Scissor Lift Operator — Certification Prep

Introduction

The scissor lift is the machine that made working at height ordinary. It is stable, it is simple to drive, the platform has a rail all the way round, and anybody can be standing on it two minutes after walking up to it. That is exactly why it hurts people.

The deaths are not exotic. A machine driven elevated over a cable ramp and tipped. A head trapped between the platform rail and a beam nobody looked up at. A person standing on the mid-rail to reach one more inch. A machine that stopped working with somebody on it and a crew who had never thought about how to get them down.

This book teaches the machine, the numbers printed on it, the checks before it goes up, the ways it goes wrong, and what the safe-use standard actually asks of an employer and a crew.

This Book Cannot Certify You

Operating a scissor lift at work requires training and an evaluation on a real machine. The framework in the current standards has four parts -- general theory, a knowledge evaluation, familiarisation with the specific machine you are about to use, and a practical evaluation by a qualified person -- and none of those four can happen in a book.

What a book can do is get the theory into you properly, so that the day with the machine is spent on your hands and your judgement rather than on definitions. Until you are trained, evaluated and authorised by your employer, the answer to "can you take the lift up and focus that?" is no.

How to Use This Book

Read it in order; each chapter assumes the last. The chapters on stability and on crushing are the two that describe how people actually die, and they are worth reading twice. Every chapter ends with a reference table, a procedure, a failure table written symptom first, an exercise and a checklist.

Keep a notebook

Log every pre-use inspection: the machine's unit number, the date, and what you found — not just that you looked. A scissor lift you have never written anything about is a machine whose history you do not know, and the fault that strands a crew at twenty feet is almost never the one that appeared this morning.

Write down the rated capacity on the plate and the number of people plus tools you actually put on the platform. Capacity on these machines is small and it is often reduced the moment the extension deck comes out — the plate, not your memory of the last machine, is the authority.

Note the ground you drove on. Slab edges, floor boxes, cable ramps, soft fill and a gradient you could not feel underfoot are the things that turn a stable machine into a tipping one, and writing them down is how a venue you return to stops surprising you.

A note on the words

The standards and the crew use different words for the same machine. ANSI/SAIA A92.20 and its companions call the whole family Mobile Elevating Work Platforms, and a scissor lift is a Group A Type 3 — it lifts vertically only, and it travels while elevated. Nobody on a load-in says any of that. They say scissor, lift, or the brand: a Genie, a Skyjack, a JLG.

"Aerial lift", "AWP" and "cherry picker" get used loosely and often mean a boom, which is a different machine with different rules — a harness is required in a boom basket and generally is not in a scissor platform. When somebody tells you a lift is booked, ask which kind before you plan the work.

A note on safety

A scissor lift fails in two directions. It tips over, usually because it was driven elevated across ground that was not flat, or because the load on the platform was over the rated weight or hanging outside the rails. And it crushes — the operator's head against a beam or a sprinkler pipe overhead, because the machine goes up faster than a person looks up.

The guardrail is the primary fall protection on a scissor lift, and it only works if the gate is shut and your feet are on the platform floor. Climbing the rails to reach the last foot of height is the single most common way a competent operator becomes a statistic.

This book prepares you for training and evaluation. It is not that training: a scissor lift qualification requires somebody watching you operate a real machine.

Where this book sits

This book assumes you have read Safety Awareness & Rigging Basics, or that you already know what is in it.

Experience counts instead. If you have time on load-ins where you have worked around lifts, held the floor for somebody else, and watched the machine being driven badly, start here.

If none of that is true yet, read Safety Awareness & Rigging Basics first.

What pairs with this

• Personal Fall Arrest Systems (PFAS) — Certification Prep — the harness question this book raises and that book answers

Where it leads

These are not steps in an order. Take whichever one fits.

• Boom Lift / AWP Operator — Certification Prep — the other machine on the same load-in, with different rules
• Staging & Crew Chief — running the floor the machine works on

Scissor Lifts

Start with what the machine is, because its class decides which rules apply to it and what it may and may not do.

Platforms that rise straight up to height.

Working at height with scissor lifts

A scissor lift is a mobile elevating work platform -- a MEWP -- and specifically a Group A, Type 3 machine. Those two labels carry real meaning. Group A means the platform stays inside the machine's tipping line: it goes straight up and comes straight down, and never swings out over the wheels the way a boom does. Type 3 means it can be driven from the platform while elevated.

