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DOE-HDBK-1108-2002
Radiological Training for Accelerator Facilities
Instructor's Guide
Lesson Plan
Notes
4.
Jobs/tasks (Facility-Specific)
Review facility-
specific
Jobs/tasks that may require personnel contamination
information.
monitoring include:
Machining and welding of activated materials.
N
Handling water used to cool accelerator components.
N
Handling sealed sources suspected of leakage.
N
Entering target rooms.
N
Accidental releases.
N
VI.
RADIOACTIVE WASTE ISSUES
A.
Sources of Radioactive Waste
The radioactive waste from an accelerator facility tends to be mostly
machine components or experimental equipment used in or near the
particle beam. These components are often of copper, iron (steel), and
aluminum. Other items or tasks contributing to radioactive waste are:
Shielding blocks (iron, lead, or concrete).
N
Coolant.
N
Maintenance/modifications.
N
Cleaning materials.
N
1.
Shielding blocks (iron, lead, or concrete)
Shielding blocks are quite large and their highest activity is
usually below the surface. Shielding blocks showing several
rad/hr at the surface may have no removable (wipeable)
surface contamination and can be stored without contamination
problems. Whenever possible, shielding blocks should be
stored for reuse where dose is not a problem.
2.
If possible, cooling water should be cleaned and
recirculated/reused. The use of "pure" water minimizes the
radioactivation problems caused by impurities.
29


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