Page 14 - AsiaElec Week 17 2022

AsiaElec NUCLEAR AsiaElec

Rosatom unit complete reactor

vessel for China’s Xudabao NPP

CHINA ROSATOM has confirmed that it has manufac- properties of the metal. The process of heating
tured the upper half of the reactor pressure ves- and holding is done at a maximum temperature
sel (RPV) for unit 3 of China’s Xudabao NPP in of 620 degrees for three days.
Liaoning Province. Control checks are then undertaken includ-
The Volgodonsk branch of AEM-Technol- ing visual-measuring, ultrasonic tests, magnetic
ogies Atommash, which is part of Rosatom’s particle flaw detection and x-ray gammagraphy
machine-building division Atomenergomash, of the welded joints. Corrosion-resistant surfac-
has completed the welding of circumferential ing on the inside of the semi-hull will follow. For
seams on the upper half of the RPV. Xudabao units 3 and 4, two RPVs with internals,
The work lasted 25 days with continuous a cover and an upper unit and two sets of steam
heating at 150-170 degrees Celsius in the area of generators are being manufactured.
welded joints. It took 4,700 kg of flux and 3,300 The design and construction of the facility
kg of wire to weld the circumferential seams. is being carried out by Rosatom’s Engineer-
The component was then heated to 300 ing Division, with commissioning of the units
degrees and moved to a furnace for heat scheduled for 2027 and 2028.™
treatment to obtain the required mechanical

P14 www. NEWSBASE .com Week 17 27•April•2022