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Part 6. Support Activities


DOE-STD-1098-99
Radiological Control
Radioactive Materials
June 2004
PART 5 Control of Radioactive Liquids and Airborne Radioactivity
451 Minimization and Control of Radioactive Liquid Wastes
DOE 5820.2A provides criteria for minimizing the generation of radioactive liquid waste.
452 Control of Radioactive Drains
Radioactive drain systems are designed to transport radioactive liquids. Improper use may cause an environmental
release.
1.
Radioactive drain systems should not discharge to the environment nor be used for the disposal of non-radioactive
liquids.
2.
Existing radioactive drains should be evaluated to ensure the following:
a.
Verification of the existing radioactive drain piping configuration
b.
Installation of flow-indicating devices in leak-off lines
c.
Use of plugs to prevent non-radioactive input
d.
Consid eration of alternative work controls before systems are drained for maintenance
e.
Controls prohibiting unauthorized use of drains.
3.
Modifications to the design or operation of existing radioactive drain systems should be controlled to include:
a.
Design considerations that prevent non-radioactive drain connections into radioactive drains
b.
Procedural and design controls to prevent cross-connections of radioactive drains with non-radioactive
systems
c.
Management review of subsequent changes to the des ign of radioactive drain systems or radioactive drain
controls
d.
Management controls to restrict the introduction of hazardous wastes into radioactive drain systems.
453 Control of Airborne Radioactivity
1.
The radiological control organization should be notified when engineering controls that prevent worker exposure to
airborne radioactivity, such as barriers, gloveboxes, and glovebags, are compromised. An evaluation should be
made of continuing operations with compromised engineering controls. The use of respiratory protection to
continue activities under these conditions is discouraged. Implementation of short -term engineering modifications
that provide a commensurate level of worker protection is the preferred alternative.
2.
Preventive maintenance and surveillance procedures should be established to ensure equipment controls are
maintained in an operable condition for containment of airborne radioactivity.
4-15


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