ML20113A149
| ML20113A149 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 03/29/1985 |
| From: | Foster D GEORGIA POWER CO. |
| To: | Adensam E Office of Nuclear Reactor Regulation |
| References | |
| GN-569, NUDOCS 8504090518 | |
| Download: ML20113A149 (17) | |
Text
Georgra Power Company Route 2. Box 299A Waynesboro. Georg1a 30830 e Te:ephone 401554 996t. Ext 3360 404 724 8114. Ent 3300 Georgia Power D. O. Fost.,
$.'n'$7IOC'[E me = *oekt'csniem Vogtle Pf 0JeCf March 29, 1985 Director of Nuclear Reactor Regulation File: X7BC35 Atten'. ion: Ms. Elinor G. Adensam, Chief Log: GN-569 Licensing Branch #4 U.S. Nuclear Regulatory Commission Washington, D.C. 20555 NRC DOCKET NUMBERS 50-424 AND 50-425 CONSTRUCTION PERMIT NUMBERS CPPR-108 AND CPPR-109 V0GTLE ELECTRIC GENERATING PLANT - UNITS 1 AND 2 APPLICATION FOR OPERATING LICENSES AMENDMENT 6 TO THE ENVIRONMENTAL REPORT - OPERATING LICENSE STAGE (ER-OL)
Dear Mr. Denton:
Georgia Power Company, acting on its own behalf and as agent for Oglethorpe Power Corporation, Municipal Electric Authority of Georgia, and the City of Dalton, Georgia, hereby submits Amendment 6 to the ER-OL.
Included in this transmittal are instructions for inserting this amendment.
This amendment consists of revised pages to the ER-OL that have resulted from updated information since the last amendment and review of the Draft Environmental Statement.
In accordance with the requirements of 10 CFR 50.30(c)(1) and (c)(1)(IV),
three (3) signed originals and forty-one (41) copies of this amendment l
are submitted for your use.
Should you have any questions on the enclosed submittals, do not hesitate to contact us.
Yours truly, h 0'W/4 D. O. Foster DOF/DHW/js Enclosures cc: List attached 0\\
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f Director of Nuclear Reactor Regulation File:
X7BC35 March 29,1985 Log: GN-569 Page 2.
cc:
M. A. Miller R. A. Thomas J. A. Bailey L. T. Gucwa G. Bockhold, Jr.
G. F. Trowbridge, Esquire J. E. Joiner L. Fowler C. A. Stangler SWORN AND SUBSCRIBED BEFORE ME THIS d 9t{ day of
/Afsic4.
1985.
dco aN M
NytpyP6blic Ge6rgia, State at Large W COMMISSION N APRIL 11.1988 w
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l VOGTLE OLSER v
l.
Amendment 6 i
March 29, 1985 ii i
Page Instruction i
- p. 3.6-3 Replace i
+
j
- p. 3.6-3b Add
- p. 3.6-4a~
Add
- p. 3.6-9 Replace l
i t.
3.9-2 Replace t.
3.9-3 Replace i
l
- p. 5.7-3 Replace I
I
- t. 12.1-4 Replace G
- t. E290.8-1 (2 Sheets)
Replace (Behind Tab April 17, 1984) i I
t t
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1 1
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VEGP-OLSER-3
<j As discussed in subsections 3.3.1 and 3.4.1, makeup water is supplied to the main cooling towers from the Savannah River.
During normal operation the. makeup flow is varied to replenish
( ~/
)
circulating water system losses due to evaporation, drift, and blowdown.
Blowdown flow is varied to maintain the circulating water cycles of concentration between two and six.
The circulating water chemical injection system provides acid and chlorine to maintain proper pH and' control biological
("N growth.
Sulfuric acid, 66* Baume', is added to the circulating
(~)
water system through metering pumps at a rate sufficient to reduce alkalinity and maintain the pH that will result in a Ryznar Index of between 7.0 to 7.5 to balance scaling and corrosion effects.
Chlorine is added to the system to control biological growth in the tower-condenser system.
Chlorine is injected as a gas dissolved in water.
The river water makeup system will be continuously chlorinated 2
as necessary during the Corbicula spawning season up to a level l
of 10 ppm providing a free available chlorine concentration of 1 ppm.
Chlorine is diffused into the suction of the river makeup water
(^}
pumps at the river intake structure.
