United States
Environmental Protection
Agency
Industrial Environmental Research
Laboratory
Research Triangle Park NC 27711
*
Research and Development
EPA-600/S7-81-012C  Sept. 1981
Project  Summary
EPA   Utility  FGD   Survey
January  -  March   1981

M. Smith, M. Melia, N. Gregory, and K. Scalf
  This report, generated by a compu-
terized data base system, presents a
survey of operational and planned
domestic utility flue gas desulf urization
(FQD) systems, operational domestic
particle scrubbers, and Japanese coal-
fired utility boiler FGD installations. It
summarizes information contributed
by  the utility industry, system  and
equipment suppliers, system design-
ers, research organizations, and regu-
latory agencies. It presents data on
system design, fuel characteristics,
operating history, and actual perfor-
mance.  Unit by  unit dependability
parameters are included.  Problems
and solutions  associated  with  the
boilers, scrubbers, and FGD systems
are discussed.
  The domestic  FGD systems  are
tabulated alphabetically by  develop-
ment status (operational, under con-
struction, or in the planning stages),
utility company, system  supplier,
process, waste disposal practice,  and
regulatory class. FGD system eco-
nomic data, definitions, and a glossary
of terms are appended to the report.
Current data for domestic  FGD sys-
tems show 87 systems in operation,
35  systems under construction,  and'
104 planned systems. Projected 1990
FGD controlled capacity in the U.S. is
108,612 MW.

  This Project Summary was develop-
ed by EPA's Industrial Environmental
Research Laboratory, Research  Tri-
angle Park,  NC, to  announce  key
findings of the research project that is
fully documented in a separate report
of the same title (see Project Report
ordering information at back).
Introduction
  This  report  is prepared quarterly
(every 3 months) by PEDCo Environ-
mental,  Inc., under contract to the
Industrial Environmental   Research
Laboratory/Research Triangle Park and
the Stationary  Source  Enforcement
Division of  the U.S. Environmental
Protection Agency. It is generated by a
computerized data  base system, the
structure of which is illustrated in
Figure 1 (see pages 6 and 7).
  Table 1 summarizes the status of FGD
systems in the United States at the end
of March 1981. Table 2 lists the units
that have changed  status  during the
first quarter  1981, and Table 3 shows
the performance of operating units
during this period.
  Current projections indicate that the
total power generating capacity of the
U.S. electric utility industry will be
approximately 833 GW by the end of
1990.' (This value reflects the annual
loss resulting from the  retirement of
older units, which is considered to be
0.4% of the average generating capacity
at the end of each year.2) Approximately
370 GW or 44% of  the 1990 total will
come from coal-fired units. The distribu-
tion of power generation sources, both
present (December 1979)  and future
(December 1990) is shown in Table 4.1
  Based on the known commitments to
FGD by utilities as presented in Table 1,
the percentage of electrical generating

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capacity controlled by FGD for both the
present (March  1981) and the future
(December 1990) is shown in Table 5.
  In light of the revised New Source
Performance  Standards,  actual  FGD
control is expected to be greater than
what is reflected by the figures above.
For example, about 40 to 50 systems
              representing approximately 20,000 to
              25,000  MW of generating  capacity
              presently  fall  into  the uncommitted
              category. These are systems that cannot
              be included in  the committed group at
              this time because information regarding
              their status is not  ready for  public
              release.
Table 1.    Number and Total Capacity of FGD Systems
Status
Operational
Under construction
Planned:
Contract awarded
Letter of intent
Requesting/evaluating bids
Considering only FGD
systems
No. of
units
87
35
27
11
18
48
Total
controlled
capacity, MW*
32,717
14,835
13,796
8,235
10,191
28,838
Equivalent
scrubbed
capacity, MW']
29,538
14,481
13,796
8,235
10,O75
28,850
  Total
       226
108,612
                              104,975
* The summation of the gross unit capacities (MWJ brought into compliance with FGD
 systems regardless of the percent of the flue gas scrubbed by the FGD systems.
t The summation of the effective scrubbed flue gas in equivalent MW based on the
 percent of flue gas scrubbed by the FGD systems.

