EMERGENCY GAS PROCESSING EQUIPMENT AND EMERGENCY GAS PROCESSING METHOD

• Main Authors: HIDAKA MASATAKA, FUJII TADASHI
• Format: Patent
• Language: English; Japanese
• Published: 25.06.2020
• Subjects: DECONTAMINATION ARRANGEMENTS THEREFOR; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS; PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL

To provide emergency gas processing equipment and an emergency gas processing method capable of performing gas processing for removing a radioactive material from a gas in a nuclear reactor facility and discharging the gas to an outdoor in a manner of maintaining high suction force to the gas and removal ability of the radioactive material, in dismantlement and accident of a reactor.SOLUTION: Emergency gas processing equipment 100 comprises: gas extraction channels (2-14c); gas dryers (3, 4); a suction device 7 comprising a filter 5 and an exhaust fan 6, sucking a gas to be processed by a negative pressure generated by speed increase of a liquid for shifting the gas to be processed into the liquid; and a gas-liquid separator 8 for gas-liquid separation of the gas to be processed and the liquid. An emergency gas processing method sucks the gas to be processed from a nuclear reactor containment 1 by a negative pressure generated by speed increase of the liquid and shifts the gas to be processed into the liquid, performs gas-liquid separation of the gas to be processed shifted into the liquid and the liquid, then discards the liquid subjected to the gas liquid separation with a radioactive material which was included in the gas to be processed, then causes the gas subjected to gas-liquid separation to pass the filter 5.SELECTED DRAWING: Figure 1 【課題】原子炉の解体時や事故時に、原子炉施設内の気体を放射性物質を除去して屋外に放出するガス処理を、気体に対する吸引力と放射性物質の除去能力とを高く維持しながら行うことができる非常用ガス処理設備及び非常用ガス処理方法を提供する。【解決手段】非常用ガス処理設備１００は、抽気流路（２〜１４ｃ）と、気体乾燥装置（３，４）と、フィルタ５と、排気ファン６とを備え、液体の増速によって発生させた負圧で被処理気体を吸引して液体中に移行させる吸引装置７と、被処理気体と液体とを気液分離する気液分離器８とを備える。非常用ガス処理方法は、液体の増速によって発生させた負圧で原子炉格納容器１から被処理気体を吸引して、被処理気体を液体中に移行させ、液体中に移行した被処理気体と液体とを気液分離し、気液分離された液体を被処理気体中に含まれていた放射性物質と共に廃棄し、気液分離された気体をフィルタ５に通す。【選択図】図１