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1. (WO2019031251) CASK, AND NEUTRON-SHIELDING-PART PRODUCTION METHOD
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/031251 International Application No.: PCT/JP2018/027989
Publication Date: 14.02.2019 International Filing Date: 25.07.2018
IPC:
G21C 19/32 (2006.01) ,G21F 3/00 (2006.01) ,G21F 5/10 (2006.01) ,G21F 9/36 (2006.01)
G PHYSICS
21
NUCLEAR PHYSICS; NUCLEAR ENGINEERING
C
NUCLEAR REACTORS
19
Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
32
Apparatus for removing radioactive objects or materials from the reactor discharge area, e.g. to a storage place; Apparatus for handling radioactive objects or materials within a storage place or removing them therefrom
G PHYSICS
21
NUCLEAR PHYSICS; NUCLEAR ENGINEERING
F
PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
3
Shielding characterised by its physical form, e.g. granules, or shape of the material
G PHYSICS
21
NUCLEAR PHYSICS; NUCLEAR ENGINEERING
F
PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
5
Transportable or portable shielded containers
06
Details of, or accessories to, the containers
10
Heat-removal systems, e.g. using circulating fluid or cooling fins
G PHYSICS
21
NUCLEAR PHYSICS; NUCLEAR ENGINEERING
F
PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
9
Treating radioactively contaminated material; Decontamination arrangements therefor
28
Treating solids
34
Disposal of solid waste
36
by packaging; by baling
Applicants:
日立造船株式会社 HITACHI ZOSEN CORPORATION [JP/JP]; 大阪府大阪市住之江区南港北1丁目7番89号 7-89, Nanko-kita 1-chome, Suminoe-ku, Osaka-shi, Osaka 5598559, JP
Inventors:
樋口 晃 HIGUCHI, Akira; JP
濱田 健太 HAMADA, Kenta; JP
森田 寛之 MORITA, Hiroyuki; JP
秦 彰宏 SHIN, Akihiro; JP
Agent:
松阪 正弘 MATSUSAKA, Masahiro; JP
田中 勉 TANAKA, Tsutomu; JP
井田 正道 IDA, Masamichi; JP
Priority Data:
2017-15361208.08.2017JP
Title (EN) CASK, AND NEUTRON-SHIELDING-PART PRODUCTION METHOD
(FR) FÛT, ET PROCÉDÉ DE PRODUCTION D'UNE PIÈCE DE BLINDAGE NEUTRONIQUE
(JA) キャスクおよび中性子遮蔽部の作製方法
Abstract:
(EN) This cask (1) comprises a drum body (2), an outer cylinder (3), a plurality of fins (4), and a plurality of neutron shielding parts (5). The drum body (2) has a cylindrical shape centered on a center axis and is capable of accommodating a fuel assembly. The outer cylinder (3) has a cylindrical shape surrounding the circumference of the drum body (2). The plurality of fins (4) are arranged in the circumferential direction in a cylindrical space (41) formed between the drum body (2) and outer cylinder (3) and divide the cylindrical space (41) into a plurality of divided spaces (42) by connecting the outer circumferential surface (211) of the drum body (2) and the inner circumferential surface (311) of the outer cylinder (3). The plurality of neutron shielding parts (5) include a neutron shielding material that fills the plurality of divided spaces (42). Each of the neutron shielding parts (5) has a void part (59) that extends in an axial direction along the center axis. As a result, when a fuel assembly is accommodated inside the cask (1), it is possible to reduce stress on the outer cylinder (3), and the like, resulting from thermal expansion of the neutron shielding material.
(FR) L'invention concerne un fût (1) comprenant un corps de tambour (2), un cylindre externe (3), une pluralité d'ailettes (4), et une pluralité de pièces de blindage neutronique (5). Le corps de tambour (2) a une forme cylindrique centrée sur un axe central et est apte à recevoir un ensemble combustible. Le cylindre externe (3) a une forme cylindrique entourant la circonférence du corps de tambour (2). La pluralité d'ailettes (4) sont agencées dans la direction circonférentielle dans un espace cylindrique (41) formé entre le corps de tambour (2) et le cylindre externe (3) et divisent l'espace cylindrique (41) en une pluralité d'espaces divisés (42) en reliant la surface circonférentielle externe (211) du corps de tambour (2) et la surface circonférentielle interne (311) du cylindre externe (3). La pluralité de pièces de blindage neutronique (5) comprend un matériau de blindage neutronique qui remplit la pluralité d'espaces divisés (42). Chacune des pièces de blindage neutronique (5) a une partie vide (59) qui s'étend dans une direction axiale le long de l'axe central. Par conséquent, lorsqu'un ensemble combustible est logé à l'intérieur du fût (1), il est possible de réduire la contrainte sur le cylindre externe (3), et similaire, résultant de l'expansion thermique du matériau de blindage neutronique.
(JA) キャスク(1)は、胴本体(2)と、外筒(3)と、複数のフィン(4)と、複数の中性子遮蔽部(5)とを備える。胴本体(2)は、中心軸を中心とする筒状であり、燃料集合体を収容可能である。外筒(3)は、胴本体(2)の周囲を囲む筒状である。複数のフィン(4)は、胴本体(2)と外筒(3)との間に形成される筒状空間(41)において周方向に配列され、胴本体(2)の外周面(211)と外筒(3)の内周面(311)とを接続することにより、筒状空間(41)を複数の分割空間(42)に分割する。複数の中性子遮蔽部(5)は、複数の分割空間(42)に充填された中性子遮蔽材を含む。各中性子遮蔽部(5)は、中心軸に沿う軸方向に延びるボイド部(59)を備える。これにより、燃料集合体をキャスク(1)の内部に収容した際に、中性子遮蔽材の熱膨張により外筒(3)等に生じる応力を低減することができる。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)