It is intended as a guide to federal, state, and local authorities in drafting their regulations and may be adopted in whole or in part. See Annex D, Additional Resources, for a list of these and other applicable informative references. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this American National Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated in Annex D. However, only one trained person need be available if all new employees are trained in first aid within three months of their hiring dates. Workers shall not place reliance on the dielectric capabilities of such helmets.
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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 — specifically the expansion of the rules for working in proximity to electrical hazards to recognize three levels of qualification: the unqualified, the Incidental Line Clearance Arborist and Utility Line Clearance Arborist. 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.
Z133 Industry Standards
They provide the current criteria for arborists and other workers engaged in tree care practices. The Z Committee was organized in response to the efforts of Ethel M. Hugg of Johnston, NY, who sought to improve conditions for those working in the tree care industry after her son suffered a fatal accident pruning trees. The International Shade Tree Conference would become the secretariat of the committee in November The Z Committee included representatives of the tree care industry, labor officials, technical experts, members of the academic community, local and federal governments, equipment manufacturers, insurance carriers, and other interested specialists.
ANSI Z133 2017 Revision Overview
ANSI Z133 Safety Requirements for Arboricultural Operations Manual