That combination is what makes it the default machine for AV. You can put two people and a case of fixtures on a stable deck, drive along a row of lighting positions without coming down, and work with both hands and a rail around you.

It also explains the two big hazards. Because it travels elevated, it can be driven into things and over things while tall and top-heavy. And because the platform is boxed in by rails at chest height, anything solid overhead meets the person rather than the machine.

The hazards of scissor lifts

Five patterns account for nearly everything. Tip-over, usually from driving elevated over a slope, a hole, a ramp or a cable. Crushing, where a person is trapped between the platform rail and something overhead. Falls from the platform, almost always because somebody climbed on the rails or opened the gate. Struck-by, where the machine runs over or into somebody on the ground. And entrapment, where the machine stops working with a person up in the air.

None of these is subtle. Every one is prevented by a specific habit taught in this book.

Where AV uses them

• Focusing and troubleshooting lighting fixtures on truss and house positions.
• Hanging and cabling projectors, speakers and displays.
• Rigging soft goods, drapes, banners and signage.
• Reaching camera positions, catwalks and control cabling.
• Anything above head height in a ballroom, arena, theatre or exhibition hall.

In practice a lift is on almost every load-in of any size, and it is usually being used under time pressure by people whose main trade is something else. That is the context the rest of this book is written for.

The parts of the machine

Learn the names, because every instruction, fault and manual uses them.

• Chassis: the base, the wheels and the drive.
• Scissor stack: the folding steel arms that raise the platform.
• Platform: the deck you stand on, with its guardrails, gate and toe boards.
• Extension deck: the slide-out section at one end, with its own lower rated capacity.
• Platform controls: the box you drive and lift from, with an enable trigger.
• Ground controls: the station at the base that overrides the platform and is used for rescue.
• Emergency lowering: a manual valve or lever that brings the platform down with no power.
• Pothole protection: bars that drop when the platform rises, so the machine cannot drive into a dip while elevated.

What the machine class means

The labels on the machine decide which rules apply.

The five hazards

Each has a specific prevention, taught later in this book.

How to do it

1. Find the ID plate and read the capacity and the wind rating.
2. Identify the platform controls, the ground controls and the emergency lowering.
3. Find the extension deck and its separate rated capacity.
4. Ask who on site is trained and authorised to operate this machine.
5. Do not operate it until you have been familiarised on this model.

What goes wrong

Practice it

At the next venue with a lift on site.

The Machine and Its Plate

Every scissor lift carries its own limits printed on it. The plate is not decoration; it is the only place that tells you what this particular machine may carry, where it may be used, and in what wind.

The ID plate

The identification plate is a metal or laminated plate on the machine, usually on the chassis near the ground controls and often repeated in the platform. It carries the make, model and serial number, the rated capacity, the maximum number of occupants, the wind rating, the maximum platform height, and the slope the machine may be driven on.

If the plate is missing or unreadable, the machine does not get used. There is no way to operate within limits you cannot read.

Rated capacity, and the extension deck

Rated capacity is everybody and everything on the platform: people in work boots, tool belts, a case of fixtures, a coil of cable, a drill and the bag it came in. A small indoor lift might be rated for two people and a few hundred kilograms total, and two AV technicians with a fixture and a toolbox can be closer to that number than they think.

The slide-out extension deck almost always has a much lower rating than the main platform, and it is printed separately. Standing two people out on an extension rated for one is one of the ways a machine ends up outside its stability envelope while looking perfectly normal.

Wind rating and where the machine may be used

The plate says whether the machine may be used outdoors at all. Many slab scissor lifts -- the electric ones used indoors on smooth floors -- are rated for no wind whatsoever, which means indoor use only. Rough-terrain machines carry a wind rating, and 28 miles an hour is the maximum for a wind-rated MEWP.

That number is lower than most people expect, and wind at platform height is stronger than wind at ground level. A festival site in a stiff breeze is exactly where this gets ignored, and exactly where the machine is least forgiving: raised platform, light chassis, a gust, and the whole thing goes over.

Anything on the platform that catches wind -- a banner, a sheet of ply, a drape -- effectively raises the wind load, which is why the standard treats carrying panels at height as its own hazard.

Load sensing and what it does

Machines built to the current design standard include load sensing. The machine weighs what is on the platform, and if it is over capacity it refuses to lift, refuses to drive, or both, usually with an alarm and a message at the controls.

