ROLLOVER & HEAVY EQUIPMENT
Heavy equipment can be safe when it is well-maintained and operated properly. It is also true that just about every piece of heavy equipment is capable of tipping or rolling over under given circumstances. Heavy equipment rollovers have resulted in serious injury or death, as can be clearly seen from the incident that occurred at a business next to Phillips Property in Pittsburgh on 10/29/24. A 52-year-old worker was crushed to death by the bucket of an excavator after a rollover occurred. The machine was extended too far out past what it was capable of doing, and the tracks were turned perpendicular to where they were loading. An event like this could occur even with experienced operators.
To avoid such a tragedy, follow all heavy equipment safety practices:
OSHA STANDARDS
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OSHA Standard Subpart O 1926.602(a)(1): These rules apply to the following types of earthmoving equipment: scrapers, loaders, crawler or wheel tractors, bulldozers, off-highway trucks, graders, agricultural and industrial tractors, and similar equipment. The promulgation of specific rules for compactors and rubber-tired “skid-steer” equipment is reserved pending consideration of standards currently being developed.
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OSHA Standard Subpart O 1926.602(a)(2)(i): Seat belts shall be provided on all equipment covered by this section and shall meet the requirements of the Society of Automotive Engineers J386-1969, Seat Belts for Construction Equipment. Seat belts for agricultural and light industrial tractors shall meet the requirements of Society of Automotive Engineers J333a-1970, Operator Protection for Agricultural and Light Industrial Tractors.
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OSHA Standard Subpart O 1926.602(a)(3)(i): No employer shall move or cause to be moved construction equipment or vehicles upon any access roadway or grade unless the access roadway or grade is constructed and maintained to safely accommodate the movement of the equipment and vehicles involved.
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OSHA Standard Subpart O 1926.602(a)(4) – Brakes: All earthmoving equipment mentioned in this section shall have a service braking system capable of stopping and holding the equipment fully loaded, as specified in Society of Automotive Engineers SAE-J237 (Loaders/Dozers), J236 (Graders), and J319b (Scrapers). Brake systems for self-propelled rubber-tired off-highway equipment manufactured after January 1, 1972, shall meet applicable minimum performance criteria set forth in the Society of Automotive Engineers Recommended Practices.
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OSHA Standard Subpart O 1926.602(a)(6): Rollover protective structures (ROPS). See Subpart W of this part for requirements for rollover protective structures and overhead protection.
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OSHA Standard Subpart O 1926.602(i)(ii): No modifications or additions that affect the capacity or safe operation of the equipment shall be made without the manufacturer’s written approval. If such changes are made, capacity, operation, and maintenance instruction plates, tags, or decals shall be changed accordingly. In no case shall the original safety factor of the equipment be reduced.
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OSHA Standard Subpart O 1926.602(a)(6): Unauthorized personnel shall not be permitted to ride on powered industrial trucks. A safe place to ride shall be provided where riding of trucks is authorized.
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OSHA Standard Subpart G 1926.201(a): Signaling by flaggers and the use of flaggers, including warning garments worn by flaggers, shall conform to Part 6 of the MUTCD.
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OSHA Standard Subpart G 1926.201(b): Crane and hoist signaling regulations are found in applicable American National Standards Institute standards.
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OSHA Standard Subpart O 1926.601(b)(14): All vehicles shall be checked at the beginning of each shift to ensure parts, equipment, and accessories are in safe operating condition and free of apparent damage. This includes service brakes, parking brakes, emergency braking systems, tires, horn, steering mechanism, coupling devices, seat belts, operating controls, safety devices, lights, reflectors, windshield wipers, defrosters, and fire extinguishers where required. All defects shall be corrected before use.
FOCUS POINTS YOU NEED TO KNOW
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Provide a CAZ (Control Access Zone) to restrict all non-essential personnel from heavy equipment operational areas.
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If you are not directly involved in the task and specifically trained for the scheduled work, stay clear of all operations.
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Always make positive eye contact when approaching any piece of heavy equipment. Do not proceed into the work zone unless the operator acknowledges your presence.
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See something, say something. Stop work and question activities when necessary.
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Only trained and/or certified operators are allowed to run heavy equipment.
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Ensure operators do not overreach or exceed the machine’s rated lift/load capacity.
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Using a large bucket on a small excavator or filling the bucket with material that is too heavy increases the risk of tipping.
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Operators must comply with the owner’s manual procedures and load charts.
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OPERATORS SHOULD
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Avoid overreaching by moving the machine closer to the work area.
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Take the time to properly scoop, move, and dump loads instead of taking shortcuts.
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When the bucket is fully loaded, bring the stick in close to the machine before swinging to the side.
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Keep wheels or tracks parallel to the work area or embankment edges to reduce rollover risk.
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Dig or load straight in front of the equipment tracks when possible and never dig at a 90-degree angle.
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Keep booms and front-end buckets low during transport and turning to lower the center of gravity.
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Coordinate with PMs and management to ensure a trained operator is assigned for the task.
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Understand that increased speed increases the risk of rollover and struck-by incidents.
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Avoid slopes that are too steep for the machine and do not operate on excessive grades.
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Verify ground conditions can adequately support equipment and loads.
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Stay off unstable slopes and weak, wet embankments.
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Drive directly up or down slopes whenever possible instead of diagonally.
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When excavating on a slope, cut a bench for the excavator to sit on.
OSHA REQUIREMENT SUMMARY
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Trained operators are required.
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Equipment must be used only as intended for its specific purpose.
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All owner’s manual instructions and load chart restrictions must be followed.
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Establishing and maintaining a CAZ is critical.
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ROPS systems are required, and seat belts are mandatory.
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Equipment must be operated within its limitations.























