The river intake structure
(_/
is equipped with two 6,000 lb/ day capacity chlorine evaporators 1
in series.
Grab samples are taken at the discharge of the river makeup water pumps to monitor chlorine concentrations.
Chlorine is injected directly at the circulating water system intake structure.
There are three 10,000 lb/ day chlorinators in series (one as a backup) to serve both units.
Grab samples will be taken from the natural draft cooling tower blowdown line to monitor chlorine concentrations.
Chlorination rates will vary depending on system conditions.
The amount of chlorine added depends upon the rate of biological growth in the circulating water.
In general, intermittent
(~)
chlorination to produce approximately 0.2 mg/l free available 6
'wJ chlorine in the circulating water is expected.
During the summer, because of increased biological growth on warm days, chlorine is injected from usually 1 to 3 times / day.
During the winter when chlorine demand is low, a single weekly injection period is. required.
The maximum free available chlorine 1
(~s downstream of the blowdown sump will be limited to an
(_)
average of 0.2 mg/l with a maximum spike of 0.5 mg/1.
At present, the EPA does not have an effluent limitation on total residual chlorine for cooling tower blowdown, however, neither free available chlorine nor total residual chlorine may be discharged from any one unit for more than 2 h per day.
Amend. 1 2/84 Amend. 2 4/84 3.6-3 Amend. 6 3/85
ll -
VEGP-OLSER-3 Operating experience with other cooling towers within the region have shown a total residual chlorine concentration in the blowdown usually less than 0.1 mg/1.
The total residual 1
6 chlorine concentrations of the cooling tower blowdown at the VEGP should be in the same range as that O
9 O
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Amend. 1 2/84 3.6.3-a Amend. 6 3/85
J i.
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h 3.6-3b Amend. 6 3/85
l VEGP-OLSER-3 found at other cooling towers within the region.
The system is designed to ensure that the station effluent meets EPA chlorine effluent limitations (section 5.1.1).
During Corbicula spawning season, chlorination at the river intake structure makeup pumps may be continuous up to a level of 10 mg/l providing a 1.0 mg/l free available chlorine.
This type of chlorination scheduled has been utilized at other GPC facilities.
For facilities where a free available concentration of 1 ppm has been maintained for 4 to 5 days / month during Corbicula spawing season, there has been no evidence observed of Corbicula in the circulating water system or in other plant cooling systems.
Where a total residual concentration of 1 ppm has been maintained for 4 to 5 days /mongh, there has been 6
evidence of Corbicula observed in the circulating water, but not in other plant cooling systems.
Based on this experience, GPC expects that maintaining a free available concentration of 1 ppm for 5 day / month will control Corbicula.
If Corbicula are observed in the circulating water system, GPC will increase the duration of the concentration of free available chlorine as necessary.
The use of the dechlorination system during chlorination for Corbicula will assure that effluent limits are maintained.
Discharge from the two natural draft cooling towers is combined in a sump, with discharge from the nuclear service cooling water towers and other station liquid waster discharged from the waste water retention basin.
The sump liquid is combined with other station effluents as discussed in subsection 3.6.3 and discharged to the Savannah River.
Suspended solids deposition in the circulating water system is controlled through the use of dispersants, as required.
The dispersant is selected and used according to specific needs.
Mud and other solids are deposited in the bottom of the cooling tower basin.
These wastes are discussed in paragraph 3.6.4.1.
3.6.1.2 Nuclear Service Cooling Water (NSCW) System The VEGP utilizes one operating and one spare NSCW tower per unit as described in the Final Safety Analysis Report (FSAR) section 9.2.1.
During normal operation, the blowdown flow is varied to maintain the cycles of concentration to between two and eight.
h Acid and chlorine injection is provided to control pH and to inhibit biological growth.
Sulfuric acid (66 Baume') is added as required to maintain a pH that will result in a Ryznar index of 7.0 to 7.5 to balance scaling and corrosion effects.
Tower chlorination varies usually from three times per day on warm Amend. 1 2/84 3.6-4
. Amend. 6 3/85 l
[)
VEGP-OLSER-3 x_-
summer days to one time per week during the winter.
A dispersant is applied as needed to control the suspended solids contents.
7_
Chlorine is injected in the NSCW pump discharge.
Grab samples will be taken from the blowdown line to monitor chlorine concentrations.
The maximum free available chlorine concentration will be limited to an average of 0.2 ppm with a maximum spike of 0.5 ppm in the blowdown.