Treat that refusal as information rather than a fault. A lift that will not raise has usually just told you something true about what is on it. The answer is to take weight off, not to find an older machine that does not argue.

Controls, and how to get down without power

There are two control stations. The platform controls are the box you drive and lift from, with an enable trigger or footswitch that has to be held for anything to move -- a deliberate design, so that a slumped or trapped operator stops the machine. The ground controls at the base can override the platform and lower it, and they are a normal part of getting somebody down.

The emergency lowering is a manual valve, cable or lever that lowers the platform with no power at all. Its location differs by machine, which is precisely why familiarisation on this specific machine matters. Everybody on the crew should be shown it before anybody goes up, because the person who needs it will be on the ground.

What the plate tells you

If you cannot read it, the machine does not get used.

The three ways down

Know all three before the platform is raised.

How to do it

1. Find the ID plate and read the capacity, occupants and wind rating.
2. Read the separate rating for the extension deck.
3. Add up the weight actually going on the platform, including tools and materials.
4. Confirm the machine is rated for where you are using it, indoors or out.
5. Locate the ground controls and the emergency lowering, and show the crew both.

What goes wrong

Practice it

With a real machine and a real crew.

Before It Goes Up

Three checks happen before a platform rises: the machine, its functions, and the place it is standing. Skipping the third is the one that catches AV crews, because the venue changes hour by hour during a build.

The pre-use inspection

A walk-around at the start of every shift, before the first lift. Look at tyres and wheels, hydraulic hoses and cylinders for leaks and damage, the scissor stack pins and welds, the platform floor, rails, gate and toe boards, the extension deck and its lock, the battery and charger leads, the decals and the ID plate, and any obvious impact damage.

Anything wrong takes the machine out of service, tagged, with the key removed and the fault reported. A machine that is "mostly fine" is not fine: these are machines that hold a person in the air.

The function test

The walk-around checks the machine; the function test checks that it works. From the ground controls, raise and lower the platform a short distance. Then from the platform, with the gate closed and the enable held, test drive, steer, raise and lower. Check the emergency stop at both stations. Check the horn, the tilt alarm and the motion alarm. Confirm the pothole protection drops when the platform rises, and that the drive speed cuts out when elevated.

Any safety device that does not work ends the test and the machine's day. They are not conveniences. The tilt alarm is what tells you that the ground you are standing on is not what you thought it was.

The workplace inspection

Look at the place the machine will actually work: the floor and what it can carry, slopes, ramps, drop-offs, pits, floor pockets and open traps, cable runs and ramps, debris, wet or slippery patches, and the route from where the machine is to where it needs to be.

Then look up, and keep looking up. Beams, ducts, sprinkler pipe, cable tray, house rig, truss, soft goods, and anything being flown at the same time. The overhead is what turns a routine lift into a crushing injury, and on a load-in the overhead is changing while you work.

Finally look at the people: who else is working in this area, who is above, who is below, and who else is driving a machine through the same doorway.

The exclusion zone

A machine at work needs space around it that other people stay out of. Cones, tape or barrier, and on a busy load-in a person whose job is to watch the ground while the operator is looking up.

This is not bureaucracy on a show site; it is the specific control for the struck-by hazard, which is entirely about somebody walking into a space the machine is about to occupy while nobody is looking at the floor.

Three inspections, three questions

All three happen before the first lift of the shift.

Looking up, on a load-in

What is overhead changes hour by hour during a build.

How to do it

1. Walk around the machine and inspect it against the manufacturer's list.
2. Function test from the ground controls, then from the platform.
3. Confirm every safety device and alarm works.
4. Inspect the floor, the route, the overhead and the people.
5. Set an exclusion zone and agree who is watching the ground.
6. Confirm the rescue plan and that somebody on the ground can lower the machine.

What goes wrong

Practice it

On a real load-in.

Stability & Positioning

A scissor lift is stable until it is not, and the transition is fast. This chapter is about the ground under the wheels and the rule that prevents most tip-overs.

Position the lift so it stays stable.

Inspection and positioning

Position the machine so that the work is reachable without leaning, stretching or climbing. If the job needs the operator to reach out over the rail, the machine is in the wrong place, and the fix is to come down and move it rather than to extend the person.

Get the chassis on firm, level ground. Check for the things a venue hides: floor pockets and traps, cable runs and ramps, expansion joints, drainage channels, soft ground outdoors, and plywood over something that is not solid underneath.

