Demin Water - 1.0

Question 1

Transfer Pump Auto Stop:*

Answer 1

System Flow < 50 gpm and
Jockey Pump Running

*Only if pump was started automatically.

Question 2

If a pump is manually started, it will automatically stop on the following conditions:

Answer 2

System flow < 250 gpm (FSL-3046)
and
Three position switch in the A/B position.

Question 3

When do all 3 pumps trip?

Answer 3

All four DWSTs drop below 19%.

Question 4

When does the demin water Transfer Pump Auto Start:*

Answer 4

Low Demin Water Header Pressure (100#)

*To start automatically on system demand, the following switches must be aligned as follows:
• Pump selector switch must be selected to either that pump or in the A/B position.
• Pump control switch in automatic.

Question 5

List Major Demin Components.

Answer 5

1. 4 Storage Tanks – 50,000 gal(each)
2. 1 Jockey Pump – 50 gpm
   * Normally runs to maintain system full and pressurized (~125#)
3. 2 Transfer Pumps – 200 gpm (normally both in auto (AB pos))

Question 6

Flow path from trucks.

Answer 6

Return from the trucks goes through the mixed bed demins to remove trace impurities before getting sent to the DWSTs.