Tomsk Polytechnic University organizes the Intensive Course of the Russian Language twice a year (in August and January) 3 weeks before the beginning of studies. The course also includes cultural programm and excursions around the city of Tomsk.
It's organized for the foreign exchange students to teach every day Russian, which will be especially useful for those students who would stay at TPU for the whole semester.
For more information: http://russian.tpu.ru/en/courses-and-programs/for-foreigners/summershool