Experimental Investigation of the Iodine Partition Coefficient

Kelly, J.L.; Mulder, Robert U.; Babad, Chaim J.

doi:10.13182/nt85-a33695

Cited by 8 publications

(3 citation statements)

References 4 publications

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“…7. The volatility of HIO was first measured by Lin 26) and also by other research groups, 47,48) and Lin's data are also included in Fig. 7 for comparison.…”

Section: Volatilities Of Iodine Speciesmentioning

confidence: 93%

“…Volatilities of iodine species, which are generally measured by water-gas partitioning, have been studied by several investigators [40][41][42][43][44][45][46][47][48][49][50][51][52][53] under various conditions. The water-gas partition coefficient (PC) is defined as the ratio of the concentration of an iodine species in water to that in the gas phase.…”

Section: Volatilities Of Iodine Speciesmentioning

confidence: 99%

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Reassessment of Reactor Coolant and Iodine Chemistry under Accident Conditions

Lin

Chao

2009

Journal of Nuclear Science and Technology

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Under severe accident conditions, the chemistry of reactor coolant could be significantly different from that under normal operating conditions. Injection of standby liquid control (SBLC) solution, release of fission product cesium (Cs) from damaged fuel rods, and addition of NaOH and Na 2 S 2 O 3 in spray water will certainly enhance the alkalinity of water. In addition, oxidation of fuel cladding (zircaloy) by hightemperature water and steam would produce a significant amount of hydrogen, and hydrogen in water could effectively suppress water radiolysis and make the water more reducing. It is believed that the chemistry and transport behavior of iodine released from damaged fuel rods are strongly dependent on the chemistry of reactor water under accident conditions, and it is expected that the released iodine will most likely remain in nonvolatile forms in water. The chemistry of reactor coolant and the activities of iodine released from a damaged core are reviewed in detail in this paper.

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“…7. The volatility of HIO was first measured by Lin 26) and also by other research groups, 47,48) and Lin's data are also included in Fig. 7 for comparison.…”

Section: Volatilities Of Iodine Speciesmentioning

confidence: 93%

Section: Volatilities Of Iodine Speciesmentioning

confidence: 99%

Reassessment of Reactor Coolant and Iodine Chemistry under Accident Conditions

Lin

Chao

2009

Journal of Nuclear Science and Technology

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“…P I 2 varies from 100 at room temperature to 5 at 150 • C [9][10][11][12][13] and this means that iodine volatility increases with temperature. At 80 • C, P I 2 is about 10.…”

Section: Iodine Behavior During Nuclear Reactor Cold Shutdownmentioning

confidence: 99%

Absorption of iodine from aqueous solutions on nuclear reactors alloys

Bayrı¹,

Rosset²,

Kacemi³

2001

Radiochimica Acta

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Iodide ions I − , molecular iodine I 2 and iodate ions IO 3 − absorption has been studied on the three alloys which are present, in majority, in french nuclear reactors: Inconel 600, Zircaloy and 304 L stainless steel. Iodide and iodate anions are not absorbed on the three considered alloys and contribute only for a negligible quantity to iodine retention on the nuclear reactors materials. Molecular iodine is absorbed according to: 304 stainless steel < Zircaloy < Inconel 600Influence of pH has been studied: absorption increases in acidic medium and decreases in basic medium. Molecular iodine absorption increases with temperature. Phenomenons which occur with iodine during the cold shutdown of a nuclear reactor and during its restart are discussed from the point of vue of iodine volatilization risk.

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