AP-11 (CCW malf)

Question 1

AP-11

What are the different sections to CCW malfuntions?

Answer 1

A - loss of CCW pump/ hi temp

B - CCW in leakage

C - CCW out leakage

D - loss of flow to letdown hx

E - loss of flow to RCP’s

F - loss of surge tank

Question 2

AP-11

What are the various Rx trip criteria in CCW malf:

A: loss CCW pump/hi temp

B: CCW in leakage

Answer 2

A

• no CCW pump available AND
  
  • no ASW pump available AND
  • CCW temp > 120 deg F

B

• loose seal inj & CCW to RCPs
• T _{Radial Brng} > 225 deg F AND
  
  • T _{seal out} > 235 deg F

C

• CCW surge tank level out of site low

E

• CCW flow to RCP lube oil coolers lost for 5 min