ML12034A153

Biocide/Corrosion Treatment Plan (B/Ctp) Annual Report - NPDES Permit No. TN0026450

ML12034A153
Person / Time
Site:	Sequoyah
Issue date:	02/01/2012
From:	John Carlin Tennessee Valley Authority
To:	Office of Nuclear Reactor Regulation, State of TN, Dept of Environment & Conservation, Div of Water Pollution Control
References
TN0026450
Download: ML12034A153 (6)

Text

Tennessee Valley Authority., Post Office Box 2000, Soddy Daisy, Tennessee 37384-2000 February 1, 2012 State of Tennessee Department of Environment and Conservation Division of Water Pollution Control Enforcement & Compliance Section 6 th Floor, L & C Annex 401 Church Street Nashville, Tennessee 37243-1534

Dear Mr. Patrick Cromer:

SEQUOYAH NUCLEAR PLANT (SQN) - 2011 BIOCIDE/CORROSION TREATMENT PLAN (B/CTP) ANNUAL REPORT - NPDES PERMIT NO. TN0026450 In accordance with Part IV.B. of NPDES Permit No. TN0026450, SQN developed a B/CTP that was approved by the Division of Water Pollution Control on April 27, 2005 for the specific and limited application of oxidizing biocides, non-oxidizing biocides, dispersants, surfactants, corrosion inhibiting chemicals, and detoxification chemicals at SQN. The use of these chemicals is necessary to ensure the safe operation of the facility.

The B/CTP approval requires that "annually, a report shall be submitted to the Division presenting the biomonitoring data for tests conducted during treatments, a summary of all analytical results (daily maximum, daily average, number of samples), the approximate duration in hours of each chemical used, quantity in pounds of each chemical used, and any minor changes that have occurred to the plan. The report shall be submitted to the Enforcement and Compliance Section in Nashville and to the Chattanooga Environmental Field Office by February 15 of the year following the reporting year."

In a letter dated February 14, 2011, Mr. Vojin Janji6 "provides division approval of the mass balance method for reporting of effluent concentrations for cooling water treatment chemicals. This approval is based on TVA's letter of 31 January 2011 which provided a favorable comparison of this method with the methylene chloride extraction method."

If you have any questions or need additional information, please contact Brad Love at (423) 843-6714 or by e-mail at bmlove@tva.gov of Sequoyah's Environmental staff.

&Q$Dl

/ certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.

Since Iy C

in SiteVi ue esident Sequ Nuclear Plant Enclosures cc (Enclosures):

Mr. Vojin Janji6 State of Tennessee Dept. of Environment and Conservation Division of Water Pollution Control 6 th Floor, L & C Annex 401 Church Street Nashville, Tennessee 37243-1534 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Chattanooga Environmental Field Office Division of Water Pollution Control State Office Building, Suite 550 540 McCallie Avenue Chattanooga, Tennessee 37402-2013

TN0026450 SQN 2011 Biocide/Corrosion Treatment Plan Annual Report Towerbrom 960 Quantity in Pounds (lbslday)

Duration in Hours (hrs/day)

Maximum Analytical Results mass balance calculation (mg/L)

1. of Maximum Average Limit samples Month Maximum Average (based on days in service)

Limit Days in Service January February March April May June July August September October November December Jan. - Dec.

200 190 180 660 670 330 350 340 350 370 710 250 110 140 103 418 219 154 211 155 230 216 401 205 1425 1425 1425 1425 1425 1425 1425 1425 1425 1425 1425 1425 4.50 4.08 5.75 24.00 13.00 7.50 16.67 14.17 12.50 15.75 24.00 5.08 0.038 0.042 0.024 0.026 0.046 0.037 0.058 0.025 0.037 0.038 0.029 0.039 0.019 0.026 0.011 0.017 0.023 0.024 0.024 0.014 0.027 0.021 0.020 0.025 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 10 11 16 28 21 37 25 30 25 19 29 10 261 10 11 15 25 15 26 23 28 24 18 29 10 234 Per the B/CTP approval: "Whole Effluent toxicity testing (biomonitoring) of Ouffall 101 and Outall 110 shall be undertaken once per year when oxidizing biocides are being used."

