NEBOSH Practice Test

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What does the term BLEVE stand for in relation to explosions?

Boiling Liquid Evaporating Vapor Explosion
Boiling Liquid Emission and Vapor Escape
Boiling Liquid Enhancing Vapor Explosion
Basic Liquids Evaporating during Vexatious Explosion

The correct answer is: Boiling Liquid Evaporating Vapor Explosion

The term BLEVE stands for Boiling Liquid Expanding Vapor Explosion. This phenomenon occurs when a pressurized vessel containing a liquid is subjected to a heat source, causing the liquid to boil and generate vapor, which increases pressure within the vessel. If the structural integrity of the vessel is compromised, the sudden release of this high-pressure vapor can lead to a violent explosion, resulting in significant damage and hazards. Understanding BLEVE is crucial in safety management, particularly in industries that handle liquefied gases or pressurized liquids. It highlights the importance of maintaining proper temperature controls and pressure relief systems in storage and handling processes to prevent accidents that can arise from rapid vaporization and explosion. Recognizing the potential for BLEVE allows safety professionals to implement appropriate safety measures and risk assessments, ensuring a safer work environment.