A generic mixing system for achieving conditions suitable for single point representative effluent air sampling
Journal Article
·
· Health Physics
- Texas A and M Univ., College Station, TX (United States). Dept. of Mechanical Engineering
- Radian International, LLC, Golden, CO (United States)
The US EPA has approved Alternate Reference Methodologies for sampling radionuclide aerosol particles from stacks and ducts of US DOE facilities. The approach allows use of single point sampling with shrouded probes from locations where both fluid momentum and contaminant concentration are well mixed across the flow cross section. For existing stacks and ducts that do not have locations where there is adequate mixing, the authors have developed a generic mixing system that will generate conditions suitable for single point sampling. The coefficients of variation of the velocity, tracer gas, and 10 {micro}m aerodynamic diameter aerosol particles profiles are all less than 10%, which are well within the EPA limit of 10%. Mixing is affected neither by size of the system nor by flow rate, provided the flow is turbulent.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 318654
- Journal Information:
- Health Physics, Journal Name: Health Physics Journal Issue: 1 Vol. 76; ISSN HLTPAO; ISSN 0017-9078
- Country of Publication:
- United States
- Language:
- English
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