Steam Dump System

Question 1

Functions of steam dumps

Answer 1

• Provide artificial load to allow gradual raising and lowering load
• permit plant to sustain a turbine trip and reactor trip from 100% power withoutr lifting safetys
• permit plant to sustain 50% load rejection. with 10% rods

Question 2

C9

Answer 2

• 1 Circ water pump breaker closed
• crid 2 energized
• 3 condensers greater than 20.6 inches vacuum

Question 3

P12

Answer 3

• 2/4 RCS loops Tave less than 541F
  
  • blocks dumps

Question 4

C8

Answer 4

• Turbine Trip
  
  • All High Pressure Turbine stop valves closed
  • 2/3 oil pressure switches less than or equal to 800 psig
  • closes group 1 and 2 contacts
  • opens group 3 contacts