ML20199J744
| ML20199J744 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 02/02/1998 |
| From: | Marissa Bailey NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Mccollum W DUKE POWER CO. |
| References | |
| IEB-96-004, IEB-96-4, NUDOCS 9802060028 | |
| Download: ML20199J744 (3) | |
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NUCLEAR REGULATORY COMMISSION
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February 2, 1998 Mr. W. R. McCollum, Jr.
Vice President Duke Power Company Oconee Nuclear Site P. O. Box 1439 Seneca, South Carolina 27679
SUBJECT:
ACCEPTANCE OF DUKE POWER COMPANY'S RESPONSE TO NUCLEAR REGULATORY COMMISSION BULLETIN 96-04
Dear Mr. McCollum:
On August 19,1996, as supplemented November 3 and Cecember 31,1997, Duke Power Company responded to Nuclear Regulatory Commission Butletin 96-04 for the NUHOMG 24P spent fuel storage system used at the Oconee Nuclear Site. Th!s is, to inform you that NRC reviewed your response and found it acceptable.
In your response, you incorporated and concurred with the bulletin response from VECTRA Technologies, Inc. (now Transnuclear West, Inc.). On Decomber 5,1997, NRC informed you that it had accepted VECTRA's response and issued a safety evaluation (dated November 17, 1997). As discussed in the safety evaluation, hydrogen could be generated in the NUHOMS 24P due to the corrosion of the flame sprayed aluminum coating in borated water.
Consequently, VECTRA recommended setting a safe upper limit of 2.4% hydrogen by volume for the hydrogen concentration in the dry shielded canister (DSC) during welding c: cutting operations. The staff accepted this recommendation and further concluded that DSCs with flame-sprayed aluminum should be monitored continuously for hydrogen during welding or cutting.
Accordingly, in your December 31,1997, submittal, you agreed to revise the cask loading and unloading procedures to include continuous monitoring of the DSC vapor space during welding, grinding, or cutting of DSCs with flame-sprayed aluminum. In your November 3,1997, submittal, you also agreed to revise the procedures to include VECTRA's recommended safety limit of 2.4% hydrogen by volume. NRC's understanding is that you will complete these procedure changes before loading or unloading any DSCs in the future. Please note that the cask loading and unloading procedures at Oconee may be the subject of a future NRC inspection.
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Mr. W.R. McCollum, Jr.
2-If you have any questions regarding this matter, you may contact me at (301) 415-8531 or Timothy McGint/ at (301) 415-8580.
Sincerely,
[originalsignedby/s/]
Marissa G. Bailey, Project Manager Spent Fuel Licensing Section Spent Fuel Project Office Office of Nuclear Material bafety and Safeguards Dockets 72-4,50-260/270/287 cc: Service List Distribution:
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Ocones Nuclear Station Units 1,2, and 3 CC:
Mr. Paul R. Newton Mr. J. E. Burchfield, Jr.
1 Legal Departmont (PBOSE)
Compliance Manager i
Duke Power Company Duke Power Company 422 South Church Street Oconee Nuclear Site Charlotte, North Carolina 28242-0001 P. O. Box 1439 Seneca, South Carolina 20679 J. Michael McCarry, Ill, Esquire Winston and Strawn Ms. Karen E. Long 1400 L Street, NW.
Assistant Attorney General Washington, DC 20005 North Carolina Department of Justice Mr. Robert B. Borsum P. O. Box 629 Framatome Technologies Raleigh, North Carolina 27602 Suite 525 1700 Rockville Pike L. A. Keller Rockville, Maryland 20852 1631 Manager Nuclear Regulatory Licensing Manager, LIS Duke Power Company NUS Corporation 526 South Church Street 2050 McCormick Drive,3rd Floor Charlotte, North Carolina 28242-0001 Clearwater, Florida 34619-1035 Senior Resident inspector U. S. Nuclear Regulatory Commission 7812B Rochester Highway Seneca, South Carolina 29672 Regional Administrator, Region ll U. S. Nuclear Regulatory Commission Atlanta Federal Center 61 Forsyth St. SW, Suite 23T85 Atlanta, Georgia 30303 Max Batavia, Chief Bureau of Radiological Health South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201 County Supervisor of Oconee County Walhalla, South Carolina 29621 Mr. Richard M. Fry, Director Division of Radiation Protection North Carolina Department of Environment, Health and Natural Resources 3825 Barrett Drive Raleigh, North Carolina 27609 7721 i