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Control assembly materials for water reactors: Experience, performance and perspectives. Proceedings of a technical committee meeting

Abstract

The safe, reliable and economic operation of water cooled nuclear power reactors depends to a large extent upon the reliable operation of control assemblies for the regulation and shutdown of the reactors. These consist of neutron absorbing materials clad in stainless steel or zirconium based alloys, guide tubes and guide cards, and other structural components. Current designs have worked extremely well in normal conditions, but less than ideal behaviour limits the lifetimes of control materials, imposing an economic penalty which acts as a strong incentive to produce improved materials and designs that are more reliable. Neutron absorbing materials currently in use include the ceramic boron carbide, the high melting point metal hafnium and the low melting point complex alloy Ag-In-Cd. Other promising neutron absorbing materials, such as dysprosium titanate, are being evaluated in the Russian Federation. These control materials exhibit widely differing mechanical, physical and chemical properties, which must be understood in order to be able to predict the behaviour of control rod assemblies. Identification of existing failure mechanisms, end of life criteria and the implications of the gradual introduction of extended burnup, mixed oxide (MOX) fuels and more complex fuel cycles constitutes the first step in a search for  More>>
Authors:
"NONE"
Publication Date:
Feb 01, 2000
Product Type:
Technical Report
Report Number:
IAEA-TECDOC-1132
Reference Number:
EDB-00:103379
Resource Relation:
Conference: Technical committee meeting on control assembly materials for water reactors: Experience, performance and perspectives, Vienna (Austria), 12-15 Oct 1998; Other Information: Refs, figs, tabs; PBD: Feb 2000
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BORON CARBIDES; CADMIUM; CONTROL ELEMENTS; FUEL ASSEMBLIES; FUEL CYCLE; HAFNIUM; IAEA; INDIUM; LEADING ABSTRACT; MATERIALS TESTING; MIXED OXIDE FUELS; NEUTRON ABSORBERS; PHYSICAL RADIATION EFFECTS; REACTOR SAFETY; SHIM RODS; STAINLESS STEELS; WATER COOLED REACTORS; ZIRCONIUM BASE ALLOYS; MEETINGS
OSTI ID:
20045868
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 1011-4289; TRN: XA0053626008481
Availability:
Available from INIS in electronic form
Submitting Site:
INIS
Size:
265 pages
Announcement Date:

Citation Formats

Control assembly materials for water reactors: Experience, performance and perspectives. Proceedings of a technical committee meeting. IAEA: N. p., 2000. Web.
Control assembly materials for water reactors: Experience, performance and perspectives. Proceedings of a technical committee meeting. IAEA.
2000. "Control assembly materials for water reactors: Experience, performance and perspectives. Proceedings of a technical committee meeting." IAEA.
@misc{etde_20045868,
title = {Control assembly materials for water reactors: Experience, performance and perspectives. Proceedings of a technical committee meeting}
abstractNote = {The safe, reliable and economic operation of water cooled nuclear power reactors depends to a large extent upon the reliable operation of control assemblies for the regulation and shutdown of the reactors. These consist of neutron absorbing materials clad in stainless steel or zirconium based alloys, guide tubes and guide cards, and other structural components. Current designs have worked extremely well in normal conditions, but less than ideal behaviour limits the lifetimes of control materials, imposing an economic penalty which acts as a strong incentive to produce improved materials and designs that are more reliable. Neutron absorbing materials currently in use include the ceramic boron carbide, the high melting point metal hafnium and the low melting point complex alloy Ag-In-Cd. Other promising neutron absorbing materials, such as dysprosium titanate, are being evaluated in the Russian Federation. These control materials exhibit widely differing mechanical, physical and chemical properties, which must be understood in order to be able to predict the behaviour of control rod assemblies. Identification of existing failure mechanisms, end of life criteria and the implications of the gradual introduction of extended burnup, mixed oxide (MOX) fuels and more complex fuel cycles constitutes the first step in a search for improved materials and designs. In the early part of this decade, it was recognized by the International Working Group on Fuel Performance and Technology (IWGFPT) that international conferences, symposia and published reviews on the materials science aspects of control assemblies were few and far between. Consequently, the IWGFPT recommended that the IAEA should rectify this situation with a series of Technical Committee meetings (TCMs) devoted entirely to the materials aspects of reactor control assemblies. The first was held in 1993 and in the intervening five years considerable progress has been made. In bringing together experts in the materials science and materials engineering of control assembly materials, the 1993 meeting and the current one are helping to fill a gap in the information exchange opportunities in this important branch of nuclear research and development. The second TCM, entitled Control Assembly Materials for Water Reactors: Experience, Performance and Perspectives, was attended by thirty-one participants from fourteen countries, nineteen papers were presented and are reproduced in this proceedings together with a summary of the meeting.}
place = {IAEA}
year = {2000}
month = {Feb}
}