Table 2.     Summary of Changes—January - March 1981
                       In an  effort to  show general F
                     usage and projected usage trends, Ta
                     6 gives a current (March 1981) an
                     projected (December 1990) breakdo
                     of throwaway product systems ven
                     salable product systems as a percen
                     the total known commitments to FGD
                     of the end of the first quarter 1981.

                     Highlights:
                     January - March  1981
                       The  following paragraphs highli
                     FGD system developments during
                     first quarter of 1981.
                       Arizona Public Service announc
                     that initial FGD operations at CholL
                     commenced  in March 1981. The 3
                     MW (gross) boiler fires pulverized c
                     with an average sulfur content of O.E
                     Flue gas flows through an  ESP tc
                     double-loop,  spray-packed tower (f
                     search-Cottrell design) which uses
                     limestone slurry and treats 36% of 1
                     flue gas. The  system  operated 1 we
                     and was shut down for a beari
                     inspection.
                       Basin Electric Power Coop announc
                     that a contract was  awarded to ~
Under
Operational
FGD status report
Oecember31. 1980
No.
84
MW
28, 187"
construction
No.
34
MW
14.285
Contract
awarded
No.
30
MW
14,903"
Letter
of intent
No.
10
MW
7,515
Requesting/
Considering
eval. bids
No.
16
MW
8,735
No.
49
FGD
MW
29,640"
Total
No.
223
MW
103,26i
  Arizona Public Service
   Choi/a 4
  Basin Electric Power Coop
   Antelope Valley 2
  Cincinnati Gas & Electric
   East Bend 2
  Colorado Ute Electric Assn.
   Craig 3
  Iowa Electric Light & Power
   Guthrie Co.
  Jacksonville Electric
   Authority
   St. Johns River
    Power Park 1
   St. Johns River
    Power Park 2
  Kentucky Utilities
   Hancock 1
   Hancock 2
  Tennessee Valley Authority
   Widows Creek 7
  Utah Power & Light
   Hunter 3
   Hunter 4
  Washington Water Power
   Creston Coal 2
   Creston Coal 3
   Creston Coal 4
  West Perm Power
   Mitchell 33
126   -1



650   -1

      +7
 126

       + 1

 650

 447   -7
                                 440
                                 447
                                                   -1      440
                                                    +1     720    -1
                                                    +1
                                                    +7
                                                    + 1
                                        60O

                                        600

                                        650
                                        650
                                                                 -1

                                                                 -1
                                                          -1
                                                          -1
                                       720



                                       600

                                       600

                                       650
                                       650
+1
        575   -1

             + 7
             + 7
             + 7
 575

 400
 400
                    300
                   -1
                   -1
                          -1
400
400
                                  300
                                                                 +7
                                                                 +7
                                                                 +7
                                                     570   +7
                                                     570   +7
                                                     570   +7
                                                                               57C
                                                                               57C
                                                                               57C
  Total
                           87   29,538   35    14.481    27   13.796
                                                                   11
                                            8.235   18    10,075   48   28,850   226   104.97&
 'Equivalent scrubbed capacity.
 "This value was modified slightly due to a MW correction.

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Table 3. Performance of


Plant
Alabama Electric
Tombigbee 2
Tombigbee 3
Amona Electric
Power
Apache 2
Apache 3
Arizona Public Service
Cholla 1
Cholla 2
Cholla 4
Four Corners 1
Four Corners 2
Four Corners 3
Basin Electric Power
Coop
Laramte River 1
Big Rivers Electric
Green 1
Green 2
Centra/ Illinois Light
Duck Creek 1
Central Illinois
Public Service
Newton 1
Cincinnati Gas 4 Electric
East Bend 2
Colorado Ute Electric
Association
Craig 1
Craig 2
Columbus & Southern
. Ohio Electric
Conesvilte 5
Conesville 6
Commonwealth Edison
Powerton 51
Cooperative Power
Association
Coal Creek 1
Coal Creek 2
Delmarva Power & Light
Delaware City 1
Delaware City 2
Delaware City 3
Duquesne Light
Elrama 1 -4
Phi/lips 1-6
Gulf Power
Scholz 1
Indianapolis Power &
Light
Petersburg 3
Kansas City Power &
Light
Hawthorn 3
Hawthorn 4
La Cygne 1
Kansas Power & Light
Jeffrey 1
Jeffrey 2
Lawrence 4
Lawrence 5
Kentucky Utilities
Green River 1-3
Louisville Gas & Electric
Cane Run 4
Cane Run 5
Cane Run 6
FGD system
caoacttv
MW

