Aux Steam

Question 1

What components make up the aux steam receiver package?

Answer 1

a receiver, vent condenser, and two aux steam condensate receiver transfer pumps

Question 2

What supplies cooling to the vent condenser?

Answer 2

NC

Question 3

Where does the discharge of the aux steam condensate receiver transfer pumps go?

Answer 3

either to the LRS low TDS holdup tank if radiation is detected or to the condenser

Question 4

What are the pressures of the 3 reducing stations in the aux steam system?

Answer 4

1150 psig to 250 psig
250 psig to 50 psig
250 psig to 52.3 psig

Question 5

which RU monitor detects radiation in the aux steam condensate?

Answer 5

RU-7

Question 6

How do ASN-RV-11A/11B fail on a loss of IA?

Answer 6

11A fails closed, 11B fails open (all flow to the LRS)

Question 7

What happens to PV-331 & 332 on a pressure of 1 psig in the aux building, CST pipe tunnel, or HUT tunnel?

Answer 7

the valves will trip shut . When the overpressure situation has been corrected, the valves must be manually reset.

Trash can valves

Question 8

What are the modes of operation of the condensate receiver transfer pumps?

Answer 8

stop/start/auto.

auto will alternate the lead pump on high level in the receiver tank

Question 9

What are the loads off the 50 psig regulator in the aux steam system?

Answer 9

gas stripper, BAC, and LRS evaporator

Question 10

What are the loads off the 250 psig regulator in the aux steam system?

Answer 10

the two smaller regulators/reducers
MFWP turbines for o/s testing 
heater 4 for startup fw heating
gland sealing steam
AFP turbine for o/s testing
blow down stack
cross tie header