Global Patent Index - EP 0167403 A3

EP 0167403 A3 19861230 - IMPROVEMENTS IN OR RELATING TO THE DISPOSAL OF NUCLEAR WASTE

Title (en)

IMPROVEMENTS IN OR RELATING TO THE DISPOSAL OF NUCLEAR WASTE

Publication

EP 0167403 A3 19861230 (EN)

Application

EP 85304786 A 19850704

Priority

US 62797784 A 19840705

Abstract (en)

[origin: EP0167403A2] A land disposal site for the disposal of nuclear waste material which generally comprises a trench, a non-rigid, water-shedding cap formed from alluvium and silt which overlies this depression, and a solid array of waste-containing modules disposed in the trench for both encapsulating the waste and for supporting the non-rigid cap over the depression. The floor of the trench preferably includes a capillary barrier formed from a layer of gravel so that ground water will not seep up into the modules buried within the disposal site. The top surfaces of the modules are covered with a sloped layer of alluvium, which in turn is covered with another capillary barrier of gravel. This capillary barrier of gravel carries a sloped layer of silt which sheds running surface water and directs it into a pair of drains disposed on either side of the trench. The silt layer is capped with a final layer of graded rip-rap which protects it from wind and water erosion, and which forms a natural radiation and intrusion barrier. Finally, the modules disposed within the disposal site are preferably uniformly shaped, hexagonal prisms which are capable of being solidly packed into a structure which is flexibly conformable with any changes in shape of the trench brought about by seismic or other natural disturbances.

IPC 1-7

G21F 9/34

IPC 8 full level

G21F 9/00 (2006.01); G21F 9/34 (2006.01); G21F 9/36 (2006.01)

CPC (source: EP KR)

G21F 9/34 (2013.01 - EP KR)

Citation (search report)

Designated contracting state (EPC)

BE CH DE FR GB IT LI NL SE

DOCDB simple family (publication)

EP 0167403 A2 19860108; EP 0167403 A3 19861230; EP 0167403 B1 19900509; BR 8503301 A 19860401; CA 1246879 A 19881220; DE 3577615 D1 19900613; ES 544876 A0 19861216; ES 8702728 A1 19861216; FI 852651 A0 19850704; FI 852651 L 19860106; JP S6135399 A 19860219; KR 860001451 A 19860226; KR 930008245 B1 19930827; PH 25069 A 19910219; YU 107385 A 19901231; ZA 854672 B 19860226

DOCDB simple family (application)

EP 85304786 A 19850704; BR 8503301 A 19850704; CA 485243 A 19850626; DE 3577615 T 19850704; ES 544876 A 19850704; FI 852651 A 19850704; JP 14908685 A 19850704; KR 850004844 A 19850705; PH 32437 A 19850621; YU 107385 A 19850627; ZA 854672 A 19850629