179
179


98
98

119
264
126
175
175
229


570

242
242

416


617

650


410
410


411
411

450


327
327

60
60
60

510
408

20


532


90
90
820

540
490
125
420

64

188
200
299
Operational Units — January -
FGD
capacity
on line

Flue gas
% scrubbed

70
70


50
50

100
too
33
too
too
100


too

too
too

100


100

too


90
90


100
100

100


60
60

too
too
too

100
IOO

N/A"


100


100
100
too

75
70
too
too

too

100
too
too
during No information
period for this
MW period. MW

179
179


98
98

119
264
126
175
175
229


570

242
242

416


617

650


410
410


411
411




327
327

60
60
60

510
408

20


532


90
90
820

540
490
125
420



188
200
299
March 1981
Shut down
January 1981
throughout Dependability %
pprinri
MW AVL





100
too









too




93


99




40
79


91
98

450


too
100

90
93
64

too
70







100
100
87






64 IOO

81
100
86

OPR





63
S3









95




92


90




48
78


86
92




44
57

90
93
64

75
69







too
100
too








81
100
83

REL





IOO
too









too




96


IOO




48
78


85
92







90
93
64

77
95







too
too
83








81
IOO
83
February 1981
'•' Dependability %

UTL AVL OPR REL





63 100 11 100
46 100 27 100









92 100 95 100




92 91 92 99


90 100 95 tOO




38 9 8 9
78 66 66 66


77 94 92 92
92 92 85 85

0


44 83 53
57 100 57

90 86 84 84
93 96 96 96
64 88 88 88

75 97 82 82
69 95 69 73







74 85 100 67
67 5 tOO 5
68 99 100 99






• 0 100

81 0 0
89 82 77 77
so too too too
March 1981
" Dependability %'

UTL AVL OPR REL





11 100 54 100
27 79 24 53









85 100 99 100




9O 87 84 88


95 90 67 100




7 12 12 12
66 52 53 54


86 4-20 26
78 75 97 99

0


43 47 61
56 55 55

76 96 96' 96
96 S3 89 89
88 81 83 83

82
69







30 52 100 100
5 86 IOO 100
66 97 96 97






o too

o too 100 too
59 tOO 46 46
72 IOO 34 34

:,•

UTL





44
24









97




80


62




12
52


1
59

0


29
31

95
58
83










52
62
81






0

39
43
28

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Table 3. (continued)
FGD system
t
Plant
Mill Creek 1
Mill Creek 3
Paddy's Run 6
Minnesota Power ft
Light
Clay Boswell 4
Minnkota Power ft Light
Milton ft. Young 2
Monongahela Power
Pleasants 1
Pleasants 2
Montana Power
Co/strip 1
Colstrip 2
Nevada Power
Reid Gardner 1
Reid Gardner 2
Reid Gardner 3
Northern Indiana
Public Service
Dean H. Mitchell 1 1
Northern States Power
Riverside 6,7
Sherburne 1
Sherburne 2
Pacific Power ft Light
Jim Bridget 4
Pennsylvania Power
Bruce Mansfield 1
Bruce Mansfield 2
Bruce Mansfield 3
Public Service Co. of
New Mexico
San Juan 1
San Juan 2
San Juan 3
Salt River Project
Coronado 1
Coronado 2
South Carolina Public
Service Authority
Winyah 2
Winyah 3
South Mississippi Electric
R.D Morrow, Sr. 1
R.D. Morrow, Sr. 2
Southern Illinois
Power Coop
Marion 4
Southern Indiana
Gas ft Electric
A.B Brown 1
Springfield City Utilities
Southwest 1
Springfield Water,
Light, ft Power
Dallman 3
St Joe Zinc
G f. Weaton 1
Tennessee Valley Authority
Shawnee 10A
Shawnee 10B
Widows Creek 7
Widows Creek 8
Texas Power ft Light
Sandow 4
Texas Utilities
Martin Lake 1
Martin Lake 2
capacity.
MW
358
442
72


