Atommash starts stamping pipe blanks for the Kudankulam NPP

The VolgodonskBranch of JSC ‘AEM-technology’ (part of the machine-building division ofRosatom –  Atomenergomash) startedstamping pipe blanks – the Bends of the main circulation pump (MCP) for Units 5and 6 of the ‘Kudankulam’ NPP (India). The work was carried out in two stagesat the thermal press site of Atommash.

At first, thespecialists performed ovalization – the blanks by means of a press were giventhe necessary oval shape. At the second stage, the bending of items wasperformed.

After atwo-stage holding in a furnace at a temperature of 870 to 1080 degrees, theBend was placed in a specialized stamp. Under the pressure of the press with a forceof 6,000 ton-forces, the blank was bent at 29 degrees.

After stamping,the items are subjected to machining. In total, Atommash will manufacture eightbends of the MCP for two units of the plant.

The maincirculation pump is a first class safety item. It circulates the coolant at anuclear power plant through the pipes of the main circulation pipeline from thereactor to the steam generator and vice versa.


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