C-11
A
Interlock: Control Bank D rod withdraw limit Setpoint: 223 Steps Coincidence: Interlock: Function:
10
Q
C-20
A
Interlock: AMSAC
Setpoint: Pimp>/= 40%
Coincidence: 2 of 2 (PT505 & PT506)
Function: Arms AMSAC