475

185

618
618

360
360

125
125
125


115

110
740
740

550

917
917
917


361
350
534

280
280

14O
280
124
124


173


265

194


205

60

10
to
575
550

382

595
595
Flue gas
% scrubbed
IOO
100
too


85

42

100
100

100
100

IOO
too
100


99

N/A"
91
91

100

100
100
IOO


IOO
IOO
roo

80
80

50
too
62
62


100


IOO

IOO


100

N/A'

N/A'
N/A'
roo
IOO

70

75
75
FGD
capacity
online Shutdown January 1981 February 1981 March 1981
during No information throughout Dependability %"* Dependability %°* Dependability %"•'
nttnpff fnr f/lic nnrifirf
MW' period, MW MW AVL OPR REL UTL AVL OPR REL UTL AVL OPR REL U
358 51 46 46 42 52 52 52 52 39 36 36
442 00 000 0111
72 IOO 0 100 0 100


475 100 95 100 95 100 82 100 81 100 92 100

185 84 94 100 84 95 100 100 95 88 95 100

618
618

360 96 97
360 98 97

125 85 85 85 85 43 54 54 43 76 73 73
,25 97 96 97 84 93 90 89 75 100 98 98
,25 99 99 99 99 100 IOO 100 100 89 67 67


115 IOO 0 0 100 0 0 100 0

110
740 too loo roo roo too 100. too 95 100 too 100 i
740 100 roo 100 roo too too 100 99 too wo too i

550

917
917
917


3S1 100 99 rOO 97 98 92 96 84 1OO 66 82
350 97 76 98 76 96 31 99 25 94 82 94
534 100 90 98 55 81 80 80 75 98 97 98

280
280

,4O 99 99 99 99 97 97 97 97 IOO WO IOO 1
280 66 8O 80 66 86 88 88 82 85 WO 100
,24 IOO 0 IOO 92 IOO 12 86 SO 80
,24 89 98 98 87 IOO IOO 100 86 86 87 87


,73 59 50 53 49 67 67 67 67 65 72 75


265 99 99 99 99 99 99 99 99 94 86 88

194 58 54 71 54 46 43 46 43


206 100 58 58 SB 50 48 95 40 50 46 46

60 00 000 000

10
10
575
550

382

595
595

-------
 tie 3.    Concluded
FGD system

Plant
'arlm Lake 3
'onticello 3
i/i Power & Light
(inter 1
jnter 2
•jntington 1
"otal
-
MW
595
800

360
360
366
29.538

% scrubbed
75
too

90
90
86

FGD
capacity
on line
during No information

MW* period, MW
595
800

360
360
366
25,825 2.402
Shut down January 1981
throughout Dependability %

MW AVL OPR REL



100
100
100
1.311
February 1981
'* Dependability %

UTL AVL OPR REL



93 100
89 100
96 100

March 1981
" Dependability %"

