Silver reactor installation proposal

Technical Report · Fri Jan 27 04:00:00 EST 1950

OSTI ID:7201010

Work, J B

Although the sand filters have provided a decontamination of the Canyon ventilation air by a factor in the order of 10{sup 3}, appreciable quantities of activity are still emitted from the stack. An intensive study, employing caustic scrubbing and CWS monitoring at various points in the ventilation system, has established that all, or substantially all, this recontamination activity'' arises from the dissolver off-gas lines. The studies have also revealed that this activity is of two types, i.e., I{sup 131}, and an aerosol composed of other fission products. During actual metal dissolution the amount of beta activity due to I{sup 131} is at least 10 times greater than that due to other fission products. Under present operating conditions, as much as 2 curies of I{sup 131} pass the water scrubber and enter the stack during a dissolution. In non-dissolving periods, such as the sparging and jetting of the dissolved metal solution, appreciable quantities of non-iodine, particulate contamination pass to the stack thru the dissolver vent lines. The investigations have shown that for a complete decontamination of the dissolver off-gas streams, both a particulate matter remover and a more efficient iodine remover than the present water scrubber are necessary. In addition to its inadequate efficiency, the water scrubber is actually the source of another waste disposal problem. Approximately 20,000 pounds of contaminated solution result from an 8 hour metal dissolution. This creates a gross storage or disposal problem.

• Research Organization: Hanford Works, Richland, WA (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: AC06-87RL10930
• OSTI ID: 7201010
• Report Number(s): HW-15792; ON: DE90009087
• Country of Publication: United States
• Language: English

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54 ENVIRONMENTAL SCIENCES
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BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHEMISTRY
CLEANING
COMPARATIVE EVALUATIONS
DAYS LIVING RADIOISOTOPES
DECONTAMINATION
EFFICIENCY
ENVIRONMENTAL EFFECTS
EQUIPMENT
FILTERS
FISSION PRODUCT RELEASE
HANFORD RESERVATION
HISTORICAL ASPECTS
INTERMEDIATE MASS NUCLEI
IODINE 131
IODINE ISOTOPES
ISOTOPES
LIQUID WASTES
MATERIALS
NATIONAL ORGANIZATIONS
NUCLEI
ODD-EVEN NUCLEI
OPERATION
POLLUTION CONTROL EQUIPMENT
PRODUCTION REACTORS
RADIATION DOSE UNITS
RADIOACTIVE EFFLUENTS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIOISOTOPES
REACTOR OPERATION
REACTOR SAFETY
REACTORS
RECOMMENDATIONS
SAFETY
SAND
SCRUBBERS
SITE CHARACTERIZATION
UNITS
US DOE
US ERDA
US ORGANIZATIONS
WASTES
WATER CHEMISTRY