Working Around Heavy Equipment JSA

Most people killed by heavy equipment are not operating it. They are on foot nearby — walking behind a machine that is backing, standing in a pinch point as it slews, or working on an attachment that comes down. The operator usually never saw them.

A JSA for this work is really about separation: keeping people and machines apart by distance, by physical barrier, or by a communication rule that both sides actually follow. The controls below are ordered on that basis.

What the work involves

• Ground work alongside operating excavators, loaders and dozers
• Spotting, signalling and directing machine movements
• Loading, hauling and dumping cycles with trucks and plant
• Hitching, unhitching and changing attachments
• Daily inspection, servicing and refuelling

Hazards and controls

Controls are listed in hierarchy order — the further down the list a control sits, the less it should be carrying on its own.

1. Struck by a machine backing or manoeuvring

• Eliminate: plan the site so machines do not need to reverse — one-way haul routes and drive-through loading.
• Engineering: reverse signal alarm audible above site noise; cameras and proximity detection where fitted.
• Administrative: where rear view is obstructed, back only with a reverse alarm or an observer signalling it is safe; separate pedestrian routes physically from machine routes.
• PPE: high-visibility clothing — the last line, not the plan.

29 CFR 1926.601(b)(4) requires motor vehicles with an obstructed view to the rear to have a reverse signal alarm audible above surrounding noise, or to be backed only when an observer signals that it is safe. 29 CFR 1926.602(a)(9) prohibits using earthmoving equipment with an obstructed rear view in reverse unless it has an operating reverse signal alarm, or is backed only when an observer signals that it is safe.

2. Caught between the machine and a fixed object, or in the slew path

• Eliminate: swing radius barricaded so the pinch point cannot be occupied.
• Administrative: no one inside the swing radius of rotating superstructure while the machine is working; positive communication — eye contact and an agreed signal — before anyone approaches.
• Administrative: the operator stops on any stop signal from anyone, and does not restart until the person is clear and acknowledged.

29 CFR 1926.1424 requires the swing radius of a crane's rotating superstructure to be barricaded or otherwise controlled to prevent employees from entering and being struck or crushed.

3. Unexpected movement during maintenance or attachment change

• Eliminate: lower the attachment to the ground and shut down before anyone goes near it.
• Engineering: blocks, pins or safety props for any raised part that must stay up; wheel chocks.
• Administrative: lower or block buckets, blades and dump bodies, apply the park brake and secure against motion before repair or servicing; lockout/tagout where stored energy exists.

29 CFR 1926.600(a)(3)(i) requires that heavy machinery, equipment or parts suspended or held aloft be substantially blocked to prevent falling or shifting before employees are permitted to work beneath or between them. 29 CFR 1926.20(b)(3) requires machinery or equipment not in compliance with an applicable requirement to be identified as unsafe by tagging or locking the controls inoperable, or physically removed from its place of operation.

4. Rollover or tip-over of the machine

• Engineering: rollover protective structures and seat belts on equipment that requires them, worn every time.
• Engineering: grade, compact and maintain haul roads; stop logs or berms at drop-offs and dump points.
• Administrative: travel with the load low; no operation across slopes beyond the machine's rating; a competent person assesses ground conditions after rain.

29 CFR 1926.1000 requires rollover protective structures on the material handling equipment it lists, including rubber-tired dozers, loaders and scrapers, motor graders and crawler tractors. 29 CFR 1926.602(a)(2) requires seat belts on the earthmoving equipment covered by that section.

5. Machine defects taken into service

• Administrative: a documented inspection before each use or shift, with defects affecting safety taken out of service until repaired.
• Administrative: only trained and authorized operators; familiarization on each specific machine, not just the class.

29 CFR 1926.601(b)(14) requires vehicles in use to be checked at the beginning of each shift to ensure that the listed parts, equipment and accessories are in safe operating condition and free of apparent damage. 29 CFR 1926.20(b)(3) requires equipment identified as unsafe to be tagged or locked out of service, or physically removed, rather than left where it can be picked up.

A worked example row

This is how one line of the finished JSA reads, with the risk bands scored on the same 4-band matrix the generator prints:

Related work activities

• Excavation & Trenching JSA
• Forklift JSA
• Work Near Moving Traffic JSA