UTL AVL OPR REL UTL



95 100 31
96 1OO 99
1OO 100 94

 uvatent scrubbed capacity
 s category includes the flue gas capacity being handled by the FGD system at least pan of the time during the report period
 ' percent figures listed are average values for all system scrubbing trains during the period.
 B gas % scrubbed for prototype and demonstration units is not applicable unless the system is designed to bring a unit into compliance with SOi emission standard.
 viability, operabilny. reliability, and utilization as defined in Appendix C of the full report
 nufacturing/Niro Atomizer for  a
 e/spray drying FGD system to be
 tailed at Antelope Valley 2. The 440
 V (gross) unit will fire lignite with an
 !rage sulfur content of 0.68%. Opera-
 is are scheduled to commence in
 ober 1985.
 'he limestone FGD system operated
 Laramie  River  1  of Basin Electric
 rver achieved 100% availability for
  first quarter of 1981. The  system
 srated for the 3 month period with no
 jor problems reported.
 'he dual-alkali scrubbing system
 tailed at Newton 1 of Central Illinois
 ilic Service achieved availabilities of
 %, 100%, and 90%  during January,
 jruary, and March,  respectively. No
 ijor FGD-related  problems were
 iorted during the three months.
 nitial operation of the FGD system at
 st  Bend 2  of  Cincinnati  Gas  and
 ictric commenced  in  March  1981.
 e  unit fires pulverized coal with an
 srage sulfur content of 3.0%. A hot-
 e ESP is followed  by three lime FGD
 >dules, supplied  by Babcock  and
 Icox. The stabilized sludge from this
 >sed water loop system is disposed of
 an on-site landfill. The system
 erated  in a shakedown/debugging
 ase during March.
 Colorado Ute Electric announced that
 nstruction of the Craig 3 FGD system
 gan during the first quarter of 1981.
 le  lime/spray-drying system is being
 pplied by Babcock and Wilcox.  The
 I5-MW (gross) unit will fire pulverized
 ibbituminous coal  with an average
ilfur content of 0.45%.  A fabric filter
ill be used to collect the flyash and the
y calcium sulfite/sulfate paniculate
alter (as well as any unused reagent).
Table 4.    Power Generation Sources; Present and Future

                  Coal  Nuclear   Oil    Hydro    Gas    Other
                                    GW (total)
December
December
1979
1990
39%
44%
9%
14%
25%
20%
13%
11%
13%
10%
1%
1%
603
833
Startup of the FGD system is expected in
April  1983.
  Columbus and Southern Ohio Electric
reported that the  Conesville 5 FGD
system achieved availabilities of 91%
and  94% for January and  February,
respectively. The  Conesville 6 FGD
system achieved availabilities of 98%
and 92% for the same period, respec-
tively. No major FGD-related problems
were  reported for either system during
the 2 months. March performance data
were  not provided.
  The 20-MW  prototype  dual-alkali/
limestone test program being conducted
by Thyssen/CEA and Arthur D. Little at
the Scholz station  of Gulf Power was
completed on March  28. The program
was conducted to determine the feasi-
bility  of using  limestone rather than
lime  as the source  of calcium for
regeneration  reactions. The system
reportedly achieved SOz removal  ef-
ficiencies of 96% and 97% during
February and  March, respectively.
            There are no current plans to continue
            operation of the prototype.
              The Elrama FGD system of Duquesne
            Light achieved availabilities of 100% for
            January and 97% for February. With the
            exception  of some absorber module
            lining repairs during February, no major
            operational problems were encountered
            during the 2 months. Information for
            March was not provided.
              Iowa  Electric  Light  and  Power an-
            nounced that a  letter of  intent  was
            signed  with  Combustion Engineering
            for  the  installation of a wet limestone
            scrubbing system on Guthrie County 1.
            The unit is rated at 720 MW (gross) and
            will fire pulverized subbituminous coal
            with an average sulfur content of 0.4%.
            An  ESP will provide primary particulate
            matter control. Operations are scheduled
            to commence in October 1984.
              Jacksonville  Electric Authority an-
            nounced that bids are being requested
            for  wet limestone FGD systems to be
            installed at Units  1  and 2 at the St.
Table 5.    FGD Controlled Generating Capacity; Present and Future
                     Coal-fired generating
                      capacity controlled
                          by FGD. %
                         Total generating
                        capacity controlled
                            by FGD, %
 March 1981*
 December 1990
13.9
29.6
 5.4
13.0
 *The number of committed FGD systems is as of March 1981; however, the figure
  used for the total generating capacity and coal-fired generating capacity is based on
  the available December 1979 figures.

