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Method for producing radioactive isotopes based on commercial pressurized water reactor irradiation target

A technology of radioisotopes and pressurized water reactors, applied in the field of nuclear reactors, can solve the problems of limited instrument tubes, affecting the output of radioisotopes, and the impracticality of the target removal system, achieving a highly practical effect

Inactive Publication Date: 2020-11-06
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The above-mentioned patents still have deficiencies: both patents 1) and 2) require an additional system for moving in and out the target in the reactor structure, which may adversely affect the operation of commercial pressurized water reactors
For some radioactive isotopes with long half-lives or low irradiation yields, it takes a long time to irradiate to achieve the desired yield, and the target does not need to move after being placed in the core, so the 1) and 2) patents The target removal system in is not practical
Patents 1), 2) and 3) all place the target in the fuel assembly instrumentation tube (instrumentation tube), but there are not many instrumentation tubes in the core, and there is only one fuel assembly per box, and some of them require Place neutron detectors, thermocouples, etc., and the actual instrument tubes available for placing irradiation targets are limited, which will directly affect the production of radioisotopes

Method used

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  • Method for producing radioactive isotopes based on commercial pressurized water reactor irradiation target
  • Method for producing radioactive isotopes based on commercial pressurized water reactor irradiation target

Examples

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Embodiment 1

[0041] This embodiment provides a method for producing radioactive isotopes by using commercial pressurized water reactors to irradiate targets 63 Ni's method for the production of radioisotopes by irradiation in a commercial M310 pressurized water reactor 63 Ni: The M310 reactor core contains 157 boxes of square fuel assemblies. After a certain shutdown of the M310 pressurized water reactor, 4 fuel assemblies are selected, and the main components are installed in the 4 empty guide tubes of a single fuel assembly. 62 Ni target, the radial arrangement of the target is shown in the appendix figure 1 , taking one of the diagonals as the reference, it is mirror-symmetrical; 4 fuel assemblies are irradiated according to the raw fuel management plan, and the arrangement in the core is shown in the attached figure 2 , which is centrosymmetric with the geometric center of the core as the base point; when the reactor is running, the main components are 62 The target of Ni occurs in ...

Embodiment 2

[0043] This embodiment provides a method for producing radioactive isotopes by using commercial pressurized water reactors to irradiate targets 14 Method C, Irradiation Production of Radioisotopes Using a Commercial Type M310 Pressurized Water Reactor 14 C: There are 157 boxes of square fuel assemblies in the M310 reactor core. After a shutdown of the M310 pressurized water reactor, 4 fuel assemblies are selected, and targets mainly composed of AlN are installed in the 4 empty guide tubes of a single fuel assembly. For the radial layout of the target, see the attached figure 1 , taking one of the diagonals as the reference, it is mirror-symmetrical; 4 fuel assemblies are irradiated according to the raw fuel management plan, and the arrangement in the core is shown in the attached figure 2 , which is centrosymmetric with the geometric center of the core as the base point; when the reactor is running, the target whose main component is AlN occurs in the neutron irradiation fie...

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Abstract

The invention discloses a method for producing radioactive isotopes based on a commercial pressurized water reactor irradiation target. The radioactive isotopes are produced by using the commercial pressurized water reactor irradiation target; specifically, the operation of producing the radioactive isotopes by using the commercial pressurized water reactor irradiation target comprises the following steps of: S1, during shutdown of a commercial pressurized water reactor, mounting the irradiation target in a guide pipe of a fuel assembly; S2, enabling the irradiation target to enter a reactor core along with the fuel assembly for irradiation, and carrying out reaction in a neutron field environment in the reactor to generate target radioactive isotopes; and S3, after the reactor is shut down again, taking out the irradiation target, and extracting the target radioactive isotopes. Due to the application of the technology, a new method is provided for the production of radioactive isotopes, the neutron field environment in the pressurized water reactor can be more fully utilized, and the economic performance of the pressurized water reactor is improved.

Description

technical field [0001] The invention relates to the technical field of nuclear reactors, in particular to a method for producing radioactive isotopes based on commercial pressurized water reactor irradiation targets. Background technique [0002] At present, the main production methods of radioisotopes include nuclear reactor production, accelerator production, chemical separation and electromagnetic enrichment and purification. In terms of nuclear reactor production, research reactors or production reactors are mainly used for production rather than commercial pressurized water reactors. When the research reactor irradiates the target to produce radioisotopes, the target corresponding to the target nuclide is placed in a specific irradiation hole in the reactor, and after a certain period of irradiation in the neutron field in the reactor, the target is produced through some nuclear reactions. Nuclides. The world's most widely used 99m Tc as an example, 99m Tc is the mo...

Claims

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Application Information

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IPC IPC(8): G21G1/02
CPCG21G1/02
Inventor 王帅唐霄刘晓黎李满仓于颖锐汪量子肖鹏王丹沈云海谢运利蒋朱敏
Owner NUCLEAR POWER INSTITUTE OF CHINA
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