Pressurizer Pressure Control

Question 1

What is the power supply for the Pressurizer Pressure control Master Controller (RCN-PIC-100)?

Answer 1

NNN-D12

Question 2

What is the low level cut-out bistable setpoint?

Answer 2

25% level in the pressurizer in either (when selected to both) level transmitter
(reset at 27%)

Question 3

What are the power supplies for the Class Backup heaters?

Answer 3

PGA/PGB

Question 4

What are the power supplies for pressure transmitters PT-100X and PT-100Y?

Answer 4

PT-100X = NNN-D12

PT-100Y = NNN-D11

Question 5

At what pressure will the Hi Pressurizer pressure alarm disable all heaters?

Answer 5

2285 psia
(reset at 2275 psia)

Question 6

Describe the actions as output of the Pressurizer Pressure Master controller goes up.

Answer 6

Question 7

Which Pressurizer heater trip on a SIAS?

1) Proportional
2) Class Back-up
3) Non-class Back-up

A) 1 and 3
B) 2 and 3
C) 1 ONLY
D) 2 ONLY

Answer 7

D) 2 ONLY

Question 8

How long does the operator have to wait before re-initiating Setpoint Override?

Answer 8

• Take HS to OFF then to ON.
  o White OVERRIDE light illuminates.
  o After a 10 second time delay, the override can be canceled by taking the HS to OFF.
  o 10 seconds must then elapse before the override can be re-initiated.