Aux Steam System (ASS)

Question 1

What happens on a loss of HVH to the RB?

Answer 1

Goes positive.

Question 2

What happens to MOV16 on a CSR Hi-Hi?

Answer 2

closes (mov3 opens)

Question 3

What happens to MOV3 on a CSR low level

Answer 3

closes (mov16 opens)

Question 4

What systems supply Aux Steam?

Answer 4

Main Steam, Extraction Steam, Aux Boiler.

Question 5

What systems can Aux Steam supply?

Answer 5

SJAEs, Offgas Preheaters, CSRs, Building Heating Aux HX, Building Heating Intermediate HXs

Question 6

What systems can Extraction Steam supply?

Answer 6

CSRs, Building Heating Intermediate HX.

Question 7

What systems can the Aux Boilers supply?

Answer 7

SJAEs, Offgas Preheaters, Building Heating Aux HXs.

Question 8

What are the Aux Steam reducer setpoints for its supply systems?

Answer 8

SJAE: 128#
HVH: 110#
Offgas Preheaters: 96#
CSRs: 95#
Steam Seals: 7#

Question 9

What is the Conductivity Limit for the Aux Boilers?

Answer 9

2100 umhos/cm

Question 10

What can trip the Aux Boiler Feed Pump?

Answer 10

1. Deaerator Low Level
2. Low pump discharge pressure (<125psig, 10sec)
3. Motor Overload

Question 11

Why are chemicals added to the Aux Boilers?

Answer 11

To raise pH