ML20092K243

Requests Approval to Begin Using Dimethylamine Which Will Be Discharged in non-toxic Concentrations.Product Will Be Used in Plant FW Sys in Order to Reduce & Prevent Corrosion Fouling.Chronic Toxicity Study on Pre-Tect 9002 Encl

ML20092K243
Person / Time
Site:	Catawba
Issue date:	09/20/1995
From:	Carter J DUKE POWER CO.
To:	Eleazer T SOUTH CAROLINA, STATE OF
Shared Package
ML20092K250	List: ML20092K243 ML20092K293
References
NUDOCS 9509250294
Download: ML20092K243 (3)

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.: September 20.,1995 *

. Mr. Timothy.M. Eleazer

_ Industrial and' Agricultural Wastewater Division South Caiolina Department of Health .

and Environmental Control 2600 Bull Street Columbia, SC 29201 '

Subject:

Catawba Nuclear Station -NPDES Permit No. SC0004278 '

l Request for Maintenance Chemical Approval l

' File: CN-702.13  ;

Dear Mr. Eleazer:

Catawba Nuclear Station requests approval to begin using Dimethylamine (DMA) which will

,be discharged in non-toxic concentrations. This product will be used in the plants feedwater systems in order to reduce and prevent corrosion fouling.

Dimethylamine has an NOEC concentration of 20 ppm for ceriodaphnia'dubia. The proprietary product to be used (Pre- Tect 9002) has a NOEC concentration of 1000 ppm. The .l product will be used in the system at conce7itration less than the NOEC and will be combined '

with other flows prior to discharging to Lake Wylie via outfall 002. Attached please find a Chronic Toxicity. Study performed on Pre - Tect 9002 as well as an MSDS sheet for the product.

The SCDHEC Industrial Wastewater Division has approved the use of this product for

'Oconee Nuclear Station (See attached approval letter dated June 28,1995). We are requesting a similar approval letter be issued for Catawba Nuclear Station. However, we are requesting ,

that the ' approval letter- reference dimethylamine -(DMA) rather than the proprietary 1 manufactures name in order to have flexibility in selecting different product suppliers without

. seeking additional approval. j

. Should you have any questions concerning this letter please give John Estridge a call at (704)

. 875 5965.

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., Sincerely, nwouo

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JJohn S. Carter, Technical Systems Manager m

Environmental Division, Water Protection ,

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