Hazard Identification and Control Flashcards
7 cards from real CTSP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Hazard Identification and Control flashcards as text
A tree assessment reveals a basal cavity that occupies more than one-third of the trunk's circumference. The most appropriate risk management action is:
Answer: Remove or significantly reduce the tree after confirming no internal sound wood remains
A basal cavity exceeding one-third of the trunk circumference typically indicates insufficient residual wall thickness to support the tree safely, often warranting removal.
Which of the following actions BEST demonstrates the hierarchy of hazard controls in arboricultural work?
Answer: Eliminating the hazard by removing the dead branch before beginning aerial work
Elimination is the highest level of hazard control in the hierarchy, and removing the hazardous branch before work is the strongest control available.
What does a 'confined space' designation mean for a tree worker operating near a utility vault or below-grade structure?
Answer: Entry requires specific permits, atmospheric testing, and rescue capability
Permit-required confined spaces demand atmospheric testing, a confined space entry permit, and an emergency rescue plan before any worker enters.
During aerial work in a tree, a climber notices the branch she is attached to has significant bark inclusion. She should:
Answer: Shift her tie-in point to a structurally sound branch before proceeding
A climber must relocate her tie-in point to a sound anchor when a structural defect is discovered, as a branch with included bark may fail under load.
What is the role of a spotter during mechanical equipment operations in a tree crew?
Answer: To watch for overhead hazards and direct the equipment operator via clear signals
A spotter watches for hazards the equipment operator cannot see—especially overhead—and communicates using pre-established signals to prevent collisions and accidents.
Lightning-struck trees present which specific hazard that may not be immediately visible?
Answer: Internal steam damage and internal splits that weaken structural integrity
Lightning can vaporize internal moisture, creating internal steam damage and hidden longitudinal splits that compromise the tree's structural integrity without obvious external signs.
A job hazard analysis (JHA) for a tree removal should be completed:
Answer: Before work begins on each specific job site
A JHA must be completed before work begins on each specific job site because hazards vary by location, tree condition, and site layout.