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Neutron sealed source

一种中子源、中子的技术，应用在中子源、放射源、减少温室气体等方向，能够解决热量高、破坏囊体完整性等问题

Pending Publication Date: 2021-02-26
ILLINOIS TOOL WORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This configuration could result in heat generation from both fission and decay high enough to melt the cermet filaments during operation within a nuclear reactor, thereby compromising the integrity of the capsule

Method used

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Examples

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Embodiment Construction

[0019] Referring now in detail to the drawings, in which like reference numerals indicate like elements throughout the several views, it can be seen Figure 3 to Figure 10 An embodiment of a sealed neutron source 10 of the present disclosure is shown in FIG. In an exemplary embodiment, the package may be formed from a stainless steel rod of type 304L, condition A (annealed), hot or cold worked, UNS 30403, while the active source is typically a cermet wire (formed by compacting and sintering metal and ceramic) Formed, cermet filaments contain chemical forms of Pd / Cf 2 o 3 Californium-252 / Palladium; (Californium(III) oxide). Those skilled in the art will recognize a range of equivalents. In particular, alternative materials for packaging are nickel, titanium and zirconium.

[0020] Such as Figure 3 to Figure 6 As shown, the sealed neutron source 10 includes an internally integrated cylindrical insert 12 having a relatively solid cylindrical block portion 14 with a closed o...

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PUM

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Abstract

A neutron sealed source (10) holds cermet wire sources (200), such as Californium-252 / Palladium wires, in separate blind apertures (20, 22, 24, 26) within a stainless steel block (14). The stainless steel block is part of an inner encapsulation (12) and includes blind apertures arranged in rotational symmetry for receiving the cermet wire sources. The cermet wire sources are separated from each other and the fission and decay heat is rejected through the stainless steel block.

Description

[0001] Background of the invention [0002] This application claims priority under 35 U.S.C. §119(e) to U.S. Application Serial No. 15 / 967,720, filed May 1, 2018, the contents of which are hereby incorporated by reference in their entirety for all purposes. technical field [0003] The present disclosure relates to a neutron sealed source that holds a cermet wire source (eg, californium-252 / palladium wire) in individual blind holes within a stainless steel block whereby the cermet is expelled through the stainless steel block Fission heat and decay heat generated inside the silk source. Background technique [0004] In the prior art, it is known to use californium-252 as a neutron source to provide stable nuclear chain reaction initiation during nuclear reactor start-up. This provides a more predictable, safe and reliable start-up than relying solely on spontaneous or delayed fission within the reactor fuel rods. This neutron source increases the neutron flux, thereby inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21G4/02G21C7/34
CPCG21G4/02G21C7/34Y02E30/30G21F5/10G21G4/06
Inventor 马克·沃斯
Owner ILLINOIS TOOL WORKS INC