4th Test Department

4-е Испытательное Управление

Military Unit: 12445

Activated 18.3.66 in Plesetsk, Arkhangelsk Oblast, under the Plesetsk Test Center (53rd NIIP).

Department for test & development of solid propellant missiles.

Organisation 1967:

• 8th independent Engineering & Test Unit (RT-2/15 development)

Organisation 1977:

• 8th independent Engineering & Test Unit (RT-2/23 development) with 10 silos
• 2nd independent Engineering & Test Unit (Temp-2S development) with 2 pads

1981 renamed 2nd Scientific Experimental Department (4th NIU).

Organisation 1989:

• 8th independent Engineering & Test Unit (RT-23 development) with 5 silos
• 196th OSB
• Assembly-line Brigade (military unit: 13991-F) - from 1980
• Quality-control and Testing Base (military unit: 35547) - from the 6th Test Department in 1984

1998 disbanded, and absorbed by the Test Center for stationary and mobile missile systems.