ML20206M677
| ML20206M677 | |
| Person / Time | |
|---|---|
| Issue date: | 05/11/1999 |
| From: | Jim Hickey NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Mazurowski B ENERGY, DEPT. OF |
| Shared Package | |
| ML20206M685 | List: |
| References | |
| REF-PROJ-M-32 NUDOCS 9905170032 | |
| Download: ML20206M677 (4) | |
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- May 11, 1999 Ms. Barbara A. Mazurowski, Director U.S. Department of Energy West Valley Area Office P.O. Box 191 West Valley, NY 14171-0191
Dear Ms. Mazurowski:
The U.S. Nuclear Regulatory Commission's (NRC's) staff and contractor (Center for Nuclear Waste Regulatory Analysis or The Center) has completed its review of the document entitled
" Values of Partition Coefficients and Solubility Used in West Valley EIS Release Models" (NRC32).
Since NRC is authorized to prescribe decommissioning criteria for the West Valley Demonstration Project, and due to the fact that the project facilities will ultimately return to NRC regulation, NRC staff recommends that these comments be considered in any revisions to the Draft EnvironmentalImpact Statement. The Center's comments are enclosed. Staff has the following comments:
The decay and ingrowth of radionuclides should be considered in the estimation of long-term radionuclide releases.
The colloio formation process, and the formation and transport of americium colloids should be analyzed. Only colloid filtration (transport) was addressed. Americium tends to form colloids more readily than plutonium.
Since the fission product niobium-94 could be a key radionuclide for dose assessments at West Valley, niobium should also be considered in the partition coefficient and solubility determinations.
Equation (3) should be validated. It is not clear how metal corrosion increases the radionuclide release rate.
The results in Table 6 should be clarified as to whether they are fractional releases or fractional release rates. Fractional release rates should be given per unit time.
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B. Mazurowski 2 if you have any questions, please contact Jack Parrott at 301-415-6700.
I Sincerely, E k/ f'
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John W. N. Hickey, Chief Decommissioning Branch Division of Waste Management Office of Nuclear Material Safety and Safeguards Project No. M-32
Enclosure:
As stated cc: P. Piciulo, NYSERDA P. Merges, NYSDEC
1 ENCLOSURE I
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