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8 Dismounting
Before you attempt to dismount the source holder, make sure you are aware of
any potentially dangerous process conditions such as extreme temperatures,
high pressure in the vessel, and toxic or corrosive materials.
8.1 De-commission the Source Holder
In many U.S. installations, a VEGA Field Service Engineer de-commissions the
source holder. Only people with a specific license from the U.S. NRC,
Agreement State, or other nuclear regulatory agency may remove the source
holder lock.
Dismount or Removal Requirements
Before you remove the source holder, perform the following steps:
• Conduct a visual inspection of source holder. Make certain the external
surface is smooth and not damaged.
• Check corroded and rusted units, which have been in service under
extreme environmental conditions. These units may require special
removal, handling, and shipping procedures.
• Ensure that the shutter is closed and locked on applicable source holders.
• Have personnel and equipment, cranes, hoists, and supports available to
remove unit.
Users outside the United States must comply with the appropriate
nuclear regulatory agency’s regulations in matters pertaining to
licensing and handling of the equipment.
See the Radiation Safety Manual, and the appropriate current
regulations for details.
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