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Reference temperature T0 test method for irradiated RPV steel 0.5T-CT sample

A 0.5T-CT, reference temperature technology, applied in the field of post-irradiation inspection, to solve the problem of clamping, avoid radiation exposure, and meet the effects of radiation protection requirements

Active Publication Date: 2015-12-09
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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  • Reference temperature T0 test method for irradiated RPV steel 0.5T-CT sample
  • Reference temperature T0 test method for irradiated RPV steel 0.5T-CT sample
  • Reference temperature T0 test method for irradiated RPV steel 0.5T-CT sample

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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 reference temperature T0 test method for an irradiated RPV steel 0.5T-CT sample. The method includes the steps of: S1. sample installation; S2. test execution; S3. sample pre-cracking inspection; and S4. data analysis. The method provided by the invention selects irradiated RPV steel 0.5T-CT sample as the research object, makes a reasonable and reliable reference temperature T0 test method that is carried out under the circumstance of very strong gamma rays, the whole test process adopts manipulator operation, avoids radiation of workers in the operation process, meets the radiation protection requirement, and improves postirradiation examination means and technological reserve.

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 Test Methods. 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 ma...

Claims

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Application Information

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Patent Type & Authority Applications(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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