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|  DOE-HDBK-1130-98
Module 9: Radioactive Contamination Control
Instructor's Notes
i.
Use standard contamination control procedures as
established by the Radiological Control
Organization.
1)
Do not violate contamination area ropes or
barricades.
2)
Frisk materials out of contamination areas as
directed by site procedures.
3)
Use change areas and step-off pads as
directed.
4)
Do not pass items out of contamination areas
without following site procedures.
5)
Be alert for potential violations to
contamination control procedures.
j.
Ensure ventilation systems are operating as
designed (i.e., no unauthorized modifications).
k.
Radiological workers should always ensure that
the proper entry, exit, and equipment control
procedures are used to avoid the spread of
contamination. Comply with procedures!!
2.
Engineering controls
EO4 Identify methods used
to control radioactive
a.
Ventilation
contamination.
1)
Systems and temporary spot ventilation (e.g.,
temporary enclosures with HEPA filters) are
designed to maintain airflow from areas of
least contamination to areas of most
contamination (e.g., clean to contaminated to
highly contaminated areas).
2)
A slight negative pressure is maintained on
buildings/rooms/enclosures where potential
contamination exists.
3)
High efficiency particulate air (HEPA) filters
HEPA - High Efficiency
are used to remove radioactive particles from
Particulate Air filter.
the air.
91
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