Oregon Administrative Rules › Chapter 437 - DEPARTMENT OF CONSUMER AND BUSINESS SERVICES, OREGON OCCUPATIONAL SAFETY AND HEALTH DIVISION › Division 7 - FOREST ACTIVITIES › Subdivision A - General Requirements and Definitions › Section 437-007-0025 - Definitions

Current through Register Vol. 63, No. 7, July 1, 2024
The following definitions apply to terms used in this
				  Division:
(1) A-frame -- A structure
				made of two independent columns fastened together at the top and separated by a
				reasonable width at the bottom to stabilize the unit from tipping
				sideways.
(2) Alternative
				communication system -- A system by voice, hand or media other than horn or
				whistle which provides a safe and reliable method of communication between crew
				members.
(3) Anchor Point (tree
				climbing) -- A secure point capable of providing life support.
(4) Approved container -- A metal or
				polyethylene (plastic) container that can be used to carry flammable liquids in
				quantities up to 5 gallons. These containers must be accepted as satisfactory
				to contain flammable liquids by a nationally recognized testing lab, such as
				Underwriters Lab (UL) or Factory Mutual (FM).
(5) Aramid -- The generic name for a
				high-strength, flame-resistant synthetic fabric used in the shirts and jeans of
				firefighters. Nomex, a brand name for aramid fabric, is the term commonly used
				by firefighters.
(6) Arch -- Any
				device attached to the back of a mobile vehicle and used for raising one end of
				logs to facilitate movement.
(7)
				Ascenders (Jumars, Gibbs) -- Any climbing device used to ascend a fixed
				vertical rope. The term ascenders usually refers to mechanical
				devices.
(8) Authorized person --
				See "Designated Person."
(9)
				Backcut (falling cut) -- The cut opposite of the face cut.
(10) Ballistic nylon -- A nylon fabric of
				high tensile properties designed to provide protection from
				lacerations.
(11) Base of tree --
				That portion of a tree that is not more than 12 inches above highest ground
				level.
(12) Belay (snubbing) -- A
				method of protecting a climber in case of fall. A safety rope tied to a climber
				is paid out or taken in as the climber moves by a second person (the belayer)
				or by the climber in a self-belay (using the 4-inch tie-in). By controlling the
				safety rope, the belayer can stop the climber from falling.
(13) Below The Four-Inch Bole Diameter -- Any
				point on the bole of the tree where the diameter is greater than 4
				inches.
(14) Bight of the line -- A
				hazardous zone created by one or more lines under tension, or a point on a line
				where a rigging chain is attached.
(15) Binder -- A hinged lever assembly for
				connecting the ends of a wrapper to tighten the load restraining devices (log
				trucks, flatbeds, lowboys, etc.).
(16) Brow log -- A log placed parallel to any
				roadway at a landing or dump to protect carriers while loading or
				unloading.
(17) Buck -- To cut a
				fallen tree into logs.
(18) Butt --
				The bottom cut or the first log of a fallen tree.
(19) Cable yarding -- The movement of trees
				or logs from the area where they have been fallen to a landing by attaching
				them to a cable system that is supported by a metal tower (wood spar) and/or
				intermediate support or tail trees.
(20) Carabiner (Biners, Locking Carabiners)
				-- An oblong metal ring with a spring loaded gate on one side used for various
				purposes in climbing, such as attaching equipment to the climber or securing
				the climber to a rappel system.
(21) Chest Harness -- Straps placed around
				the chest and shoulders only to secure the proper positioning for a chest
				attachment point.
(22) Chock -- A
				block, often wedge-shaped, which is used to prevent movement; for example, a
				log from rolling, a wheel from turning.
(23) Choker -- Length of wire rope, chain or
				synthetic material with attachments for encircling a log to be
				yarded.
(24) Climber -- A person
				qualified to climb a tree; the person climbing.
(25) Climbers Belt (Lineman's Belt, Body
				Belt, Safety Belt) -- A wide padded belt having two large metal D-ring
				attachment points on the sides. A climbing belt does not have an attached chest
				harness or attached leg straps.
(26) Climbing Harness -- A type of harness
				that provides both pelvic and upper body support and can be adjusted to fit
				individual climbers. Climbing harnesses may be a one-piece design (full body
				harness) or any two-piece design that meets industry recognized standards.
				Climbing harnesses normally have separate leg loops. Tree climbing harnesses
				will usually have all of the above plus two large D-ring attachment points on
				the sides.
(27) Climbing Helmet --
				Designed specifically for climbing, this helmet has a three-point chinstrap and
				is designed to remain in place during a fall. It is rated for the helmet's
				ability to protect against side and top impacts.
(28) Climbing Line -- A 5400 pound minimum
				breaking strength rope used in tree climbing for ascending into a tree,
				descending from a tree, and/or working aloft in a tree.
(29) Climbing Spurs (Climbers, Tree Climbers,
				Gaffs, Pole Gaffs, Spurs, Tree Spurs, Lineman's Climbers, Spikes) -- L-shaped
				metal shanks that attach to the foot and lower leg and are used to ascend or
				descend a tree bole by means of a sharp spike (gaff) that penetrates the tree
				bark and sticks into the wood of the tree.
(30) Competent person -- A qualified person
				who has been authorized by the employer or employer representative to:
(a) Identify existing and predictable hazards
				in the surroundings or working conditions which are hazardous or dangerous to
				employees; and
(b) Eliminate the
				hazard or take corrective action.