Back to Search
Start Over
A generic mixing system for achieving conditions suitable for single point representative effluent air sampling.
- Source :
-
Health physics [Health Phys] 1999 Jan; Vol. 76 (1), pp. 17-26. - Publication Year :
- 1999
-
Abstract
- The U.S. EPA has approved Alternate Reference Methodologies for sampling radionuclide aerosol particles from stacks and ducts of U.S. 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, we 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 microm aerodynamic diameter aerosol particles profiles are all less than 10%, which are well within the EPA limit of 20%. Mixing is affected neither by size of the system nor by flow rate, provided the flow is turbulent.
- Subjects :
- Air Pollution, Radioactive statistics & numerical data
Government Agencies
Radiation Monitoring instrumentation
Radiation Monitoring methods
Reference Standards
Reproducibility of Results
Selection Bias
United States
United States Environmental Protection Agency
Air Pollution, Radioactive analysis
Radiation Monitoring standards
Subjects
Details
- Language :
- English
- ISSN :
- 0017-9078
- Volume :
- 76
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Health physics
- Publication Type :
- Academic Journal
- Accession number :
- 9883943
- Full Text :
- https://doi.org/10.1097/00004032-199901000-00004