AP-1 (RCS leak)

Question 1

AP-1

What conditions warrent a Rx trip and SI in RCS leakage AP?

Answer 1

• If Lpzr cannot be maintained
  
  • after start 2nd CCP
  • after isolate Letdown
• If Ppzr cannot be maintained
  
  • after all HTRS on
  • after Spray closed
  • after aux spray closed
  • after PORVs closed

Question 2

AP-1

What must you do if you have an RCS leak and VCT level cannot be maintained?

Answer 2

• swap charging suction to RWST
• commence load reduction and Rx s/d
  
  • (via L-4 or AP-25)

Question 3

AP-1

List 5 indications of an RCS leak?

Answer 3

• Lpzr lowering
• Ppzr lowering
• charging and letdown mismatch
• Lvct lowering
• RM-7, 2, 11, 12 …….raising