SVPLTR 15-0057, Submittal of 2014 Annual Radiological Environmental Operating Report Supplement

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Submittal of 2014 Annual Radiological Environmental Operating Report Supplement
ML15252A043
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 09/04/2015
From: Marik S
Exelon Generation Co
To:
Document Control Desk, Office of Nuclear Material Safety and Safeguards
References
SVPLTR# 15-0057
Download: ML15252A043 (4)
v • d • e


Text

Dresden Generating Station

~Exe!.on Generation 6500 North Dresden Road Morris, IL 60450 www.exeloncorp.com September 4, 2015 SVPLTR# 15-0057 U. S. Nuclear Regulatory Commission ATTIN: Document Control Desk Washington, DC 20555-0001 Dresden Nuclear Power Station Units 1, 2, and 3 Facility Operation License No. DPR-2 Renewed Facility Operating License Nos. DPR-19 and DPR-25 NRC Docket Nos.50-010, 50-237, and 50-249

Subject:

Dresden Nuclear Power Station 2014 Annual Radiological Environmental Operating Report Supplement

Reference:

Letter From Shane M. Marik to U. S. NRC Titled "Dresden Nuclear Power Station 2014 Annual Radiological Environmental Operating Report," dated May 14, 2015 In the referenced letter, Exelon Generation Company, LLC (EGC) submitted the 2014 Annual Radiological Environmental Operating Report for Dresden Nuclear Power Station (DNPS) Units 1, 2, and 3. The enclosed pages are being submitted to supplement the original report in order to provide information related to a vendor nonconformance report (e.g., NCR 15-12).

Respectfully, Shane M. Mari Site Vice President Dresden Nuclear Power Station

Attachment:

Revised Annual Radiological Environmental Operating Report Pages CC: Regional Administrator - NRC Region Ill NRC Senior Resident - Dresden Nuclear Power Station

  1. v 95

Attachment Revised Annual Radiological Environmental Operating Report Pages

Table 0-t LISTING OF SAMPLE ANOMALIES cnnud Sample Location Collection Reason "Type Code Date WG D-23 08/08/14 The LLDs for 1-131, Ba-140, and La-140 could not be met because Teledyne mistakenly did not analyze the sample for the gamma analysis when received. This error was discovered by Teledyne while assembling the AREOR. Upon discovering the error, the sample was analyzed for gamma. All LLDs with the exception of 1-131, Ba-140 and La-140 were met.

Nonconformance Report (NCR) 15-12 was initiated by the laboratory to address/investigate this error.

AP/l D-01 08/22/14 Low reading of 159 hours0.00184 days <br />0.0442 hours <br />2.628968e-4 weeks <br />6.04995e-5 months <br /> possibly due to work on power lines in the area.

AP/I 0-02 08/22/14 Low reading of 159.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> possibly due to work on power lines in the area.

AP/l D-03 08/22/14 Low reading of 159.8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> possibly due to work on power lines in the area.

AP/l D-04 08/22/14 Low reading of 159 hours0.00184 days <br />0.0442 hours <br />2.628968e-4 weeks <br />6.04995e-5 months <br /> possibly due to work on power lines in the area.

AP/l 0-10 10/24/14 No apparent reason for low reading of 83.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> Table D-2 LISTiNG OF MISSED SAMPLES Sample Location Collection Reason Type Code Date M D-25 01/01/14 - 12/31/14 No sample; farmer sold cows.

Tritium All samples were analyzed for tritium activity (Table C-I1.1, Appendix C). Tritium was detected in eleven of sixteen samples.

The concentrations ranged from 329 to 678 pCi/l. Concentrations detected were consistent with those detected in previous years (Figure C-7, Appendix C).

Gamma Sp~ectrometry All samples were analyzed for gamma emitting nuclides (Table C-11.2, Appendix C). No nuclides were detected and all required LLDs were met with the exception of the August 0-23 sample for nuclides 1-131, 8ta-140, and La-140. This occurred is due to the laboratory not analyzing the sample at time of receipt.

Nonconformance Report (NCR) 15-1 2 was initiated by the laboratory to address/investigate this error.

3. Fish Fish samples comprised of golden redhorse, smallmouth bass, largemouth bass, common carp and freshwater drum were collected at two locations (0-28 and 0-46) semiannually. Location 0-28 could be affected by Dresden's effluent releases. The following analysis was performed:

Gamma__S.2ectrom etnr.

The edible portion of fish samples from both locations was analyzed for gamma emitting nuclides (Table C-1ll. 1, Appendix C).

Naturally occurring K-40 was found at both locations. No fission or activation products were detected.

4. Sediment Aquatic sediment samples were collected at one location (D-27) semiannually. This downstream location could be affected by Dresden's effluent releases. The following analysis was performed:

GamaS ectrometr Sediment samples from the location were analyzed for gamma emitting nuclides (Table C-IV.l1, Appendix C). Cesium-1 37 was detected in both samples. The concentrations ranged from 129 to

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