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Indicators of possible contamination |
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|  DOE-HDBK-1130-98
Module 9: Radioactive Contamination Control
Instructor's Notes
e.
Another common cause of contamination is sloppy
work practices. These may lead to contamination
of tools, equipment, and workers. Examples
include:
1)
Opening radioactive systems without proper
controls.
2)
Poor housekeeping in contaminated areas.
3)
Excessive motion or movement in areas of
higher contamination.
4)
Improper usage of step-off pads and change
areas.
5)
Violation of contamination control ropes and
f.
Hot particles: Small, sometimes microscopic
pieces of highly radioactive material may escape
containment. These pieces are known as "hot
particles."
1)
Hot particles may be present when
contaminated systems leak or are opened.
These particles may also be present when
machining, cutting, or grinding is performed on
highly radioactive materials.
2)
Hot particles can cause a high, localized
radiation dose in a short period of time if they
remain in contact with skin.
2.
Indicators of possible contamination:
Radiological workers should be aware of potential
radioactive contamination problems. Potential
contamination problems should be reported to the
Radiological Controls Organization. Examples include:
a.
Leaks, spills, or standing water that is possibly
from a radioactive fluid system.
b.
Damaged or leaking radioactive material
containers.
c.
Open radioactive systems with no observable
controls.
88
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