PERFORMANCE OF ACTIVATED CARBON BEDS IN SRP REACTOR CONFINEMENT FACILITIES. Progress Report, September 1962-September 1965

Durant, W.S.

doi:10.2172/4544860

Cited by 2 publications

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“…Previous confinement studies at Savannah River have shown that iodine retention on activated carbon is greatly influenced by impregnants on the carbon, temperature of the carbon beds, length of time the carbon has been in service, moisture content of the air passing through the beds, and radiation exposure to iodine-bearing carbon in the beds. 2…”

Section: Carbon Studies Carbon Testingmentioning

confidence: 99%

Confinement of airborne radioactivity. Progress report: January--December 1975

Evans¹,

Dexter²

1975

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Efforts are underway at Savannah River Laboratory (SRL) and the Naval Research Laboratory (NRL) to develop new carbonimpregnant formulations suitable for use in nuclear power plants as well as in the SRP system. Emphasis has been placed on carbons derived from domestic raw materials and impregnated with an amine having lower vapor pressure, higher flash point, and lower cost than triethylenediamine (TEDA). Promising results have been obtained with carbons derived from coal, petroleum, wood, and coconut and impregnated with a combination of iodine salts and hexamethylenetetramine (HMTA). Service-aging of several of the HMTA-iodine salt carbons is also being studied. A separate study of the ability of sodium thiosulfate and potassium hydroxide to retain iodine in aqueous solutions in the presence of high-intensity gamma radiation show that concentrations of ~l wt % thiosulfate are required to reduce iodine evolution to less than 1%. A 0.05 wt % addition of potassium hydroxide has about the same effect. These studies revealed that lower concentrations of thiosulfate actually appear to promote evolution of both iodine and an unidentified species of iodine that is capable of penetrating several inches of carbon adsorber. The unidentified iodine compounds are, however, efficiently retained by a HEPA filter. This result suggests that the penetrating iodine may exist in the form of a particulate or aerosol. Iodine 17 CONFINEMENT OF AIRBORNE RADIOACTIVITY

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Section: Carbon Studies Carbon Testingmentioning

confidence: 99%

Confinement of airborne radioactivity. Progress report: January--December 1975

Evans¹,

Dexter²

1975

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“…Results of previous studies are summarized in References 2 through 17. This report summarizes (1) work during 1977 to evaluate the performance of Type GX-176* carbon installed in the confinement system, (2) research efforts to develop improved carbon types to further enhance iodine retention capabilities and (3) a series of tests on iodine loaded, silver exchanged zeolite (AgX) conducted at the Department of Energy's (DOE) request to evaluate the stability of AgX under radiation stress and dynamic flow condit ions.…”

Section: Introductionmentioning

confidence: 99%

Confinement of airborne radioactivity. Progress report, January--December 1977

Evans¹

1979

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PERFORMANCE OF ACTIVATED CARBON BEDS IN SRP REACTOR CONFINEMENT FACILITIES. Progress Report, September 1962-September 1965

Cited by 2 publications

References 0 publications

Confinement of airborne radioactivity. Progress report: January--December 1975

Confinement of airborne radioactivity. Progress report: January--December 1975

Confinement of airborne radioactivity. Progress report, January--December 1977

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