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Sampling method for quality inspection of tubesheet forgings of reactor steam generator

A technology of steam generator and quality inspection, applied in sampling devices and other directions, can solve the problems that mass production cannot meet the quality and construction period, and achieve the effect of guaranteeing quality and schedule requirements, saving costs and reducing costs

Active Publication Date: 2016-01-20
SUZHOU NUCLEAR POWER RES INST +1
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Problems solved by technology

[0018] The purpose of the present invention is to overcome the defects of the prior art and provide a sampling method capable of fully inspecting the overall quality of the tube sheet forgings of the steam generator, so as to avoid the unsatisfactory quality and construction period in batch production due to immature technology situation occurs

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  • Sampling method for quality inspection of tubesheet forgings of reactor steam generator
  • Sampling method for quality inspection of tubesheet forgings of reactor steam generator
  • Sampling method for quality inspection of tubesheet forgings of reactor steam generator

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Embodiment Construction

[0047] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings:

[0048] Combined with the difficulties in the use and manufacturing process of the steam generator tube sheet forging 10, the study considers that the core of the component is the key area for inspection, and the sampling position of the conventional acceptance test can only be on the outer surface of the end of the tube sheet forging 10, so , the performance obtained by the routine acceptance test can not yet represent the quality status of the tube plate forging 10 core. Therefore, it is necessary to carry out anatomical inspection on the inside of the tube plate forging 10 through the opportunity of evaluation while sampling the sampling position of the routine acceptance test, and conduct a comprehensive evaluation of the internal quality of this type of forging made by the manufacturer to accurately Judging the overall quality of the pa...

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Abstract

The invention provides a sampling method for testing the quality of a tube plate forged piece of a reactor vapor generator. The sampling method comprises the following steps of: firstly, equally dissecting the tube plate forged piece, taking one or multiple dissection pieces as test pieces, carrying out sulphur print inspection, hardness measurement and chemical component analysis on the dissection surfaces of the test pieces before carrying out layering cutting on the test pieces, and then intercepting the test pieces in a layering manner along cross sections perpendicular to the thickness directions of the test pieces for sampling. The sampling method provided by the invention has the advantages that the overall quality of the tube plate forged piece of the reactor vapor generator can be completely inspected, and the complete evaluation on a manufacturing technology of the tube plate forged piece can be carried out, so that the procedure qualification requirements of nuclear power standards RCC-M are satisfied; during mass production, the quality is ensured, the progress requirements are satisfied, and further, the sampling cost is reduced.

Description

technical field [0001] The invention relates to the technical field of reactor steam generators, in particular to a sampling method for quality inspection of tube plate forgings of reactor steam generators. Background technique [0002] At present, the world has entered a new round of nuclear power development. Many countries are actively preparing to build new nuclear power units. However, the production capacity of large-scale castings and forgings in nuclear islands around the world is very limited, and the manufacturing technology is mainly controlled in a few. In the manufacturing plant, this can no longer meet the needs of the development of nuclear power all over the world. Combined with our country's policy of developing nuclear power and the localization of nuclear power equipment, to achieve the goal of my country's nuclear power development plan, it is necessary to realize the localization of reactor steam generator tube plate forgings. In order to truly realize ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/04G01N1/06
Inventor 阚玉琦黄大鹏张绍军吴洪刘璐梁书华朱喜斌刘钊
Owner SUZHOU NUCLEAR POWER RES INST
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