VT-1 reactor

{{Short description|Small nuclear fission reactor for naval propulsion cooled by a liquid metal}}

{{onesource|date=December 2009}}

The VT-1 reactor was the nuclear fission reactor used in a pair to power the {{ship|Soviet submarine|K-27||2}} as part of the Soviet Navy's Project 645 Кит-ЖМТ. It is a liquid metal cooled reactor (LMR), using highly enriched uranium-235 fuel to produce 73 MW of power.

K-27 was a {{sclass2|November|submarine|0}} first generation nuclear submarine, and the only one of its class fitted with liquid metal cooled reactors. However the seven-member {{sclass2|Alfa|submarine|4}} were subsequently fitted with liquid metal cooled reactors. Its usage in the K-27 led to a nuclear incident with 9 fatalities.{{cite web |url=http://www.johnstonsarchive.net/nuclear/radevents/radevents1.html |title=Deadliest radiation accidents and other events causing radiation casualties |author=Johnston, Robert |date=September 23, 2007 |publisher=Database of Radiological Incidents and Related Events}}

It was developed by OKB Gidropress in cooperation with IPPE.