BSEP 07-0100, Supplement to Radioactive Effluent Release Report for 2006

Supplement to Radioactive Effluent Release Report for 2006

ML072910352
Person / Time
Site:	Brunswick
Issue date:	10/01/2007
From:	Ivey R Progress Energy Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
BSEP 07-0100
Download: ML072910352 (5)

Text

Progress Energy OCT 0 121107 Serial: BSEP 07-0100 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC -20555-0001

Subject:

Brunswick Steam Electric Plant, Unit Nos. 1 and 2 Docket Nos. 50-325 and 50-324/License Nos. DPR-71 and DPR-62 Supplement to Radioactive Effluent Release Report for 2006

Reference:

Letter from Randy C. Ivey to the U.S. Nuclear Regulatory Commission (Serial: BSEP 07-0036), "Radioactive Effluent Release Report for 2006,"

dated April 30, 2007 (ADAMS Accession Numbers MNL071240277 and ML071240280)

Ladies and Gentlemen:

On April 30, 2007, Carolina Power & Light Company, now doing business as Progress Energy Carilinas,'Inc:, submitted the 2006 Radioactive Effluent Release Report for the Brunswick Steam Electric Plant (BSEP), Unit Nos. 1 and 2. Subsequently, it was determined that the 2006 ground water sampling data was not included in the report as required by the Nuclear Energy Institute (NEI) Voluntary Interim Guidance for the Ground Water Protection Initiative. The omitted information is enclosed.

No regulatory commitments are contained in this submittal. Please refer any questions regarding this submittal to Ms. Annette H. Pope, Supervisor - Licensing/Regulatory Programs, at (910) 457-2184.

Sincerely, Randy C. Ivey Manager - Support Services Brunswick Steam Electric Plant MAT/mat

Enclosure:

2006 Ground Water Sample Data Progress Energy Carolinas, Inc.

Brunswick Nuclear Plant PO Box 10429 Southport, NC 28461

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Document Control Desk BSEP 07-0100 / Page 2 cc (with enclosure):

U. S. Nuclear Regulatory Commission, Region II ATTN: Dr. William D. Tiavers, Regional Administrator Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW, Suite 23T85 Atlanta, GA 30303-8931 U. S. Nuclear Regulatory Commission ATTN: Mr. Joseph D. Austin, NRC Senior Resident Inspector 8470 River Road Southport, NC 28461-8869 U. S. Nuclear Regulatory Commission (Electronic Copy Only)

ATTN: Mr. Stewart N. Bailey (Mail Stop OWFN 8B 1) 11555 Rockville Pike Rockville, MD 20852-2738 Chair - North Carolina Utilities Commission P.O. Box 29510 Raleigh, NC 27626-05 10

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BSEP 07-0100 Enclosure Page 1 of 3 2006 Ground Water Sample Data

Background

On April 30, 2007, Carolina Power & Light Company, now doing business as Progress Energy Carolinas, Inc., submitted the 2006 Radioactive Effluent Release Report for the Brunswick Steam Electric Plant (BSEP), Unit Nos. 1 and 2. Subseqouently, it was determined that the 2006 ground water sampling data was not included in the report as required by the Nuclear Energy Institute (NEI) Voluntary Interim Guidance for the Ground Water Protection Initiative.

The omitted information follows.

Well Locations Well locations were determined based on hydro-geologic factors and known historical leaks or spills. Figure 1 provides a map detailing the location of monitoring wells.

Ground Water Ground water samples are collected on site at BSEP for tritiuin analysis. Gamma analyses are performed when positive indication of tritium is found to be present in the ground water. Results of ground water samples are included in Table 1. There was no detectable gamma activity identified in the 2006 ground water samples.

Tritium activity identified in monitoring wells ESS-2C and ESS-16 is due to a historical leak that occurred in the radwaste discharge lines in the 1990s. The lines have since been repaired and are monitored for leakage approximately every two years. These wells are sampled and analyzed on at least a quarterly basis to monitor the existing tritium plume.

In response to the Nuclear Energy Institute (NEI) Ground Water Protection Initiative, BSEP lowered the Lower Limit of Detection (LLD) for tritium from 2500 pCi/L to approximately 325 pCi/L. The first samples analyzed to the new LLD were obtained in October 2006. When counted to the new LLD, tritium activity was identified in monitoring wells ESS-3B and ESS-3C. These tritium levels in these wells are significantly below the reporting limit of 30,000 pCi/L. Wells ESS-3B and ESS-3C have been included in the BSEP Radiological Groundwater Monitoring Program. They are sampled and analyzed quarterly to ensure that required reporting levels have not been exceeded, and to compare the new data to past results with the goal of detecting potential or actual trends. Additionally, BSEP has begun efforts to perform a site hydrology study. This study will provide a conceptual model of the overal- hydrological characteristics of the site. Once complete, this model will be used to attempt to determine the source of the tritium activity in wells ESS-3B and ESS-3C.

1 BSEP 07-0100 Enclosure Page 2 of 3 Table 1

.2006 Groufi4*.Water s ami~lles Well-Number Sample Date& 'Tritium Activity, pCI/*I ESS-2C 4/11/06 1,328,000 ESS-16 4/11/06 13,760 ESS-1B 4/11/06 <LLD ESS-2B 4/11/06 <LLD ESS-3B 4/11/06 <LLD ESS-13C 4/11/06 <LLD ESS-17 4/11/06 <LLD MW-2 4/11/06 <LLD MW-3 4/11/06 <LLD ESS-2C 8/25/06 1,555,000 ESS-16 8/25/06 8,235 ESS-2C 9/14/06 1,416,000 ESS-16 9/14/06 17,710 ESS-1B 9/14/06 <LLD ESS-2B 9/14/06 <LLD ESS-3B 9/14/06 <LLD ESS-13C 9/14/06 <LLD ESS-17 9/14/06 <LLD MW-2 9/14/06 <LLD MW-3 9/14/06 <LLD ESS-3B 10/12/06 1,170 ESS-3C 10/12/06 344 ESS-2C 12/15/06 1,360,000 ESS-16 12/15/06 65,700 ESS-3B 12/15/06 1,250

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