With the continuous efforts of the scientific research personnel of Zhongda Advanced Material, the nuclear power instrument tube independently developed and produced by Zhongda Advanced Material has become the first domestic application of China Nuclear Engineering Company. The products have been successfully used in Changjiang, Fuqing, Qinshan, Tianwan, Fangchenggang, Xiapu, Ningde Supporting national major nuclear power plants in other places.

In the process of R&D and production, the researchers of Zhongda Advanced Material found that the technical indicators of the products involved foreign ASME and RCCM standards, and technical documents of CNPE engineering companies, and the standards were complicated. In 2017, Zhongda Advanced Material promoted the Zhejiang manufacturing group standard for nuclear power instrumentation tubes and successfully released it. In 2019, Zhongda Advanced Material started to apply for the national standard project for nuclear power instrumentation tubes. In December 2020, the "Stainless Steel Seamless Steel Tubes for Nuclear Power Plant Instrument Pressure Impression" drafted by Zhongda Advanced Material was included in the fourth batch of recommended national standard plans in 2020 by the National Standardization Administration. The project plan number is 20204767-T-605, the project With a period of two years, this is the first time that the company has led the preparation of national standards and can fill the gaps in the national standards for products in the industry. The task is arduous and the mission is glorious.

In order to complete the formulation task of "Stainless Steel Seamless Steel Tubes for Pressure Impression of Nuclear Power Plant Instruments" in strict accordance with the requirements and improve the quality level of the draft standard, Zhongda New Material Technology Department has organized technical, quality inspection, quality assurance, production, sales, standardization and other related personnel A total of 13 people held a half-day closed-end internal workshop on draft standards on April 24.

At the seminar, the participants carried out a chapter by chapter on the classification and code, order content, size, shape, weight and allowable deviation, technical requirements, test methods, inspection procedures, cleaning, packaging, marking and quality certificates of steel pipes in the standard. sentence discussion. Participants fully combined their own experience in related fields, actively spoke, and put forward suggestions for improvement. At the end of the meeting, a total of 26 amendments were proposed. The company will finalize the draft standard, and then submit it to the Metallurgical Standards Institute of the National Standards Committee.

This seminar not only completed the internal discussion on the draft of "Stainless Steel Seamless Steel Tubes for Nuclear Power Plant Instrument Pressure Impression", but also allowed everyone present to exchange experiences. The scientific research personnel of Zhongda Advanced Material will not be afraid of difficulties and complete the task of national standard preparation under the guidance of the Institute of Metallurgical Standards. The road is a long way to go, and I will go up and down to search for it.

Zhongda Advanced Material  Sun Li