Power Distribution

Question 1

What are the parameters that you must stay in for AFD (doghouse limits) per COLR?

What are the Admin limits?

Answer 1

100% -10, +10

50% -26, +25

target +5, -5

Question 2

What are the conditions that have a significant effect on AFD (delta I)?

Answer 2

• Rod position
• Power level
• Core burnup
• Xenon level

Question 3

How do you calculate the quadrant power tilt ratio (QPTR)?

Answer 3

take the highest from:

upper quad tilt = highest upper detector/ upper det avg

and

lower quad tilt = highest lower detector/ lower det avg

Whichever tilt is highest is your QPTR

Question 4

Power Distribution

What instrumentation feeds into and when working make PDMS (power distribution Monitoring system) operable?

Answer 4

• Control bank position
• Cold leg temp (T_c)
• Rx power level
• NI PR
• CET