ML061720095

Orise - Interim Letter Report for Analytical Results for Four of Eight Water Samples, Batch Four, from the Vicinity of the Dresden Generating Station, Dresden, Illinois (Inspection Report No. 050-00237/2006-007) (Rfta No.06-001)

ML061720095
Person / Time
Site:	Dresden
Issue date:	06/16/2006
From:	Condra D Oak Ridge Institute for Science & Education
To:	Snell W NRC/RGN-III
References
FOIA/PA-2010-0209, IR-06-007, RFTA 06-001
Download: ML061720095 (4)

Text

O R I S E OAK RlDQE INSTITUTE FOR SCIENCE AND EDUCATION lune 16,2006 hlr. William Snell U.S. Nuclear Regulatory Commission Region I11 2443 Warrenville Road Lisle, IL 60532-4351

SUBJECT:

INTERIM LETTER REPORT FOR ANALYTICAL RESULTS FOR FOUR OF EIGHT WATER SAMPLES, BATCH FOUR, FROM THE VICINITY OF T H E DRESDEN GENERATING STATION, DRESDEN, ILLINOIS

[INSPECTION REPORT NO. 050-00237/2006-0071 (RFTA NO.06-001)

Dear MI. Snell:

The Oak Ridge Institute for Science and Education (ORISE) received eight water samples on May 31, 2006 which were coUected in the vicinity of the Dresden Generating Station in Dresden, Ihnois. The chain-of-custody identified the one water sample to be analyzed by gamma spectroscopy (GS), four samples to be analyzed for tritium, and four samples to be analyzed for total radiostrontium. The four water samples were analyzed for tritium using a liquid scintillation analyzer at ORISE. The sample identifications and collection data are presented in Table 1. The GS data arc presented in Table 2. The tritium data are presented in Table 3. The pertinent procedure references are provided in the specific tables. The total radiostrontium data will be submitted in the final letter report for hatch four.

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

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

Sincerely, Dale Condra, Manager Laboratory RDC:WPI:ar Ikclosures C: T. McLaughlin, NRC/NMSS/TWFN 7F27 E. Abelquist, ORISE E. Knox-Davin, NRC/NMSS/TWFN 8A23 S. Kirk, ORISE G. Bonano, NRC Region I11 File 1694 Distribution approval and concurrence : I Iqitiab Technical Management Team Member I Dfk.

Quality Manager 1 Voice: 865.241.3242 Fax: 865.241.3248 E - m d CondraD@orau.gov RECEIVED JUN 2 12006

TABLE 1 SAMPLE IDENTIFICATIONS AND COLLECTION DATA DRESDEN GENERATING STATION DRESDEN, ILLINOIS ORISE N R C Region 111 Collection Collection Sample ID Sample ID Date Time D-06-101 05/24/2006 1200 AM 1694W0050 D-06-4-02 05/24/2006 1206 AM 1694WOO51 D-06-4-03 05/24/2006 3:30 PM 1694W0052 D-06-4-04 05/24/2006 3:40 PM 1694W0053 D-06-4-05 05/25/2006 10:20 AM 1694W0054 D-06-4-06 05/25/2006 10:25 AM 1694W0055 0-06-4-07 05/25/2006 11:20 AM 1694W0056 D-06-4-08 05/25/2006 11:25 AM Dresden Generating Station

TABLE 2 CONCENTRATIONS OF SELECTED GAMMA EMITTING RADIONUCLIDES I N A SELECTED WATER SAMPLE BY GAMMA SPECTROSCOPY CP1, REVISION 15 DRESDEN GENERATING STATION DRESDEN, ILLINOIS ORISE NRC Region 111 1694WOO53 D-06-4-05 -3.4 k 3.1b 0.2 ? 2.8 -0.7 k 2.7 3.6 k 6.6 "I'hc cmgc o f MDCs for the selectcd radionuclides is 4.4 pCi/L ro 4.9 pCi/L.

"Uncertaintiusrcpresent the 95% confidence ICYEI, b a d on total propaptcd uncertainties.

projecu/l694/Data Tables/21X)6-06-16 lntenm I h t a 'l'nblcr Hatch I'oui

TABLE 3 CONCENTRATIONS OF TRITIUM IN SELECTED WATER SAMPLES BY LIQUID SCINTILLATION ANALYSIS A P Z , REVISION 15; CP4, REVISION 3 DRESDEN GENERATING STATION DRESDEN, ILLINOIS

'MDC5 arc m parmthebes hUnccrram~r\rrprt5ent thc 95% confidence IEVCI, bawl on total propagated uncrrtaunmes Dresden Generating S t a t i m