Life Critical Activities Flashcards
6 cards from real Safety Trained Supervisor practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Life Critical Activities flashcards as text
What are life critical activities in workplace safety?
Answer: High-risk work with potential for fatal or life-altering outcomes requiring strict controls
Life critical activities have the highest potential for fatal or permanently disabling outcomes.
What is the purpose of a permit-to-work system for life critical activities?
Answer: Formal process verifying all controls are in place and authorized before high-risk work
PTW ensures all controls, isolations, and authorizations are verified before high-risk work begins.
Why is energy isolation (lockout/tagout) life critical?
Answer: Unexpected energy release during maintenance can cause immediate death
Unexpected energization during maintenance can cause immediate death or catastrophic injury.
What atmospheric testing is required before confined space entry?
Answer: Oxygen, flammable gases, and toxic contaminants in that order
Testing must check oxygen, flammables, then toxics in that specific sequence.
What is a hot work permit?
Answer: Required before any work producing sparks, flames, or heat sufficient to ignite nearby materials
Required before operations producing sparks, flames, or heat that could ignite nearby materials.
What is the line of fire concept?
Answer: Zone where a worker is in the path of moving objects, released energy, or hazardous materials
Line of fire is the danger zone where a worker could be struck by moving objects or released energy.