ISA Utility Specialist (Chapters 1-7) Exam with Complete Solutions

In the U.S., enforcement of safety work rules resides with: - ANSWER-Occupational Safety & Health Administration (OSHA) Utility pruning is the pruning of trees located in the vicinity of power lines for the purpose of __________ __________ __________. - ANSWER-ensuring reliable service A comprehensive vegetation management program should be __________ rather than reactive, & based on principals of __________ vegetation management. - ANSWER-proactive; integrated What is a volt? - ANSWER-a unit of electrical force Major storms or __________ weather events are the usual cause of power outages over large areas. - ANSWER-catastrophic Without __________, messages can have multiple meanings. - ANSWER-context ISA BMPs provide a practical guide for implementing __________ __________. - ANSWER-industry standards Electrical resistance determines how much __________ is required to move electricity along a conductor and is measured in __________. - ANSWER-energy; ohms When communicating, a person's experience & __________ will influence how the person reacts. - ANSWER-perceptions Crew mobilization for a storm event is much more rapid from a __________ status. - ANSWER-standby NERC standards are specific to what line voltages? - ANSWER-200 kV & above An important first step in any vegetation management program should be to asses system conditions, which is often done through an __________. - ANSWER-inventory Which type of cuts are less unacceptable? - ANSWER-internodal cuts (e.g. topping) A worker neglecting to wear cut-resistant chaps while operating a chainsaw is committing an unsafe __________, while an employer failing to provide chaps is creating an unsafe __________. - ANSWER-act; condition A conductor carrying more than __________ volts would be considered a NERC line. - ANSWER-200,000 Communication is both verbal & nonverbal. When a customer is confronted with contradictory information, the person will usually believe the __________ message. - ANSWER-nonverbal Voluntary safety standards for pruning, trimming, repairing, maintaining & removing trees, & cutting brush: - ANSWER-ANSI Z133 NERC standards require the reporting of all tree caused outages by __________ categories - ANSWER-three A traditional cycle will schedule maintenance __________ trees grow into conductors. - ANSWER-before Which type of cuts are more acceptable? - ANSWER-nodal cuts (e.g. drop-crotch, thinning) The __________-__________ rule suggests that workers should take time before starting a job to check for potentially unsafe conditions & discuss them. - ANSWER-two-minute According to ANSI Z133, the minimum approach distance for persons other than qualified line-clearance arborists for 50 kV & less is __________. - ANSWER-10 feet Trees growing into contact with a single-phase distribution conductor pose __________ threat of a tree-ground fault. - ANSWER-little Where should the final cut be made for proper utility pruning? - ANSWER-just outside of the branch bark ridge and the branch collar A vegetation management scheduling unit may be an entire __________ or a __________ __________. - ANSWER-circuit; geographical area 2 examples of protective equipment: - ANSWER-circuit breakers lightning receptors On a storm site, cutting should not begin until all risks have been assessed & the __________ approach has been decided & adopted. - ANSWER-safest