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Boiler Stack
Boiler Supp.
Boiler Type
Gas Flow Rate
Stack Height
Stack Liner


Fuel
Type
Grade
Heat Content
Sulfur -%





Particulate
Matter
Control

1
Mechanical
Collector
Type
Supplier
Removal Eff
Design AP


Quenchers/
Presaturators
Type
Supplier
Design AP
L/C Ratio









ESP
Type
Supplier
Removal Eff
Design AP

Fabric Filter
Type
Supplier
Removal Eff
Gas/Cloth Rat

1
Mist
Eliminators
Type Supplier
Horn/Vert
Stages
Passes/Stage

Absorbers
Type
Supplier
Gas Flow Rate
L/G Ratio
Removal Eff




\



FGD General
Data
Process Type
Supplier
New/Retrofit
Start Date Status



FOG
Design
information

P 'articulate
Matter Scrubber
Type Supplier
Gas Flow Rate
L/G Ratio
Removal Eff



Fans
Design
Supplier
Application
Gas Flow Rate

Reheaters
Type
Location
Heading Med
Flue Gas A T












I
Spare
Component
Index
Absorber
Fan
Pump

Spare
Capacity
Index
Absorber
Fan
Pump


Ductwork
Location
Configuration
Dimensions

Dampers
Function
Type
Manufacturer





Pilot
Partict
ProL
Testr

1
Tanks
Type
Location
Configuration
Capacity

Reagent
Preparation
Equipment
Device Type
Function
Feed Capacity
Pun
Tyt
Manufi
Cape
Ser
                                                                                                             I
                                                                                                         Recovt
                                                                                                           Prod
                                                                                                             Typ
                                                                                                           Quan
                                                                                                         Dispos
                                                                                                              r
Figure 1.     Computerized data base structure diagram.

                                  6
                                                                                                          Treatn
                                                                                                           Meth
                                                                                                         Device
                                                                                                         Inlet Cr
                                                                                                        Outlet C

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      _L
    Process
  Control and
 instrumentation
   Proc Stream
   Parameters
   -Chemical
   -Physical
                                           I
                                         Unit
                                     Performance
                                         Date
                                     Boiler Hours
                                      Boiler A vail
                                    Capacity Factor
   Removal
 Performance
SOsREM   -%
Part REM   -%
     I

  Literal
Information
Comments/
  Abstract
 'Ct
'6
ity
ition

-------
Johns River Power Park. Each 500-MW
(gross) unit will fire pulverized coal with
an  average  sulfur content of 2.5%.
Initial operations are scheduled  for
1985 and 1987, respectively.
  Kentucky  Utilities announced that
bids are being requested for limestone
FGD systems at Hancock 1 and 2. The
708-MW (gross) units will be located in
Hawesville,  Kentucky, and will fire
Western Kentucky coal with an average
sulfur content  of 3.5%. ESP's will be
used to control paniculate  matter
emissions. Operations are scheduled.to
commence in 1988 and 1994, respec-
tively.
  The FGD system at Clay Boswell 4 of
Minnesota Power and Light achieved
100%  availabilities  during January,
February, and March. No major problems
were reported for the lime/alkaline
flyash FGD system during the 3 months.
  Montana  Power reported that the
Colstrip 1  FGD system achieved avail-
abilities of 96% and 97% for January
and February, respectively. The Colstrip
2 FGD system achieved availabilities of
98  and 97% for the same 2 months,
respectively. No major  FGD  related
problems  were reported for  either
system. March performance data were
not provided.
  The  limestone/alkaline flyash FGD
systems installed at Sherburne 1 and 2
of Northern States Power achieved
100% availabilities for  the first quarter
of 1981. No major operational problems
were reported for the 3 months.
  San Juan  1  of the Public Service of
New Mexico achieved availabilities of
100%, 98%,  and 100% during January,
February, and March, respectively. San
Juan 2 achieved availabilities  of 97%,
and 94% during the same  period,
respectively. No  major  FGD-related
problems  were  reported  during  the
three months.
  The limestone FGD system installed
at Winyah 2 of South Carolina Public
Service achieved availabilities of 99%,
97%, and  100% during the months of
January, February, and March, respec-
tively. An expansion joint problem in the
quencher discharge pump was the only
major problem  reported  during the 3
months.
  The  FGD  system  installed  at A.B.
Brown 1 of Southern Indiana Gas and
Electric achieved availabilities  of 99%,
99%, and 94% during January, February,
and March,  respectively.  Some minor
pump and vacuum filter problems were
reported during the 3 months; however.
Table 6.    Summary of FGD Systems by Process
                                                 Percent of total MW
                                                March
                                                1981
                              December
                                1990
 Throwaway product process

