Description / Abstract:
This SAE Recommended Practice establishes the test procedures
and minimum performance criteria necessary to fulfill the intended
purpose and is applicable to Skidders, Grapple Skidders, and
Crawlers when used in the harvesting of trees.
Structures meeting these performance criteria may not provide
complete operator protection under all conceivable circumstances,
but they are expected to minimize the possibility of operator
injury under reasonable operating situations.
The performance requirements and test criteria included in this
document are derived from investigations on operator protection
that has performed the intended function in a variety of actual
operating conditions.
Objective—This document is intended to
establish a consistent, repeatable means of evaluating Operator
Protective Structures (OPS) on Skidders, Grapple Skidders, and
Crawlers when used in the harvesting of trees. Operator Protective
Structures are structures/enclosures whose primary purpose is to
minimize the possibility of operator injury from hazards such as
whipping saplings, branches, jill-poking (spear-like objects), and
snapping winch lines with the least adverse effect on operator
visibility, comfort, and protection from other hazards.
Rationale—Superseded by ISO 8084.