T/NXCL 019-2023 Specification for Antimony Powder Used in Neutron Sources

Scope

Main technical content: This document specifies the technical requirements, test methods, inspection items and methods, packaging, etc. of antimony powder for secondary neutron sources. As an important component of nuclear power reactors, secondary neutron sources are mainly used to increase the neutron flux rate level during the startup of nuclear reactors, thus ensuring the safe startup of nuclear reactors. Among them, antimony-beryllium core blocks are the main components of secondary neutron source assemblies. Antimony-beryllium core blocks are obtained by mixing antimony powder and beryllium powder and pressing them into corresponding specifications by powder metallurgy methods. The application demand for antimony-beryllium core blocks for secondary neutron sources comes from China North Nuclear Fuel Element Co., Ltd., China East Engineering Co., Ltd., Shanghai Nuclear Engineering Research and Design Institute, and China Nuclear Power Construction Nuclear Fuel Element Co., Ltd. Based on the technical requirements of the above-mentioned demand units, through a large number of experimental studies, many technical difficulties and process problems in the preparation process of antimony powder, particle size requirements, and impurity control have been solved. The inspection method of antimony powder has been determined, and a standardized process system for antimony powder for secondary neutron sources has been established. The performance of the products produced meets the application requirements, and it has been used in large quantities for many years, with high technical added value and great social benefits.

Development Information

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