Two Methods for Converting a Heavy-Water Research Reactor to Use Low-Enriched-Uranium Fuel to Improve Proliferation Resistance After Startup
This article demonstrates the feasibility of converting a heavy-water research reactor from natural to low-enriched uranium in order to slow the production of weapon-usable plutonium, even if the core cannot be physically reconfigured. The analysis was performed for Iran’s IR-40 reactor at Arak in s...
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| Format: | Article |
| Language: | en_US |
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Taylor & Francis
2015
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| Online Access: | http://hdl.handle.net/1721.1/96944 |
| _version_ | 1826203270618546176 |
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| author | Kemp, Ronald S. |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Kemp, Ronald S. |
| author_sort | Kemp, Ronald S. |
| collection | MIT |
| description | This article demonstrates the feasibility of converting a heavy-water research reactor from natural to low-enriched uranium in order to slow the production of weapon-usable plutonium, even if the core cannot be physically reconfigured. The analysis was performed for Iran’s IR-40 reactor at Arak in support of negotiations with Iran, but the methods have application to future reactors that present similar nonproliferation challenges. Two methods are considered, and both retain identical power, thermal-hydraulic, and safety profiles as the original reactor design. The conversion options can be implemented at any time during the reactor’s life. The two methods have competing effects on achievable burnup, and they can be combined to produce an optimized core that matches both the fresh-core reactivity and maximum burnup of the original reactor. For the IR-40 example, the optimized design produces weapon-grade plutonium at only about 19% of the rate of the unmodified reactor for the same power level. Additionally, a reactor so converted could not be readily converted back to natural-uranium fuel without replacement heavy water, and it would retain the ability to produce medical isotopes at rates that exceed the original design through the use of LEU targets. |
| first_indexed | 2024-09-23T12:34:18Z |
| format | Article |
| id | mit-1721.1/96944 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:34:18Z |
| publishDate | 2015 |
| publisher | Taylor & Francis |
| record_format | dspace |
| spelling | mit-1721.1/969442023-02-26T02:48:37Z Two Methods for Converting a Heavy-Water Research Reactor to Use Low-Enriched-Uranium Fuel to Improve Proliferation Resistance After Startup Kemp, Ronald S. Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Kemp, R Scott Kemp, R. Scott This article demonstrates the feasibility of converting a heavy-water research reactor from natural to low-enriched uranium in order to slow the production of weapon-usable plutonium, even if the core cannot be physically reconfigured. The analysis was performed for Iran’s IR-40 reactor at Arak in support of negotiations with Iran, but the methods have application to future reactors that present similar nonproliferation challenges. Two methods are considered, and both retain identical power, thermal-hydraulic, and safety profiles as the original reactor design. The conversion options can be implemented at any time during the reactor’s life. The two methods have competing effects on achievable burnup, and they can be combined to produce an optimized core that matches both the fresh-core reactivity and maximum burnup of the original reactor. For the IR-40 example, the optimized design produces weapon-grade plutonium at only about 19% of the rate of the unmodified reactor for the same power level. Additionally, a reactor so converted could not be readily converted back to natural-uranium fuel without replacement heavy water, and it would retain the ability to produce medical isotopes at rates that exceed the original design through the use of LEU targets. 2015-05-08T17:11:57Z 2015-05-08T17:11:57Z 2015-04 2014-11 Article http://purl.org/eprint/type/JournalArticle 2331-7000 http://hdl.handle.net/1721.1/96944 Kemp, R. S. “Two Methods for Converting a Heavy-Water Research Reactor to Use Low-Enriched-Uranium Fuel to Improve Proliferation Resistance After Startup.” Energy Technology & Policy 2, no. 1 (January 2015): 39–46. en_US http://dx.doi.org/10.1080/23317000.2015.1012687 Energy Technology & Policy Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Taylor & Francis Prof. Kemp via Chris Sherratt |
| spellingShingle | Kemp, Ronald S. Two Methods for Converting a Heavy-Water Research Reactor to Use Low-Enriched-Uranium Fuel to Improve Proliferation Resistance After Startup |
| title | Two Methods for Converting a Heavy-Water Research Reactor to Use Low-Enriched-Uranium Fuel to Improve Proliferation Resistance After Startup |
| title_full | Two Methods for Converting a Heavy-Water Research Reactor to Use Low-Enriched-Uranium Fuel to Improve Proliferation Resistance After Startup |
| title_fullStr | Two Methods for Converting a Heavy-Water Research Reactor to Use Low-Enriched-Uranium Fuel to Improve Proliferation Resistance After Startup |
| title_full_unstemmed | Two Methods for Converting a Heavy-Water Research Reactor to Use Low-Enriched-Uranium Fuel to Improve Proliferation Resistance After Startup |
| title_short | Two Methods for Converting a Heavy-Water Research Reactor to Use Low-Enriched-Uranium Fuel to Improve Proliferation Resistance After Startup |
| title_sort | two methods for converting a heavy water research reactor to use low enriched uranium fuel to improve proliferation resistance after startup |
| url | http://hdl.handle.net/1721.1/96944 |
| work_keys_str_mv | AT kempronalds twomethodsforconvertingaheavywaterresearchreactortouselowenricheduraniumfueltoimproveproliferationresistanceafterstartup |