Exposure prevention apparatus for dismantling heavy water reactor facilities and dismantling method of heavy water reactor facilities using the same
AssigneeKorea Hydro & Nuclear Power Co., Ltd.
InventorsSeok-Ju HWANG, Young Hwan HWANG, Ju-Young YOON, Cheon-Woo Kim
Life of this patent
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Abstract
An exposure prevention device for dismantling a heavy water reactor facility according to an embodiment includes: a shielding film that covers a front surface and a rear surface of a heavy water facility including a calandria and a calandria vault that accommodates the calandria; a plurality of radiation measuring instruments installed in the shielding film; and a motion detector installed in the shielding film.
Claims10
An exposure prevention device for dismantling a heavy water reactor facility, comprising:
- a shielding film that covers a front surface and a rear surface of a heavy water facility including a calandria and a calandria vault that accommodates the calandria;
- a plurality of radiation measuring instruments installed in the shielding film;
- and
- a motion detector installed in the shielding film.
A method for dismantling a heavy water reactor facility that includes a calandria including a main shell and a sub shell, a calandria vault that receives the calandria therein, a reactor pipe including a pressure tube that horizontally penetrates the calandria, a calandria tube that surrounds the pressure tube, and a cover assembly that is provided in the calandria vault, comprising:
- dismantling the reactor pipe provided in the calandria;
- installing an exposure preventing device in a front and a rear of the calandria vault;
- dismantling the cover assembly that covers the calandria;
- dismantling the calandria;
- and
- dismantling the calandria vault.
Dependencies are inferred from the claim text.