AP-30 (Mn. Gen Malf)

Question 1

AP-30 (Mn Gen Malf)

Per FOP what is the Unit trip criteria?

Answer 1

Bottom or Top stator coil delta T > 21 F

individual stator T/C > 193 F

GCM alarm w/

• stator temp alarm
• exciter ground alarm
• turb gen vib
• RF alarm

RF alarm w/

• stator temp alarm
• exciter ground alarm
• turb gen vib or rise in temp
• GCM alarm

Generator voltage unstable and cannot be controlled

Seal oil cooler outlet temp > 125 deg F for 15 min

Gen H₂ pressure lowering uncontrollably

Gen liquid level high and Defoaming tnk level high

H₂ / seal oil DP not kept > 3 psig

Question 2

(AP-30 Mn Gen Malf)

What are the sections to AP-30?

Answer 2

A - Generator Condition Monitor

B - Exciter Ground

C - Exciter Trouble

D - Generator Trouble

E - Generator Seal Oil Trouble

F - Generator H2 system Trouble

G - Stator wtr cooling system Trouble