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| DOE-STD-1098-99
Radiological Control
Radiological Standards
June 2004
Table 2 -3 Criteria for Posting Radiation Areas
AREA
CRITERIA
REQUIRED
SUPPLEMENTAL
POSTING
POSTING
Radiation levels could
"CAUTION, RADIATION
"RWP AND PERSONNEL
result in an individual
AREA" [see 835.603(a)]
DOSIMETER REQUIRED FOR
Radiation Area
receiving > 0.005 rem
ENTRY"
in 1 hour at 30 cm
Radiation levels could
"CAUTION" or "DANGER,"
"PERSONNEL DOSIMETER,
High
result in an individual
"HIGH RADIATION AREA"
SUPPLEMENTAL
Radiation Area
receiving > 0.1 rem in
[see 835.603(b)]
DOSIMETER, AND RWP
1 hour at 30 cm
REQUIRED FOR ENTRY"*
Radiation levels could
"GRAVE DANGER, VERY
"SPECIAL CONTROLS
Very High
result in an individual
HIGH RADIATION AREA"
REQUIRED FOR ENTRY"*
Radiation Area
receiving > 500 rad in
[see 835.603(c)]
1 hour at 100 cm
* Access requirements may be deleted or modified if personnel access is specifically prohibited.
235 Posting Contamination, High Contamination, and Airborne Radioactivity Areas
1.
Areas shall be posted to alert individuals to the presence (or likely presence) of surface contamination and airborne
radioactivity in accordance with Table 2-4 [see 835.603].
2.
Derived Air Concentration (DAC) values found in 10 CFR 835 shall be used in posting airborne radioactivity areas in
accordance with Table 2-4 [see 835.209(a)].
2-15
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