Design Considerations cont'd

DOE-HDBK-1132-99

Provisions should be made for the continuous monitoring and recording

of radioactivity, flow volume, pH, and other parameters required for

material control and proper waste treatment operations while each

volume of industrial waste is being received by an on-site treatment plant.

This monitoring allows optimum control of waste treatment operations and

helps prevent unintended off-site releases.

Liquid process wastes containing radioactive or other hazardous material

should be collected and monitored near the source of generation before

batch transfer through appropriate pipelines or tank transfer to a liquid

waste treatment plant or area. Radiation, liquid level, or conductivity

detectors should be provided in collection systems. Monitoring not only

provides information useful for planning efficient waste treatment

operations, but also can serve as an indicator of unintended fluctuations

in process operations.

The airborne radioactive waste sources typically associated with RLWFs

and RSWFs that should be considered during the design include but are

not limited to radioactive liquid waste process vessel vents, high-level

liquid radioactive waste collection and storage tank vents, airborne

effluents from process system vents, and fission product gases. Effluent

system designs should preclude the holdup or collection of fissile material

or other material capable of sustaining a chain reaction in portions of the

system that are not geometrically favorable. Nuclear criticality safety

should be considered in the design of airborne effluent systems.

Provisions should be made to handle combustible gasses generated

during waste handling and/or storage.

Consideration should be given to condensation and deposition of

aerosols formed in vent lines.

I-76