LOT 202.24 CL-ACW

Question 1

• LOT 202.24 CL-ACW*
• • *

Where are the CL-ACW components physically located?

Answer 1

• 29’ TGB:*
• *Pumps (3)**
• SW Corner*
• *SW/FW HX (2)**
• SW Corner*
• *IA Emergency Pump**
• N of CARS pumps*

• 55’ TGB:*
• *Chem Add Tank**
• SW Corner*

• 83’ TGB:*
• *Surge Tank**
• SW Corner*

Question 2

• LOT 202.24 CL-ACW*
• • *

What provides makeup to the CL-ACW Surge Tank?

Answer 2

Demin Water

• Auto makeup at < 50%
• • *

Note:
N₂ blanket (5 psig)

Question 3

• LOT 202.24 CL-ACW*
• • *

What cools CL-ACW?

Answer 3

OL-ACW

HXs are 60% capacity

Question 4

• LOT 202.24 CL-ACW*
• • *

What chemical do we add to the CL-ACW system?

Answer 4

NALCO SureCool

Question 5

• LOT 202.24 CL-ACW*
• • *

What will auto start/trip the CL-ACW pumps?

Answer 5

Auto Starts:
Discharge Header Pressure - Low (60 psig)
Trip of running pump

• Trips:*
• *Ground Fault**

Overcurrent

Undervoltage

Controlled from CP009/Local

Note:
SW/FW HX Common discharge pressure on CP009 NOT pump discharge pressure.

Question 6

• LOT 202.24 CL-ACW*
• • *

What does CL-ACW cool?

Answer 6

Turbine:
EHC (120 ˚F)*
Air Side Seal Oil (105 ˚F)*
H₂ Side Seal Oil (105 ˚F)*
Exciter Coolers (113 ˚F)*
Isophase
Stator Cooling Water (105 ˚F)*

Feed / Condensate:
Condensate Pump Bearings
Feed Booster Pump Bearings / Lube Oil
SUFW Seals / Lube Oil*
TCV closes at low temps

Misc:
IA Compressors (11/12/13)
After Cooler / Lube Oil
Secondary Sampling
MSDT pumps Seal Water
CARS

Note:
Coolers have automatic TCVs