steam
What is the purpose of Cold Reheat System?
Reusing this steam increases overall efficiency as it is already heated and is free of moisture
How is CCW cooled?
Air cooled heat exchanger (ACHE)
How many reheat sections are in the HRSG?
2
What is a control valve?
regulates the flow of steam into the turbine
What was the name of the man who founded Entergy? (think furniture)
Harvey Couch
providing water to the HRSG, spray water for attemperators, Turbine cooling air cooler, and fuel gas heaters.
How many ACHE units will dbaps have?
14
What is the purpose of duct burners?
to burn extra fuel to raise the temperature of the exhaust to increase the steam production
What is a stop valve?
used for quick isolation of steam to prevent overspeed of the turbine
Originally known as Arkansas Power and Lights, what year was Entergy founded?
1913
Which should be placed in service first? Gland steam seals or turning gear?
turning gear-to prevent unequal heating of the rotor surface near the glands
The CCW return header
What is the definition of superheated steam?
Where does Main Steam/HP steam bypass to?
Cold Reheat System
Which was formed after AP&L? Mississippi Power and Lights or Louisiana Power and Lights
Mississippi Power and Lights
Where do the drains from the IP and HRH steam header go?
HRSG Blowdown tank
CCW is designed to deliver water at what temp range?
70-100degF
During fill of the feedwater system, how should the low point vents and high point vents be lined up? and why
All low point drain valves should be closed, all high point vents should be opened to evacuate air/vapor in the piping system
Where does Hot Reheat Steam bypass to?
Air Cooled Condenser
What does MISO do?
an organization that manages the flow of power on the grid and operates markets for the purchase and sale of electricity.
How does Main steam and cold reheat Warming System work?
Sends steam through the warming line to the steam drain tank to heat up the supply lines until the CRS and MSS steam meets superheat requirements and the lines are warmed properly
Glycol is added to the CCW system, what is the purpose?
Glycol provides a lower freezing point, higher boiling point, decreases the vapor pressure in the fluid, and acts as a corrosion deterrent
What is a CRV? (Combined reheat valve)
stop valve and control valve are housed in the same body
What is a CRS Non-Return valve and what is the purpose?
Cold reheat system non-return valve prevents steam from flowing back into a non-operating steam turbine
18 years