(^}
Chlorination rates will vary depending on system conditions.
6
\\/
The NSCW system is equipped with two 2000 lb/ day capacity chlorine evaporators in series.
There is only a remote 1
possibility of the NSCW system becoming contaminated with Corbicula.
That remote possibility occurs if river water makeup is provided for the NSCW system.
If that occurs prolonged continuous chlorination will be employed to ensure that there is no infestation of the NSCW system by Corbicula.
Total residual chlorine concentrations in the blowdown will be similar to that discussed for the main circulating water system.
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Amend. 1 2/84 3.6-4a Amend. 6 3/85 r
VEGP-OLSER-3 O
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01 3.6-4b Amend. 6 3/85
(
VEGP-OLSER-3 3.6-2.
The plant waste discharge conforms to the requirements discussed in subsection 5.1.1.
c
(
)
(_/
3.6.4 CHEMICAL AND BIOCIDE SOLID WASTES The VEGP chemical and biocide solid wastes consist of settled solids from the waste water retention basins and the cooling tower basins and salt drift emissions from the cooling towers.
m I )i w.
3.6.4.1 Settled Solids Removal Each natural draft cooling tower has a solid deposition rate of approximately 2.5 lb/ min into the basin.
The basins have a desilting channel that leads to the 24-in. blowdown line which goes to the blowdown sump for discharge into the river.
The towers are also equipped with access ramps so that silt and sludge buildup may be removed.
This is expected to occur during normal plant outages.
Cooling tower sludge will be disposed of in an approved upland disposal site.
Solids removed from the waste water retention basin will also be disposed of in an upland disposal site.
Previous operating
{'Ny,)
experience has revealed that these solids and cooling tower y
settled solids are not hazardous (see section 5.6.3) and can be di.sposed of in an approved upland disposal site.
3.6.4.2 Cooling Tower Salt Drift Emissions Salt drift emissions from the natural draft cooling towers for a four-unit plant are discussed in CPSER subsection 5.3.2.
The NRC staff concluded (FES paragraph 5.5.1.1) that the effects of deposition of cooling tower salt drift would be negligible.
Appendix 3B is a report by Dr. Morton I. Goldman of NUS g
(~N Corporation on VEGP cooling tower drift.
This document. replaces
(_)
earlier estimates provided in responses and separate submittals to Nuclear Regulatory Commission questions which bounded the expected cooling tower drift estimate.
This document provides a definitive description of cooling tower drift from VEGP cooling 6
towers and calculates the site-specific drift deposition s.
patterns, a realistic maximum estimate of about 0.1 lb/ac/yr and
(' )
a conservative maximum estimate of less than 2 lb/ac/yr, both onsite and offsite.
This document substantiates that a drift deposition monitoring program is not needed.
r q
Amend. 1 2/84 Amend. 3 5/84 3.6-9 Amend. 6 3/85
i.
TABLE 3.9-2 PHYSICAL CHARACTERISTICS OF VEGP TRANSMISSION LINES a
Lengths of Dirrerent Widths of R/W IMiles)
Total Length or game or Line'/Section-275 ft 150 ft 137.5 ft 125 ft 100 ft Pa ra l l e l lines (Miles)
P'l' ant Vogtle-Wadley-Wallace Dam-Plant Scherer 500-kV transmission line o Plant Vogtle-Wadley section*
24.6 17.8 17.8 e Wadley-Wallace Das section 42.4 13.9 13.9 e Wallace Dam-Plant Scherer section 49.2 3.5 0.9 4.4 116.2 35.2 e -Total 0.9 36.1 Plant Vogtle-Erringham-Thalmann 500-kV transmission line 68.8 0.3 h
o Plant Vogtle-Erringham section O
t 83.6 e.Erringham-Thalmann section 6.2 45.1
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6.2 45.4 "o
Total 152.4 m
t4 Plant Vogtle-Coshen No.1, No. 2, and No. 3
>3 230-kV transmission line 18.80 18.8 I
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3.8 18.5 4.0 Plant Vogtle-South Carolina Electric & Cas 6
(SCEC)
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O TABLE 3.9-3 LAND USE CATEGORIES OCCUPIED BY TRANSMISSION CORRIDORS Classification of R/W ( Acres)
Fields and Name or Line/Section Wooded Cultivated Wetlands U rban Pines Ha rdwood s Plant Vogtle-Wad ley-Wa l lace Dam-Plant Scherer 500-kV transmi ssion l ine o Plant Vogtle-Wadley section 280 232 224 7
e Wadicy-Wallace Dam section 419 310 257 13 4
e Wallace Dam-Plant Scherer section 534 313 96 16 5
e Total 1233 855 577 36 9
Plant Vogtle-Erfingham-Thaimann 500-kV transmi ssion line o Plant Vogtic-Erringham section is08 455 385 82 O
o Erringham-Thalmann section 866 730 8
192 2
I e Total 1274 1185 393 274 O
6m h
Plant Vogtle-Goshen No.
