Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
9 Cards in this Set
- Front
- Back
|
TACW Pump Auto Starts
|
Low Pressure on Running Pump U1 155 psig, U2 145 psig *Alarms set 5 psig higher |
|
|
TACW Pump Trips
|
Load Conservation Loadshed Overload Overcurrent |
|
|
TACW Pump Power Supplies
|
Both Pumps are powered by 600V Train B
TACW Pump flow rates are 8500 gpm U1 and 8800 gpm on U2. |
|
|
TACW Loads
|
Bus Duct Cooling Hydrogen Coolers Exciter Coolers Stator Water Coolers
Steam Packing Exhauster (Unit 1) Gland Steam Condensers (Unit 2) |
|
|
1-CMO-630
|
Inlet Valve for Steam Packing Exhauster Auto Closes on Packing Exhauster's condenser level Extreme High |
|
|
2-CMO-630, 2-CMO-635
|
Inlet Valve for Gland Steam Condenser Associated condensers valve Auto Closes on Gland Steam Condenser level Extreme High |
|
|
TACW Closed Cycle
|
1 of 2 TACW pumps takes suction on the common return header and discharge through the TACW Heat Exchanger.
The flow path is then through the parallel loads into a common return header and back to the Pump suction.
Makeup water is supplied through a small bypass line around open cycle shutoff valve c-210, which is closed at this time.
The TACW Heat Exchanger is cooled by circulating water in the heat exchanger tubes.
TACW from Hotwell temperatures >95F on U1 and >104F on U2 must be in closed cycle
--Rejects heat to lake which lowers cycle efficiency |
|
|
TACW Open Cycle
|
TACW pump suction is supplied from the hotwell pump discharge header through open cycle shutoff valve C-210.
One of two TACW pumps discharge through Heat Exchanger Bypass Valve CMO-600 the parallel loads.
The flow exits the loads to a common return header and returns to the Hotwell Pumps Discharge Header through the OPEN Cycle Shutoff valve C-249.
++Increases Cycle Efficiency |
|
|
TACW Modified Open Cycle
|
Open Cycle WITH TACW Heat Exchanger
Used up to 30% power to reduce overall condensate temperatures (in conjunction with MFP ELOs and Turbine spray).
TACW Heat Exchanger no longer has copper. Some loads do. |
