NEI 07-07, Catawba Nuclear Station, Units 1 and 2, 30-Day Report Pursuant to the Groundwater Protection Initiative Concerning Groundwater Monitoring Well 213
| ML073130553 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 11/07/2007 |
| From: | Morris J R Duke Energy Carolinas, Duke Power Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| NEI 07-07 | |
| Download: ML073130553 (5) | |
Text
Duke JAMES R MORRIS WEnergy. Vice President Catawba Nuclear Station 4800 Concord Road / CNOI VP York, SC 29745-9635 803; 31 4251 80 831 3221 fax November 7, 2007 U. S. Nuclear Regulatory Commission ATTENTION:
Document Control Desk Washington, DC 20555-0001
Subject:
Duke Power Company LLC d/b/a Duke Energy Carolinas, LLC Catawba Nuclear Station, Units,1 and 2 Docket Nos. 50-413, 50-414 30-Day Report Pursuant to the Groundwater Protection Initiative Concerning Catawba Nuclear Station Groundwater Monitoring Well 213 Duke Power Company, LLC (Duke) is submitting the attached 30-day Report pursuant to NEI 07-07 (Industry Groundwater Protection Initiative).
A sample obtained from groundwater monitoring well 213 contained tritium levels that triggered the communication protocol of the NEI initiative on groundwater protection on October 8, 2007.There are no regulatory commitments contained in this letter. Any questions concerning this report may be directed to Anthony Jackson at 803-831-3742.
Very truly yours, s R. Morris Attachment www. duke-energy.
corn U.S. Nuclear Regulatory Commission November 7, 2007 Page 2 xc: w/attachments W. D. Travers, Region II Administrator U.S. Nuclear Regulatory Commission Sam Nunn Atlanta Federal Center, 23 T85 61 Forsyth St., SW Atlanta, GA 30303-8931 J. F. Stang, Jr., Senior Project Manager (CNS & MNS)U. S. Nuclear Regulatory Commission 11555 Rockville Pike Mail Stop 8 G9A Rockville, MD 20852-2738 A. T. Sabisch Senior Resident Inspector U. S. Nuclear Regulatory Commission Catawba Nuclear Station S. E. Jenkins, Section Manager Division of Waste Management South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, SC 29201 U.S. Nuclear Regulatory Commission November 7, 2007 Page 3 bxc (with attachments):
R. D. Hart R. L. Gill T.W. Hamilton A. P. Jackson K. E. Nicholson NCMPA-1 NCEMC PMPA SREC Catawba Document Control File: 801.01 -CN04DM Catawba RGC Date File ELL-EC050 ATTACHMENT 30-DAY REPORT PER NEI 07-07, INDUSTRY GROUNDWATER PROTECTION INITIATIVE, CATAWBA NUCLEAR STATION, UNITS 1 AND 2 L This report is being submitted in support of the NEI 07-07 Groundwater Protection Initiative.
This report was generated as a result of the groundwater monitoring results for well 213. These results triggered the communication protocol of the NEI initiative on groundwater protection on October 8, 2007.ii. A sample obtained from groundwater monitoring well 213 contained tritium in a concentration of 42,335 pico curies per liter (pCi/I).iii. On October 8, 2007 Duke analyzed a sample obtained from groundwater monitoring well 213. The sample contained tritium levels that triggered the communication protocol of the NEI initiative on groundwater protection on October 8, 2007. On Tuesday October 9, 2007, Duke verbally advised the NRC and appropriate agencies of an on-site environmental monitoring well sample result of 42,335 Pico curies per liter of tritium.Since October 9, 2007 for plant structures, systems, and components in proximity of well 213, Duke has (1) performed a visual inspection of nearby plant trenches and in-trench piping; (2) performed hydrostatic testing of piping that could not be visually verified; and (3) implemented design reviews of sump pumping systems and drainage systems. In each of these instances, no active or intermittent source of leakage was detected.Existing hydro-geologic model indicates that the flow of the groundwater at and around well 213 is in the direction of the plant turbine building.
CNS has procured an independent expert opinion which arrived at the same conclusion.
Duke has contracted with a vendor to develop a 3-dimensional hydrology model with a time variable to better quantify the underground transport times.Four additional groundwater monitoring wells have been drilled. Two additional wells are planned. These wells are located in strategic proximity to the 213 well and were located to obtain more detailed information regarding the potential migration of the groundwater in question.
Results Page 1 of 2
.0 from samples that will be obtained from these well locations are expected by mid-November.
iv. The well displaying activity is a groundwater monitoring well and not a drinking water well. Other groundwater monitoring wells which bound this well do not indicate that the groundwater from this location has migrated to the site boundary.
Rather the migration path is in the direction of the plant turbine building.
Therefore there is no public exposure pathway and Duke determined that there is no estimated annual dose to any member of the public associated with this event.v. Since there is no estimated annual dose to a member of the public from this event, no corrective actions are necessary to reduce the projected annual dose to a member of the public to less than the limits of 10 CFR 50 Appendix Page 2 of 2