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Atommash completes threaded hole drilling on RNPP’s vessel

BI Report || BusinessInsider

Published: 02:26, 6 March 2021  
Atommash completes threaded hole drilling on RNPP’s vessel

Photo: Courtesy

The Volgodonsk Branch of JSC AEM-technology, part of the machine-building division of Rosatom – Atomenergomash, has completed threading for the main joint studs on the reactor pressure vessel for the second power unit of the Rooppur Nuclear Power Plant (RNPP) in Bangladesh.

The boring of threaded holes is required to seal and secure the main vessel joint to the Upper Unit Cover, which is one of the defining factors for the safe operation of complex equipment. In 10 days, specialists formed a high-precision metric thread with a diameter of 170 mm on 54 holes, said a press release.

The Quality Control Department checked the thread coating and confirmed the high quality of the work performed, it said, adding that during hydraulic tests, two-meter studs will be screwed into the threaded holes and tightened with 50-kilogram nuts.

The thread on the main joint ensures that the reactor is completely sealed.

Nagad
Walton