Main Steam

Question 1

Steam Pressures:
Design
No-Load
Full-Load

Answer 1

Design: 1085 psig
No-Load: 1005 psig
Full- Load: 865 psig

Question 2

Steam Temperatures:
Design
No-Load
Full-Load

Answer 2

Design: 600°F
No-Load: 547°F
Full-Load: 524°F

Question 3

Steam Flow

Answer 3

~3.78 X (10 to the 6th) pph per S/G at Full Load with .10% moisture content

Question 4

Main Steam Supplies steam to what?

Answer 4

1) Main Turbine
2) TDAFWP
3) 6 MSR’s
4) Main Turbine Steam Seals
5) Extraction Steam
6) Safety Valves
7) ARV’s - Atmospheric Relief Vlvs

Question 5

S/G Flow Restrictors purpose

Answer 5

1) Limit flow rate and thrust during a steam line break (~8.3 X (10 to the 6th)) lbm/hr
2) Provides means to measure flow because they create a DP