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DocuSign Envelope ID:5FA4B1AC-B897-4C32-A1E4-4B4A8885A341 <br /> @ULFr <br /> RFP for Disaster DebrisClearance and Removal Services <br /> Orange County, NC <br /> G <br /> Brush Grinding-Chippers <br /> ■ Rotary drum and disk-type tree or brush chippers not equipped with a mechanical in-feed system shall <br /> be equipped with an in-feed hopper not less than 85 in (215.9 cm) (the sum of the horizontal distance <br /> from the chipper blade out along the center of the chute to the end of the chute and the vertical distance <br /> from the chute down to the ground) and shall have sufficient height on its side members to prevent <br /> personnel from contacting the blades or knives of the machine during normal operations. <br /> ■ Rotary drum and disk-type tree or brush chippers not equipped with a mechanical in-feed system shall <br /> have a flexible anti-kickback device installed in the in-feed hopper for the purpose of protecting the <br /> operator and other persons in the machine area from the hazards of flying chips and debris. <br /> Disk-type tree or brush chippers equipped with a mechanical in-feed system shall have a quick stop and <br /> reversing device on the in-feed. The activating mechanism for the quick stop and reversing device shall <br /> be located across from the top, along each side of, and as close as possible to the feed end of the in- <br /> feed hopper and within easy reach of the operator. <br /> ■ The feed chute or feed table of a chipper shall have sufficient height on its side members to prevent <br /> operator contact with the blades or knives during normal operation. <br /> A swinging baffle shall be mounted in front of the knives to prevent throwback of material. <br /> ■ Brush chippers shall be equipped with an exhaust chute of sufficient length or design to prevent contact <br /> with the blade. <br /> ■ Brush chippers shall be equipped with a locking device on the ignition system to prevent unauthorized <br /> starting of the equipment. <br /> ■ Brush chipper cutting bars and blades shall be kept sharp, properly adjusted,and otherwise maintained <br /> in accordance with the manufacturer's recommendations. <br /> Trailer brush chippers detached from trucks shall be chocked or otherwise secured. All workers feeding brush into <br /> chippers shall wear eye protectors. Loose clothing, gauntlet-type gloves, rings, and watches shall not be wom by <br /> workers feeding the chipper. Employees shall never place hands,arms,feet,legs,or any other part of the body on the <br /> feed table when the chipper is in operation or the rotor is turning. Push sticks(of material that can be consumed by <br /> brush chipper) shall be used. Brush chippers shall be fed from the side of the centerline, and the operator shall <br /> immediately turn away from the feed table when the brush is taken into the rotor.Chippers shall be fed from the curbside <br /> whenever possible. Material such as stones, nails, sweepings, etc. shall not be fed into brush chippers. The brush <br /> chipper chute shall not be raised while the rotor is turning. <br /> OTHER OPERATIONS AND EQUIPMENT <br /> Pruning and trimmin <br /> ■ Pole pruners, pole saws,and similar tools shall be equipped with wood or nonmetallic poles.Actuating <br /> cords shall be of a non-conducting material. <br /> ■ Pole pruners and pole saws shall be hung securely in a vertical position with the sharp edges away from <br /> employees. They shall not be hung on utility wires or cables or left overnight in trees. <br /> ■ When necessary,warning shall be given by the worker in the tree before a limb is dropped. <br /> Limbing and bucklrrg <br /> ■ Whenever it is possible to do so,the tree worker shall work on the side on which the limb is being out. <br /> ■ Branches bent under tension shall be considered hazardous. <br /> When topping or lowering limbs, consideration shall be given to the use of taglines to control the limbs. <br /> A separate line shall be attached to limbs that cannot be dropped or are too heavy to be controlled by <br /> hand.The use of the same crotch for both safety rope and work rope shall be avoided. <br /> ■ In bucking, tree workers shall stand on the uphill side of the work whenever possible. The tree worker <br /> shall block the log to prevent rolling when necessary. <br /> ■ When bucking, wedges shall be used as necessary to prevent binding of the guide bar or chain. Stump <br /> cutters shall be equipped with enclosures or guards that effectively protect the operator. <br /> 31 <br /> i <br /> r <br />