ML20248J537
| ML20248J537 | |
| Person / Time | |
|---|---|
| Site: | Portsmouth Gaseous Diffusion Plant |
| Issue date: | 07/08/1997 |
| From: | Yawar Faraz NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | John Miller UNITED STATES ENRICHMENT CORP. (USEC) |
| References | |
| TAC-L32014, NUDOCS 9707110116 | |
| Download: ML20248J537 (2) | |
Text
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.. 2t UNITED STATES g
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NUCLEAR REGULATORY COMMISSION WASHINGTON. D.C. 20666-0001 i
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July 8,1997
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Mr. James H. Miller i
Vice President, Production U. S. Enrichment Corporation 2 Democracy Center 6903 Rockledge Drive Bethesda, MD 20817
SUBJECT:
PORTSMOUTH CERTIFICATE AMENDMENT REQUEST - INCREASED DOSE FOR HYPOTHETICAL CRITICALITY CASE IN BUILDING X-333 j
(TAC NO. L32014)
Dear Mr. Miller:
This refers to your application dated February 25,1997, requesting an amendment to the Certificate of Compliance for the Portsmouth Gaseous Diffusion Plant, by increasing the calculated dose for a hypothetical criticality case in Building X-333 described in section 4.1.1.2.5 of the Portsmouth Gaseous Diffusion Plant's Safety Analysis Report.
Our review of your application has identified a need for additionalinformation and i
questions that need to be resolved before final action can be taken on your request. It concerns information required for the NRC staff to independently assess the calculated dose. Please provide responses to the following comments.
(
1.
Why did the increase in enrichment in the X-333 cascade result in a change in location of the assessed criticality accident? In pr.nciple, the reason is understood.
l However, a more explicit explanation is needed to show that the closest location was correctly identified.
I 2.
What is the basis for assuming that the criticalities of interest occur in X-33-6 at 40 feet or at X-33-8 at 240 feet?
l 3.
Show all the steps in the calculation of 49 rem in ACR-1.
Please provide the additionalinformation within 30 days of this letter. Please reference the above TAC No. in future correspondence related to this request.
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Mr.' James H. Miller,
If you have any questions regarding this matter, please contact me at (301) 415-8113.
. Sincerely, g 9gned BY Yawar H. Faraz Project Manager Enrichment Section Special Projects Branch Division of Fuel Cycle Safety and Safeguards, NMSS Docket 70-7002
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i cc: Mr. Dale Allen, PORTS Mr. Randy DeVault, DOE Mr. Rob Woolley, USEC DISTRIBUTION: (Control No. 060S)
I Docket 70-7002 NRC File Center ~
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C = COVER E = COVliR & ENCLOSURE N = NO COPY OFFICIAL RECORD COPY j
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