Kalinin NPP: in March at power unit No. 4 welding of the main circulation pipeline will be started

The meeting participants discussed results of performance of plan of construction-and-assembling operations in February and forecasted work amounts for March of the current year.
The project manager – director of JSC «NIAEP» Valery Igorevich Limarenko reminded that Kalinin-4 is object of the first priority for the branch. At present, mounting of the main technological equipment is carried out at the power unit.
Thus, in the past month in the powerhouse hall mounting of separator-steamoverheater is performed; at the open transformers installation mounting of transformer RTSN No. 5 is finished; preparedness of flexible connections from the main vessel to open distribution device is ensured (ORU-330). Reactor thrust ring mounting is in progress.
The key task of the current month is beginning of welding of the Main circulation pipeline (MCP). Start of this operation is planned for March 25. With that, general construction works on rigging of reactor compartment are to be completed, three steam generators are to be mounted, more than 20 premises should be prepared for mounting. At that, as director of Kalinin NPP Leonid Ivanovich Martynovchenko emphasized, terms and quality of the premises delivered for equipment mounting should stay under special control, as well as observation of safety requirements at work at construction objects of the nuclear power sector.
KalininNPP is branch of JSC «Concern Rosenergoatom», 100% of shares of which belong to JSC «Atomenegroprom». The plant is located in the north of Tver region in Udomelsky district. Kalinin nuclear power plant comprises three active power units with water-moderated water-cooled power reactors (VVER-1000) of 1000 MW electric output each. Power unit No. 4 is under construction. It is the largest investment project of Tver region.
JSC Nizhny Novgorod engineering company «Atomenergoproject» (JSC «NIAEP») – since June of 2007 executes functions of general contractor at construction of power unit No. 4 of Kalinin NPP. The company is part of JSC «Atomenergoprom». Renders engineering services on designing and construction of NPPs and power units: performs surveying activity, designing, construction management, carries out field supervision and takes part in preparing of nuclear power sector objects to industrial operation. Executes functions of General contractor at construction of objects, in supply of materials and equipment for NPPs, balancing and commissioning.