        Wet systems

 Lime
 Limestone
 Dual alkali
 Sodium carbonate
 NA*

        °Dry systems

 Lime
 Sodium carbonate

 Salable product process

        Process
                 39.6
                 47.4
                  4.1
                  3.1
                  0.4
20.2
36.2
 1.9
 3.0
 6.3
 2.9
 0.4
Byproduct
Aqueous carbonate/
spray drying
Citrate
Lime
Limestone
Lime/ limestone
Magnesium oxide
Wellman Lord
Wellman Lord
Process undecided

Elemental sulfur

Elemental sulfur
Gypsum
Gypsum
Gypsum
Sulfuric acid
Sulfuric acid
Elemental sulfur

Total
—

0.2
—
—
—
—
2.4
2.8
—
100.0
0.1

0.1
0.1
0.2
0.5
0.7
1.2-
0.7
25.5
100.0
  Not available  (these systems are committed to a throwaway product  process;
  however, the actual process is unknown at this time).
overall system  unavailable time was
minimal.
  Tennessee Valley Authority announced
that initial FGD operations at Widows
Creek 7  commenced in March  1981.
The 575-MW (gross) unit fires pul-
verized  coal  with an average sulfur
content  of 3.7%. The limestone spray
tower absorber FGD system is preceded
by  an ESP and four variable-throat
venturies for primary paniculate matter
control. The system operated in a shake-
down/debugging mode throughout
March.
  Utah Power and Light announced that
construction of the FGD  systems  at
Hunter 3 and 4 began in March 1981.
The 400-MW (gross) units are being
constructed in  Castledale, Utah, and
will fire pulverized bituminous coal with
an average sulfur content of 0.55%. GE
Environmental Services, Inc. (formerly
Chemico) is supplying  the limestone
FGD systems which  are expected  to
begin initial operations  in 1983 and
1985, respectively.
          Washington Water Power announced
        plans to construct Creston Coal 2,3, and
        4 in Creston, Washington. Each 570-
        MW (gross) unit will use a limestone
        FGD system for S02 control. Construc-
        tion at this site is  scheduled to com-
        mence in 1983, with initial operation of
        the units currently scheduled for 1987.
          West Pennsylvania Power announced
        that construction of the Mitchell 33 FGD
        system began in March 1981. This 300-
        MW (gross) unit is being constructed in
        Courtney, Pennsylvania, and will fire
        coal with an average sulfur content of
        2.8%. The lime scrubbing process is
        being supplied  by  GE  Environmental
        Services, Inc., and is designed for a 95%
        SOz removal efficiency.  The system is
        expected to commence operation  in
        August 1982.

        References
        1.  U.S. Department of Energy.  Energy
           Information Administration. Office
           of Coal and Electric Power Statistics.
           Electric Power Statistics Division.
                                  8

-------
Inventory  of Power Plants in the
United States, December  1979.
Report No. DOE/EIA-0095 (79).
Rittenhouse, R.C.  New Generating
Capacity:  When,  Where, and by
Whom. Power Engineering 82(4):57.
April 1978.
M. Smith. M. Melia, N. Gregory, and K. Scalf are with PEDCo Environmental,
  Inc., Cincinnati, OH 45246.
Norman Kaplan is the EPA Project Officer (see below).
The complete report, entitled "EPA Utility FGD Survey, January-March 1981,"
  (Order No. PB 81 -225 773; Cost: $23.00, subject to change) will be available
  only from:
       National Technical Information Service
       5285 Port Royal Road
       Springfield.  VA 22161
       Telephone: 703-487-4650
The EPA Project Officer can be contacted at:
       Industrial Environmental Research Laboratory
       U.S. Environmental Protection Agency
       Research Triangle Park, NC 27711
                                                                    US GOVERNMENT PRINTING OFFICE, '981 -757-012/7338

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