A Review of Potential Cementing Systems for Sealing and Support Matrices in Deep Borehole Disposal of Radioactive Waste
Cementitious grouts are being developed for use as sealing and support matrices (SSMs) in deep borehole disposal (DBD) where temperatures do not exceed 190 °C. They will seal radioactive waste containers into the bottom 2 km of holes drilled up to 5 km deep into the crystalline basement. Th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/12/2393 |
| _version_ | 1798006738969952256 |
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| author | Nicholas Charles Collier Neil Brennan Milestone Karl Patrick Travis |
| author_facet | Nicholas Charles Collier Neil Brennan Milestone Karl Patrick Travis |
| author_sort | Nicholas Charles Collier |
| collection | DOAJ |
| description | Cementitious grouts are being developed for use as sealing and support matrices (SSMs) in deep borehole disposal (DBD) where temperatures do not exceed 190 °C. They will seal radioactive waste containers into the bottom 2 km of holes drilled up to 5 km deep into the crystalline basement. The temperature and pressure is likely to be similar to those in hydrocarbon and geothermal energy wells, where grout placement and durability are affected. This paper reviews the potential cementing systems suitable for this application and explains why a single solution of a formulation of Class G oil well cement, silica flour, water, fluid loss additive, and retarding admixture has been selected. This type of formulation has been used extensively for over 100 years in well cementing. It should provide the short-term performance and durability required for an SSM, maintaining the seal around the waste packages within the disposal zone long after the boreholes are sealed back to the surface, and thus augmenting the safety case for DBD. |
| first_indexed | 2024-04-11T12:59:30Z |
| format | Article |
| id | doaj.art-763db3c91a6a45af84ce3bf38606270a |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T12:59:30Z |
| publishDate | 2019-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-763db3c91a6a45af84ce3bf38606270a2022-12-22T04:22:59ZengMDPI AGEnergies1996-10732019-06-011212239310.3390/en12122393en12122393A Review of Potential Cementing Systems for Sealing and Support Matrices in Deep Borehole Disposal of Radioactive WasteNicholas Charles Collier0Neil Brennan Milestone1Karl Patrick Travis2Deep Borehole Disposal Research Group, Immobilisation Science Laboratory, Department of Materials Science & Engineering, The University of Sheffield, Sheffield S1 3JD, UKCallaghan Innovation, 69 Gracefield Road, PO Box 31310, Lower Hutt 5040, New ZealandDeep Borehole Disposal Research Group, Immobilisation Science Laboratory, Department of Materials Science & Engineering, The University of Sheffield, Sheffield S1 3JD, UKCementitious grouts are being developed for use as sealing and support matrices (SSMs) in deep borehole disposal (DBD) where temperatures do not exceed 190 °C. They will seal radioactive waste containers into the bottom 2 km of holes drilled up to 5 km deep into the crystalline basement. The temperature and pressure is likely to be similar to those in hydrocarbon and geothermal energy wells, where grout placement and durability are affected. This paper reviews the potential cementing systems suitable for this application and explains why a single solution of a formulation of Class G oil well cement, silica flour, water, fluid loss additive, and retarding admixture has been selected. This type of formulation has been used extensively for over 100 years in well cementing. It should provide the short-term performance and durability required for an SSM, maintaining the seal around the waste packages within the disposal zone long after the boreholes are sealed back to the surface, and thus augmenting the safety case for DBD.https://www.mdpi.com/1996-1073/12/12/2393deep bore hole disposalnuclear waste disposalcementing systems for waste disposal |
| spellingShingle | Nicholas Charles Collier Neil Brennan Milestone Karl Patrick Travis A Review of Potential Cementing Systems for Sealing and Support Matrices in Deep Borehole Disposal of Radioactive Waste Energies deep bore hole disposal nuclear waste disposal cementing systems for waste disposal |
| title | A Review of Potential Cementing Systems for Sealing and Support Matrices in Deep Borehole Disposal of Radioactive Waste |
| title_full | A Review of Potential Cementing Systems for Sealing and Support Matrices in Deep Borehole Disposal of Radioactive Waste |
| title_fullStr | A Review of Potential Cementing Systems for Sealing and Support Matrices in Deep Borehole Disposal of Radioactive Waste |
| title_full_unstemmed | A Review of Potential Cementing Systems for Sealing and Support Matrices in Deep Borehole Disposal of Radioactive Waste |
| title_short | A Review of Potential Cementing Systems for Sealing and Support Matrices in Deep Borehole Disposal of Radioactive Waste |
| title_sort | review of potential cementing systems for sealing and support matrices in deep borehole disposal of radioactive waste |
| topic | deep bore hole disposal nuclear waste disposal cementing systems for waste disposal |
| url | https://www.mdpi.com/1996-1073/12/12/2393 |
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