Then check the route, not just the destination. The machine has to get there, and most of the hazards on a load-in are on the way.

Stability and limits

Stability comes from keeping the combined weight of machine, people and load inside the tipping line -- the footprint of the wheels. A scissor lift is good at this, which is why it is the machine of choice, but raising the platform raises the centre of gravity and shrinks the margin.

The plate gives a maximum slope, and it is small -- often a couple of degrees. Ramps, crowned car parks, loading docks and the gentle fall of an arena floor are all steeper than people assume. The tilt alarm exists because human judgement of slope is poor.

Most slab scissor lifts have neither outriggers nor levelling jacks; they are found on some rough-terrain machines. Where a machine has them, they must be deployed onto firm ground with pads. They are part of the stability of the machine, not an optional extra for difficult days.

Floor loading on a venue floor

A scissor lift is heavy, and its weight arrives through four small contact patches. Venue floors have limits: sprung theatre floors, stage decks, raised platforms, exhibition hall floors over basements and service voids, and the ballroom floor above a car park.

Ask the venue what the floor will take before driving a machine on to it, and use spreader boards or track where a venue asks for them. This is also a commercial risk: the machine that breaks a sprung floor costs more than the show earns.

Driving while elevated

A Type 3 machine may be driven while elevated, and that permission is the single most dangerous thing about it. Elevated, the machine is top-heavy, its drive speed is cut down, and every small obstacle -- a cable ramp, a threshold, a floor pocket, a dip in the asphalt -- becomes a tipping force rather than a bump.

The habit worth building is simple: lower the platform to travel anything other than a short, checked, level move within the working area. On a load-in, the temptation is always to save the thirty seconds and roll to the next fixture with somebody still up there. The tip-overs in the reports are that move.

When you do travel elevated, look where you are going, go slowly, keep the route clear, and have somebody on the ground watching the wheels rather than the work.

What takes a lift over

Nearly every tip-over is one of these.

Travel, elevated or lowered

The default answer is lowered.

How to do it

1. Walk the route and the work position before driving.
2. Check for slope, holes, pockets, ramps, soft ground and floor limits.
3. Confirm the floor will take the machine, asking the venue if unsure.
4. Position so the work is reachable with both feet on the deck.
5. Deploy outriggers or levelling jacks where the machine has them.
6. Lower the platform before moving anywhere that is not short, level and checked.

What goes wrong

Practice it

In the venue you work in most.

Guardrails, Fall Protection & Operation

On a scissor lift the fall protection is built in. It only works if it is complete, closed, and nobody stands on it.

Stay protected and operate within limits.

Guardrails and fall protection

The platform's guardrail system is the primary fall protection on a scissor lift: a top rail, a mid-rail, toe boards, and a gate or chain at the entrance. The current standard raised the top rail height to 43.5 inches from 39.5, which is a measurable change on newer machines and a reminder that the rail is engineered rather than decorative.

The system protects you only while it is complete. That means the gate closed and latched behind you, chains hooked, no rail section removed to pass something through, and nothing propped against the rails. It also means not using the guardrails to support materials, another platform or a person -- every one of which happens on load-ins.

Operating safely within limits

Both feet on the platform floor, every second. Do not climb on the rails, sit on them, stand on the mid-rail, or put a ladder, box, case or step in the platform to gain height. If you cannot reach, the machine is in the wrong place or is the wrong machine.

Keep your body inside the rails. Reaching out sideways moves your weight towards the tipping line and puts your hands where the machine cannot protect them. Keep the platform tidy: loose tools and cable on the deck are a trip hazard in a space the size of a door, and anything that goes over the toe board lands on somebody.

Watch the overhead continuously as you rise, and stop before the rail reaches anything. Watch the ground as you travel. And keep one hand free -- carrying a fixture with both hands while driving elevated is how people end up steering with their body.

Harnesses on scissor lifts

This is the question crews get wrong in both directions. On a scissor lift the guardrails are the primary protection and a harness is not automatically required, which is the opposite of a boom lift, where a harness and lanyard clipped to the basket anchor are the rule because the hazard is being catapulted out.

Whether you wear one on a scissor lift is decided by the manufacturer's instructions, your employer's policy, the site rules, and the risk assessment for the task. Many venues and production companies require it as a blanket policy, and plenty of scissor lifts have a designated anchor point in the platform for exactly that.

