Operating wood chippers can be dangerous for operators and others working
nearby. When employees feed tree limbs and branches into chippers they are at
risk of getting caught in the machine and being pulled into the fast-turning
A Safety and Health Information Bulletin (SHIB), published by the U. S.
Department of Labor Occupational Safety and Health Administration, discusses
ways to reduce or eliminate "caught-in" and "struck-by" chipper-related
accidents. It discusses training and proper work practices and identifies
controls that manufacturers have installed to reduce the risk of serious
Employees must be protected from contacting operating chipper components such
as knives, feed rollers and chip discharge spouts. General industry machine
guarding standard requires that all machines be equipped with one or more
methods of guarding to protect the operator and other employees in the work
area from hazards such as those created by rotating parts and flying chips.
Employers should closely supervise newly-hired employees to ensure that they
are safely operating the chipper and should reinforce training through regular
safety talks and unannounced site visits. When an employee engages in unsafe
work practices, or disables existing safety devices, immediate corrective
action, including refresher instruction and/or disciplinary measures, should be
The following are recommended safe chipper work practices to reduce "caught-in"
and "struck-by" hazards:
AplusA-online.de - Source: U. S. Department of Labor Occupational Safety and Health Administration