MSRs

Question 1

Where does the U1 Moisture Separator Drains go?

Answer 1

5 FW Heaters

Question 2

Where does the U2 Moisture Separator Drains go?

Answer 2

4 FW Heaters

Question 3

What is the purpose of the MSRs?

Answer 3

• Mechanically removes moisture from the HP Turbine exhaust
• Reheats dried steam almost to initial live steam temperature by passing it thru a bundle of heating tubes
• Minimizes erosion of LPT components as well as the momentum losses due to excessive moisture
• Designed to remove > 98% moisture in cold reheat steam

Question 4

Where do the U2 RHCDTs drain to during loaded operations for both units?

Answer 4

6 FW Heaters

Question 5

How do the Reheater MRV and MMO Steam Supply valves respond on a turbine trip for both units?

Answer 5

All steam supplies to MSRs Auto Close on a Turbine Trip

Question 6

How do DRV-450/460, Downstream Steam Supply Drains respond on a turbine trip?

Answer 6

Auto Open

Question 7

U1 HMOs (U1 MSDT Drains to the 5 Heaters and RCDT Drains to 6 heaters) close on what in the associated FW Heater

Answer 7

high high level

Question 8

What is the alternate drain path for the Moisture Separator Drain Tanks?

Answer 8

Main Condenser Drip Receivers

Question 9

What happens on a Hi level in RCDT or MSDT

Answer 9

auto opens bypass valve to condenser (used during start up also)

Question 10

What happens on a High High Level in the Moisture Separator Drain Tank?

Answer 10

IF you can’t clear it, TRIP
- Reactor if above P8
- Turbine if below P8