Seversk
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Seversk

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Seversk

Seversk (Russian: Се́верск, IPA: [ˈsʲevʲɪrsk]) is a closed city in Tomsk Oblast, Russia, located 15 kilometers (9.3 mi) northwest of Tomsk on the right bank of the Tom River. The population was 108,590 at the 2010 census and 109,106 at the 2002 census.

It was previously known as Pyaty Pochtovy (until 1949)[clarification needed] and Tomsk-7 (until 1992).

The city is located 15 kilometers (9.3 miles) northwest of Tomsk on the right bank of the Tom River.

Seversk has a humid continental climate (Köppen climate classification Dfb) with warm summer. The annual average temperature is 0.6 °C (33.1 °F). The average temperature in January is between −21 and −13 °C (−6 and 9 °F). The average temperature in July is 19.2 °C (66.6 °F). The total annual rainfall is 530 millimeters (21 in).

Founded in 1949, it was known as Pyaty Pochtovy (Пя́тый Почто́вый, lit. the Fifth Postal) until 1954 and as Tomsk-7 (Томск-7) until 1992.[citation needed] City status was granted to it in 1956.[citation needed]

Within the framework of administrative divisions, it is, together with five rural localities, incorporated as Seversk City Under Oblast Jurisdiction—an administrative unit with the status equal to that of the districts. As a municipal division, Seversk City Under Oblast Jurisdiction is incorporated as Seversk Urban Okrug.

Seversk is the site of the Siberian Chemical Combine, founded in 1954. It comprises several nuclear reactors and chemical plants for separation, enrichment, and reprocessing of uranium and plutonium. Following an agreement in March 2003 between Russia and the United States to shut down Russia's three remaining plutonium-producing reactors, two of the three plutonium producing reactors (the two that are situated in Seversk, at the Sibirskaya Nuclear Power Plant) were shut down.

Nuclear warheads are produced and stored on the premises. One of the most serious nuclear accidents at SGCE[further explanation needed] occurred on April 6, 1993, when a tank containing a highly radioactive solution exploded (see § Tomsk-7 explosion).

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