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| DOE-HDBK-1106-97
Radiological Contamination Control Training
for Laboratory Research
Student's Guide
9.
Personnel monitoring: Dosimeter, finger rings - fecal analysis may be used to determine
uptake for weeks or months after handling. Urinalysis is recommended from 4-24 hours
after handling.
ALI:
10.
0.3 mCi (1 x 107 Bq) by inhalation.
o
0.8 mCi (3 x 107 Bq) by ingestion.
o
11.
Shielding: 0.38 inch (9.7 mm) of lead is the first half-value layer.
12.
Special considerations:
o
Near an unshielded Fe-59 source, dose rates from beta radiation can be much higher
than dose rates due to gamma radiation.
o
Avoid direct eye exposure.
o
Avoid skin exposure.
A-18
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