Observations of the distribution and the nature of alpha-active particulate material in a HEPA filter used for plutonium-containing dust
Autoradiography has been used to determine the distribution and the nature of plutonium particulate material on a high-efficiency particulate air (HEPA) filter used to filter /sup 239/Pu-containing dust. Higher concentrations of alpha-active material on upstream and downstream folds of the filter indicate uneven airflow through the filter. Observations of aggregate recoil particles on the downstream face of the filter suggest that aggregate recoil transfer, a mechanism which may reduce long-term HEPA filter efficiency, may be occurring. Amounts of alpha activity found on downstream filters confirm this supposition.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- Sponsoring Organization:
- US Energy Research and Development Administration (ERDA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 7223109
- Report Number(s):
- ORNL/TM-5765
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
500101 -- Environment
Atmospheric-- Basic Studies-- Radiometric Techniques-- (-1989)
500300* -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
AEROSOL MONITORING
AEROSOLS
AIR
ALPHA DECAY RADIOISOTOPES
ALPHA PARTICLES
AUTORADIOGRAPHY
BUILDINGS
CHARGED PARTICLES
COLLOIDS
DISPERSIONS
DISTRIBUTION
DUSTS
EQUIPMENT
EVEN-ODD NUCLEI
FILTERS
FLUID FLOW
FLUIDS
GASES
HEAVY NUCLEI
ISOTOPES
MONITORING
NUCLEI
PLUTONIUM 239
PLUTONIUM ISOTOPES
POLLUTION CONTROL EQUIPMENT
RADIATION MONITORING
RADIOACTIVE AEROSOLS
RADIOACTIVITY
RADIOISOTOPES
SOLS
SPATIAL DISTRIBUTION
VENTILATION
YEARS LIVING RADIOISOTOPES
Atmospheric-- Basic Studies-- Radiometric Techniques-- (-1989)
500300* -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
AEROSOL MONITORING
AEROSOLS
AIR
ALPHA DECAY RADIOISOTOPES
ALPHA PARTICLES
AUTORADIOGRAPHY
BUILDINGS
CHARGED PARTICLES
COLLOIDS
DISPERSIONS
DISTRIBUTION
DUSTS
EQUIPMENT
EVEN-ODD NUCLEI
FILTERS
FLUID FLOW
FLUIDS
GASES
HEAVY NUCLEI
ISOTOPES
MONITORING
NUCLEI
PLUTONIUM 239
PLUTONIUM ISOTOPES
POLLUTION CONTROL EQUIPMENT
RADIATION MONITORING
RADIOACTIVE AEROSOLS
RADIOACTIVITY
RADIOISOTOPES
SOLS
SPATIAL DISTRIBUTION
VENTILATION
YEARS LIVING RADIOISOTOPES