Chernobyl Nuclear Disaster - One Minute History

Soviet engineers were tasked with a safety test at Chernobyl's reactor 4, but untrained staff and protocol failures led to a catastrophic explosion, spreading radioactive contamination. Firefighters worked to extinguish the fire, exposing many to lethal radiation. By December 1986, reactor 4 was encased in a sarcophagus to limit contamination. In 2017, a new structure was added to aid cleanup, expected to finish by 2065.

What was the main issue with the engineers conducting the safety test at Chernobyl?

• They were using outdated equipment.

• They refused to follow orders.

• They were not present at the site.

• They were not trained for the procedure.

What was the consequence of the failure to follow protocol during the safety test?

• The test was postponed.

• The reactor was shut down safely.

• The engineers were promoted.

• An uncontrolled nuclear chain reaction occurred.

How long did the reactor core fire burn after the explosion?

• Three days

• Nine days

• One week

• One month

What was constructed in December 1986 to contain the radioactive spread?

• A water reservoir

• A protective sarcophagus

• A concrete wall

• A new reactor

When is the cleanup effort of the Chernobyl site scheduled to be completed?

• 2085

• 2045

• 2025

• 2065