A kind of reference temperature t0 test method of RPV steel 0.5t-ct sample after irradiation

A technology of 0.5T-CT and reference temperature is applied in the field of post-irradiation inspection to meet the requirements of radiation protection, reduce software costs, and improve technical reserves.

Active Publication Date: 2017-10-24
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, only a few units in China have carried out the reference temperature T of unirradiated bending samples and CT samples. 0 Test, reference temperature T of RPV steel CT sample after irradiation 0 Test still unreported

Method used

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  • A kind of reference temperature t0 test method of RPV steel 0.5t-ct sample after irradiation
  • A kind of reference temperature t0 test method of RPV steel 0.5t-ct sample after irradiation
  • A kind of reference temperature t0 test method of RPV steel 0.5t-ct sample after irradiation

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Experimental program
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Effect test

Embodiment

[0061] A reference temperature T of RPV steel 0.5T-CT sample after irradiation 0 The test method includes the following steps:

[0062] S1. Check the test system and samples before the test, identify and record the sample number,

[0063] S2. Through the manipulator, the COD gauge auxiliary loading device is used to complete the loading of the COD gauge 4 and the sample 12, which includes the following sub-steps:

[0064] S21. Put the COD gauge 4 into the COD gauge loading slot 3 of the COD gauge auxiliary loading device through the manipulator;

[0065] S22. Screw in the screw rod 7 step by step from the left and right sides of the manipulator, and press the gauge arm 5 of the COD gauge 4 close to the limit position, so that the distance between the two gauge arms 5 is smaller than the bayonet width of the sample;

[0066] S23. Load the sample 12 into the sample loading slot 2 of the COD gauge auxiliary clamping device through the manipulator. In order to improve the stabil...

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Abstract

The invention discloses a method for testing the reference temperature T0 of RPV steel 0.5T-CT samples after irradiation, comprising the following steps: S1, sample installation; S2, test execution; S3, sample pre-crack inspection; S4, data analysis . The beneficial effect of the present invention is: select RPV steel 0.5T-CT sample after irradiation as research object, formulate reasonable and reliable, the reference temperature T0 test method that carries out under the situation that has very strong gamma ray, the whole of test The process is operated by manipulators, which avoids the radiation exposure of personnel during the operation process, meets the radiation protection requirements, and improves the post-irradiation inspection methods and technical reserves.

Description

technical field [0001] The invention relates to the field of post-irradiation inspection, in particular to a reference temperature T of RPV steel 0.5T-CT sample after irradiation 0 testing method. Background technique [0002] "Safety and high efficiency" is the policy of my country's nuclear power development, and safety is the lifeline of nuclear power. Especially after the "Fukushima incident in Japan", it has aroused great concern from the public. In nuclear power safety, the reactor pressure vessel (RPV) is the most important part. It is a key part of the pressure boundary of the primary circuit coolant. It is loaded with the core and all components in the reactor. It seals the primary circuit coolant and maintains its pressure. A strong core provides radiation shielding. The operating conditions of RPV are very harsh. In addition to being subjected to high temperature, high pressure, fluid erosion, corrosion, etc., strong neutron irradiation makes the performance of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/18G01N3/04
Inventor 孙凯冯明全李国云张海生温榜蒋国富莫华均雷阳崔永海黄娟李福荣
Owner NUCLEAR POWER INSTITUTE OF CHINA
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