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Questions and Answers
What occurs when a flammable vapour cloud spreads from too rich, through the flammable range to too lean?
What occurs when a flammable vapour cloud spreads from too rich, through the flammable range to too lean?
- Cloud does not react
- Immediate explosion
- Edges start to burn through deflagration (correct)
- Cloud disperses through containment
What is the term for the concentration of a substance below which it will not ignite?
What is the term for the concentration of a substance below which it will not ignite?
- Toxic Release Level
- Upper Explosive Limit (UEL)
- Flammable Range Limit
- Lower Explosive Limit (LEL) (correct)
What can cause a vapour cloud to detonate?
What can cause a vapour cloud to detonate?
- Low flame velocity
- High flame velocity (correct)
- Small cloud size
- Natural convection
What is the term for the release of toxic chemicals into the environment?
What is the term for the release of toxic chemicals into the environment?
What is the environment defined as in the context of process safety?
What is the environment defined as in the context of process safety?
What is the purpose of the Emergency Planning and Community Right-to-Know Act?
What is the purpose of the Emergency Planning and Community Right-to-Know Act?
What type of explosion can occur when a vapour cloud is confined?
What type of explosion can occur when a vapour cloud is confined?
What is the term for a substance that can cause severe illness, poisoning, birth defects, disease, or death when ingested, inhaled, or absorbed by living organisms?
What is the term for a substance that can cause severe illness, poisoning, birth defects, disease, or death when ingested, inhaled, or absorbed by living organisms?
What is the term for the maximum concentration of a substance that will ignite?
What is the term for the maximum concentration of a substance that will ignite?
What is the term for a fire that spreads quickly, often in a sudden and unexpected manner?
What is the term for a fire that spreads quickly, often in a sudden and unexpected manner?
