Processing at the Yard
Some machines may be used to process
the logs at the yard or landing.
must comply with the OSHA
Requirements for Machines. Chippers have additional requirements as described below.
- A Delimber is a machine that delimbs and tops trees at the yard or landing.
- A Slasher cuts the logs into desired lengths.
- A Chipper reduces the logs into small pieces, usually for paper products or to burn as
fuel. If the chips are used to make paper, the logs will often be processed through
another machine called the Debarker before passing through the chipper. The Debarker
removes the bark and small limbs from the logs.
Highlights of Chipper Requirements
blades, discs or knives to reduce "scrap" wood to wood chips. Employee contact
with the operating components presents amputation hazards.
Operations. OSHA Preamble to Final Rules, (1994).
Logging Operations, Inspection Procedures and Interpretive Guidance. OSHA
Directive CPL 02-01-019 [CPL 2-1.19], (1995, March 17). [See General
Inspection Procedures -- 21. Chipping.]
- Employees must be protected from contacting operating chipper components by guarding the
infeed and discharge ports, and preventing the opening of the access covers or doors until
the drum or disc is at a complete stop.
- Detached trailer chippers must be prevented from rolling or sliding on any slope by
chocking the trailer wheels.
- A safe distance ( i.e. two tree or log lengths) must be maintained between these
operations and any other work or workers.