ML20207M872
| ML20207M872 | |
| Person / Time | |
|---|---|
| Site: | Portsmouth Gaseous Diffusion Plant |
| Issue date: | 02/17/1999 |
| From: | Mastal E ENERGY, DEPT. OF |
| To: | NRC |
| Shared Package | |
| ML20137B107 | List: |
| References | |
| NUDOCS 9903190237 | |
| Download: ML20207M872 (2) | |
Text
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Department of Energy S
1 Germantown, MD 20874-1290 kg 8
- 776 February 17, 1999 Mr. Robert C. Pierson U.S. Nuclear Re",ulatory Commission Two White Flint North -- MS T8A33 11545 Rockville Pike Rockville, Maryland 20852 United States Enrichment Corporation Portsmouth Gaseous Diffusion Plant Docket No. 70-0002 Review and Approval of Revision to Compliance Plan Issue A.2 INFORMATION TRANSMITTED HEREWITH IS PROTECTED FROM PUBLIC DISCLOSURE AS CONFIDENTIAL COMMERCIAL OR FINANCIAL INFORMATION AND/OR TRADE SECRETS PURSUANT TO 10 CFR 2.790 AND 9.17 (a)(4)
Dear Mr. Pierson:
In its proposed revision, the U.S. Enrichment Corporation (USEC) intends to use statistically based analysis of samples of Russian-origin UF material to satisfy the 30-day receipt 6
measurements. We have discussed the proposed revision with the staff at USEC and the Portsmouth plant in a telephone conference call on December 22,1998. A summary of the discussion is enclosed.
In addition to the statistically based analysis of samples of Russian-origin UF material within 6
30 days of receipt of the 30B cylinders, and as summarized in the enclosure, prior to shipping a
/
30B cylinder to a fuel fabrication facility, USEC will analyze the UF in the IS sample cylinder 6
associated with that 30B cylinder. We understand that this analysis is not needed to satisfy the Nuclear Regulatory Commission NMC&A requirements, but rather is needed to provide MM assurance to fuel fabrication facilities of the purity and contamination levels of the UF in the 6
30B cylinders.
As part of the USEC measurement control program plan, USEC will draw a liquid UF sample 6
from a sufficient number of 30B cylinders so that it can establish and monitor the sampling variance associated with the use of the witnessed 1S sample. As long as USEC withdraws and analyzes a sufficient number ofliquid UF samples from 30B cylinders to maintain a 90 percent 6
confidence of the data obtained from the IS samples, the Highly Enriched Uranium (HEU) 1 Transparency Implementation Program has no concems with the requested change.
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I If you have any questions, please call me at 301-903-3197.
i Sincerely, ds a al, Program Manager HEU Transparency Implementation Program Office ofInternational Nuclear Safety and Cooperation Office of Nonproliferation and National Security, NN-30 Enclosure cc: Steven A. Toelle, USEC, Bethesda Randall M. DeVault, DOE /ORO