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DOE-HDBK-1105-2002
Radiological Training for Tritium Facilities
Student's Guide
Notes
A. Personnel Monitoring
1.
External Dose
Dosimeters are not typically used to
monitor for radiological doses resulting
from tritium. The weak energy beta
radiation will not penetrate the
dosimeter.
insert any site specific monitoring
procedures)
2.
Internal Dose
The best method used to determine if
an individual has an uptake of HTO or
soluble organically bound tritium is by
bioassay (urinalysis). Routine urine
samples, collected at some
predetermined frequency and counted
for the tritium content, provide a very
sensitive measurement of tritium in the
body. This is especially true if the time
of uptake is known.
Air sampling results may be used to
assess dose from other types of special
tritium compounds.
3.
Routine Versus Non-Routine
Bioassay Monitoring
Routine: Routine urinalysis is
a.
conducted on a preset periodic
basis.
b.
Non-routine or Special: Non-
routine bioassay is done whenever
a potential exposure to tritium is
suspected.
(insert site specific bioassay
procedures)
B.
Workplace Monitoring
Air monitoring and surface contamination surveys are
used to verify that loose contamination is not present.
They provide an early indication of potential
problems.
18


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