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| DOE-HDBK-1130-98
Module 6: Radiological Access Controls and Postings
Instructor's Notes
b.
General requirements:
EO6 Identify the minimum
or recommended
1)
An Underground Radioactive Materials Area may be
requirements for entering,
exempt from the general entry and exit requirements
working in, and exiting
if individual doses do not exceed 100 mrem in a year.
Underground Radioactive
Material Areas.
2)
Contact the Radiological Control Organization prior
to entry.
c.
(Insert facility-specific information.)
D. Areas a RW I Trained Person May Not Enter
1.
High Radiation Areas (HRAs)
HRA is any area accessible to individuals in which
radiation levels could result in an individual
receiving a deep dose equivalent in excess of 100
mrem/hr at 30 centimeters from the source.
a.
Posting Requirements:
"CAUTION or DANGER, HIGH RADIATION
AREA"
Additionally, the posting may state:
Show sign.
"Personnel Dosimetry Required for Entry"
b.
Unescorted entry into this area requires appropriate
training, such as RW II or RW I with the High
Radiation Area training module.
2.
Very High Radiation Areas (VHRs)
A VHR is any area accessible to individuals in which
radiation levels could result in an individual
receiving an absorbed dose in excess of 500 rad/hr at
1 meter from the source of radiation.
a.
Posting Requirements:
"GRAVE DANGER, VERY HIGH RADIATION
Show sign.
AREA"
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