Development of submicron particle size classification and collection techniques for nuclear facility off-gas streams. [Diffusion battery and electrofluidized bed]

Technical Report · Sun Feb 01 04:00:00 EST 1981

DOI:https://doi.org/10.2172/6566429· OSTI ID:6566429

Hohorst, F. A.; Fernandez, S. J.

High efficiency particulate air (HEPA) filters are an essential part of nuclear facility off-gas cleanup systems. However, HEPA-rated sampling filters are not the most appropriate samplers for the particle penetrating off-gas cleanup systems. Previous work at the Idaho Chemical Processing Plant (ICPP) estimated perhaps 5% of the radioactivity that challenged sampling filters penetrated them in the form of submicron particles - typically less than 0.2 microns. Accordingly, to evaluate these penetrating aerosols more fully, a suitable robust monitoring system for size differentiation and measurement of submicron particles was developed. A literature survey revealed that the diffusion battery was the best choice for particle size classification and that the electrofluidized bed was the best method for particle collection in ICPP off-gas streams. This report describes the laboratory study and in-plant demonstration of these two techniques.

• Research Organization: Exxon Nuclear Idaho Co., Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-79ID01675
• OSTI ID: 6566429
• Report Number(s): ENICO-1076
• Country of Publication: United States
• Language: English

Related Subjects

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12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
500300 -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIR FILTERS
AIR SAMPLERS
CHALCOGENIDES
COLLOIDS
DIFFUSION
DISPERSIONS
EFFICIENCY
EQUIPMENT
EVALUATION
FILTERS
FUEL REPROCESSING PLANTS
GASEOUS WASTES
GRANULAR BED FILTERS
HUMIDITY
IDAHO CHEMICAL PROCESSING PLANT
LABORATORY EQUIPMENT
MATERIALS
MECHANICAL FILTERS
MONITORING
NATIONAL ORGANIZATIONS
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
NUCLEAR FACILITIES
OFF-GAS SYSTEMS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PARTICLE SIZE CLASSIFIERS
PARTICLES
POLLUTANTS
POLLUTION CONTROL EQUIPMENT
RADIOACTIVE AEROSOLS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIOACTIVITY
SAMPLERS
SIZE
SOLS
TEMPERATURE DEPENDENCE
US AEC
US DOE
US ERDA
US ORGANIZATIONS
WASTES