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Tver (Kalinin)

City, Country
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

Accidents and Dangers:

September 1990: pressure rose excessive inside Unit 1's primary circuit condensator installation. Water rose to the machine room roof and started spilling out. Some 20 tons of radioactive water escaped into the environment. 167 tons of spent fuel is stored on-site. The storage leaks, and radioactive waste liquids have reached groundwaters.

Local Contact Group:

Verhkhnovolgy Institute for Ecol. Safety, G. P. Asinkritov
Prospekt Chaykovskogo 70b, k. 5, km. 209,
172 002 Tver, RUSSIA
tel 7 0822 60634

Key Arguments/History

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).


There's enough power from domestic industrial and power plants; the NPP is producing power for other interests than this region.