ISA Certified Arborist Chapter 15 (Tree Worker Safety) Questions and Answers Fully Solved

ISA Certified Arborist Chapter 15 (Tree Worker Safety) Questions and Answers Fully Solved As used in many standards and regulations, the term _______ denotes a mandatory requirement, and the term _______ denotes an advisory recommendation. shall should Name five pieces of personal protective equipment that are generally required for all tree workers. hard hat eye protection hearing protection, when applicable leg protection, when applicable sturdy work boots and appropriate clothing True/False - All communications wires and cables shall be considered to be energized with potentially fatal voltages and shall never be touched directly or indirectly. True True/False - OSHA regulates industrial safety and health issues in the United States (OHSA, in Canada) True The safety standard for tree care operations in the United States is the ______. ANSI Z133 True/False - Head protection need only be worn while there are climbers in the trees. False True/False - Eye protection is not required for tree work. False True/False - Hearing protection may be in the form of ear plugs or ear-muff-type devices. True True/False - Workers must not wear gauntlet-type gloves while chipping brush. True If a climber warns, "Stand clear," he or she must not proceed until hearing the acknowledgement, _______ _______. "all clear" Each job should begin with a _______ _______, which coordinates the activities of every worker. job briefing The voice _______ and _______ system ensures that warning signals are heard, acknowledged, and acted on. command response All workers should receive some education and training in _______ _______ procedures including CPR, first aid, and aerial rescue. emergency response True/False - Any tree workers who work in proximity to electrical conductors must receive training in electrical hazards. True True/False - "Electrical conductor" is defined as any overhead or underground electrical device, including wires and cables, power lines, and other such facilities. True True/False - Rubber footwear and gloves provide absolute protection from electrical hazards. False Always engage the ______ ______ before starting a chain saw. chain brake True/False - The chain brake must be engaged if the operator takes one hand off the running saw or takes more than two steps. True True/False - The chain saw engine must be stopped for refueling. True True/False - Kickback can occur when the upper tip of the chain saw guide bar contacts an object. True True/False - A well-trained climber, in good condition, should be able to dodge the kickback of a chain saw. False Name three types of notches used in tree felling. open face traditional (45 degrees) Humboldt Generally, the depth of the felling notch should not exceed ______ - ______ of the diameter of the tree. one-third The _______ is critical in controlling the direction of fall. hinge Sometimes, if the tree is leaning in the direction of fall or has internal faults, the tree can split upward from the back cut. This is called a ______ ______, and it can be very dangerous. barber chair