ML20058H999
| ML20058H999 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 11/14/1990 |
| From: | Lyster M CENTERIOR ENERGY |
| To: | Jackson K OHIO, STATE OF |
| References | |
| PY-CEI-OEPA-011, PY-CEI-OEPA-11, NUDOCS 9011270006 | |
| Download: ML20058H999 (4) | |
Text
, -...
l
~
j 1
e e
PERRY NUCLEAR POWER PLANT Mad Access:
10 CENTER ROAD P 0. BOX 97 Michset D. Lyster P:RRY. OHIO 44081 PERRY. OHIO 44081
%ce Prescent %:: car (216)259 3737 November 14, 1990 PY-CEI/0 EPA-0115 L l
Kim Jackson Ohio Environmental Protection Agency i
Division of Water Pollution Coi.6rol Permits Section P.O. Box 1049 1800 Watermark Drive Columbus, Ohio 43266-0149 Re Perry Nuclear Power Plant NPDES Permit No. 31B00016*CD Cooling Water Additive for One-time Condenser Cleaning
Dear Ms. Jackson:
In accordance with Part II.B of our NPDES Permit (No. 31800016*DC) for the I
Perry Nuclear Power Plant, we request permission to use cooling water treatment additives to assist in the removal of calcium carbonate scale from our main steam condenser during the current refueling outage. Our proposed method is to add 3 Bets Industrial products to the normal volume of water contained in the cooling tower and circulate the water without heat load or blowdown for 3-5 days using the condenser circulating water pumps. Following that, the cooling tower would be. blown down at the normal race. The cooling tower blowdown combines with the untreated service water cooling flows prior to entering state waters. The concentration of Bett products in the discharge would decrease according to an exponential function once blowdown is initiated.' These products and this procedure are o.tly used for cleaning and are not a part of routine daily operation.
Attached are the results of acute static bioassays which demonstrate that use of the additives in the concentrations expected will not be harmful or inimical to aquatic life. The information is provided in accordance with the Ohio. EPA " Reporting and Testing Requirements for Cooling Water System i
Additives."
1 Sincerely, h.&
USNRC Sr. Resident Office Operotmg Units Cipand E+ctne mamohaa 4
Dd0 D0" I
f D
m e
i Attachment PY-CEI/0 EPA-0115 L 1.
Name of additive -
Bet: DE-1579 2.
Expacted concentration i
in cooling tover -
2500mg/L 3.
Expected concentration immediately prior to entering state waters -
L Time (hours) concentration (mg/L) 0 250 24 100 i
48 40 72 16 4.
Flovrate of discharge to state waters -
61.5 NGD 5.
Name of surface water -
Lake Erie 6.
Aquatic toxicity information -
Daphnia Magna -
0% mortality at 10,000mg/L (highest concentration tested)
Rainbov Trout -
0% mortality at 2,500mg/L 100% mortality at 5,000mg/L The above results are in accordance with EPA static bioassay procedures modified so as to maintain the pH at 8.0.
Betz DE-1579 is acidic-(pH 2.5) and vill result in a rainbo" trout LC of 625 mg/L caused by pH depression. The pH of the final ef fluent at Perry hill be controlled within the permit 5
guidelines of 6.0-9.0, so that low pH induced mortality vill not be a problem.
Vith pH control, the expected discharge concentration of 250mg/L is only 10%
of the zero mortality level for rainbow trout, 2.5% of the zero mortality level for Daphnia. As such we feel the product vill have negligible impact on quality of the discharge or the receiving vater.
)
i l
l 1
i Attachment PY-CEI/0 EPA-Oll5 L 1.
Name of additive -
Betz GCP-109 2.
Expected concentration i'
in cooling tover -
10mg/L 3.
Expected concentration immediately prior to entering state waters -
Time (hours)
Concentration (mg/L) 0 1
24 0.4 48 0.15 72 0.05 61.5 MGD 4.
Flovrate of discharge to state vaters 5.
Name of Surface Vater -
Lake Erie 6.
Aquatic Toxicity Information -
Daphnia Magna -
0% mortality at 100mg.'..
100% mortality at 500mg/L Rainbov Trout -
0% mortality at 42mg/L 72 hr. LC50 - 70.0mg/L The expected concentration at the point of discharge is only 1% of the zero mortality concentration for Daphnia and 2.5% of the zero mortality concentration for trout. Consequently, we feel that the product vill have negligible impact on the quality of the discharge or of the receiving vater.
r i
k
Attachment PY-CEI/0 EPA-0115 L 1.
Name of additive -
Betz GCP-127 2.
Expected concentration in cooling tover -
30mg/L 3.
Expected concentration immediately prior to entering state waters -
Time (hours)
Concentration (mg/L) 0 3
24 1.2 48 0.5 72 0.2 4.
Flovrate of discharge to state waters 61.5 MGD 5.
Name of Surface Vater -
Lake Erie 6.
Aquatic Toxicity Information -
Daphnia Magna -
0% mortality at 1000mg/L (highest concentration tested)
Bluegill Sunfish - 0% mortality at 1000mg/L (48 hour5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> screen. No further testing was conducted due to the lov toxicity relative to normal use concentrations)
The expected concentration is only 0.3% of the zero mortality concentration for both Daphnia Magna and Bluegill Sunfish.
Consequently, ve anticipate that the product vill have no significant impact on the character of the affluent or the receiving vater.
NJC/ CODED /4122 l
,