POWER August 2013 - 33

PLANT OF THE YEAR
2. Boiler fit-up. The design of the spiral-wound configuration of the B&W universal pressure
boiler is evident in this boiler assembly photo. Courtesy: AEP
parts of the world. Following Philo Unit 6,
AEP constructed 24 additional supercritical
units and is currently operating 22 of those
units. The Turk Plant continues AEP's legacy
of building the nation's cleanest, most efficient
pulverized coal-fueled generating
plants.
The Turk Plant USC boiler technology
is based on the B&W opposed-fired, spiralwound
universal pressure (SWUP) balanced
draft boiler design that burns a low-ash, lowsulfur
Powder River Basin coal. The boiler
is a two-pass arrangement with multi-lead,
ribbed-tube, spiral-wound lower furnace;
mix transition to the vertical tube upper furnace
enclosure; two-pass arrangement pendant
heating surface; and the two parallel
path gas-biasing horizontal convection pass
with reheater, primary superheater, and economizer
banks. Stainless steel tubing is used
for the superheater and reheater. The hightemperature
headers and steam leads are 9Cr
creep strength enhanced ferritic steel (Figure
2). The boiler steam flow, operating pressures
and temperatures, and other key plant performance
parameters are shown in Table 3.
Table 3. Key John W. Turk, Jr. power plant performance parameters. Turk uses an ultrasupercritical steam generator and a
system of air quality control devices to keep air emissions low. Source: AEP
Parameter
Net unit output
Net plant heat rate
Turbine throttle conditions
Fuel
Emissions NOx
SO2
CO
PM10 (filterable)
Hg
Boiler
Type
Steam pressure
Steam temperature
Turbine
Generator
John W. Turk, Jr. Power Plant
624 MW, 650 MW emergency
8,730 Btu/kWh
3,500 psig, 1,110F main steam
736 psig/1,125F reheat steam
PRB coal, 8,300 Btu/lb, 328 tons/hour, 5.5% ash, 31.0% moisture, 0.40% sulfur
0.05 lb/MMBtu, annual averge
0.065 lb/MMBtu, 30-day rolling average
0.15lb/MMBtu, 30-day rolling average
0.012 lb/MMBtu, 3 hour
Activated carbon injection, Hg limited to 1.7 lb/TBtu
Ultrasupercritical, opposed fired, spiral wound lower furnace
3,607 psig @ 100% rated load
3,788 psig @ 5% overpressure
1,114F/1,126F
Maximum continuous rating 4,420,000 lb/hr @ 5% overpressure
Rating
Type
665 MW, summer conditions
Four casing, tandem compound, single-flow high-pressure turbine; double-flow intermediate-pressure turbine; and two
double-flow, low-pressure condensing turbines
Rotational speed
Condenser vacuum
Feedwater heaters
Voltage
Capacity
Boiler feed pump configuration
Water pretreatment system
August 2013 | POWER
3,600 rpm
3.15 inches HgA, summer
HARP design with eight stages of feedwater heating, including deaerator
24 kV
840 MVA @ 0.85 PF
One 100% steam turbine-driven pump, and one 30% motor-driven start-up pump
Filtered river water for service water, cooling tower make-up and plant feedwater makeup
www.powermag.com
33
http://www.powermag.com

POWER August 2013

Table of Contents for the Digital Edition of POWER August 2013

Contents
POWER August 2013 - Cover1
POWER August 2013 - Cover2
POWER August 2013 - Contents
POWER August 2013 - 2
POWER August 2013 - 3
POWER August 2013 - 4
POWER August 2013 - 5
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POWER August 2013 - Cover3
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