ML061160481
| ML061160481 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 12/20/2005 |
| From: | Entergy Nuclear Operations |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| FOIA/PA-2006-0081 | |
| Download: ML061160481 (2) | |
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intormation in)this record was deieted inaccordance the d of10 WW A~=1 December 20O. 2005 Entergy Obtains Results from Transformer Yard Monitoring Wells Entergy has expanded the ground water sampling program at Indian Point to include news wells and testing of existing storm drain systems. The expanded testing program is in response to the identification of a small hairline crack on the outside wall of the IP2 spent fuel pool found during excavation in the fuel storage building loading bay.
Over the past several weeks three new wells have been drilled in the IP2
- New monitoringwell installed transformer yard near an existing well (MW-Ill) which showed tritium in the1lP2 transformeryard. concentrations (250,000 pCi/L) about an order of magnitude above EPA drinking water standards (20,000 pCi/L). Tests results from these wells
'"I'"' ; 'D"F are shown in the table below:
I:.
Well I Sample Date Locaion I Tritium MW-34 12/13/2005 Transfrmer YardJ 63,900 pCUI MW-35 12/13/2005 Transforme.ar~J 42,300 pCUI MW-33 12/15/2005 ITransformer Yr 142.000 pCUli E
See attachedmapfor locations These results are above drinking water standards but below the levels found in MW-1 11. No other isotopes characteristic of spent fuel pool water was found in any of these sample results. These wells are test wells Dillrigbeing.usedioinstall and are not part of any drinking water system and do not pose a threat to monitoring wel er ul trage, workers or the general public. These wells will continue to be sampled as
.. ... uild.g results can vary due to environmental conditions especially rainfall, at the time the sample is drawn.
lE!UlLO'NC W51e 9-2 Storm Water Drains Now Included in Test Program v l ~AnI:JAr<Yi*-
- In order to develop a comprehensive data set that will lead to a conceptual model of ground water movement on site, samples for tritium were taken from the storm drains in and adjacent to the transformer yard.
Test results showed detectable levels for tritium in the storm drains ranging from less than 2000 pCi/L in sample locations 17, 18 and 19 to a high of between 12,000 and 51,000 pCi/L at sample location MHI-6 near monitoring well MW- 11. The remaining wells tested between 2000 and 5300 pCi/L. Storm drains at Indian Point flow into the discharge canal.
t77, i,$c77 Discharges from the canal are monitored as part of the Radiological Environmental Monitoring Program, which is reported to the Nuclear Regulatory Commission. Sample results from these storm drain systems Coseup. of area map showing will be incorporated into the broader monitoring program.
iransfqrmer yard wells andstorm drains. GreenMines are storm drains.
Liner Inspection First Test Results from Entergy, NRC, NYS Split The video inspection of Unit Samples 2's spent fuel pool stainless steel liner has revealed three As monitoring wells are being developed, Entergy, New York State and additional areas where' the NRC are taking split samples, which are analyzed for tritium, gamma potential defects will be emitters and Sr-90. Entergy's samples are sent to an EPA qualified lab at examined. Tile potential FitzPatrick for analysis where highly sensitive analyeis can be performed defects are located on the at lower limits of detection. A split sample taken from MW-38, a new north and west wall of the spent fuel pcol. Two of the well installed near the IP3 turbine building at the south end of the site, areas appear to be pinholes has shown trace amounts of tritium (980 pCi/L). Two previous samples and the third appears to be'a analyzed at Indian Point showed no detectable activity. Fitzpatrick's small gash in the liner. more sensitive equipment has a Lower Limit of Detection at 500 pCi/L verses the LLD for IPEC of 1000 pCi/L. The New York State sample was tested at the Department of Health's Wadsworth Lab in Albany. Their These areas have been sample was generally consistent with Entergy's showing about 700 surveyed for radiation levels and will be vacuum box pCi/L. The NRC is using the national lab at Oak Ridge. Samples results tested for through wall leaks from the NRC should be available in a couple of weeks. No isotopes similar to three,areas in the other than tritium were found in the samples.
cask loading' area of the pool.
Off-Site Samples Show No Tritium Entergy has sampled nearby wells, drinking water supplies and outfalls.
No tritium or other radionuclides have been found in any off-site location. Split samples among Entergy, NYS and NRC were taken at many of these locations.
Date Location ' Tritium Results 10/18/05 Croton Reservoir None Detectable Camp Field Reservoir 10/20/05 Gypsum None Detectable Algonquin 5th Street Well iIN 10/25/05 1118/05 11/30/05 Rock Quarry 5t Street Well Gypsum None Detectable None Detectable None Detectable Algonquin 5th Street Well Rock Quarry Croton Reservoir Camp Field Reservoir