DEFINITION OF TERMS

PRECUT OR PRECUTTING - The two-step process to remove a branch before the finished cut is made so as to prevent splitting or bark tearing into the parent stem. The branch is first undercut, then cut from the top before the final cut.

PRUNING - Removal of plant parts.

RECIPROCATING CUTTING BLADE -Amoving blade that alternately changes direction on a linear cutting axis.

REDUCED-KICKBACK SAW CHAIN -Asaw chain which has been demonstrated to reduce kickback on some saw models during ANSI testing.

SCABBARD - A sheath to cover the saw chain and guide bar during transport and at other times when the pruner is not in use.

SKATING - When the guide bar and saw chain or blade fails to dig in during a cut, the guide bar or blade can begin hopping or dangerously skidding along the surface of the branch, possibly resulting in the loss of control of the pruner. To prevent or reduce skating, properly hold the pruner with two hands and make sure the saw chain or blade has established a groove for cutting.

SPRING POLE - Be alert for spring poles and stay clear of them during cutting. A spring pole can spring suddenly when cut, or when the wood holding it down is cut away. A spring pole can strike you or deflect the saw into your body

STUB - An undesirable short length of a branch remaining after a break or incorrect pruning cut is made.

STRESS FRACTURE - Structural blade or housing damage resulting from jamming in a cut, using the guide bar/blade as a lever, dropping the unit, or other abuse.

TERMINAL ROLE - Branch that assumes the dominant vertical position on the top of a tree.

THINNING - The removal of a branch or branches at the point of original or the shortening of a branch or branches.

TREE CUTTING WOUND - The opening that is created any time the tree’s protective bark covering is penetrated, cut, or removed. Pruning a live branch creates a wound, even when the cut is properly made.

UTILITY - An entity that delivers a public service such as electricity or communication.

UTILITY SPACE - The physical area occupied by the utility’s facilities and the additional space required to ensure its operation.

PUSH AND PULL - When cutting is done along the bottom rails of the guide bar, the reaction on the saw is a pull away from the operator. When the top of the guide bar is used, the reaction pushes the saw toward the operator. Both are normal reactions that must be controlled by the operator.

QUALIFIED LINE CLEARANCE TREE TRIMMER - A tree worker who, through related training and on-the-job experience is familiar with the techniques in line clearance and has demonstrated his/her ability in the performance of the special techniques involved. This qualified person may or may not be currently employed by a line clearance contractor.

QUALIFIEDTREEWORKER,PERSON,ORPERSONNEL- Person(s) who, through related training and on-the-job experience, are familiar with the hazards of pruning, trimming, repairing, maintaining or removing trees and with the equipment used in such operations, and have demonstrated ability in the performance of the special techniques involved.

REASONS FOR PRUNING - The reasons for tree pruning may include, but are not limited to, reducing hazards, maintaining or improving tree health and structure, improving aesthetics, or satisfying a specific need such as: removing diseased, dead, dying, decayed, interfering or obstructing branches; training young trees; and, utility line clearance. Before pruning, the primary objective should be clearly defined. That objective should be accomplished in the manner most beneficial to the health of the tree.

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