AOP-7 "Rapid Power Reduction"

Question 1

AOP-7 entry conditions

Answer 1

• Use of AOP-7 is directed by another AOP

- CRS determines that abnormal plant conditions requires immediate power reduction at a rate > 30%/hour and < 300%/hour

Question 2

AOP-7 automatic actions

Answer 2

NONE

Question 3

AOP-7 reactor trip criteria

Answer 3

• Either S/G level < 30%
• Either S/G level > 95%
• PZR level < 30%
• PZR level > 62.8%
• Tave < 525 F
• Rack C, EK-0605 “TM/LO Pressure Channel Pre-Trip”
• Rack B, EK-0608 “Hi Pressurizer Pressure Channel Pre-Trip”
• More than 1 control rod misaligned (8” deviation) after attempted realignment
• Plant cannot be stabilized following termination of power reduction

Question 4

AOP-7 turbine trip criteria

Answer 4

NONE

Question 5

AOP-7 immediate actions

Answer 5

NONE