Conduct of Radiological Work
337 Controlling the Spread of Contamination
Controls shall be implemented as necessary to prevent the spread of removable contamination outside of radiological
areas under normal operating conditions [see 835.1102(a)]. The extent of these controls is dependent upon the type and
level of contamination present and the activities in and around the area. The following measures should be used to
prevent the spread of contamination across the boundaries of contamination, high contamination, and airborne
Use solid barriers to enclose areas wherever practicable
Mark and secure items such as hoses and cords that cross the boundary to prevent safety hazards and the spread of
contamination. Markings may include radiological hazard warning labels, ribbon, or tape.
Control and direct airflow from areas of lesser to greater removable contamination or airborne radioactivity
Use engineering controls and containment devices such as glovebags, gloveboxes, and tents.
338 Monitoring for Personnel Contamination
Individuals shall be monitored as appropriate for the presence of surface contamination when exiting
contamination, high contamination, and airborne radioactivity areas [see 835.1102(d)]. Individuals should perform
a whole body frisk immediately upon entry into an uncontaminated area after exiting contamination, high
contamination, or airborne radioactivity areas. Individuals should also perform a whole body frisk as directed by
the RWP or the radiological control organization.
In addition to the above, individuals exiting a radiological buffer area containing contamination, high
contamination, or airborne radioactivity areas should, at a minimum, perform a hand and foot frisk. This frisk is
optional if the radiological buffer area exit is immediately adjacent to the location where the exiting individual has
already performed a whole body frisk.
Where frisking cannot be performed at the exit from contamination, high contamination, or airborne radioactivity
areas due to high background radiation levels, individuals should:
Remove all protective equipment and clothing at the exit
Proceed directly to the nearest designated monitoring station
Conduct a whole body frisk.
Personnel frisking should be performed after removal of protective clothing and prior to washing or showering.
Guidelines for personnel frisking are provided in Appendix 3D.
Personal items, such as notebooks, papers, and flashlights, may be frisked by the individual carrying them, provided
the individual has been trained to perform this function.
Instructions for personnel frisking should be posted adjacent to personnel frisking instruments or monitors.
The personnel frisking provisions in this Article are not applicable at those facilities that contain only radionuclides,
such as tritium, that cannot be detected by currently available hand-held or automated frisking instrumentation. At
such facilities, additional emphasis should be placed on bioassay programs and routine area contamination survey
and air sampling programs.