1, No. 2, and No. 3
- 275, 220 123 25 2
230-kV transmission line 1
W Plant Vogtte-South Carolina Electric & Gas 230-kV 168 64 5
36 transrnission line ts (D (D DD D Ea4 a.
Apporximately 270 acres of wooded wetlands were included in both the wooded and 6ww wetland categories.
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VEGP-OLSER-5 D.
Construction Materials Construction materials in the form of steel, concrete,
[_s\\--}
timber products, etc., cannot be practically retrieved and are thus consumed.
E.
Wildlife Habitats The area that will be removed from biological pro-(~T ductivity and used for buildings, roads, parking, and
(~)
other facilities will total 717 acres or 23 percent of the site's total 3169 acres.
Approximately 1777.9 acres (56 percent) will be managed in accordance with approved land management practices (see D.
O.
Foster letter to E. G.
Adensam, January 9 1984).Approximately 600 acres of pine and mixed pine land on the site will be burned under control conditions during the months of January or February 1984 and periodically throughout the life of the plant.
The controlled burn activities will enhance the productivity of the areas burned.
Burning activities of these types are accepted land management practices.
These activities are conducted during the winter months in order to minimize the f')
damage to trees and to take advantage of the wet sublayer.
s/
1 The portions of the site to be burned are prepared by developing fire breaks around them.
These fire breaks were developed by the Georgia State Forestry Commission.
Furthermore, the burn activities will be supervised by representatives of the Forestry Commission and Georgia Power Company.
Only portions of the site will be burned at any one time and this activity will be coordinated with expected traffic.
The burning activities will be conducted during periods of low but steady wind.
(~)
The areas to be burned are far removed from plant
\\_/
facilities.
Plant supervision will be notified before any burn activity is initiated.
The plant fire brigade will also be notified; however, the burning activity will not require their participation.
Of the 1453.2 acres that were originally disturbed by l6 k
construction, 569.6 acres will be fertilized and 5
j reseeded and 148.5 acres will be involved in onsite l
transmission 11nes and 18.6 acres will remain as ponds.
i Existing habitat including transmission corridors may
(
be enhanced due to increased edge effect created by gw planting and landscaping following the construction I
\\m 5.7-3 Amend. 1 2/84 l
Amend. 5 3/85 l
l Amend. 6 3/85 l
1
h VEGP-OLSER-5 phase.
The acreage used for offsite transmission lines will also create an edge effect and thus enhance wild-life habitat.
The terrestrial habitat within at least a 5-mile radius of the site is very similar to that found on the plant site; therefore, a very small percentage of habitat will be lost from the total area.
There should be no significant impact to the aquatic habitat, because the cooling towers will be used to minimize thermal effects and chemical releases will meet effluent guideline limitations as discussed in section 5.1.
The operation of the VEGP will affect the environment in terms of the irretrievable and irreversible commitment of natural resources to the extent indicated above.
However, the extent to which the use of the environment is curtailed is not considered serious and is warranted due to the benefits of the electrical power produced.
Chapter 11 presents the overall cost-benefit analysis for the VEGP.