When a harness is worn, it is clipped to the machine's designated anchor point and never to the building, the truss or anything else outside the platform. Clipping to the structure means that if the machine moves, the structure holds you and the platform leaves.

What you never do on the platform

• Never climb on, sit on or stand on the guardrails.
• Never add a ladder, step, box or case to gain height.
• Never remove a rail section or leave the gate open.
• Never tie the gate open or defeat an interlock.
• Never exit the platform at height onto a structure unless the machine, the site and your training all specifically allow it.
• Never use the rails to support materials or another platform.
• Never carry a panel, drape or sheet at height in wind.
• Never move the machine with somebody on the platform who did not agree to it out loud.

Each of these is somebody's incident report. The last one in particular: a machine moved by a helpful colleague while a technician is leaning into a fixture is a fall waiting to happen.

Scissor lift against boom lift

The fall protection answer is genuinely different.

The guardrail system

It protects you only while it is complete.

How to do it

1. Enter the platform and close and latch the gate behind you.
2. Wear a harness clipped to the platform anchor if policy or assessment requires it.
3. Keep both feet on the deck and your body inside the rails.
4. Raise in stages, watching the overhead the whole way.
5. Keep the deck clear of loose tools and cable.
6. Come down and move the machine rather than reaching for the work.

What goes wrong

Practice it

With the machine on the ground.

Crushing, Power Loss and Rescue

Two things happen on scissor lifts that people do not expect: you can be crushed by the machine you are standing in, and you can be left in the air by a machine that simply stops. Both have specific, cheap answers.

Crushing against overhead structure

This is the scissor lift's own particular way of killing people. The platform rises, the operator is looking at the work rather than up, and their head, neck or chest meets a beam, a duct, a pipe or a truss while the machine keeps pushing.

What makes it lethal rather than merely painful is that the machine does not know. If the operator is pinned against the structure with their body holding the control lever or footswitch, the lift continues to raise. Several deaths have happened exactly that way.

The defences are all about attention and staging. Know what is above you before you rise. Raise in stages rather than one continuous push, and look up between stages. Stop the platform well below anything solid. Where the work is close to structure, have somebody on the ground watching the gap and able to lower the machine from the ground controls.

Power loss and entrapment while elevated

Batteries die, hydraulics fail, controls fault, and machines sit at the end of a long day with less charge than anybody checked. The result is a person on a platform that will not come down and a crew with no plan.

It is not by itself a fatal situation, which is exactly why it gets treated casually: everyone waits, somebody phones somebody, and the person stands up there for an hour. It becomes serious when it happens during an emergency, when the person is unwell, or when the crew starts improvising -- climbing the scissor stack, or stepping from the platform onto truss.

The answer is on the machine: the ground controls, and if there is no power at all, the emergency lowering. Both of them are used by somebody on the ground, which is why familiarisation is not just for the operator.

The risk assessment and the rescue plan

The safe-use standard asks for two documents before MEWP work starts, and the reason for each is visible in the two sections above.

A site risk assessment looks at the specific work: the machine selected, the ground, the overhead, the people around it, the weather if outdoors, and what else is happening in the same space at the same time. On a load-in that last item matters most, because the space is shared with riggers, carpenters and forklift drivers.

A rescue plan is site specific and names the method, the equipment, the people and the time. Lowering from the ground controls, using the emergency lowering, or a second machine brought alongside -- and if the plan relies on the fire service, somebody has confirmed the response time and the access.

Everybody who goes up has to know the plan, including occupants who are not operating. The person who cannot operate the machine still needs to know what is about to happen to them.

Occupants, not passengers

An occupant is anybody on the platform who is not operating it -- on an AV job, usually the person actually doing the work while somebody else drives. The standard expects them to be trained too: in the hazards, in the fall protection in use, in the rescue plan, and in what to do if the operator becomes unable to operate.

That last one is the point. An occupant who cannot lower the platform or call for the right help is a second casualty rather than a help.

The two situations, and what answers them

Both are prevented or resolved by things that cost nothing.

What the rescue plan names

Written before the platform rises, not after.

How to do it

1. Identify everything above the work position before you rise.
2. Agree who on the ground is watching the gap.
3. Raise in stages, looking up at each stage.
4. Stop well below the nearest structure.
5. Keep looking up while working, especially when repositioning.
6. Lower in stages with the same attention.

What goes wrong

Practice it

For a real lift task on a real site.

Lifts on a Load-In

Everything so far is true on any site. This chapter is what changes when the site is a show, the clock is running and four departments are in the same room.

