事故工况下主控室应急新风系统碘吸附器性能试验研究

Abstract

Abstract: In order to study the efficiency variation of iodine adsorbers used in main control rooms under accident conditions, poisoning, aging, irradiation, and efficiency variation experiments of impregnated activated carbon were carried out. Basing on combination of various experimental factors, long-term efficiency variation tests were designed and carried out under two condition sets of (70±1) ℃ temperature with (40±2)% relative humidity, and (44±1) ℃ temperature with (95±1.5)% relative humidity, using three kinds of activated carbon samples with initial efficiencies of 99.90%, 99.97%, and 99.98%. Experimental results showed natural aging phenomena in activated carbon samples, and acetic acid and other substances could accelerate the aging process of activated carbon. Irradiation had no effect on the efficiency of impregnated activated carbon to remove radioactive methyl iodide. Under severe accident conditions, the efficiencies of activated carbon samples had no decrease within 168 hours.

Key words: accident condition, main control room, iodine adsorber, fresh air system, performance test

CLC Number:

TL75

WANG Kunjun, ZHANG Xueping, QIAO Taifei, MA Ying, SHI Yingxia, QIU Dangui. Performance study of iodine adsorbers used in emergency fresh air systems of main control rooms under severe accident conditions[J].RADIATION PROTECTION, 2018, 38(1): 38-44.

References

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Performance study of iodine adsorbers used in emergency fresh air systems of main control rooms under severe accident conditions

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