NNI

Question 1

What RCS temperatures provide inputs to the ICS System?

Answer 1

Tave
Delta Tcold
Thot

Question 2

The NNI input for RCS flow is supplied by RPS Channels:

Answer 2

A & B

Question 3

The NNI input for RCS pressure is supplied by RPS Channels:

Answer 3

A & C

Question 4

What temperature instruments are used for temperature compensation of the RCS flow signal to ICS?

Answer 4

Loop A and B Hot Leg Temps

Question 5

Power supplies to NNIX?

Answer 5

RS-1, Y-02

Question 6

Power supplies to NNIY?

Answer 6

RS-4, Y-01

Question 7

What parameters have signal selection by SASS?

Answer 7

RCS pressure (Does not go to ICS)
	RCS Tc
	RCS Th
	RCS flow
	OTSG pressure
	Header pressure
	Main Feedwater Flow
	Main Feedwater Temperature
	OTSG S/U level
	OTSG Operate Level
	Reactor Power

Question 8

Where does the NNI input for LO ERV Setpoint of 400psig?

Answer 8

ESAS Analog Ch 1

Question 9

Where does the NNI input for the CV-1050/CV-1410 pressure interlocks come from?

Answer 9

ES Analog Ch 1 + 2

Question 10

What parameters are on the Dasey Panel (9)?

Answer 10

TCOLD
Main Feedwater Flow
Wide Range RCS Pressure
OTSG Pressure
PZR Level
OTSG S/U Level
M/U Tank Level
Gamma Metrics Source Range (cps)
Intermediate Range (NI-4)

Question 11

What four things are affected by the selectable point for Pressurizer Level?

Answer 11

275” HiHi Alarm
55” Low Level Interlock
Pzr Level Control
Indication on Dasey Panel

Question 12

Which inputs are supplied to the ICCMDS sub-cooled margin indicators?

Answer 12

Core exit Thermocouples and wide range pressure (0-3000 psig)

Question 13

What RCS temp is required to start the 4th RCP?

Answer 13

465F