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; Sumino, Kozo; Yasu, Tetsunori; ; ; ; Terunuma, Seiichi
PNC TN9410 91-376, 79 Pages, 1991/11
None
G.Zhu*; Arai, Hidehiko; Hosono, Masakazu
J. Radiat. Res. Radiat. Process., 9(1), p.54 - 58, 1991/02
no abstracts in English
Ohtaki, Akira
PNC TN9410 90-062, 145 Pages, 1990/04
It is important to control an operation to avoid water flow in which cause of SCC for a superheater which is made by astinetic stainless steel. During the superheater war㎜ing operation at the 50MW Steam Generator Test Facility, temperature fluctuation at the inlet tube sheet are easily occurred, and existence of saturated water with in warmming steam is regarded as the cause of it. A test simulating operating conditions of "Monju" superheater warmming was carried out to comfirm start up condition of "Monju". Test results show that a part of war㎜ing steam was cooled down to saturated temperature in main steam pipe which temperature is still lower than the saturated temperature, then the saturated water flows in the tube sheet which temperature is as high as sodium inlet temperature, and cause the temperature fluctuation. In order to confirm the effect of pre-heating the main pipe using trace line, a trace line was adapted at the main steam pipe, and the same superheater warmming simulation test was performed. Test results show that trace line was effective to pre-heat the main steam pipe exceeding temperature, and the temperature fluetuation was considerably decreased.
Matsui, Kazuaki; Imo, Kazumichi*; Mitsumoto, Rika; Ando, Masanori; Futagami, Satoshi
no journal, ,
no abstracts in English
