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|  DOE-HDBK-1106-97
Radiological Contamination Control Training
for Laboratory Research
Instructor's Guide
Instructor's Notes
9.
ALI:
4mCi (1 x 107 Bq) by inhalation, clearance in
o
weeks.
4mCi (1 x 107 Bq) by ingestion.
o
Shielding: inch (1.2 cm) of plexiglass (that will
10.
shield the beta particles and minimize the production
of bremsstrahlung).
P-32 betas will travel:
o
19 feet in air.
o
0.8 cm in tissue.
o
0.7 cm in plexiglass.
o
0.3 cm in aluminum.
11.
Special considerations:
o
A high local dose can be received if the
radioactive material is touched and allowed to
remain in contact with the skin.
o
Do not work over an open container, the eyes
can receive a substantial beta dose.
o
Safety glasses can provide eye protection.
A-10
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