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O TABLE E290.8-1 (SHEET 1 OF 2)
. COOLING TOWER. DRIFT PARAMETERS FOR VOGTLE AND FOUR OTHER PLANTS Plant /
Type or Cooling Vogtle/
Susquehenna/
Beave r Va l l ey/
Shearon Ha rris/
Crand Culf/
Tower Na tu ra l D ra f t Na tu ra l Dra r t Na tu ra l D ra f t Na tu ra l Dra f t Na tu ra l D ra f t Unit 1 Unit 2 Number or cooling towers 2
2 1
1 4
2
" Holght or cooling tower 550 ft 540 ft 501 ft 502 f t 520 ft 522 rt Gua ran teed 0.03%
0.02%
0.05%
0.013%'"'
O.05%'"3 0.008%("I Drift Rate Expected 0.008% "3
'O.002% "I 0.005%
NA 0.002%
NA I
I Ci rcula t ing wa te r f low ra te 484,600 gpm 478,000 gpm 480,100 gpm 507,400 gpm 482,000 gpm 572,000 gpm 4
Concentration in makeup 60 mg/L (avg) 432 mg/t'I 204 mg/L (avg) 203 mg/E 70 mg/L (avg) 376 mg/L (avg) l (max)
(avg) g concentration ractor 4 (avg)
'3.8 (avg) 1.8 (avg).
1.8 (avg) 7.7 (avg) 5 (max)'*I
. Concentration 'in blowdown 2f40 mg/L (avg) 1640 mg/E*I 368 mg/L (avg) 365 mg/l-539 mg/L (avg) 1880mg/t'*kmax) b I
(max)
(avg) t1 In Evaporation rate 3.0%
2.3%
1.5%
2.b%
1.5%
1.8%
y' h
Plant capacity 0.8 0.8 0.8 0.8
.8 0.8
"< 100 pm 45%
20%
NA 35%
NA 45%
- D rop l e t.
gg y size -
100-300ym 50%
70%
NA 65%.
NA 55%
distribution
>300 pm 5%
.10%
hA 0%
NA 0%
j Rate 17 lb/ acre /yr 3 lb/ acre /yr(
80 lb/ acre /yr 3lb/ acre /y/9I 400 lb/ acre /yr0I HA 6
f III I
Max onsite Distance from 0.9 miles 0.6 miles 0.3 miles 0.75 miles 0.3 miles NA f
drif t CT.
deposition t
yy Wind sector SE NE SE SW SW NA gg deposited in
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TABLE E290.8-1 (SilEET 2 OF 2)
Plant /
Type or Cooling Vogtle/
Susquehenna/
Beave r Va l ley /
Shearon Harris /
Grand Guir/
Tower Na tu ra l Dra f t Na tu ra l Dra f t Na tu ra l D ra f t Na tu ra l Dra f t Na tu ra l D ra f t Unit 1 Unit R 9.9lb/ acre /ybA 5.02 l b/ac re/yr 4 Rate 15 lb/ acre /yr 3 lb/ acre /yr NA Max orrsite Distance from 1.0 miles (0 0.6 miles NA 0.9 miles NA 0.6 miles dri f t cooling tower deposition Wind sector SE SSW NA E
NA E
deposited in i
Humidity 72%
70%
69% '
73.5%
71%
76%
I II Tempe ra tu re 63.4'F 49'F
- 50. 3
- F 'I 49.1*F 60*F 65.5'F 6
IDI I*I IDI I ICI Wind speed in 6.6 miles /hr(b) 8.7 miles /hr 5.6 6.6 8.7 miles /hr 6.4 miles /hr Me teo ro log ica l, p redomina nt miles /hr miles /hr h
conditions, l direction a
annual avg l
'o AFrequency or 12%
14.5%
15.6%(e) 10.5%ggy 10.6%
9.0%
I dominant wind O
LA I
D 'I E-F D-E E *I I
Dominant E
D Pa squ i 1 y
stability I
class O
a.
Design maximum values were used in salt trirt modeling.
b.
Average wind speed in the dominant wira direction is not available, local average wind speed is applied.
The actual wind speed is expected to be higher.
P c.
Wind speed has been adjusted rrom 33 rt to 150 rt by the following equation: V/Vg = (Z/Z3), with Vg = wind speed at a given level, Zg = rererence height, and P = 0.45.
6 d.
Although droplet size distribution for Unit 1 cooling tower was not provided in the environmental repo rt s, it is expected to be similar to that fo r Un i t 2.
e.
Based on the data collected onsite between September 5,1969 to September 5,1970.
f.
Based on the data collected onsite between January 1, 1976 to December 31, 1980.
(5 u n g.
Deposition rate represents the contribution f rom both units, uuu 4
f p ph. The drif t loss used in drift deposition modeling as indicated in the references, i
The peak deposition will occur within 0.3 to 0.9 miles of the cooling tower.
mbw.
J.
Deposition rate represents the contribution f rom four units.
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