Nuclear tests: databases and other material--Johnston's Archive

RDS-37 nuclear test, 1955

compiled by Wm. Robert Johnston
last modified 6 November 2006

Date: 22 November 1955

Location: Matochkin Shar, Novaya Zemlya, Russia, USSR

Type of event: accidental radioactive release from underground nuclear test

Description:

On 22 November 1955 the USSR conducted its first test of a multi-stage thermonuclear device. The device, the RDS-37, was designed as a nuclear gravity bomb with a full yield of about 3 megatons. The test version was modified to reduce the yield to an expected 1.45 megatons, to reduce the risk to the local population. It was airdropped from a Tupolev-95 bomber over Technical Area Sh ("Ground Zero") at the Semipalatinsk Test Site in Kazakhstan. It detonated with a yield of 1.6 megatons at altitude of 1,550 meters. Civilians in nearby villages had been warned as a precaution, but one child who ran back into a house immediately after the detonation was killed when the blast wave arrived and caused the roof to collapse. A trench collapsed onto soldiers observing the detonation, killing one. Six additional injuries occurred.

Consequences: 2 fatalities, 6 injuries.

References:


© 2006 by Wm. Robert Johnston.
Last modified 6 November 2006.
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