LOT 202.23 OL-ACW

Question 1

• LOT 202.23 OL-ACW*
• • *

What does OL-ACW cool?

Answer 1

Main Turbine Lube Oil (2)

SGFPT Lube Oil (6)

Generator H₂ (1)

CL-ACW (2)

RCB Chillers (3)

MAB Chillers (4)

Question 2

• LOT 202.23 OL-ACW*
• • *

Where does OL-ACW discharge to?

Answer 2

CW piping

Question 3

• LOT 202.23 OL-ACW*
• • *

Which loads have auto TCV’s?

Answer 3

Gen H₂ cooler (1)

Turbine Lube Oil Coolers (2)

SGFPT Lube Oil Coolers (6)

Gen H₂ Cooler TCVs controlled on CP007.

Question 4

• LOT 202.23 OL-ACW*
• • *

What are the starting permissives and auto starts for the OL-ACW pumps?

Answer 4

• Auto Start:*
• *System Pressure - Low (68 psig)**
• Downstream of the strainer*
• *Trip of Running Pump**
• Starting Permissives:*
• *Seal Water Pressure ≥ 18 psig [Unit 1 ONLY]**
• Will not trip pump*

Note:
Pressure indicator on CP009 is pressure downstream of strainer NOT pump discharge pressure.

Question 5

• LOT 202.23 OL-ACW*
• • *

What powers the OL-ACW pumps?

Answer 5

• Pump 11:*
• *LC 1D2**
• Pumps 12/13:*
• *LC 1D1**

Controlled on CP009/Locally

Question 6

• LOT 202.23 OL-ACW*
• • *

What TCVs can be controlled from the control room?

Answer 6

• CP007:*
• *Gen H₂ cooler**
• Both TCVs*

Raising demand causes bypass to open and suction to close.

Note:
All other TCVs are local control only

Question 7

• LOT 202.23 OL-ACW*
• • *

Which loads receive full flow on a loss of air?

Answer 7

Everything but CL-ACW

MG H₂ and Main Turbine LO have 2 auto TCVs.

• Provides more constant flow and temperature