Udomlya, Tver Russia
Number & type of Reactors
2x VVER-1000/302 1 under construction
Net Electric Power as % in 92 of national total
1900 MWe 1% of national total
Major population Centers in a 150 km radius and
total estimated population of 150 km r. region
Approximately 3,000,00 including Tver (former Kalinin), Borovichi, and the outer edge of Moscow
Date of commercial operation start up
or (if unfinished) date of construction start.
Startup 1984, 1986. Third unit practically finished, Fourth unit stopped in 1992.
Rosenergoatom - operator; Atomenergostroy - builder
The State Nuclear Safety Supervision Committee states that the most sensitive operation issues for VVER-1000 reactors are: shell sealing insufficient; control monitoring and electric supply systems should be made more effective, the steam generators' service life should be lengthened, diagnostic devices are lacking. The Russian Min. of Env. expert commission assessing the design of the 2nd phase of the Tver nuclear plant stated, among other things: "The construction of the 4th unit is out of the question. Construction of Unit 3 cannot be continued unless the problems of additional water supply sources for the 3 power units in years of water shortage have been duly solved before it is put in service. Also, all questions concerning the experts' remarks, the development... of rehabilitation actions and population protection, should be solved before continuing construction of Unit 3." In August 1993, both units' 1 and 2 capacity were reduced from 1000 to 700 MW because the region does not need the energy. None-the-less the Government has ordered to continue construction of Unit 3 and that environ-mental appraisal of the designs of the third and fourth units should be completed in 1992 (which they were).