AC-Ch. 15 Worker Safety Flashcards
In the united states industry developed national consensus safety standards of practice for tree care
ANSI Z133.1
In the context of guidelines, standards, and specifications that which is acceptable to federal, state, provincial or local enforcement authorities or is an accepted industry practice
Approved
Cut made on a tree trunk or branch, opposite from and toward the notch, face cut or undercut to complete felling or branch removal
Back cut
Dangerous condition created when a tree or branch splits upward vertically from the back cut, slab up.
Barber chair
Trousers designed to protect legs while operating a chain saw
Chain saw pants
Form of leg protection or PPE worn when operating a chain saw and/or when applying chemicals. Made of various materials, depending on use.
Chaps
System of vocal communication used in tree care operations
Command and response system
45 degree notch with a horizontal bottom cut. Used in removing trees or branches.
Conventional notch
Any part of the body touching an energized conductor
Direct contact
Predetermined area where cut branches or wood sections will be dropped or lowered from a tree.
Drop zone
Any object, material or medium through which an electrical current can flow. Electric supply lines are designed as electrical conductors however guy wires, communication cables, tools, equipment, vehicles, humans, animals and other items can function as electrical conductors.
Electrical conductor
Predetermined set of procedures by which emergency situations are assessed and handled.
Emergency response
Metal or plastic wedge inserted into the back cut to help direct the path in which a tree or tree parts falls.
Felling wedge
Emergency care or treatment of the injures or illnesses of a person to stabilize his or her condition before medical help is available.
First aid
Strip of uncut wood fibers created between the face cut or notch and the back cut that helps control direction in tree felling or limb removal.
Hinge
Felling notch that is horizontal on the top and angled on the bottom.
Humboldt notch
Exposure to electrical current by touching any electrical conductor that is in contact with an energized conductor.
Indirect contact
Brief meeting of a tree crew at the start of every job to communicate the work plan, responsibilities and requirements and any potential hazards
Job briefing
Sudden, sometimes violent and uncontrolled backward or upward movement of a chain saw
Kickback
Upper quadrant of the tip of a chain saw bar.
Kickback quadrant
Predetermined area where cut branches or wood sections will be dropped or lowered from a tree.
Landing zone
Type of PPE. Any clothing or device to protect the legs from various injuries.
Leg protection
Closest distance that a tree worker, tool, equipment or tree part is permitted near overhead electrical conductors and equipment. Distance increases with increasing voltage and varies with training of personnel
Minimum approach distance
In the United States the legislative Occupational Safety and Health Act dealing with health and safety in the workplace.
OSHA
Wedge-shaped cut 70 degrees or greater used in felling trees or removing tree sections.
Open-face notch
Force of equal magnitude exerted in the opposite direction of a force acting on a body.
Reactive force
Predetermined escape route away from a tree that is to be felled. Should be a 45 degree angle back and away from the direction of the falling tree and clear of obstruction.
Retreat path
Word that designates a mandatory requirement within the ANSI standards or contact documents.
Shall
Word that designates an advisory recommendation in the ANSI standards or contract documents
Should
Rope used to control the swing of a limb being removed or to control the direction or fall of a tree or limb being removed.
Tagline
Predetermined, orderly means for job completion.
Work plan
Method of bringing an injured worker down from a tree or aerial lift device
Aerial rescue
