ML061990607

Final Letter Report for Analytical Results for Fifty-five Water Samples, Batch Five, from the Vicinity of the Dresden Generating Station, Dresden, Illinois (Inspection Report No. 050-00237/2006-007)

ML061990607
Person / Time
Site:	Dresden
Issue date:	07/11/2006
From:	Condra D Oak Ridge Institute for Science & Education
To:	Snell W NRC/RGN-III
References
FOIA/PA-2010-0209, IR-06-007 IR-06-007
Download: ML061990607 (6)

Text

OAK RIDGE INSTITUTE FOR SCIENCE AND EDUCATION July 11,2006 Mr. Wfiam Snell U.S. Nuclear Regulatory Commission Region 111 2443 Warrenville Road Lisle, IL 60532-4351

SUBJECT:

FINAL LETTER REPORT FOR ANALYTICAL RESULTS FOR FIFTY-FIVE WATER SAMPLES, BATCH FIVE, FROM THE VICINITY OF THE DRESDEN GENERATING STATION, DRESDEN, ILLINOIS

[INSPECTION REPORT NO. 050-00237/2006-007] (RFTANO.06-001)

Dear Mr. Snell:

The Oak Ridge Institute for Science and Education (ORISE) received 55 water samples on June 20,2006 which were collected in the vicinityof the Dresden Generating Station in Dresden, I h o i s . The samples were analyzed for tritium. The chaimof-custodyidentified 11 water samples to he analyzed by gamma spectroscopy (GS). The sample identifications and collection data are presented in Table 1. The GS data are presented in Table 2. The tritium data are presented in Table 3. The data for sample D-06-5-03 is qualified due to the lack of sample volume needed for the distiiation procedure. The sample volume, as received, was approximatelythree mL. The peninent procedure references are provided in the specific tables.

ORISE's Quality Control (Qc) requirements were met for these analyses. The ($2 files are available for your review upon request.

My contact information is listed below. You may also contact Wade Ivey at 865.576.9184 with any questions or comments.

Dale Condra, Manager Laboratory RDC:WPI:ess C: B. Watson, NMSS/DWMEP/DD/SP 7E18 E. Abelquist, ORISE E. Knox-Davin, NRG'NMSS/TWFN8A23 S. Kirk ORISE G. Bonano, NRC Region 111 File 1694 I Initials

~~

Distribution approval and concurrence :

Fcshnical M&gcrnent Tt,m Mernbcr y.< n -- -

Voice: 865.241.3242 Fax: 865.241.3248 E - d : CondraD@orau.gov RECEIVED JUL 1 82006

TABLE 1 SAMPLE IDENTIFICATIONS AND COLLECTION DATA DRESDEN GENERATING STATION DRESDEN, ILLINOIS

TABLE 1 (continued)

SAMPLE IDENTIFICATIONS AND COLLECTION DATA DRESDEN GENERATING STATION DRESDEN, ILLINOIS

TABLE 2 CONCENTRATIONS OF SELECTED GAMMA EMITTING RADIONUCLIDES IN SELECTED WATER SAMPLES BY GAMMA SPECTROSCOPY CP1, REVISION 15 DRESDEN GENERATING STATION DRESDEN, ILLINOIS

'?he range of MDO for the selected radionuclides Is 4.7 p W L to 12.0 p W L .

%Jncertaintierrepresent rhe 95% confidence level, bared on total propagated unceminrier.

Dresden Generating Station

TABLE 3 CONCENTRATIONS OF TRITIUM I N WATER SAMPLES BY LIQUID SCINTILLATION ANALYSIS AP2, REVISION 15; CP4, REVISION 3 DRESDEN GENERATING STATION DRESDEN, ILLINOIS 2060

• 170

TABLE 3 (continued)

CONCENTRATIONS OF TRITIUM IN WATER SAMPLES BY LIQUID SCINTILLATION ANALYSIS AP2, REVISION 15; CP4, REVISION 3 DRESDEN GENERATING STATION DRESDEN, ILLINOIS

• hll)Cr arc in parcnthescs.

"Uncertainties rcprereot the 95% coofidencc IcvcI, based on total propagated uncertainties.

"I'hc ccsdcs for this samplc are qualificd due to an insufficient samplc volume needed fur thc distillation pcocedurc.

d.

der" values are due to rounding.

l ~ r c s d c n< ;cncrarinl: Stat,<>" I 'I'nblcs Ihtch prolccrs/1694/13nta 'l~blcs/2llll6.~l7~l ~IIC