What a Personnel Platform Changes About Every Other Rule

Why this matters

Hanging a person from a hook is the one operation in rigging where the correct first answer is almost always no. The permission is conditional on nothing else working, the machine's published capacity is cut in half for the duration, and ten practices that are ordinary on a material lift become prohibited the moment a person is in the basket. The value of this card is in what comes off the table rather than what goes on it, because a crew that learns personnel hoisting as a procedure will carry their material-lift habits into it, and those habits are the failure mode.

The gate that comes before any of it

For construction work, 29 CFR 1926.1431(a) prohibits hoisting employees by crane or derrick unless the employer demonstrates that erecting or using conventional means would be more hazardous, or is not possible because of structural design or worksite conditions. Conventional means are the alternatives you have to rule out first, on the record, one at a time: a personnel hoist, a ladder, a stairway, an aerial lift, an elevating work platform, or a scaffold. In construction those live at 29 CFR 1926.453 for aerial lifts and 29 CFR 1926 Subpart L for scaffolds; in general industry the counterparts are 29 CFR 1910.67 for vehicle-mounted elevating and rotating work platforms and 29 CFR 1910 Subpart D for walking-working surfaces. Fall protection triggers differ between the Parts too, at 29 CFR 1926.501 for construction against 29 CFR 1910.28 for general industry, so name which Part your work falls under before quoting any height.

There is no general-industry standard of the same scope as 1926.1431. A shop doing general-industry work that reaches for a suspended platform is operating under its own written programme, the crane manufacturer's instructions and a qualified person's judgement, with 1926.1431 as the most developed written criteria available to borrow from. That is a weaker legal position than it sounds, and it is a reason to exhaust conventional means harder, not a loophole.

"Not convenient" is not infeasible. "The scissor lift will not reach" is a finding you can write down. "The rental yard is out of aerial lifts today" is a scheduling problem wearing a safety argument.

The capacity re-basing

This is the number people get wrong, and they get it wrong in the same way every time: they take 50 percent of the machine's headline capacity rather than 50 percent of the rated capacity for the configuration actually in use.

29 CFR 1926.1431(d)(1) limits the total load to 50 percent of the rated capacity for the radius and configuration in use. Configuration means the boom length, the radius, the counterweight, the outrigger extension and the quadrant of operation, all of which the load chart already prices. The headline number on the side of the machine belongs to the shortest boom at the shortest radius and has nothing to do with where the platform is going.

It is a re-basing rather than a derate you apply on top of something. You are not halving your working load; you are declaring that for this operation the machine's published rating means half of what it means on a material lift, and everything below the boom point still comes out of that half.

Two workers with gear at roughly 250 lb each and 200 lb of tools is about 700 lb, which fits both columns. That is not the point of the table. The point is that the budget fell by 68 percent between the two radii while nothing about the people changed, and the number that governs is the one at the maximum radius reached at any point in the operation, not the radius at the landing. Taking the deductions out of the halved figure rather than out of the gross is the conservative order and it is the one to bank; where the crane manufacturer publishes its own personnel-hoisting accounting, that governs instead and the qualified person owns the reconciliation.

The ten things that stop being permitted

Each of these is ordinary on a material lift. Each is off the table with a person on the line.

1. Free-falling the load line. Controlled load lowering only, with the load line's brake and the hoist under power for the entire descent. A hoist brake is a holding device, not a parking device, and it is not the mechanism you rely on to stop a person.
2. Any other load on the line. The platform is the only thing on the hook. No second sling, no incidental pick on the way past.
3. An out-of-service or missing anti two-block device. Two-blocking is the hook block running up into the boom tip; the drum keeps pulling, the rope takes the full line pull and parts. It happens in a second and it is the rope that fails rather than the machine, so there is no warning in the way the machine feels.
4. Travelling the machine with the platform occupied, except in the narrow circumstances the standard defines and the manufacturer permits.
5. The operator leaving the controls while anyone is in the platform, for any reason, including to look at something.
6. Skipping the trial lift. An unoccupied trial lift with the anticipated load, through the full route to each work location, immediately before the personnel lift, and again after any move of the machine or any new location.
7. Skipping the proof test. The platform and its rigging are proof tested to 125 percent of the platform's rated capacity before first use, and again after any repair or modification, with the area cleared and nobody in or under it during the test.
8. Loose tools and materials in the platform. Everything is secured and evenly distributed, and it all counts against the budget in the table above.
9. Adverse conditions. Wind above the manufacturer's limit for the configuration, ice, electrical storms, or any condition that makes control uncertain stops the operation. Wind on a broad platform behaves the way wind on any broad light load behaves, which a sibling card works through.
10. Substituting anything for a designed platform. A bucket, a pallet, a stack of forks, a slung basket or a drum is not a personnel platform. The platform is designed by a qualified engineer competent in structural design, per 29 CFR 1926.1431, and it carries its own identification.

What a person in the platform is attached to

Everyone in the platform wears a personal fall arrest system, and per 29 CFR 1926.1431 the attachment point is the lower load block, the overhaul ball, or a structural member within the platform itself. It is not the guardrail, and it is not a separate structure the platform might swing away from. For construction, the arrest system components and their criteria live at 29 CFR 1926.502(d); the general-industry counterpart is 29 CFR 1910.140, and the two are not interchangeable text even where the hardware is the same.

Nobody climbs into or out of the platform except at a landing with the platform stable and secured, and nobody stands on the guardrail or the mid-rail to gain height, which is the single most common way the whole apparatus gets defeated by the person it was built to protect.

The pre-lift meeting is the deliverable, not a formality

Before the trial lift, the crew that will do the work meets: the operator, the signal person, the employees who will be hoisted, and the person responsible for the task. It happens again whenever any of those people change. What gets covered is specific and short: the route, the maximum radius, the total load against the budget from the table, the signals, what stops the lift, and who can stop it. Anyone can stop it.

The reason it is repeated when the crew changes is that a personnel lift depends entirely on shared expectations about what the machine is about to do. A signal person who joined after the meeting does not have those expectations, and the platform is where that gap gets discovered.

Where this leaves you

The honest summary of this card is that a personnel platform costs you half the machine, ten practices, an engineered platform, a proof test, a trial lift, a meeting and a written infeasibility finding, and it is still the second-best answer to almost every access problem. Crews reach for it because the crane is already on site and the aerial lift is not. That is a scheduling reason, and the standard's first requirement exists precisely to stop a scheduling reason from becoming a method.

Where it genuinely is the only way, the operation is well described, the criteria are specific, and doing it correctly is entirely achievable. The two failures that recur are treating the 50 percent as applying to a headline number and treating the trial lift as paperwork. Both are cheap to get right and neither gives any warning when it is wrong.

References

• 29 CFR 1926.1431, hoisting personnel, within 29 CFR 1926 Subpart CC, cranes and derricks in construction, including the infeasibility gate at 1926.1431(a)
• 29 CFR 1926.501 and 1926.502(d) for construction fall protection and personal fall arrest systems, against 29 CFR 1910.28 and 1910.140 for general industry
• 29 CFR 1926.453 aerial lifts and 29 CFR 1926 Subpart L scaffolds, against 29 CFR 1910.67 and 29 CFR 1910 Subpart D in general industry, as the conventional means to rule out first
• The crane manufacturer's own instructions for personnel hoisting in the configuration in use, which govern the capacity accounting
• See related: What Wind Does to a Lift and When It Stops It; What a Tandem Lift Adds Beyond Two Cranes