Published February 2000
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High temperature study of the control rod behaviour under accident conditions
- 1. Institute of Physics and Power Engineering, Obninsk (Russian Federation)
- 2. Moscow Polimetal Plant, Moscow (Russian Federation)
Description
Control rod behaviour under accident conditions is considered. A comparative assessment of various types of absorbers is carried out in this respect. It was found that the best absorbers are dysprosium based absorbers. Dysprosium based control rods show no failure at temperatures below 1300 deg. C. Boron based control rods may be liquefied at a temperature of 1150 deg. C. Besides, the cladding may burst at lower temperature, due to the released helium. Experiments indicate that the absorber materials may initiate severe core damage under severe accidents. The beginning of core structure degradation is caused by the boron control rod liquefaction. (author)
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Additional details
Publishing Information
- Imprint Title
- Control assembly materials for water reactors: Experience, performance and perspectives. Proceedings of a technical committee meeting
- Imprint Pagination
- 265 p.
- Journal Page Range
- p. 245-258
- ISSN
- 1011-4289
- Report number
- IAEA-TECDOC--1132
Conference
- Title
- Experience, performance and perspectives
- Acronym
- Technical committee meeting on control assembly materials for water reactors
- Dates
- 12-15 Oct 1998
- Place
- Vienna (Austria)
INIS
- Country of Publication
- International Atomic Energy Agency (IAEA)
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 31008500
- Subject category
- S22: GENERAL STUDIES OF NUCLEAR REACTORS; S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BORON; CONTROL ELEMENTS; DYSPROSIUM; LIQUEFACTION; NEUTRON ABSORBERS; PHYSICAL RADIATION EFFECTS; TEMPERATURE DEPENDENCE
- Descriptors DEC
- ELEMENTS; METALS; RADIATION EFFECTS; RARE EARTHS; REACTOR COMPONENTS; SEMIMETALS; THERMOCHEMICAL PROCESSES
Optional Information
- Notes
- 10 figs, 4 tabs