Mind the “big country” casting “the country’s heavy weapon” —— “National Worker Pioneer” Dongfang Boiler Container No. 2 Nuclear Power Assembly and Welding Operation Team

Mind the “big country” casting “the country’s heavy weapon” —— “National Worker Pioneer” Dongfang Boiler Container No. 2 Nuclear Power Assembly and Welding Operation Team

Photo by Zigong Net reporter Li Qiuyue Gou Si

On April 24, the reporter came to Dongfang Boiler Co., Ltd. of Dongfang Electric Group and walked into the production workshop. The machine roared and the welding flowers flickered. More than ten workers showed a “fast” around the welding tasks of special containers and Changjiang voltage regulators. Rhythm, full load, high efficiency” working state.

The reporter learned that the nuclear power operation team of Dongfang Boiler Co., Ltd. container plant No. 2 branch of Dongfang Electric Group, composed of 76 skilled craftsmen, is mainly responsible for the production of nuclear power voltage stabilizers, safety injection boxes, supports and other key nuclear power parts (pieces) contracted by the company. Manufacturing tasks. Since its establishment 17 years ago, the operation team has led the team with “artisan spirit”, expressed dedication with “red original intention”, talked about confidence with “situation and task”, and looked at performance with “under pressure and forge ahead”, and successfully completed a number of core components of nuclear power units. , to become the industry leader and pioneer. In 2023, the working group will be awarded the title of “National Worker Pioneer”.

“On October 17, 2021, the first Sichuan-made ‘Hualong One’ Zhangzhou Nuclear Power Plant Unit 1 voltage regulator was completed and shipped in our Dongfang Boiler Heavy Capacity Workshop.” Gan Judong, the chief operator, was particularly proud when talking about this period of hard work. He told reporters that because the heater element is a purely imported part and its production precision is high, repeated welding is not allowed. Once a welding defect occurs, the expensive heater element will be scrapped directly, and the stability and accuracy of welding are extremely high. . The Zhangzhou voltage stabilizer is a new technology. The number of heater bushings has increased from 63 to 84. The design standard is higher and the welding workload is greater, which has become the “hard bone” of the voltage stabilizer project. In order to ensure the smooth completion of production tasks, the old and new welders in the operation team need to work continuously for up to 7 hours a day under high temperature in a completely enclosed space of less than 9 square meters isolated by multi-layer steel plates. Finally, after 16 days of hard work, the welding work of 84 heater elements of Hualong No. 1 voltage stabilizer was successfully completed, achieving the highest level of the first welding of nuclear power voltage stabilizer heater elements.

In June 2017, the first safety injection box of Unit 3 of Fangchenggang Phase II, which adopted the third-generation nuclear power technology of “Hualong One” independently developed by my country, entered the so-called “devil process” stainless steel layer surfacing process on the inner wall of the ring seam of the final assembly. In the operation group, 9 outstanding welders with combat experience, good physical fitness, strong psychological quality, excellent skills, and the ability to endure hardships and fight tough battles formed a commando team to undertake this tough task. After a full 18 days and nights of continuous fighting, and the test of a high temperature of 50°C, it finally gnawed down the hard bone of the process that is recognized as the “devil”.

“In recent years, all the staff of our nuclear power operation team have been thinking of ‘the biggest of the country’, casting the ‘heavy weapon of the country’, conquering one technical fortress after another, creating one manufacturing miracle after another, and successively completed the safety of the first Hualong No. Injection boxes, voltage regulators, a major national project and many other national key projects. In the next step, we will continue to carry forward the spirit of model workers, labor spirit, and craftsman spirit, and build a more refined, responsible, and accomplished team for Make more contributions to the country’s energy construction.” Gan Judong said.

Editor: Ran Huayang