CONCRETE CASK AND ITS MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To provide a sealed type concrete cask keeping a conventional heat removal performance or having a higher heat removal performance than hitherto, and preventing leak of radioactivity to the outside. SOLUTION: This concrete cask A has a formation wherein a shielding body 3 made...

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Hauptverfasser:	HATA AKIHITO, SUGIHARA YUTAKA, OWAKI EIJI, HIRAKAWA KATSUHIKO, MIYAHARA SHIGESADA, YANAI HIROAKI, SHIMOJO JUN
Format:	Patent
Sprache:	eng
Schlagworte:	DECONTAMINATION ARRANGEMENTS THEREFOR NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PHYSICS PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT TREATING RADIOACTIVELY CONTAMINATED MATERIAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a sealed type concrete cask keeping a conventional heat removal performance or having a higher heat removal performance than hitherto, and preventing leak of radioactivity to the outside. SOLUTION: This concrete cask A has a formation wherein a shielding body 3 made of concrete and a metal heat-transfer fin 11 are provided between a metal inner cylinder 7 and an outer cylinder 4, and a storage part for storing a radioactive material x is provided inside the inner cylinder 7. The storage part has a sealed structure so as to be blocked from the cask A outside. The heat-transfer fin 11 is provided so that its outer cylinder 4 side part is in contact with the outer cylinder 4, and is notched so that its inner cylinder 7 side part forms a separate part relative to the inner cylinder 7. COPYRIGHT: (C)2004,JPO&NCIPI