Outfall 101: Toxicity was sampled November 6 - 11, 2011.

Test Results: Pimephales promelas: IC25 >100%

Ceriodaphnia dubia: IC25 > 100%

Outfall 110: There has been no discharge from Outfall 110 January - December 2011.

TN0026450 SQN 2011 Biocide/Corrosion Treatment Plan Annual Report Spectrus CT1300 Quantity in Pounds (lbs/day)

Maximum Averaqe Limit Duration in Hours (hrs/day)

Analytical Results mass balance calculations (mgIL)

1. of Maximum Averaae Limit SamDles Days in Service Month IMaximum

4.

I 4*

4.

January February March April May June July August September October November December Jan. - Dec.

531 520 310 303 483 248 483 302 302 288 228 307 248 295 855 855 855 855 855 855 855 24.00 24.00 14.00 14.67 24.00 11.18 24.00 0.039 0.039 0.038 0.038 0.038 0.037 0.038 0.039 0.032 0.038 0.030 0.036 0.037 0.036 0.05 0.05 0.05 0.05 0.05 0.05 0.05 4

8 2

4 6

1 7

0 0

0 4

8 2

4 6

1 7

0 0

32 32 Per the BICTP approval: "Whole Effluent toxicity testing (biomonitoring) of Outfall 101 and Outall 110 shall be undertaken once per year when non-oxidizing biocides are being used."

Outfall 101: Toxicity was sampled May 1 - 6, 2011 during the Spectrus CT1 300 treatment.

Test Results: Pimephales promelas: 1C25 >100%

Ceriodaphnia dubia: IC25 > 100%

Outfall 110: There has been no discharge from Outfall 110 January - December 2011.

TN0026450 SQN 2011 Biocide/Corrosion Treatment Plan Annual Report Flogard MS6236 Quantity in Pounds (lbs/day)

Maximum Average.

Limit Duration in Hours (hrs/day)

Maximum Analytical Results mass balance calculations (mg/L)

1. of Days in Maximum Average Limit samples I Service Month January February March April May June July August September October November December Jan. - Dec.

835 835 835 835 835 835 528 589 623 658 678 672 2275 2275 2275 2275 2275 2275 24.00 24.00 24.00 24.00 24.00 24.00 0.110 0.062 0.110 0.074 0.059 0.044 0.059 0.053 0.066 0.058 0.059 0.055 0.2 0.2 0.2 0.2 0.2 0.2 12 30 29 31 30 30 0

0 0

0 12 30 29 31 30 30 0

0 162 162 Per the B/CTP approval: "Flogard MS6236 is injected into the ERCW Train A & B system only during warm weather months."

TN0026450 SQN 2011 Biocide/Corrosion Treatment Plan Annual Report Biodetergent 73551 Quantity in Pounds Duration in Hours Analytical Results (lbs/day)

(hrs/day)*

mass balance calculations (mg/L)

1. of Days in Month Maximum Average Limit Maximum Limit Maximum Average Limit samples Service January February 17 11 50 0.5 0.5 0.020 0.020 2.0 7

7 March 17 11 50 0.5 0.5 0.020 0.020 2.0 8

8 April 0

May 0

June 9

9 50 0.5 0.5 0.060 0.044 2.0 8

8 July 26 21 50 0.5 0.5 0.029 0.026 2.0 9

9 August 26 17 50 0.5 0.5 0.029 0.029 2.0 11 11 September 26 26 50 0.5 0.5 0.033 0.032 2.0 8

8 October 26 14 50 0.5 0.5 0.029 0.029 2.0 6

6 November 0

December 0

Jan. - Dec.

57 57

• Treatment durations shall not exceed 30 minutes at 2-3 times per week into ERCW Train A, ERCW Train B, and RCW systems.

Per the B/CTP approval: "Frequency of use would be appoximately 208 days per year and duration of use would be about 0.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> per day with a maximum daily usage of 50 lbs/day for all three-injection points."