Information Notice No. 82-24: Water Leaking from Uranium Hexafluoride Overpacks
SSINS No.: 6835
NUCLEAR REGULATORY COMMISSION
OFFICE OF INSPECTION AND ENFORCEMENT
WASHINGTON, D.C. 20555
July 20, 1982
Information Notice No. 82-24: WATER LEAKING FROM URANIUM HEXAFLUORIDE
All NRC licensed enriched uranium fuel fabrication plants.
This notice provides information concerning incidents where water was found
leaking from uranium hexafluoride overpacks during shipment from Department
of Energy (DOE) facilities to NRC uranium hexafluoride processors. This
information should be brought to the attention of all personnel having
operational and safety responsibilities for the shipment, maintenance and
storage of uranium hexafluoride overpacks. It is expected that recipients
will review the information for applicability to their activities. No
specific action or response is required at this time.
Some uranium hexafluoride overpacks are being returned to DOE facilities
without all the bolts installed in the overpack to prevent rain and
condensation water from building up in the overpack during transportation.
Water may also be trapped in the overpack from outside storage without
properly sealing the packaging. This water may leak from the overpack during
transportation through loose bolts, defective seals or rusted through areas.
The leakage of water from overpacks presents no safety hazard to members of
the public, but unfortunately does cause an unreasonable amount of public
concern. On a number of occasions, emergency response teams have responded
to these incidents. This has resulted in delaying shipments already in
progress until the nature of the hazard has been determined by radiation
measurements. These incidents have also resulted in the evacuation of nearby
residents with attendant publicity.
We have asked the DOE not to load uranium hexafluoride cylinders into NRC
licensee overpacks that contain water or are not in good repair.
July 20, 1982
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If you need additional information regarding this subject, you should
contact the Regional Administrator of the appropriate regional office.
L. I. Cobb, Director
Division of Fuel Facilities,
Materials & Safeguards
Technical Contact: D. K. Sly
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