Safe Work Practices Flashcards
6 cards from real Certified Arborist Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Safe Work Practices flashcards as text
An arborist is preparing to fell a medium-sized tree. To ensure the tree falls in the intended direction and to prevent dangerous situations like a 'barber chair', what is the most critical element the arborist must create and maintain during the back cut?
Answer: Adequate and sound hinge wood
The hinge is a strip of uncut wood between the notch and the back cut that is critical for controlling the tree's fall. It acts as a steering mechanism, preventing the tree from twisting or falling in an unintended direction. The other options are important safety considerations, but the hinge is the most crucial element for controlling the felling operation.
An arborist crew is working near a 25kV primary distribution line, but they are not qualified as line-clearance arborists. According to ANSI Z133 standards, what is the mandatory course of action before any work can begin on a tree that has branches within the minimum approach distance?
Answer: Notify the utility company and wait for them to de-energize or shield the lines before proceeding.
ANSI Z133 standards are extremely strict about working near energized conductors. Only qualified line-clearance arborists are permitted to work within the specified minimum approach distances. For all other arborists, the only safe and compliant action is to contact the electric utility to have the hazard eliminated by de-energizing or guarding the lines.
When operating a chainsaw for ground operations, which of the following combinations of Personal Protective Equipment (PPE) is required by the ANSI Z133 standard?
Answer: Head protection (helmet), eye protection, hearing protection, and cut-resistant leg protection.
The ANSI Z133 standard mandates a comprehensive set of PPE for ground-based chainsaw operations to protect against multiple hazards. This includes a helmet for head protection, safety glasses or goggles for eye protection, earplugs or muffs for hearing protection, and chainsaw-resistant chaps or pants for leg protection.
During a job site safety briefing before starting a tree removal, which topic is a mandatory component according to ANSI Z133 standards?
Answer: Identification of hazards, work procedures, and emergency response plans.
ANSI Z133 requires a daily job briefing before work begins to ensure the entire crew understands the specific risks and procedures for the day. This briefing must cover the hazards associated with the job, the specific work plan, assignments for each crew member, and communication and emergency protocols. The other options are related to logistics but are not mandatory safety briefing topics.
In tree care rigging, what does the term 'Working Load Limit' (WLL) represent?
Answer: The maximum load that should ever be applied to a piece of equipment, as determined by the manufacturer.
The Working Load Limit (WLL) is the maximum safe force or load that a piece of lifting or rigging equipment is designed to carry during normal use. This value is set by the manufacturer and includes a significant safety factor, meaning it is much lower than the equipment's minimum breaking strength.
Which of the following represents a critical safety violation when operating a brush chipper?
Answer: Wearing gauntlet-style gloves and a hoodie with drawstrings.
Loose-fitting clothing, drawstrings, and gauntlet-style gloves are explicitly forbidden by ANSI Z133 when operating a chipper because they pose a severe entanglement hazard. These items can be easily caught by the feed mechanism, pulling the operator into the machine. All other options listed are recognized safe operating procedures.