The clock, and what it does to judgement

Lift work in AV happens under a specific pressure: focus notes on a clipboard, doors in ninety minutes, and one lift shared between lighting, video and audio. Every unsafe habit in this book gets its excuse from that pressure -- travelling elevated to save a move, reaching rather than repositioning, skipping the function test because the machine was fine yesterday.

The useful response is not to work slower but to remove the reason to rush: book the lift for long enough, get the focus list in order so the route is efficient, and agree who owns the machine for the call so it is not being fought over.

The floor is not the floor you inspected

A load-in floor changes hourly. Cable that was not there at nine is there at eleven, ramps arrive, cases are staged in the route, and the pit rail comes off. An inspection done once at the start of the day is out of date by the time the lift is needed.

Build the habit of re-checking the route each time the machine moves to a new area, and of driving with somebody watching the wheels on a busy floor. It costs a minute.

Working near truss and flown loads

AV lift work happens directly under the thing that is also being rigged. Truss moves, motors run, and a platform parked under a flying load is the worst place in the room.

Coordinate with the rigging crew before the lift goes anywhere near the air they are working in. Nobody works under a moving load, and a lift under a load is still under a load. When motors run, platforms come down or move out.

When focusing close to truss, the crushing hazard from the previous chapter is at its highest, because the structure is at exactly the height you are working at and it is not always where it was an hour ago.

People below, and the shared room

An exclusion zone on a show floor lasts until the next department needs to cross it, which is about four minutes. Maintain it anyway, tell the neighbouring crews what you are doing, and use a ground person on a busy floor rather than relying on cones.

Anything on the platform can land on those people: a wrench, a shackle, a gel frame, a drink. Tether tools, keep the deck clear, and never rest anything on the top rail.

Charging, stowage and the end of the night

Most AV scissor lifts are electric, and the night ends badly when the machine runs flat halfway through strike. Put it on charge whenever it is parked, check the state of charge before a long call, and do not start a lift you cannot finish.

At the end, lower the platform fully, retract the extension, centre the wheels, switch off, remove the key if that is the house rule, and park it where it does not block an exit or a fire route. A machine left elevated overnight is both a hazard and a signal that the last person was in a hurry.

What a show adds to the standard hazards

The machine is the same; the room is not.

How to do it

1. Agree who owns the machine for the call and who is trained to operate it.
2. Function test at the start of the call.
3. Re-walk the route each time the machine moves to a new area.
4. Coordinate with rigging before working under or near the air they are in.
5. Keep a ground person on a busy floor.
6. Charge it whenever it is parked, and stow it lowered at the end.

What goes wrong

Practice it

On your next lift call.

Regulations & Certification

Which document says what, and what it actually takes to become an operator rather than somebody who has read about it.

The rules — and why training is required.

Regulations and the certification requirement

The standards that govern these machines are the ANSI/SAIA A92 suite: A92.20 covers design and manufacture, A92.22 covers safe use, and A92.24 covers training. Together they replaced the older single standard, and they are why newer machines have load sensing and taller rails, and why the paperwork asks for risk assessments and rescue plans.

The legal duty in the United States comes from the regulator rather than from the standards themselves: scissor lifts are treated as mobile scaffolds, which is where the guardrail and training obligations come from, while boom-type machines fall under the aerial lift rule. Elsewhere the structure differs and the substance does not.

Above all of it sits the manufacturer's manual for the specific machine, which is binding on the user and which is the only document that knows where the emergency lowering is on that model.

This book is awareness and preparation only

This book is not an operator qualification and cannot be. The framework requires general training, a knowledge evaluation, familiarisation on the specific machine, and a practical evaluation by a qualified person who watches you operate it.

Read this book to arrive at that training already fluent in the machine, the plate, the checks and the failures, and to recognise on site when something is wrong. Then get trained, evaluated and authorised, and keep the record.

Who has to be trained

The safe-use standard names three roles, and most crews only think about the first.

• Operator: trained, evaluated and authorised to operate the machine.
• Occupant: anybody else on the platform, trained in the hazards, the fall protection in use, the rescue plan, and what to do if the operator cannot operate.
• Supervisor: the person who selects the machine and plans the work, trained to understand the rules, the machine's limits and the hazards.

On an AV job all three often exist in the same small crew, and frequently the supervisor is the person who booked the lift over the phone without seeing the room.

