Product Details: Revision: Edition, ; Published Date: January ; Status: Active; Document Language: Published By: Tree Care Industry Association. ANSI Z is available to purchase from the International Standards Committee on Safety in Tree Trimming Operations, Z ANSI A and Z Standards for Tree Care Operations. The ANSI (American National Standards Institute) A standards represent the industry consensus.
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ANSI A300 and Z133 Standards for Tree Care Operations
This revision provides the most current and comprehensive safety guidance for arborists in the United States. Although compliance with this standard is voluntary, Z carries the force of law in many instances in the U.
One of the most notable changes is in section 4 — Electrical Hazards z13 specifically the expansion of the rules for working in proximity to electrical hazards to recognize three levels of qualification: This is a sizeable expansion on the topic from the previous version, and specifically details the safety requirements of each of these tree worker positions. The following changes pertaining to climbers are relatively simple and straightforward.
For example, the climber is now required to have a hand saw available while working aloft, where previously it was only a recommendation.
The same now applies to aerial lift operators when pruning.
ANSI A and ANSI Z Standards for Arboriculture Operations
The purpose of requiring a handsaw while aloft is make a strong suggestion for an alternative practice a133. Chippers and winches received a lot of attention in the revisions.
For instance, the use of chippers by arborists, mechanics and other workers includes the following clarification in the revision: If maintenance is needed, all moving parts shall come to a complete stop and keys shall be removed from the ignition ans pocketed by the authorized person before proceeding. When working with chipper winches, a winch line should not be wrapped around a load.
During winching operations of loads that do not have a z1333 attachment point, the load should be secured using a sling. Additionally, when using a winch in chipper operations, the operator shall ensure that the winch line is properly stored before initiating chipper operations.
As for other equipment, the revision restates that equipment must be inspected before use, but goes further to suggest that if an inspection reveals a defect that could affect the safe operation of the equipment, the equipment shall be removed from service. This essentially means that if the truck is over-loaded on a tree job, the driver is responsible.
Also important to note, the wheel chock guideline previously stated that wheel chocks need to be set before using an aerial device — the new standard specifies two wheel chocks. Radio communications between the qualified arborist and qualified crane operator shall be used during blind picks.
Radio communications shall be hands free. When more than one worker is involved in limbing, bucking and moving debris from a tree, each shall be positioned and their duties organized so that the actions of one worker will not create a hazard for any other worker. The expansion on this requirement z133 that only one worker shall be cutting a single tree or single tree part during the limbing and bucking process. These are just a few of the revisions in the anei Z To fully familiarize yourself with the revisions, we recommend picking up a copy, currently available in the TCIA Shop.
The following are a small selection of changes in the revision: Electrical hazards One of the most notable changes is in section 4 ansii Electrical Hazards — specifically the expansion of the rules for working in proximity to electrical hazards to recognize three levels of qualification: Climbing The following changes pertaining to climbers are relatively simple and straightforward.
Use of vehicles and mobile equipment Chippers and winches received a lot of attention in the revisions.