Results 1 to 10 of about 14,520 (251)

Microbial degradation of citrate mediates sealing of cement cracks under anaerobic conditions relevant to radioactive waste disposal [PDF]

npj Materials Degradation
In radioactive waste repositories, cement is used for construction, backfill, and waste encapsulation. Over time, cracks may form, creating potential pathways for contaminant migration.
Natalie Byrd, Ananya Singh, Naji M. Bassil, Joe S. Small, Frank Taylor, Christopher Boothman, Dirk L. Engelberg, Sultan Mahmood, Tristan Lowe, Jonathan R. Lloyd, Katherine Morris   +10 more
doaj   +2 more sources

The Beishan underground research laboratory for geological disposal of high-level radioactive waste in China: Planning, site selection, site characterization and in situ tests

Journal of Rock Mechanics and Geotechnical Engineering, 2018
With the rapid development of nuclear power in China, the disposal of high-level radioactive waste (HLW) has become an important issue for nuclear safety and environmental protection. Deep geological disposal is internationally accepted as a feasible and
Ju Wang, Liang Chen, Rui Su, Xingguang Zhao   +3 more
doaj   +3 more sources

Validation of Neutron Flux and Activation in the Nagra AMAC model of the Mühleberg Power Plant [PDF]

EPJ Web of Conferences, 2023
The decommissioning of the Mühleberg Nuclear Power Plant (KKM) is supported by Nagra (National Cooperative for the Disposal of Radioactive Waste) through computational analysis of neutron activation in the reactor components and structures using the ...
Bykov Valentyn, Volmert Ben, Pelloux Sylvain, Neukäter Erwin   +3 more
doaj   +1 more source

Measuring thermal conductivity and water suction for variably saturated bentonite

Nuclear Engineering and Technology, 2021
An engineered barrier system (EBS) for the disposal of high-level radioactive waste (HLW) is composed of a disposal canister with spent fuel, a buffer material, a gap-filling material, and a backfill material.
Seok Yoon, Geon-Young Kim
doaj   +1 more source

Parallel groundwater flow simulation method based on a discrete fracture network model

地质科技通报, 2023
Objective Groundwater flow in fractured rocks has strong heterogeneity and anisotropy. The discrete fracture network (DFN) method has been internationally considered as one of the most reasonable and effective methods to describe the fracture water ...
Jingbo Zhao, Jian Liu, Zhichao Zhou, Ruili Ji, Ming Zhang, Xinyu Fu   +5 more
doaj   +1 more source

Benefit and Cost Ratio Analysis of Direct Disposal and Pyro-SFR Fuel Cycle Alternatives Using the Results of Multi-Criteria Decision-Making in Korea

Energies, 2021
This paper presents the results of various benefit–cost ratio (BCR) analyses of back-end nuclear fuel cycle alternatives. Korea is currently considering two alternatives for the disposal of spent nuclear fuel: direct disposal and pyroprocessing.
Sungki Kim, Jin-Seop Kim, Dong-Keun Cho
doaj   +1 more source

Theoretical and Numerical Study on Electrical Resistivity Measurement of Cylindrical Rock Core Samples Using Perimeter Electrodes

Energies, 2021
The estimation of hydraulic and mechanical properties of bedrock is important for the evaluation of energy-related structures, including high-level nuclear waste repositories, hydraulic fracturing wells, and gas-hydrate production wells.
Ji-Won Kim, Chang-Ho Hong, Jin-Seop Kim, Song-Hun Chong   +3 more
doaj   +1 more source

Ensemble Learning Approach for the Prediction of Quantitative Rock Damage Using Various Acoustic Emission Parameters

Applied Sciences, 2021
Monitoring rock damage subjected to cracks is an important stage in underground spaces such as radioactive waste disposal repository, civil tunnel, and mining industries.
Hang-Lo Lee, Jin-Seop Kim, Chang-Ho Hong, Dong-Keun Cho   +3 more
doaj   +1 more source

Experimental study on thermal expansion properties of GMZ bentonite

Yantu gongcheng xuebao, 2022
Laboratory tests are conducted on the compacted Gaomiaozi (GMZ) bentonite by using the DIL 806 thermal dilatometer. The influences of different factors on the thermal expansion properties of the bentonite are systematically analyzed.
CAO Sheng-fei 1, 2, LIU Yue-miao 1, 2, XIE Jing-li 1, 2, YAN An 1, 2, GAO Yu-feng 1, 2, TONG Qiang 1, 2
doaj   +1 more source

Linear thermal expansion behavior of compacted bentonite buffer materials

Case Studies in Thermal Engineering, 2022
In a geological repository system, buffer is indispensable to ensure the safe disposal of high-level radioactive waste (HLW). Because heat generated from spent nuclear fuel in a canister is released to the surrounding buffers, thermal properties of such ...
Seok Yoon, Gi-Jun Lee, Gyu-Hyun Go
doaj   +1 more source