Measurement of Temperature of 48Y-cylinder Exposed to Sun

Year
1992
Author(s)
K. Tsukiyama - Central Research Service, Kanda Tokyo
K. Sato - Central Research Service Co.
N. Watabe - Central Research Institute of Electric Power Industry
S. Ozaki - Central Research Institute of Electric Power Industry
File Attachment
1471.PDF1.34 MB
Abstract
According to the IAEA' 85 regulation para .543, when the temperature of a Type B package is evaluated under normal conditions of transport, the solar insolation conditions should be assumed to be as specified in Table XII(para . 546), and the ambient temperature should be assumed to be 38'C(para . 646) . Natural UF6 is not regulated by these requirements, because it is classified as the Industrial package. However, it is desirable that the temperature rise is evaluated by thermal analysis or experiment, because natural UF6 has the triple point at 64'C-1140mHg , the sublimation point at 56 .4'C-760mHg and liquifies above 64'C . In order to confirm that UF6 in 48Y cylinder does not liquify during midsummer, temperatures at the surface and inside of 48Y-cy inder were measured last summer (Aug . 1991); the cylinder was filled with steelshot, which has a similar thermal conductivity to UF6 .