Vega SHLM MI4, Руководство по эксплуатации, Страница: 62 / 72

62 48642-US-150527
• Make sure the cable is retracted on applicable source holders.
• Have personnel and equipment, cranes, hoists, and supports available to
remove unit.
• Inform all personnel involved in the removal, of the procedures necessary
to limit radiation exposure. For example, how to reduce exposure using
time, distance, and shielding.
•
Be prepared to handle the weight of the source holder. The approximate
weight of the source holder is on the certified correct drawing.
Specific requirements for removing the source holder include the following:
• Radiation Survey
• Leak Test, if shipping the unit.
• Only a specifically licensed individual can perform the removal.
• The specifically licensed person must use a calibrated survey meter. The
radiation safety officer must be present at the site during the entire
procedure.
The radiation field should conform to the installation survey or less
than 50 mSv/hr (5 mrem/hr) at 30 cm (12") from the surface omni-
directionally.
This information refers to work that should be performed prior to the
removal of a source holder in the United States. Canadian
licensees must have specific wording in their license that allows
installation and removal.
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