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Module Introduction - hdbk-1130-98_ch10260
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Radiological Worker Training - index
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Entry, Work In, and Exit from High Radiation Areas - hdbk-1130-98_ch10262


DOE-HDBK-1130-98
"CAUTION"
or
"DANGER
HIGH RADIATION AREA"
Additionally the posting may state:
"Personnel Dosimeter, Supplemental Dosimeters,
and RWP Required for Entry"
2.Very High Radiation Area
Very High Radiation Areas will be posted with a standard radiation symbol colored magenta
(or black) on a yellow background, reading:
"GRAVE DANGER,
VERY HIGH RADIATION AREA"
Additionally the posting may state:
"Special Controls Required for Entry"
Some HRAs and VHRAs only exist when machinery is energized, such as radiation
producing devices. For example, a posting could be:
"High Radiation Area When Warning Light is On"
"Controlled Area When Warning Light is Off"
3.
Radiation sources
(Insert facility-specific information on radiation sources that can produce High/Very High
Radiation Areas and the location of each.)
Table 8-1
High and Very High Radiation Area
Definitions and sources (Objectives EO1 and EO2)
Sign
Definition
Sources
Insert HRA sign
> 100 mrem in 1 hour
(Insert facility-specific
sources and locations.)
This is taken at 30 centimeters from the
source of radiation or any surface that the
radiation penetrates.
Insert VHRA sign
> 500 rad in 1 hour
(Insert facility-specific
sources and locations.)
This is taken at 100 centimeters from the
source of radiation, or any surface that the
radiation penetrates.
68


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