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「常陽」MK-III性能試験; 異常時過渡応答試験関係

MK-III Performance Tests in JOYO; Transient Response Tests

川原 啓孝 ; 暦本 雅史 ; 城 隆久; 石田 公一; 有吉 昌彦; 礒崎 和則 

Kawahara, Hirotaka; Rekimoto, Masafumi; Jo, Takahisa; Ishida, Koichi; Ariyoshi, Masahiko; Isozaki, Kazunori

MK-Ⅲ性能試験に係るプラント特性試験のうち、異常時過渡応答関係(手動スクラム試験、外部電源喪失試験及び主冷却系による崩壊熱除去試験)の各試験は、原子炉熱出力70MWt(50%出力)、140MWt(定格熱出力)、35MWt(原子炉通常停止時における主冷却系による崩壊熱除去試験のみ)にて実施した。試験の結果、主中間熱交換器及び主冷却機の交換等により大幅に改造した冷却系設備が、過大な熱過渡を生じることなく原子炉停止後の崩壊熱を除去できることなどが確認できた。

The manual shutdown tests and loss of electric power supply tests were carried out as the transient response test on anomaly condition at 70MWt and 140MWt operation. The decay heat removal tests by main cooling system were carried out after each transient response tests. It was confirmed that the plant protection system operates properly and the reactor can be shut down safely. These results confirmed that the thermal transients are less severe than the design conditions.

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