Familiarisation, and why a card is not enough

Training makes you an operator. Familiarisation makes you an operator of this machine: where its controls are, how its emergency lowering works, what its plate says, what its alarms sound like and what the manufacturer's manual requires.

Controls genuinely differ between manufacturers and models, and the one that matters most in an emergency -- the lowering valve -- is in a different place on almost every machine. A card in your wallet from a course two years ago does not tell you that.

Where the rules live

The manufacturer's manual binds on top of all of them.

The four parts of becoming an operator

A book can only help with the first.

How to do it

1. Ask your employer what MEWP training they provide and for which machine groups.
2. Take training that covers Group A machines and includes a practical evaluation.
3. Ask for familiarisation on each new machine you are handed.
4. Keep your own copy of the record and its expiry date.
5. Book the refresher before it lapses.

What goes wrong

Practice it

On your own situation.

Scissor Lift Awareness & The Path

What to keep from all of this, and how to get from here to being trained, evaluated and authorised to take the machine up.

Understand scissor lifts and get properly certified.

Scissor-lift operation understood

Carry a few sentences away. A scissor lift is a Group A, Type 3 MEWP: it goes straight up, and it may be driven elevated, which is exactly when it tips. The plate tells you the capacity, the occupants, the wind rating and the slope, and the extension deck has its own lower rating.

Three inspections happen before the first lift: the machine, its functions, and the place. Guardrails are the primary fall protection and only work complete and closed. Look up as you rise, in stages, because crushing is this machine's way of killing people. Lower it to travel. And a rescue plan exists before the platform does.

Underneath all of it: the machine is easy, which is the problem. Every serious incident starts with somebody treating it as easy.

Getting certified to operate scissor lifts

Find training that covers Group A MEWPs and includes a practical evaluation -- through your employer, a rental company that runs proper programmes, or an accredited training provider. Expect theory, a written evaluation, time on the machine and an assessor watching you operate.

Ask for familiarisation whenever you are handed a machine you have not used. It takes ten minutes and it is the difference between knowing and guessing where the lowering valve is.

Keep the record, diarise the expiry, and take the refresher before it lapses rather than after.

Practical sign-off

This book builds scissor-lift AWARENESS and prepares you to understand it. It does NOT certify you to operate one — that requires training with a practical evaluation by a qualified person, familiarisation on the specific machine and your employer's authorisation, as well as the platform's protections and following the regulations and manufacturer instructions.

• Understood scissor lifts and their hazards
• Understood safe positioning, stability, and platform protection at an awareness level
• Understood safe operation within limits at an awareness level
• Understands that operating a scissor lift requires being trained, evaluated and authorised by your employer

What to do on Monday

• Find the ID plate on the lift you use most and read all five numbers.
• Find the ground controls and the emergency lowering, and show one colleague.
• Ask whether your company has a written rescue plan for lift work.
• Ask who the trained supervisor for lift work is.
• Count, on your next call, how often the machine travels elevated.

None of these takes more than a few minutes, and each one is a question that, asked early, prevents the kind of incident the rest of this book describes.

Awareness against qualification

The difference matters legally and practically.

How to do it

1. Ask your employer which MEWP training they provide and when.
2. Confirm it covers Group A machines and includes a practical evaluation.
3. Attend, and treat the machine time as the real content.
4. Ask for familiarisation on each machine you are handed afterwards.
5. Keep the record and diarise its expiry.

What goes wrong

Practice it

This week.

Glossary

What the gear actually looks like

Every device named in this book, in one place. Recognition is the whole point of Chapter 4 — use this page to attach a picture to each name before you meet it on a dock at six in the morning.

Audio

Dynamic microphone

Condenser microphone

Wireless handheld

Radio rack

Mixing console

Stage box / snake

Power amplifier

Main loudspeaker

Subwoofer

Stage monitor wedge

In-ear monitors

DI box

Video

Camera

Video switcher

Scaler / processor

Projector

LED wall panel

Confidence monitor

Lighting & control

Conventional fixture

Moving-head fixture

Lighting console

Dimmer

Show controller

Media server

Networking & infrastructure

Network switch

Patch bay

Equipment rack

Power distribution

Cable tester

A properly coiled cable

Connectors, close up

XLR

TRS / TS ¼-inch

SDI on BNC

HDMI

Cat5e / Cat6 (RJ45)

Fiber optic

DMX (5-pin XLR)

AC power — not signal