IRPI

Question 1

IRPI power supply for rod bottom B/S, bypass B/S, and racks and modules

Answer 1

PP-61 circuit 1
(480V Bus 5 feeds MCC-15 which feeds PP-61)

Question 2

IRPI RTGB LED’s power supply

Answer 2

IB-7A circuit 10

Question 3

IF you loos IB-7A what happens?

Answer 3

RTGB IRPI LED’s extinguish, but Rod Bottom bistable lights will still illuminate if rod drops

Question 4

If you loose PP-61 what happens?

Answer 4

LED indicators on RTGB will default to “0” steps/inches, GREEN indications.
Rod bottom mistable light will not illuminate

Question 5

LCO 3.1.4 Rod Group ALignment LImits

Rod Alignment Requirments for ITS
(For bank demand positions >=200 steps)

Answer 5

Each rod shall be within 15inches of its bank demand position

Question 6

LCO 3.1.4 Rod Group Alignment limits

Rod Alightment requirements
(For bank demand postions <200 steps)

Answer 6

Each rod shall be within 7.5 inches of the average of the individual rod positions in the bank

Question 7

A dropped Rod is still operable

Answer 7

A stuck rod is not operable

Question 8

LCO 3.1.4 Rod Group Alignment LImits

For condition A
(One or more rods inoperable)

Answer 8

1. Verify SDM within limits in the COLR (1 hour) or
2. Initate boration to restore SDM within limits (1 hour) and
3. Be in MODE 3 (6 hours)

Question 9

3.1.4 Rod Group Alignment limits

For condition B
(One rod not within alignmnet limits)

Answer 9

1. Restore rod to alignment (1 hour) OR
2. Verify SDM within limits in COLR (1 hour) OR
3. 3Initate boration to restore SDM to within limits (1 hour)

Question 10

How many steps on RTGB for step counters

Answer 10

0-250 steps

Question 11

Each step is how many inches

Answer 11

5/8”

Question 12

Rod Bottom Bypass Bistables allows you to do what?

Answer 12

Allows you to operate below 35 steps without giving Rod Bottom alarm (20 steps)