People of the Revolution and the USSR

Soviet Union Soviet communism 1962–1986 ✕ Acute radiation syndrome

The first firefighter at Chernobyl, who climbed onto the roof of Unit 3 without being told of the radioactive danger

'Everything turned out okay. We will live until we're a hundred'... from a letter to his wife, written from his Moscow hospital bed as radiation destroyed his body.

Volodymyr Pravyk was a Soviet firefighter and lieutenant in the MVD who commanded the Third Watch of Chernobyl Nuclear Power Plant's Fire Brigade No. 2 (ВПЧ-2). When Reactor 4 exploded on 26 April 1986, his unit was first to respond: within two minutes Pravyk was on the scene, and at 01:56 he led a team onto the roof of Unit 3 to prevent the fire from spreading to the still-operational reactor, working in fields later estimated at over 6,000 roentgens per hour. He received the highest confirmed radiation dose of any Chernobyl victim, 1,520 REM (nearly triple a lethal dose), and died of acute radiation syndrome in Moscow on 11 May 1986, never having been told of the radioactive danger.

Soviet Union Soviet communism

The chief designer of the Volga inflatable airlock that made Leonov's spacewalk possible

On 18 March 1965, Alexei Leonov opened the hatch of the Volga airlock after it had inflated in orbit and stepped into space.

Boris Mikhailov was the chief designer at Engineering Plant 918 (later NPO Zvezda) in Tomilino near Moscow, where in mid-1964 he led the team that designed, built, and tested the Volga inflatable airlock in just nine months. A metal airlock would not fit the Voskhod spacecraft, so his flexible structure, folded for launch and inflated on orbit, was the only solution. On 18 March 1965, Alexei Leonov walked into space through this airlock in humanity's first spacewalk.